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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Impact of nutrient sources on soil carbon pools, soil properties and yield of wheat-urdbean under poplar based agroforestry system
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-06) Ghosh, Sukanya; Paul, Jai
    Field experiment was conducted during rabi and kharif seasons of 2017-19 at Experimental site of Agroforestry Research Centre (old site) near Horticulture Research Centre, Patharchatta of G.B. Pant University of Agriculture and Technology, Pantnagar. The experiment was laid in Randomized Complete Block Design comprising of nine nutrient treatments (chemical fertilizers and its substitution with organics) to study their effects on soil properties under an established poplar agroforestry system with wheat- urd bean cropping sequence. Observed results showed that treatment where application of 50% of recommended dose of N-fertilizers was substituted by FYM+VC gave highest grain yield of wheat (41.6 quintal ha-1) and urdbean (6.86 quintal ha-1) which was significantly higher than all other fertilizer treatments. Due to continuous cropping no perceptible change in pH was observed. Availability of nutrients was found lower in deeper soil layers (15-60 cm) than in surface layer (0-15 cm). The bulk density displayed a growing pattern in respective treatments, with a rise in soil depth (0–30 cm). With integrated nutrient management program, soil physical properties were enhanced. The status of Walkley black carbon showed a growing trend over the years. In control, it was 5.13 g C kg-1, whereas combined use of NPK fertilizers and FYM+VC in 50:50 ratio increased it by 23.5 and 33.2% over T1. With 100 per cent (NPK+FYM+VC) application, the highest concentrations of various carbon pools were found, whereas the control plot displayed the lowest amounts. Regardless of depths, the optimal application of NPK:FYM+VC in 50:50 on N basis demonstrated a higher concentration of organic carbon pools in the soil relative to both controls taken in the study. All the treatments showed higher accumulation of soil organic carbon fractions in surface soil as compared to sub-surface soil. Growing crops without fertilization reduced the percentages of organic carbon fractions. Active and passive soil organic carbon fractions were at peak with joint application of NPK and FYM at all depths of the soil. Active pool (Cfrac1 and Cfrac2) of soil organic carbon contributed more to total carbon in comparison to contribution of passive pool (Cfrac3 and Cfrac4). The results revealed that incorporation of FYM @ 6 t ha-1 with VC @ 2 t ha-1 and NPK has observed significantly higher soil microbial biomass carbon, TOC stock, C-sequestration and C-sequestration rate than any other management practices. Carbon management index values for different nutrient application schemes were observed and found to be good with INM practices. Carbon budget was significantly positive by use on integrated nutrient application in the two year period rather than only chemical or no fertilization. Maximum increase of 54.6% and 73.5% in dehydrogenase and beta-glucosidase, respectively was recorded in the treatment where 50% of RDF was substituted through FYM+VC after wheat harvest. Also its residual effect on enzymes after urdbean harvest was maximum and increased over open control by 62.3% and 86.1%. Therefore, from this experiment it is concluded that application of NPK in conjunction with FYM and VC could be a sustainable management practice to sustain soil fertility, sequester more carbon and maintain/improve soil health vis-a-vis enhanced production of wheat- urdbean cropping sequence under poplar stands in Mollisols.
  • ThesisItemOpen Access
    Impact of long term integrated nutrient management in soybean-wheat cropping system on mollisol of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-05) Awasthi, Shalini Dwivedi; Srivastava, Ajaya
    A study on the impact of Long Term integrated nutrient management in soybean- wheat cropping system on Mollisol of Uttarakhand was done. For that a field experiment was conducted at Norman E Borlauge Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during 2014-17.Combined application of chemical fertilizers along with farm yard manure NPK 100% RDF + 5 ton FYM increased soil pH, EC in soil of soybean and wheat crop during three years while significant increased was observed for organic carbon content, available nitrogen, phosphorus, and potassium in soil of soybean and wheat crop during all three years. Among STCR Targeted yield inorganic and organic mode, STCR Targeted yield 2 organic mode + 5 ton FYM ha-1 significantly increased organic carbon content, available nitrogen, phosphorus, potassium in soil of soybean and wheat crop during three years. Combined application of chemical fertilizers along with organic manure farm yard manure NPK 100% RDF + 5 ton FYM ha-1 significantly increased plant height, number of nodules, number of pods, number of effective tillers, number of ears per plant , grain weight in soybean and wheat crop during all three years. Among STCR Targeted yield inorganic and organic mode, STCR Targeted yield 2 organic mode + 5 ton FYM ha-1 also significantly increased plant height, number of nodules, number of pods, number of effective tillers, number of ears per plant , grain weight in soybean and wheat crop during three years. The highest grain yield, straw yield and biological yield in soybean and wheat crop was obtained by the combined application of chemical fertilizers along with organic manure farm yard manure during three years. The maximum grain yield varied from 29, 30.40, 32.53 q ha-1 in soybean crop and 53.33, 54.53 56.57 q ha-1 in wheat crop was obtained by NPK 100% RDF + 5 ton FYM ha-1 during three years 2014- 17.The highest straw yield varied from 36.54, 38.30, 40.99 q ha-1 in soybean crop and 74.67, 76.35, 79.19 q ha-1 in wheat crop was obtained by NPK 100% RDF + 5 ton FYM ha-1 during three years 2014-17. Among STCR Targeted yield inorganic and organic mode, STCR Targeted yield 2 organic mode + 5 ton FYM ha-1 significantly increased grain and straw yield in soybean and wheat crop during three years 2014-17. Combined application of chemical fertilizers and organic manure NPK 100% RDF + 5 ton FYM ha-1 significantly increased NPK content and uptake by soybean and wheat crop during three years. Among STCR Targeted yield inorganic and organic mode, STCR Targeted yield 2 organic mode + 5 ton FYM ha-1 significantly increased NPK content and uptake by soybean and wheat crop during three years. As a result of improved physical, chemical properties of soil and also improved growth parameters, productivity of soybean and wheat crops in soybean- wheat cropping system due to combined application of chemical fertilizers along with organic manure FYM during three years. From the present investigation it can be elucidated that the combined use of chemical fertilizer along with FYM for three years of soybean -wheat cropping system is a sustainable nutrient management practices because of improved physico- chemical properties of soil and productivity of both crops and also helps to obtained the targeted yield in soybean and wheat crops in soybean – wheat cropping system during three years.
  • ThesisItemOpen Access
    Soil test crop response based fertilizer requirement in combination with fym and biofertilizers for wheat
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Phutela, Sanjam; Gautam, Poonam
    Field experiments were conducted as per technical programme of AICRP on STCR in B2 block of Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar, (290 N latitude, 79 0 28’ E longitude and 243.84 meters above MSL), in rabi season 2018-19 to work out soil test crop response based fertilizer requirement in combination with FYM and biofertilizers for targeted yield of wheat. Prior to test crop experiment, a soil fertility gradient experiment was conducted during kharif 2018 by dividing the experimental field into three equal strips and applying graded doses of fertilizer nutrients and exhaust crop rice was grown to create soil fertility gradient artificially. Test crop wheat was grown during rabi2018-19, after dividing each strip in 24 plots (21 treatments + 3 controls). Wheat crop response to selected combinations of three levels of organics (0, 5 t FYM ha-1 and 5 t FYM ha-1+Bf ), four levels of nitrogen (0, 75, 150 and 225 kg N ha-1), four levels of phosphorus (0, 30, 60 and 90 kg P2O5 ha-1) and four levels of potassium (0, 20, 40 and 60 kg K2O ha-1) in strips of varied fertility was studied. The value of soil organic carbon, alkaline KMnO4-N, Olsen’s-P and NH4OAc-K ranged between 0.559 to 0.824 percent, 112.90 to 238.34 kg ha-1, 10.60 to 27.79 kg ha-1 and 90.16 to 164.64 kg ha-1, respectively before the test crop experiment on wheat. Grain yield of wheat varied from 10.23 to 57.95 q ha-1. Total uptake of N, P and K by wheat ranged from 18.45 to 160.68 kg N ha-1, 2.21 to 18.05 kg P ha-1and 16.24 to 121.97 kg K ha-1. Nutrient requirement to produce one quintal grain yield of wheat was 2.42 kg N, 0.278 kg P and 1.89 kg K. Per cent contribution of N, P and K from soil was 17.62, 18.21 and 19.14, respectively. Per cent contribution of N, P and K from FYM was 20.11, 13.62 and 32.31, respectively. Whereas from FYM + Bf it was 25.31, 15.48, and 39.20, respectively. Per cent contribution of N, P and K from fertilizer was 48.73, 34.73, 212.50, respectively. Per cent contribution from combined use of fertilizer and FYM was 49.12, 37.10 and 218.59 for N, P and K, respectively. Per cent contribution of N, P and K from applied fertilizer with FYM +Bf was 62.32, 38.88 and 266.68, respectively. Fertilizer nutrient prescription equations for targeted yield of wheat were developed without FYM, with FYM and with FYM +Bf and it was found that for a particular yield target fertilizer nutrient requirement decreased with increasing soil test values, however for a particular soil test value nutrient requirement increased with increasing yield targets. Application of FYM or FYM+ biofertilizer reduced the fertilizer nutrient requirement for the crop. The findings of present study may be used for fertilizer nutrient prescription for wheat in similar type of soils and climate after its verification at farmer’s fields.
  • ThesisItemOpen Access
    Influence of different agroforestry tree species on soil properties and their potential for carbon sequestration in tarai region of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-11) Melkani, Suraj; Singh, Veer
    A field study was carried out during 2019-2020 at Agroforestry Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, to study the influence of different agroforestry tree species on soil properties and their potential for carbon sequestration in tarai region. The experiment comprised of nine agroforestry tree species viz., Anthocephalus cadamb, Pterospermum acerifolium, Delonix regia, Terminalia chebula, Chukrasia tabularis, Dillenia indica, Bambusa vulgaris, Lagerstroemia indica and Pithecellobium dulce along with a control in randomize block design with three replications. Soil samples were collected prior to the commencement of the monsoon season at 0-15 and 15-30 cm depth. All soil properties were significantly affected by the tree plantations and except bulk density, pH and electrical conductivity of soil all other parameters decreased at 15-30 cm depth of soil compared to 0-15 cm. There was slight decrease in the pH of soil under tree covers, whereas no appreciable change in EC was observed. Compared with control (fallow land), all the soil properties found to be improved under different tree covers at both the depths. Among the different agroforestry tree species, Bambusa vulgaris planted soil showed the higher values of most of the soil properties however lowest values were found under other tree species. Different agroforestry tree species stored 47.18-101.77, 2.39-6.43 and 19.10-35.21 kg ha-1 more available N, P and K, respectively, over the fallow land at soil surface layer where maximum accumulation was found with Bambusa vulgaris for available N and Anthocephalus cadamba for available P and K. Very labile carbon fraction was observed about four and two times higher than less labile and labile and non labile carbon fraction, respectively, where highest amount of non labile carbon fraction was obtained under Dillenia indica plantation soil while other carbon fractions under Bambusa vulgaris plantation at both soil depths. Soil microbial biomass carbon, soil organic carbon content, SOC stock, carbon sequestration rate were higher under Bambusa vulgaris which was 45.08-149.21 μg g-1 of soil, 0.52-3.08 g kg-1 soil, 0.66-3.55 Mg C ha-1 and 0.098-0.586 Mg C ha-1 yr-1, respectively, more than other treatments. Compared to the initial level of 16 years back, available N, P and K, soil organic carbon content and SOC stock in terms of per cent were found to increase and was in the order of available P > SOC content > available N > available K > SOC stock. All the correlations between the soil properties in general were observed as significant. Highest significant positive and negative correlations were observed between SOC and SOC stock (0.991**) and soil bulk density and available N (-0.955**), respectively. Therefore, it is evident from the present study that agroforestry is a suitable land-use system in improvement of soil carbon storage, carbon sequestration as well as for the overall improvement of soil health through improvement in soil properties. The adaptation of Bambusa vulgaris in the agroforestry plantation system in tarai region may be beneficial.
  • ThesisItemOpen Access
    Optimization of fertilizer doses through soil test crop response studies for indian mustard in a mollisol of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-10) Saini, Vibha; Singh, Sobaran
    A field experiment was conducted during the year 2019-20 at D7 plot of Norman E. Borlogue Crop Research Centre of The G.B. Pant University of Agriculture and Technology, Pantnagar (290 N latitude and 79029’ E longitude), as per the technical programme of All India Coordinated Research Project on Soil Test Crop Response Correlation. The experiment was conducted in two phases. In the first phase soil fertility gradient was developed by dividing experimental field into three strips and applying graded doses of fertilizers in them (Strip I (no fertilizer), Strip II ( recommended fertilizer doses) and Strip III ( double to that of recommended fertilizer doses) and growing of exhaust crop of Sorghum. In the second phase i.e. next season test crop Mustard (Brassica juncea L.) was grown by dividing each strip in 24 plots having 21 treatments and 3 controlled plots. Response var. Pant Rya-20 of selected combinations of three levels of FYM (0, 5 and 10 t ha-1), four levels of nitrogen (0, 90, 120 and 150 kg ha-1), four levels of phosphorus (0, 40, 60 and 80 kg P2O5 ha-1) and four levels of potassium (0, 20, 40 and 60 kg K2O ha-1) at different fertility levels of mustard were studied. The values of the Alkaline KMnO4 extractable N, Olsen’s P and neutral normal Ammonium Acetate extractable K in the experimental field ranged between 67.2 to 128.8 kg ha-1 , 33.75 to 101.95 kg ha- 1 and 108.86 to 292.88 kg ha-1, respectively. The total nitrogen, phosphorus and potassium content of grain in experimental field ranged from 2.56 to 3.08, 0.56 to 0.91, 0.44 to 0.90 percent, respectively. The total nitrogen, phosphorus and potassium content in stover ranged from 1.26 to 1.99, 0.04 to 0.37, 0.39 to 1.17 percent, respectively. The total N, P and K uptake of mustard ranged between 81.13 to 147.62, 11.41 to 72.36 and 29.15 to 76.61 kg ha-1, respectively. In the present investigation the total grain yield ranged from 8.67 to 17.78 q ha-1 and total stover yield from 30.78 to 70.66 q ha-1.The percent protein content and oil content of experimental field ranged from 18.3 to 30.09 and 18.98 to 42.09, respectively. The nutrient requirement for production of one quintal of grain yield of mustard was found to be 8.03 kg nitrogen, 1.29 kg phosphorus and 3.49 kg potassium. Percent contribution of nitrogen, phosphorus and potassium was 113.6, 26.8 and 22.9, respectively, from soil, whereas from other sources as FYM was 26.8, 36.4 and 7.4 percent, respectively. Percent contribution of nitrogen, phosphorus and potassium without FYM was 15.0, 24.7 and 55.7, respectively and with conjoint use of chemical fertilizer with FYM was 15.1, 28.2 and 60.8 percent, respectively. Fertilizer prescription equations developed with the help of basic data with FYM were FN = 52.96 T – 7.49 SN – 1.77ON, FP2O5 =10.54T – 2.18 SP – 2.95 OP, FK2O = 6.93T – 0.46 SK – 0.12 OK and without FYM were FN = 53.24 T –7.53 SN, FP2O5 = 12.00 T – 2.48 SP, FK2O = 7.58 T – 0.49 SK. Coefficient of quadratic multiple regression (R2) was found good fitted (0.579**) between total grain yield, soil test values, added fertilizers and interaction between soil and fertilizer. Maximum response to mustard obtained at 120 kg N, 40 kg P2O5 and 20 kg K2O ha-1. The grain yield of mustard was significantly correlated with applied N (0.477**), P (0.558**) and K (0.397**) and with the uptake of nitrogen (0.348**), phosphorus (0.307**) and potassium (0.493**). There is no consistent trend on protein and oil content by application of fertilizer. Findings from present study can successfully utilized for the larger parts of Tarai region of Uttarakhand as effective guide for efficient and balanced fertilizer recommendation to mustard.
  • ThesisItemOpen Access
    Studies on physico-chemical and biological properties, carbon pools and carbon stock under selected multipurpose tree species in Mollisol of Tarai region of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Pant, Chayan; Dwivedi, G.K.
    A field study was carried out during 2019-2020 at Medicinal & Aromatic Plants Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, to study the physico-chemical and biological properties of soils, carbon pools and carbon stock under selected multipurpose tree species in Mollisol of Tarai region of Uttarakhand. The experiment comprised of ten agroforestry tree species viz., Tejpatta(Cinnamomum tamala), Arjun(Terminalia arjuna), Bael(Aegle marmelo), Sindhuri(Bixa orellana), Bakain(Melia azedarach), Baheda(Teminalia belliricica), Kadamb(Neolamarckia cadamba), Rudraksh Elaeocarpus ganitrus), Pakad(Ficus virens), Harad(Terminalia chebula) along with a control in randomize block design(RBD) with three replications. Soil samples were collected in the month of September - October at 0-15 and 15-30 cm depth. All soil properties were significantly affected by the tree plantations bulk density was lower under agroforestry system as compared to control. There was slight decrease in the pH of soil under tree covers, whereas no appreciable change in EC was observed. Compared with control (no tree land), all the soil properties found to be improved under different tree covers at both the depths. Different agroforestry tree species stored, 169.25 to 196.13, 11.72 to 22.48 and 157.52 to 173.19 kg ha-1 higher available N, P and K, respectively, over the control at soil surface layer where maximum accumulation was found with Tejpatta for available N and Kadamb for available P and Baheda for K. Very labile carbon fraction was observed to be higher than labile and less labile and non labile carbon fraction, respectively. Under MTP based agroforesty soil microbial biomass carbon, soil organic carbon content, SOC stock, which were 286.59 to 255.06 μg g-1 of soil, 0.81 to 0.92%, 15.46 to 17.10 Mg C ha-1, respectively, higher than other treatments. Significant and positive correlation was observed between organic carbon and biological properties. All the correlations between the soil organic carbon and carbon fraction were significant and positive except non labile fraction which had significant and negative value of correlation coefficient. Therefore, it is evident from the present study that multipurpose tree species based agroforestry is a suitable system for improvement of soil in terms of carbon sequestration, microbial biomass and enzymes as well as availability of the nutrients for overall improvement of soil health thus this system is recommended for bioremediation of the waste and degraded lands in different agroclimatic regions.
  • ThesisItemOpen Access
    Performance of Rhizobium and PGPR inoculation in mungbean on productivity and soil properties in mungbean-wheat sequence
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-08) Neha; Ramesh Chandra
    A field experiment was conducted to study the performance of Rhizobium and PGPR inoculation in mungbean on productivity and soil properties in mungbean-wheat sequence during 2017-18 and 2018-19. Laboratory study was carried out in the Department of Soil Science and the field experiment at Norman E. Borlaug Crop Research Centre of G.B.P.U.A&T, Pantnagar. The five treatments in mungbean consisting of inoculation with Rhizobium and PGPR, alone and in combination, N as RDF and an uninoculated control were randomized in main plots and three N levels (50, 75 and 100% of RDF) in succeeding wheat in sub plots in three replications. The soil was Sandy loam of neutral pH and low in available N, high in available P and medium in available K. The test crop variety of mungbean was Pant mung-5 and wheat PBW-550. Inoculation of different biofertilizer treatments in mungbean and N as RDF increased the mean nodule number, nodule dry weight and plant dry weight of both the years significantly over the uninoculated control. These treatments also significantly increased the leaf chlorophyll content of mungbean ranging from 1.9 to 11.3% at 60 DAS over the uninoculated control during 2018-19. Different treatments in mungbean recorded significantly higher mean grain yield from 2.5 to 11.7% and numerically more straw yield from 3.7 to 12.1% over the uninoculated control. Inoculation also increased the N and P content and its uptake by grain and straw in comparison to the uninoculated control. Mineral N and available N, P, K in soil at harvesting due to different treatments was 3.5 to 25.8%, 3.5 to 18.8%, 9.4 to 57.2% and 2.9 to 18.7% significantly more over the uninoculated control. Different treatments in mungbean also significantly increased the organic C, microbial biomass C, activities of enzymes dehydrogenase, acid and alkaline phosphomonoesterases and respiration rate in soil. Irrespective of N levels, the different treatments in preceding mungbean significantly increased the mean plant dry weight and plant height of wheat of both the years over the uninoculated control at different intervals. The effect of different treatments in preceding mungbean showed the numerical increases in mean grain of 3.1 to 9.7% and straw yield of 2.2 to 9.4% of succeeding wheat over the uninoculated control. Different inoculation treatments also influenced the various yield attributes of wheat viz. effective tillers, mean spike length, grain weight per spike significantly and total tillers, number of spikelets per spike and thousand grain weight numerically. These treatments also significantly increased N, P and K uptake by wheat grain and straw. The treatments in mungbean significantly affected the mineral, ammonical and nitrate N in soil at different intervals. All the inoculation treatments applied in mungbean also recorded higher organic C and available N, P and K in soil at different intervals. A significant variation in mean microbial biomass C and activities of dehydrogenase and acid and alkaline phosphomonoesterases in soil were also noticed at different intervals suggesting their residual impact on soil health. Increasing levels of N significantly increased the wheat grain and straw yields, mineral, ammonical and nitrate N, available N, P and K, microbial biomass C and activities of dehydrogenase and acid and alkaline phosphomonoesterases in soil at different intervals. The maximum net returns of Rs.1,46,071 ha-1 and B:C ratio of 2.74 were noted with combined inoculation of Rhizobium + PGPR. However, among the N levels, the highest net returns of Rs.1,48,603 ha-1 and the B:C ratio of 2.75 was obtained with 100% fertilizer N under mungbean-wheat sequence.
  • ThesisItemOpen Access
    Soil test crop response studies for efficient nutrient management on brinjal (Solanum melongena L.) grown in a mollisol of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-09) Bhatt, Pallavi; Singh, Sobaran
    Field experiments were conducted during the year 2017-18 and 2018-19 in a Aquic Hapludoll at D7 block of Norman E. Borlaug Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (290 N latitude and 79029’ E longitude), as per the technical programme of the All India Coordinated Research Project on Soil Test Crop Response Correlation. The experiments were conducted in three phases. In the first phase soil fertility gradient was created by dividing experimental field into three strips and applying graded doses of fertilizers (Strip I (no fertilizer), Strip II (100,100 and 100 kg N, P2O5 and K2O/ha) and Strip III (200, 200 and 200 kg N, P2O5 and K2O ha-1) and growing of exhaust crop fodder Oats (Pant 612). In the second phase i.e. next season test crop Brinjal (Solanum melongena L.) was grown in spring and kharif season by dividing each strip in 24 plots having 21 treatments and 3 controlled plots. Response of brinjal var Pant samrat was studied to selected combinations of three levels of FYM (0, 10 and 20 t/ha), four levels of nitrogen (0, 60, 120 and 180 kg ha-1), four levels of phosphorus (0, 30, 60 and 90 kg P2O5 ha-1) and four levels of potassium (0, 30, 60 and 90 kg K2O ha-1) at different fertility levels. In third phase, a verification trial was conducted during 2019 to validate the fertilizer adjustment equations generated by ten treatments and three replications, with combinations of inorganic, organic and growth regulator. The values of the organic carbon, Alkaline KMnO4 extractable N, Olsen’s P and neutral normal Ammonium Acetate extractable K in the experimental field ranged between 0.34 to 1.57 per cent, 100.35 to 200.70 kg ha-1 and 15.06 to 19.85 kg ha-1, 110.88 to 208.32 kg ha-1, respectively. The fruit yield of brinjal ranged from 70.83 to 300.82 q ha-1for spring brinjal and 110.25 to 302.01 q ha-1, for kharif brinjal. The total uptake of N, P and K ranged from 17.57 to 127.26, 2.02 to 37.77 and 9.55 to 63.00 kg ha-1, respectively by spring brinjal. However, for kharif brinjal the total uptake of N, P and K ranged from 15.06 to 159.76, 6.66 to 55.91 and 16.25 to 89.69 kg ha-1, respectively. Suitability of soil test methods was also evaluated by R2 value of multiple regression equation and concluded that Alkaline KMnO4-N, Olsen’s-P and NH4OAc-K methods are suitable for the determination of available nitrogen, phosphorus and potassium, respectively in Tarai region of Uttarakhand for brinjal crop. However, other methods were also found at par and may be recommended for use in soil testing laboratories. Basic data were generated with the help of soil test values, fertilizer doses, yield and nutrient values separately for both the seasons and then taking average for pooled basic data. The nutrient requirement for production of one quintal of brinjal was found to be 0.50 kg Nitrogen, 0.14 kg Phosphorus and 0.25 kg Potassium. Percent contribution of nitrogen, phosphorus and potassium was 31.63, 29.61 and 13.82, respectively from soil, whereas it was 59.58, 94.60 and 81.10 percent respectively from FYM. Percent contribution of nitrogen, phosphorus and potassium without FYM was 39.86, 35.52 and 44.98 and with conjoint use of chemical fertilizer with FYM 50.41, 47.43 and 65.12 percent, respectively. Fertilizer adjustment equations developed for conjoint use of fertilizers with the help of pooled basic data are: FN= 1.00T- 0.63 SN-0.59 ON, F P2O5= 0.68T- 1.43SP- 3.17OP, F K2O = 0.47T- 0.26SK- 0.75OK. Maximum response to spring brinjal was obtained at 120 kg N, 60 kg P2O5 and 60 kg K2O ha-1. While for kharif brinjal, maximum response was obtained at 180 kg N, 30 kg P2O5 and 90 kg K2O ha-1. The fruit yield of spring brinjal was significantly correlated with total uptake of nitrogen (0.636**), total uptake of phosphorus (0.696**) and total uptake of potassium (0.720**). However, for kharif brinjal fruit yield of brinjal significantly correlated total uptake of nitrogen (0.598**), total uptake of phosphorus (0.674**) and total uptake of potassium (0.659**). For the post harvest soil test values prediction equations were developed for available Nitrogen, Phosphorus and potassium. Verification trial was conducted to test the validity of fertilizer adjustment equations. Fertilizer application based on targeted yield approach was found to be significantly superior over general recommended dose (GRD). Findings from present investigation can be successfully utilized for Tarai region of Uttarakhand aseffective guide for efficient and balanced fertilizer recommendation for brinjal.
  • ThesisItemOpen Access
    Characterization of biochars and use of a biochar as source of macronutrients
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-09) Saxena, Abhishek; Srivastava, P.C.
    A pot experiment was conducted in the nethouse of Department of Soil Science, G.B.P.U.A.&T., Pantnagar to study the effect of graded levels of chemical fertilizers and biochar on dry matter yield, nutrient concentration and uptake by Oat (Avena sativa L.) and soil properties. Treatments imposed were combination of three fertilizer doses (0, 75 and 100% RDF) and five rates of biochar application rates (equivalent to 0, 0.5, 1.0, 2.5 and 5.0 t/ha)in a two factorial completely randomized design with three replications. The experiment was carried out by selecting Fodder Oat (variety UPO 212) crop which was harvested sixty days after sowing. The present study revealed that application of 100% RDF and 5 t/ha biochar gave the higher dry matter yield of the fodder Oat crop. The application of the fertilizer doses although increased the N concentration in plants but it was declined by increasing the biochar dose. Phosphorus concentration in the plant was however unaffected by the application of biochar. Both the biochar and fertilizer application significantly increased the K concentration in plants. Total uptake of N, P and K by plants were the highest under the treatment receiving 100% RDF + 5 t biochar/ha. The soil after the experiment showed lower pH and elevated EC on fertilizer and biochar application. The soil organic C also showed a significant rise only by the application of the biochar doses. Soil extractable N was found to increase significantly with fertilizer application and higher biochar doses only. The biochar application failed to influence soil extractable P content. Soil extractable Kincreased significantly with the application of high biochar dose. Thus, biochar can be considered as a good soil amendment to be used conjointlywith fertilizers which can supplement the crop yield and improve the soil quality.