Theses

Browse

Search Results

Now showing 1 - 9 of 47

Open Access
Impact of foliar nutrition on wheat quality and agronomic traits in tarai region of Uttarakhand
(G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Suraj Kumar; Kesarwani, Amit
A field experiment was conducted during Rabi season of 2021-22 at Norman E. Borlaug Crop Research Centre in Govind Ballabh Pant University of Agriculture & Technology, Pantnagar (Uttarakhand) to evaluate the effect of foliar nutrient application on wheat quality and yield in Tarai region of Uttarakhand. The soil of the experiment site was sandy loam in texture having medium organic carbon content (0.79%), low available nitrogen (166.8 kg/ha), medium available phosphorus (14.9 kg/ha) and low available potassium (167.3 kg/ha). The experiment consisted six foliar nutrition treatments viz. 2% elemental sulphur, 2% urea, 0.5% Zn EDTA, 1% KCl, a combination of S + N + Zn + K and without foliar spray treatment. The four wheat varieties used in the experiments were HD 3226, HI 1544, DBW 187 and PBW 1 Zn. The foliar application was done at stem elongation and milking stage. The experiment was laid in strip plot design with three replications. The sowing was done on 21st of November at 20 cm row spacing with recommended practices of wheat cultivation and seed rate of 100 kg/ha. The result indicated that 2% urea spray led to a significant increase in plant height, tiller count and dry matter accumulation, SPAD values and chlorophyll content compared to other treatments. Morever higher grain, straw and biological yield with good economic return was recorded with 0.5% EDTA compared to rest of the treatments which can be attributed to better crop response to zinc at milking stage. However, 2% urea achieved higher BC ratio compared to 0.5% EDTA due to low cost incurred in urea treatment. Among varieties, DBW 187 recorded significantly higher tiller count, dry matter accumulation, number of spikes/ m², grain yield, net return and BC ratio because of its higher yield potential and better response to foliar nutrition. PBW 1 Zn recorded higher SPAD values and chlorophyll due to more plant nitrogen content. Nitrogen and phosphorus content in grain and straw were higher in 2% urea treatment followed by 0.5% Zn EDTA treatment but K content and S content were significantly higher in 0.5% KCl and 2% elemental S treatment respectively. Zn content was significantly higher in 0.5% Zn EDTA treatment followed by 2% urea. Foliar application of nutrients particularly urea and zinc increased nutrient content in wheat crop. The amount of N, P, K and S content in grain and straw in varieties followed similar trend however, PBW 1 Zn being a zinc fortified variety reported highest Zn content in grain. Grain protein content was highest in 2% urea treatment and variety PBW 1 Zn as a result of higher grain nitrogen content. Sedimentation value and hectolitre weight was statistically similar for all treatments except no foliar spray. HD 3226 had higher sedimentation value and hectolitre weight indicating strong wheat flour with good gluten content, higher flour yield and starch content. It can thus be concluded that application of 2% urea and 0.5% Zn EDTA led to statistically greater growth, grain yield, grain quality, nutrient content, net return and benefit-cost ratio at stem elongation and milking stage compared to other treatments. DBW 187 recorded significantly higher grain yield, net return and BC ratio. Grain quality was higher in HD 3226 followed by PBW 1 Zn and DBW 187.
Open Access
Impact of organic and nano urea scheduling on multi cut oat (Avena sativa L.)
(G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-08) Saklani, Sonal; Mahendra Singh Pal
Field experiment was conducted during Rabi season - 2021-22 at Instructional Dairy Farm (IDF), Nagla, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) to study the “Impact of organic and nano urea scheduling on multi cut oat (Avena sativa L.). The soil of the experimental site was silty clay loam in texture with nearly neutral pH (6.70), rich in organic carbon (0.75%), low in available nitrogen (200.40 kg ha-1), medium in available phosphorus (19.40 kg ha-1) and available potassium (226.80 kg ha-1). The experiment consists of 12 treatments i.e., T1-125% RDN, T2-125% RDN (basal) +NU, T3-100% RDN, T4-100% RDN (basal) + NU, T5-75% RDN (basal) + NU, T6-50% RDN (basal) + NU, T7-100% RDN VC, T8-75% RDN VC + NU, T9-50% RDN VC + NU, T10-NU 25DAS + 1st and 2nd cut, T11- NU 20, 40 DAS + 1st and 2nd cut and T12-control, was laid out in Randomized Block Design (RBD) with three replications. The oat variety “Pant Oat-3” was sown on 15th November, 2021 and harvested on 30th March, 2022. The growth and yield attributes, green fodder yield, dry fodder yield, crude protein content, economics, N, P, K uptake and soil residual fertility were significantly influenced by different organic and nano urea scheduling. The highest green fodder yield was recorded under 125% RDN which was 6.9, 6.6 and 10.3% higher than 125% RDN (basal) +NU, 100% RDN and 100% RDN (basal) +NU respectively, however they were statistically at par with each other. Among the treatments using vermicompost alone or integrated with nano urea, 75% RDN VC+NU recorded 3.1 and 3.3% higher green fodder yield than 100% RDN VC and 50% RDN VC+NU, respectively. Treatments NU 25 DAS+ 1st & 2nd cut and NU 20 & 40DAS + 1st & 2nd cut produced nearly 17% higher green fodder yield than control. The NPK content, its uptake and protein content were also recorded significantly higher with application of 125% RDN that was non-significant with 125% RDN (basal) +NU, 100% RDN and 100% RDN (basal) +NU. The apparent nutrient balance was also found higher under above treatments than alone application of nano urea. Similarly, application of 125% RDN also gave significantly highest gross return, net return and B:C ratio but it was statistically at par with 100% RDN. The experimental results indicated that higher fodder yield, economics and apparent nutrient balance of multi cut fodder oat can be achieved with the application of 100% RDN i.e., 120:60: 40::N: P2O5:K2O kg ha-1. In addition, the combined application of vermicompost @4.5t ha-1 at basal followed by two sprays of nano urea @4ml l-1 at first and second cut can also be preferred for better yield and quality with least chemical residues as well as higher sustainability in Tarai region of western Himalayas.
Open Access
Potentials of super absorbent polymer and humic acid under different irrigation regimes to improve crop and water productivity in wheat (Triticum aestivum l.)
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Nidhi; Chaturvedi, Sumit
A field experiment was conducted at D-3 block of NEB Crop Research Center, G B Pant University of Agriculture and Technology, Pantnagar (263145), Uttrakhand during rabi season of 2021- 2022. Experiment envisages assessing the impact of moisture conservation practices in relation to variable irrigation schedules on wheat crop. The experiment comprised of 3 irrigation levels (IW:CPE ratio 1.0, 0.80 and 0.60) and 4 moisture conservation practices (control, Super absorbent polymer once, Super absorbent polymer twice and Super absorbent polymer + Humic acid twice). The experiment was laid out in split plot design with irrigation levels in main plot and moisture conservation practice in sub plots replicated thrice. The soil of the experimental site was sandy loam in texture, neutral in pH (7.2), high in organic carbon (0.74%), low in available nitrogen (195 kg/ha), rich in potassium (284 kg/ha) and phosphorus (22.7 kg/ha). The irrigation depth was 50 mm. During the crop season, 154.3 mm rainfall was received. Field capacity and Permanent wilting point moisture in 0-15 cm soil layer was 21.8% and 7.04% and in 15-30 cm 20.9% and 6.26%, respectively. A double dwarf wheat variety HD-2967 was sown during the first fortnight of November with seed rate of 100 kg/ha. Recommended dose NPK was 120, 60 and 40 kg/ha. Growth parameters viz., plant height, tillers count, dry matter accumulation, NDVI, SPAD values were increased with irrigation application and recorded maximum at IW:CPE 1.00. The grain yield and biological yield increased significantly at IW:CPE 1.0 and 0.80 over 0.60. Yield attributes namely spikes/m2, grain wt/ spike and 1000 grain weight were recorded maximum at IW:CPE 1.0 followed by 0.80. The net return and B:C ratio were maximum at IW:CPE 1.0 and significantly higher than IW:CPE 0.60. The NPK content of wheat and its uptake decreased as the irrigation interval was increased from IW:CPE 1.0 to 0.80 and 0.60. The net energy return was higher in IW:CPE 1.0 as compared to IW: CPE 0.80 and 0.60. Soil moisture content as recorded before irrigation ranged from 15.23% (IW:CPE 1.0) to 6.75% (IW:CPE 0.60). Imposition of moisture conservation practices brought significant improvement in growth, yield attributes and yield of wheat over control. Values of all these parameters were recorded maximum with Super absorbent polymer + Humic acid twice treatment followed by Super absorbent polymer twice. The net return increased with increasing the level of moisture conservation practices, while B:C ratio was unaffected. The NPK content and uptake by wheat were found maximum with Super absorbent polymer + Humic acid twice and the lowest under control. Soil moisture content prior to irrigation ranged from 8.32% (control) to 13.76% (Super absorbent polymer + Humic acid twice). Thus, irrigation to wheat at IW:CPE 1.0, and application of Super absorbent polymer + Humic acid twice as basal and at pre- flowering stage is the most viable moisture conservation practice to offset moisture stress in wheat.
Open Access
Assessment of different nutrient management practices to improve the yield potential of rice (Oryza sativa L.)
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Tamta, Rahul; Yadav, Santosh Kumar
A field experiment was conducted on a silty loam soil (Mollisol) at A-2 block (Rice Agronomy block), Norman E. Borlaug Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar during Kharif on 2021 to study the “Assessment of Different Nutrient Management to Improve the Yield Potential of Rice (Oryza sativa L.)”. The soil was slightly alkaline (pH 7.6) in nature, high in organic carbon (0.87%), low in available nitrogen (227 kg/ha), and medium in available phosphorus (19.6 kg/ha) and potassium (202 kg/ha). The design was laid in Randomized Block Design having 8 treatments with 3 replications. The treatments comprises of T1-135 kg N + 42 kg P + 46 kg K (SSNM), T2- T1 + FYM @ 10 t/ha, T3-125 % of T1, T4- 150% of T1, T5- T1 + Sampoorna (KAU) @ 10g/l (250l/ha) micronutrient spray (55-60 DAT), T6- T1 + Eco- Agra spray 3 times @ 1 litre in 300 litre of water (25,40 and 55 DAT), T7- Farmers application (180 kg N + 60 kg P + 40 kg K) and T8-150 kg N + 60 kg P + P + 40 kg K + FYM @ 5t/ha). Rice variety Pant dhan-24 (PD-24) was used for the experiment. The results of study indicated that the treatment T2 (combination of SSNM and 10 t/ha FYM) was superior over the other nutrient management practices in terms of grain yield, yield attributing characteristics of rice, cost of cultivation and profitability. The net return, gross return and B: C ratio were also obtained higher under T2 due to higher yield and lower expenses on chemical fertilizer. Addition of 10 t/ha FYM with SSNM (site specific nutrient management) increases plant height, number of tillers per m2, dry matter accumulation, effective panicles, panicles length, grain yield, straw yield and also showed maximum nutrient uptake of nitrogen, phosphorus and potassium in plant.
Open Access
Assessment of weed management practices under different establishment methods of direct seeded rice (Oryza sativa L.)
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Yadav, Rohit; Singh, D.K.
Field experiments were conducted at N.E. Borlaug Crop Research Centre of G. B. Pant University of Agriculture & Technology, Pantnagar (Uttarakhand) during crop growing years (Kharif 2021) to study the "Assessment of weed management practices under different establishment methods of direct seeded rice (Oryza sativa L.)". The soil was neutral in nature, high in organic carbon, low in available nitrogen, and medium inaccessible phosphorus and potassium. Rice variety Pant Dhan-24 was grown under 4 establishment methods (Broadcast, Semi-dry, Raised-bed, Mechanized line sowing) and 4 weed management practices (Manual wedding three times, pre jb post-emergence herbicide, pre-emergence jb manual weeding two times, and mechanical weeding through cono-weeder) and analyzed in split plot design with three replications. During the crop growing year of the 2021 study, mechanical line sowing recorded the highest number of tillers (m2) as well as dry matter accumulation jb semi-dry rice. Other growth indices were also superior to raised bed system. The no. of the population was found to be superior in the semi-dry method of rice. The number of panicles m-2 was significantly higher with mechanical line sowing during the crop growing year. The panicle weight was maximum with mechanical line sowing followed by broadcast. The grain, straw as well as biological yield were maximum with mechanical line sowing and significantly superior to other established methods. The highest % and uptake of N, P and K by rice grain and straw was found under mechanical line sowing. Total weed density and dry weight was recorded higher under broadcast method. The gross returns, net returns and B:C ratio was also found under mechanical line sowing. The lowest available soil Nitrogen, Phosphorous and Potassium found under broadcast method. The highest available N, P and K in soil was found under mechanical line sowing. Weed management practices significantly influenced the growth and yield attributes of rice during the crop growing of study. The growth parameters were found to be highest in the treatment pre-emergence herbicide jb 2 manual weeding but at par with 3 manual weeding. The highest % and uptake of N, P and K by rice grain and straw was found under pre-emergence herbicide jb 2 manual weeding. The yield attributes such as number of panicle m-2, panicles length, and grain wt. per panicle were found to be highest in the treatment pre-emergence herbicide jb 3 manual weeding. The grain, straw as well as biological yield of rice were maximum in the treatment pre-emergence herbicide jb 2 manual weeding but at par with 3 manual weeding. The species wise weed density, total weed density and total weed dry weight was found to be maximum under treatment mechanical weeding (cono-weeder). The highest net returns and B:C ratio were recorded in the treatment preemergence herbicide jb 2 manual weeding and also recorded highest soil available N, P and K under treatment pre-emergence herbicide jb 2 manual weeding. Thus, mechanical line sowing of rice establishment and weed management practice, preemergence herbicide jb 2 manual weeding has been found effective for sustaining the productivity and profitability of rice.
Open Access
Post-emergence herbicidal studies on weed and soil microbial growth under different establishment methods of lentil (Lens culinaris)
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Teja, Penumarthi Sai; Singh, Virendra Pratap
A field experiment was conducted at B1-block, Norman E. Borlaug Crop Research Center, GBPUAT, Pantnagar, Uttarakhand during the rabi season of 2021-22 to study and explore the efficacy of various post-emergence herbicides and their interaction with the tillage practices in reaping greater yields and economic returns. The experiment was laid out in split-plot design (SPD) with three replications which involved two main factors [Conventional tillage (CT) and Zero tillage (ZT)] and six sub factors with application of herbicides such as [Clodinafop-propargyl 16.5% SC+ Na-acifluorfen 8% EC at 122.5 g/ha (T1), Topramezone 33.6% SC at 20.6 g/ha (T2), Quizalofop-p-ethyl 5% EC at 50 g/ha (T3), Fenoxaprop-p-ethyl 10.5% EC at 67.5 g/ha (T4), Hand weeding twice (T5), Weedy check (T6)]. Small seeded lentil variety Pant Lentil-8 was sown on 13th December, 2021 and harvested on 4th April, 2022. The soil of the experimental field was silty clay loam in texture, neutral in pH, high in organic matter content and medium in soil nitrogen, phosphorus and potassium content. A total of 15 weed species were observed in the field out of which Phalaris minor among the grassy weeds while Rumex acetosella, Chenopodium album, Solanum nigrum, Coronopus didymus and Polygonum plebejum among the broad-leaved weeds were dominant. Zero tillage recorded lower weed density and dry matter accumulation of both grassy and broad-leaved weeds. Among the herbicides, ready-mix application of clodinafop-propargyl 16.5% SC+ Na-acifluorfen 8% EC at 122.5 g/ha was found effective in controlling weeds against quizalofop-p-ethyl and fenoxaprop-p-ethyl which recorded higher weed densities and dry matter accumulation due to their efficacy in controlling grassy weeds only. Higher crop, root and microbial growth was observed in zero tillage due to favourable soil environment which reflected in the yield whereas, among the herbicidal treatments viz., quizalofop-p-ethyl 5% EC at 50 g/ha recorded higher seed yield due to higher crop, root and microbial growth. Thus, higher profits were also gained in quizalofop-p-ethyl 5% EC 50 g/ha under ZT. Clodinafop-propargyl 16.5% SC+ Na-acifluorfen 8% EC at 122.5 g/ha and topramezone 33.6% SC 20.6 g/ha though controlled the weeds effectively, fetched lower yields due to the severe phytotoxicity on the lentil crop that resulted in stunted growth of lentil.
Open Access
Effects of sequential and combined application of tank mix herbicides on weed dynamics and productivity of maize (Zea mays L.)
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Shukla, Rajan; Bhatnagar, Amit
In India maize is mainly grown in kharif season in which rainfall and higher relative humidity render suitable conditions for weed growth. Although hand weeding renders better results but involve cost and labour simultaneously which makes it economically non-viable. Because of cost effective, saving labour and time, use of herbicides become necessary. Thus, to maintain a balance one or more efficient herbicides is tank mixed for excellent weed management strategy. Therefore, an experiment was conducted in kharif season 2021 at G.B. Pant University of Agriculture & Technology, Pantnagar to find out herbicide combination, their dose and application time. The soil of the experimental site was sandy loam in texture, neutral in reaction (pH 7.7), high in soil organic carbon (0.88%), low in available N (253.1 kg/ha), medium in both available soil phosphorus (16.6 kg/ha) and potassium (164.0 kg/ha). Nine treatments viz., weedy, weed free, Atrazine @ 1 kg a.i./ha PE fb hand weeding , Atrazine @ 0.75 kg a.i./ha PE fb Post E Topramezone @ 25.2 g a.i./ha , Atrazine @ 0.75 kg a.i./ha PE fb Post E Tembotrione @ 120 g a.i./ha , Atrazine @ 1.0 kg a.i./ha PE fb Post E Topramezone @ 25.2 g a.i./ha, Atrazine @ 1.0 kg a.i./ha PE fb Post E Tembotrione @ 120 g a.i./ha, Topramezone @ 25.2 g a.i./ha + Atrazine @ 0.75 kg a.i./ha Early Post E and Tembotrione @ 120 g a.i./ha +Atrazine @ 0.75 kg a.i./ha Early Post E were tested in RBD with three replications. Eleusine indica, Digitaria sanguinalis, Echinochloa colona and Eragrostis japonica were dominant among grassy weeds. Broad leaf weeds were Phyllanthus niruri, Commelina benghalensis, Cucumis melo and Cleome viscosa. Cyperus rotundus was only sedge. Eleusine indica was the major dominating weed which infested the crop at almost all stages of the crop which accounted for 35.4, 28.5 and 33.3% to the total weed population in weedy crop at 40 DAS, 50 DAS and at harvest, respectively. The results indicated that all herbicide treatments either in combination or tank mix were effective in reducing weed dry matter and were at par with weed free treatment. The highest grain yield (7202 kg/ha) was obtained in weed free treatment which was statistically at par with all herbicide treatments. Results indicated that single application of atrazine @ 0.75 kg a.i. along with either tembotrione 120 g a.i. or topramezone 25.2 g a.i./ha at 15 DAS is helpful in reducing weed growth and reduction in herbicide dose.
Open Access
Comparative performance of phosphate solubilizers with varying phosphorus levels in wheat under mollisols of Uttarakhand
(G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-09) Asraful Ali, Sk; Dhyani, Vipin Chandra
A field experiment was conducted during Rabi season of 2021-22 at Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture & Technology, Pantnagar (Uttarakhand) to evaluate the effect of phosphate solublizers under different P levels on wheat growth, yield attributes, yield, nutrient accumulation, and economics of wheat. The soil of the experiment site was sandy loam in texture having medium organic carbon (0.77%), low available nitrogen (167.3 kg/ha), medium available phosphorus (15.6 kg/ha) and low available potassium (166.1 kg/ha). Soil reaction was neutral (pH 7.10). The experiment consisted of 12 treatments, having three P levels (0, 50 and 100% as 0, 30 and 60 kg P2O5/ha) and four P solublizers (control, humic acid (HA) @ 10 kg/ha, phosphorus solublizing bacteria (PSB) @ 10 g/kg seed and HA @ 10 kg/ha + PSB @ 10 g/kg seed) and was laid in factorial randomized block design with three replications. The wheat variety HD 2967 was sown on 12th of November at 22.5 cm row spacing and with seed rate of 100 kg/ha. All the recommended package of practices except treatments was adopted in the experiment. 100% P led to a significant increase in plant height, tiller count and dry matter accumulation, NDVI and SPAD values compared to 50% P and control. Significantly higher grain, straw and biological yield, net return, B: C ratio was recorded with 100% P compared with 50% P application and control. The statistically higher plant height, tiller count and dry matter accumulation were found with HA + PSB application compared to sole application of PSB and control. Significantly higher grain straw and biological yields, and net return was found under HA + PSB compared to sole application of HA, sole PSB and control. A decrease in B: C ratio was observed with sole HA compared to PSB. Post-harvest soil P, plant P concentration and its uptake were also significantly higher in HA + PSB compared to sole application of HA, sole PSB and control. An increase of 3.7-6.9% in post-harvest soil P and 5.7-12.1% in plant P uptake was recorded with the application of HA + PSB compared to the other P solubilizers. 100% P with HA and PSB lead to statistically greater growth, grain yield, grain P content, total P uptake, post-harvest soil P, net return and benefit-cost ratio compared to other treatments. The spikes at harvest, grain yield and grain P content, total P uptake and post-harvest soil P obtained at 50% P with HA + PSB was statistically comparable to 100% phosphorus. It can thus be concluded that application of 100% P with HA and PSB lead to statistically greater growth, grain yield, grain P content, total P uptake, post-harvest soil P, net return and benefit-cost ratio compared to other treatments. Grain yield obtained in 50 % P with HA + PSB was statistically similar with 100% P.
Open Access
Effect of herbicides on weed growth and performance of (Kharif) mung bean (Vigna radiata (L.) Wilczek).
(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Piragi, Karisidda Siddappa; Tej Pratap
The field experiment was conducted to assess the effect of herbicides on weed growth and performance of Mung Bean (Vigna radiata) during the Kharif season of 2021 in the weed control (E) block of NEB,CRC at G.B Pant University of Agriculture and Technology, Pantnagar (UK) which falls under a sub-humid, sub-tropical climate with hot and dry summers and severe cool winters along with soil type of silty clay loam having high organic carbon (0.77%), medium available nitrogen (309.5kg/ha), available potassium (269.4kg/ha) and high available phosphorus (25.2kg/ha). The experiment comprised of 10 treatments viz.T1-pendimethalin 1kg/ha (PE), T2- pendimethalin 1kg/ha (PE) fb one hand weeding at 20 DAS, T3- fomesafen +fluazifop-p-butyl 250 g/ha (RM) (PoE) at 15 DAS, T4-fluazifop-p-butyl 150g/ha (PoE) at 15 DAS, T5-quizolfop ethyl 50g/ha (PoE) at 15 DAS, T6-propaquizafop 75g/ha (PoE) at 15 DAS, T7- sodium acifluorfen + clodinafop-propargyl 245g/ha (RM) (PoE) at 15 DAS, T8-pendimethalin 1kg/ha (PE) fb fluazifop-p-butyl 150g/ha (PoE) at 15 DAS, T9-hand weeding at 20 and 40 DAS and T10-unweeded control. The field experiment was laid in RBD with three replications using mung bean verity Pant mung-2 on 8 August 2021. Dominant weed species in the experimental field were Trianthema portulacastrum (27.9%), Cyperus rotundus (22.0%), Mollugo pentaphylla (24.5%), Cynodon dactylon (1.8%) and Digitaria sanguinalis (6.2%). Hand weeding at 20 and 40 DAS showed maximum weed control efficiency among all treatments followed by pendimethalin 1kg/ha (PE) fb one hand weeding at 20 DAS and fomesafen +fluazifop-p-butyl 250 g/ha (RM) (PoE) at 15 DAS were also showed higher weed control efficiency. Hand weeding at 20 and 40 DAS was having the maximum number of branches per plant (8.5), number of trifoliate leaves per plant (9.8) and dry matter accumulation per plant (20.8) followed by pendimethalin 1kg/ha (PE) fb one hand weeding at 20 DAS and fomesafen +fluazifop-p-butyl 250 g/ha (RM) (PoE) at 15 DAS showed higher values. Yield attributing characters like number of pods per plant (16.0), number of grain per pod (7.0), 1000- grain weight (35.3) and grain yield per plant (4.1) were also found maximum in hand weeding at 20 and 40 DAS and it was followed by pendimethalin 1kg/ha (PE) fb one hand weeding at 20 DAS and fomesafen +fluazifop-p-butyl 250 g/ha (RM) (PoE) at 15 DAS. Hand weeding at 20 and 40 DAS recorded higher nutrients uptake (N, P and K) per hectare than other treatments. Fomesafen +fluazifop-p-butyl 250 g/ha (RM) (PoE) at 15 DAS recorded highest B:C ratio (2.95) among all the treatments.

Theses

Browse

Thesis Type

Type

Author

Date

Subject

Search Results