Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga

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A STUDY OF DIFFERENT LEVELS AND FORMS OF NITROGEN FERTILIZERS EFFECT ON GROWTH AND YIELD OF PADDY IN COASTAL KARNATAKA
(KELADI SHIVAPPA NAYAKA UNIVERSITY OF AGRICULTURAL AND HORTICULTURAL SCIENCES, SHIVAMOGGA (COA, SHIVAMOGGA), 2023-08-09) ARVIND KAMBLE; Dr. JAYAPRAKASH, S. M; Dr. B. C. DHANANJAYA
A field experiment was conducted during Kharif 2021 at Zonal Agricultural and Horticultural Research Station, Brahmavar, to study the different levels and forms of nitrogen fertilizers effect on growth and yield of paddy in coastal Karnataka. The experiment was laid out in randomized complete block design with six treatments and replicated four times. Among the different levels of nitrogen and nano urea, the treatments T1, T3, and T5 involved applying three levels of nitrogen (60, 75 and 90 kg ha-1) in equal portions as basal + top dressed at 30 and 60 DAT, whereas T2, T4, and T6 applied one-third of the recommended nitrogen levels (60, 75 and 90 kg ha-1) as basal + top dressed with 4ml L-1 of nano urea spray at 30 and 60 DAT, respectively, along with the recommended levels of phosphorus and potassium (30 and 75 kg ha-1). Results revealed that, treatment T5, application of 90: 30: 75 kg NPK ha-1 recorded significantly higher grain and straw yield (6250 and 7375 kg ha-1, respectively) as compared to rest of the treatments. The same treatment recorded significantly higher plant height (100.28 cm), number of tillers m-2 (470.67), number of leaves m-2 (1587.68), leaf area m-2 (15706.40 cm2) and yield attributing parameters like panicle length (23.95 cm), number of filled grains per panicle (140.29) and recorded higher harvest index (0.46). The total nutrient uptake of nitrogen, phosphorus and potassium (143.09, 55.80 and 155.27 kg ha-1, respectively) with higher benefit cost ratio (2.40) and net returns
Open Access
A STUDY ON KNOWLEDGE AND SOCIO-ECONOMIC IMPACT OF CARP FISH SEED GROWERS IN SHIVAMOGGA DISTRICT
(Keladi Shivappa Nayaka University Agricultural and Horticultural Science (COA,Shivamogga), 2023-12-23) MANJUNATH, D.; Dr. GANESH PRASAD; Dr. SAHANA, S
India is known for production of major carp fish species such as Catla, Rohu and Mrigal and it was dominates in carp farming due to the tolerance of carp species to adverse water qualities and having assured market in the country. India is self-sufficient to meet out the existing demand of seed of principal carp fish species. At present India has produced 52,170.6 million Carp fries and Karnataka state was producing 1603.71 Lakh fries among those districts Shivamogga has highest production of 435.54 lakhs fries. Thus, study on knowledge and socio-economic impact of carp fish seed growers in Shivamogga district was conducted during 2022-23. For the present study two taluks viz., Shivamogga and Bhadravathi were selected based on highest area under carp fish seed production. From each taluk 80 respondents were selected. By random sampling techniques. Thus, total sample size for the study was 160. The primary data were collected using pre-tested interview schedule. The results shows that majority of respondents had medium (54.38%) level of knowledge. More than ninty per cent of farmers (93.12%) had shown a positive social impact with a significant z value of 10.06. The Positive economic impact was observed. The net returns per rupee of expenditure came to Rs. 1.67/- from carp fish seed production compared to paddy production at Rs. 1.26/- which was relatively higher. In this study major technical constraints faced by farmer was high rate of mortality with mean score of 65.34 and poor transportation facilities with mean score of 51.52 ranks first in infrastructural constraints whereas, in economic constraint, high initial investment with mean score of 69.44. Majority of respondents suggested accessibility to credit facilities (74.38%). Due to lack of knowledge on scientific management farmers cannot take up in time operations. Hence, suitable strategies should be developed to achieve the success.
Open Access
A STUDY ON PERFORMANCE OF LARGE-SCALE ADIVASI MULTI-PURPOSE COOPERATIVE SOCIETIES IN KARNATAKA
(Keladi Shivappa Nayaka University Agricultural and Horticultural Science (COA,Shivamogga), 2023-11-17) VARSHA, S. C.; Dr. BASAVARAJ BEERANNAVAR; Dr. KRISHNAMRTHY. A. T.
The present study was conducted in Karnataka state during the year 2022-23, to assess the performance of LAMPS. Ten functioning LAMPS were selected for the study based on highest membership. From each LAMPS 15 members were selected randomly. Thus, the total sample was 150 respondents. For analyzing the details of NTFPs 85 respondents who were involved in NTFP collection were selected. The study indicated that exactly half of the selected LAMPS (50.00 %) had medium level of overall performance. Medium level of knowledge about the activities of LAMPS was found in 52.00 per cent of the respondents. About 51.34 per cent of the respondents belonged to middle age group and educated up to high school (27.33 %). Majority of the respondents belonged to nuclear family type (66.00 %) and small family size (56.00 %). More than half of the respondents had marginal land holding (58.00 %) and had taken up agriculture as primary occupation (56.00 %). Majority belonged to medium level of annual income (54.67 %), mass media exposure (40.67 %) and extension contact (47.33 %). Majority (71.33 %) of the respondents borrowed credit from LAMPS. NTFP collection was done by more than half (56.67 %) of the respondents. Less than half (40.00 %) of the respondents had medium level of experience in NTFP collection and earned medium (44.71 %) level of income from NTFP collection. The major benefits derived by members from LAMPS are credit services (70.00 %), NTFP marketing (56.67 %), social activities (54.00 %) and agricultural inputs and implements (49.33 %). Non-availability of loan in required quantum, not conducting training programs on regular basis, government restrictions in collecting NTFP from forest and lack of processing units were the problems expressed by members of LAMPS.
Open Access
About UAHS
(UAHS, SHIVAMOGGA, 2015)
Open Access
ADOPTION OF PRODUCTION TECHNOLOGIES AND MARKETING BEHAVIOUR OF TOMATO GROWERS IN CHIKAMAGALURU DISTRICT
(University of Agricultural & Horticultural Sciences, Shivamogga, 2017-08-24) SHRIKANT; Dr. KRISHNAMURTHY, A.T; Dr. BASAVARAJ BEERANNAVAR
The study was conducted during the year 2017-18 inChikamagaluru district of Karnataka state with a sample size of 120 farmers. Simple random sampling procedure was used to select the respondents. The data was collected with the help of structured interview schedule. The socio-economic profile of the respondents revealed that, majority of the respondents belong to middle age group (51.67%), high school education (33.34%), small family size (50.00%) and land holding category (41.67%), medium annual income (50.84%). Whereas, majority of the respondents had medium extension contact (48.34%), extension participation (54.67%), mass media participation (66.67%), scientific orientation (55.84%), achievement motivation (55.84%), risk orientation (44.16%), innovativeness (48.34%) and low level of social participation (51.66%). It was observed that half (50.00 %) of the respondents belonged to medium level of adoption category. Whereas, 25.84 per cent and24.16per centof respondents belonged to high and low level of adoption category respectively. With respect to marketing behaviourmore than half (57.50 %) of respondents had medium level of marketing behaviour. Followed by, (21.66%) highand low( 20.84%) The variables likeeducation, landholding, annual income, extension contact, extension participation, social participation, scientific orientation, achievement motivation and innovativeness had significant association with adoption of tomato production technologies at 0.01 levels. Whereas, age, family size, mass media participation risk orientation had non-significant association with adoption of tomato production technologies. The major constraints faced by the famers in adoption of production technologies and marketing of tomato were “Costly storage facilities”,“Labour problem”, “Diseases and pestproblem”, “High charges of commission agent”, “Fluctuation in market price” and “Lack of remunerative price”.
Open Access
AGRO - TECHNIQUE INTERVENTION FOR STRAWBERRY (Fragaria x ananassa Duch.) ON VERTICAL GROWING SYSTEM UNDER NATURALLY VENTILATED POLYHOUSE
(University of Agricultural & Horticultural Sciences, Shivamogga (COH, MUDIGERE), 2017-07-23) RAGHAVENDRA PRASAD; Dr. D. MADAIAH.; Dr. M. DINESH KUMAR
An experiment was conducted to study the Agro-technique intervention for strawberry (Fragaria x ananassa Duch.) on vertical growing systemunder low cost polyhouse of the Department of Fruit Science, College of Horticulture, Mudigere, during 2016-17. The work was initiated to standardize plant density and soilless substrates (viz., perlite, vermiculite, coir pith, sphagnum moss and vermicompost) on growth, yield and quality. The experiment was laid out in split plot design with eight main treatments (M-media combinations) and two sub treatment (D-plant density) with sixteen treatment combination (M x D) replicated twice. The results revealed that among different plant density D1 recorded highest per cent survivability (90.00) and lowest per cent mortality (10.00) whereas, media combination M1 with perlite+vermicompost was significantly superior with respect to all traits. In interaction, M1D1-perlite+vermicompost with one plant per spot recorded highest plant height (18.25 cm), number of leaves (17.17), plant spread North-South and East-West (25.12 cm and 27.97 cm respectively), number of crowns (2.57/plant), leaf area (108.12cm2), leaf area index (1.37), total dry weight (29.94 g) and total chlorophyll content (2.57mg/g of fresh weight). M7D1 treatment with vermiculite+coir pith+vermicompost took minimum number of days for flowering (48.32) whereas, M1D2 with perlite+vermicompost and two plants per spot took longest duration for flowering (72.59 days). Highest number of flowers per plant (24.90), number of fruits per plant (24.50), fruit diameter (3.98cm) and yield per plant (365.90g) were recorded in perlite+vermicompost treatment with one plant per spot. The fruit quality parameters liketotal soluble solids (12.68°Brix), ascorbic acid content (39.62 mg/100 g), reducing sugar (5.94 %), non-reducing sugar (1.92 %), total sugars(7.50%), sugars to acid ratio(25.12) and titratable acidity (0.97 %) were highest in M1D1 and resulted in highest benefit cost ratio (2.49). Treatment M1 under D1 plant density produced superior vegetative, reproductive and quality traits.
Open Access
AGRONOMIC INTERVENTIONS TO ENHANCE THE PRODUCTIVITY OF FOXTAIL MILLET (Setaria italica L.) IN SOUTHERN TRANSITION ZONE OF KARNATAKA
(University of Agricultural & Horticultural Sciences, Shivamogga, 2015-05-22) NANDINI, K.M.; Dr. S. SRIDHARA; Dr. NARAYANA. S. MAVARKAR
A field experiment was conducted at University of Agricultural and Horticultural Sciences, Navile, Shivamogga during kharif2014 onredsandy clay soil to study the growth analysis, yield and quality of guar genotypes as influenced by planting density. The experiment was laid out in factorial randomized complete block design with three replications. There were twelve treatment combinations comprised of four spacing (45cmx15cm, 30cmx15cm, 45cmx10cm and 30cmx10cm) and three genotypes (RGC-I003, RGC-936 and HG-365). Among the spacing, significantly higher grain yield (743.89 kgha-l), stover yield (1629.94 kgha-l),RUE (1.32Mjm"), HUE (1.53 x 10-2), PTUE (2.29 x 1O-2) and quality parameters like gum per cent (30.36), protein percent(30.94) andendosperm percent(33.49), viscosity (236.47 cps I) were recorded inplants grown at30cmx10cm. Among thegenotypes, significantly higher total dry matter (23.38 g plant"), grain yield (898.18 kg ha-l),stover yield (1931.39 kg ha-l),RUE (1.26 Mj m"), HUE (1.60 x 10-2), PTUE (2.39 x 10-2) and quality parameters like gum per cent (31.09), protein per cent (31.68) and endosperm per cent(33.96) viscosity RGC-I003 (245.75 CpS-I)were recorded with the RGC-I003. This could be due to genetic potentiality ofthegenotypes. The interaction of spacing and genotypes were found to be statistically non significant. Thefunctional growth models like Logistic, Gompertz and Richards shows the pattern of drymatter accumulation of guar genotypes atdifferent spacing.
Open Access
AN ASSESSMENT OF LIVELIHOOD SECURITY AMONG FARM WOMEN
(Keladi Shivappa Nayaka University Agricultural and Horticultural Science (COA,Shivamogga), 2024-11-24) ABHISHEK, P. J.; BHARTH KUMAR, T. P; Dr. BASAVARAJ BEERANNAVAR
The present study was conducted in Davanagere district of Karnataka in 2022-23 to assess the livelihood security among farm women. Channagiri, Davanagere and Jagaluru taluks were purposively selected because of their highest area under the plantation, cereals and vegetable crops, respectively and also due to their higher farm women population. From each taluk five villages were selected based on maximum number of farm women. Ten farm women were selected randomly from each village constituting total sample size of 150. The study indicated that nearly half of the farm women belong to high category of overall livelihood security in plantation cropping situation (44.00 %) followed by medium category in cereal cropping situation (58.00 %), vegetable cropping situation (44.00 %) and also in pooled situation (46.00 %). The Kruskal-Wallis one-way ANOVA test showed highly significant difference among livelihood security of farm women in different cropping situations with computed test static 11.75 with p value 0.003. The characteristics such as land holding, annual income, cosmopoliteness and stress bearing ability of farm women had a highly significant association with the livelihood security at one per cent level of significance. The variables like, social participation, achievement motivation and assets owned of farm women had a significant association with the livelihood security at five per cent level of significance. The constraints faced by farm women concerning their livelihood security are lack of knowledge about balanced diet for the family ranked 1st, lack of credit to invest in other income-generating activities other than agriculture ranked 2nd and electricity problem ranked 3rd. The major suggestions provided by farm women to improve their livelihood security were; to provide knowledge about balanced diet for the family (Rank I), close behind is the recommendation for timely credit with subsidy (financial support) (Rank II) and regular supply of power (Rank III).
Open Access
ANALYSIS OF GENETIC DIVERGENCE IN GROUNDNUT (Arachis hypogaea L.) GENOTYPES
(University of Agricultural & Horticultural Sciences, Shivamogga, 2015-08-14) SANJEEVAKUMAR PATIL; Dr. S. SHIVANNA; Dr. B. M. DUSHYANTHA KUMAR
The genetic variability is the pre-requisite for any plant breeding programme. Fourty nine groundnut genotypes accessions were evaluated in a Simple Lattice Design with two replications during Kharif 2014 at college of Agriculture, UAHS, Shivamogga. Data were collected on 15 quantitative traits and subjected to variability, association and diversity studies. The results of the investigation revealed that, there were significant variation among the genotypes for yield and yield contributing traits. The high PCV and GCV values were recorded by secondary branches per plant, immature pods per plant, mature pods per plant, pod bearing nodes per plant and pod yield per plant. Broad sense heritability as well as expected GAM was higher for matured pods per plant, days to 50 per cent flowering, kernel weight per plant, 100 kernel weight, pod bearing nodes, immature pods per plant, plant height and secondary branches per plant. Association analysis revealed significant positive correlation of pod yield per plant with number of pod bearing nodes, number of matured pods per plant, kernel weight per plant and days to 50 per cent flowering. Positive direct effects were recorded by number of matured pods per plant, pod yield per plant, kernel weight per plant, 100 kernel weight, number of secondary branches and number of primary branches per plant. Based on D2 values fourty nine genotypes were grouped into fourteen clusters. Cluster I was the biggest with 21 genotypes followed by cluster IV, VI and III. The maximum contribution for the diversity was observed in pod yield per plant followed by days to 50 per cent flowering. The genotypes like GPBD-5, SB-T1, SB-T21 and VB-T35 are identified as high yielding and most diverse genotypes, the genotypes SB-T1 and VB-T14 are identified as resistant to root knot nematode disease. These genotypes could be utilizing in hybridization among promising combinations to develop productive segregants.
Open Access
ANNUAL REPORT 2014 - 15
(University of Agricultural and Horticultural Sciences Shivamogga - 577 225. Karnataka, India, 2015) Vasudevappa, C.
Open Access
APHID (APHIDIDAE: HOMOPTERA) VECTORS OF POTATO VIRUSES AND THEIR MANAGEMENT
(University of Agricultural & Horticultural Sciences, Shivamogga, 2015-12-10) KUMARA, B. B.; Dr. C. M. KALLESHWARASWAMY; Dr. M. MANJUNATHA
Population dynamics of potato aphids was conducted during Kharif and Rabi of 2014-15 in potato fields of chikkamagaluru district. Five locations were selected during the study period at both the seasons. Among five locations Beekanahalli (location 3) has recorded highest aphid population on crop followed by Mugalavalli (location5) during Kharif. In Rabi, highest aphid population was recorded on crop in Lakshmipura II (location 3). Six species of aphids were trapped on sticky trap and four species on water traps during kharif. In Rabi, five species of aphids were trapped on sticky trap and four species on water traps. Aphids had positive correlation with minimum temperature and maximum temperature in almost all locations. The per cent PVY incidence was more in Kharif compared to Rabi in all the locations. The transmission efficiency of potato viruses by three aphid vectors (M. persicae, A. gossypii and A. craccivora) was studied. Efficiency was measured by single aphid inoculation following a single acquisition access period (AAP) and the number of plants showing symptoms to which the aphids could successfully transmit the virus. Single aphid inoculation studies for PVY indicated that M. persicae (66.66%) was significantly more efficient in transmitting PVY than A. gossypii (26.66%) and A. craccivora (16.66%). Settling behaviour of aphids was studied on healthy potato plant and PVY infected plants. On healthy plants, all the three species took more time to initiate the probe compared to PVY infected plants. Myzus persicae initiated probing earlier than other two species. Insecticides were evaluated against potato aphids and also virus incidence in two locations. In one location, thiomethoxam followed by imidacloprid and acephate were effective in controlling aphid population. PVY incidence was low in thiomethoxam treated plots compared to other insecticides. However, none of the insecticides were effective in reducing PLRV incidence. In another location, imidacloprid, thiomethoxam and acetamiprid are found effective.
Open Access
Asseessment of yield loss and management of yellow mite, Polyphagotarsonemus latus Banks on Bell pepper (Capsicum annum L.) under protected cultivation
(University of Agricultural & Horticultural Sciences, Shivamogga (COH, MUDIGERE), 2016-10-20) PADMASHRI, R.; Dr. Rajashekharappa. K; Dr. Revanna Revannavar
An investigation was carried out on insect and mite pest complex, yield loss due to yellow mite, Polyphagotarsonemus latus (Banks) and management of yellow mite using newer molecules of acaricides. The experiments were carried out under naturally ventilated polyhouse condition during 2015-16 at Department of Entomology, College of Horticulture, Hiriyur, Chithradurga district, Karnataka, India. Seven insect and mite pests along with natural enemies belonging to six orders and six families were recorded on capsicum. They included yellow mite, P. latus (banks), thrips, Scirtothrips dorsalis (Hood), fruit borer, Spodoptera litura (Fabricius), mealy bug, Phenacoccus peruvianus (Granara), a grasshopper and the natural enemies like predatory mite, spiders and chrysopids, Chrysoperla sp. The crop loss due to yellow mite, P. latus in capsicum under protected cultivation was 29.78 per cent. The fruit yield recorded from treated and untreated plots was 5.34 kg/ 5m×3m plot and 3.75 kg/5m×3m plot, respectively. Among the selected acaricides, fenpyroximate 5 SC was effective against egg population at 3, 7 and 10 days after the first spray, second and third spray against egg population on capsicum under protected condition. Against active stages (nymph and adult), fenpyroximate 5 SC was effective at 3, 7 and 10 days after spray at first and third spray. The least effective acaricide was dicofol 18.5 EC. The order of efficacy of these acaricides against mite population was fenpyroximate 5 SC > diafenthiuron 50 WP > chlorofenapyr 10 EC > spiromesifen 22.9 SC > propargite 57 EC > fenazaquin 10 EC > dicofol 18.5 EC.
Open Access
ASSESSMENT OF ABOVE-GROUND BIOMASS CARBON USING OPTICAL AND MICROWAVE REMOTE SENSING DATA
(College of Forestry, Ponnampet Keladi Shivappa Nayaka University of Agricultrual and Horticultural Sciences, Shivamogga, 2023-12-14) NITHIN, P. S.; Dr. G. M. DEVAGIRI; Dr. SATHISH. B. N.
Forests are nature’s most attractive and versatile renewable resources, providing a wide range of social, economic, environmental services and benefits. The modelling of carbon balance depends heavily on forests, as they are considered as carbon reservoir. Accurate measurements of biomass and other forest biophysical parameters are necessary to better understand the global carbon cycle. Remote sensing (RS) based AGB estimation approaches have become increasingly popular as non-destructive means of biomass estimation but constitute limited applications, since the green felling in natural forests and plantations is prohibited. The primary sources for AGB estimation are optical data, radio detection and ranging (RADAR) and light detection and ranging (LIDAR) systems. In this context the study was carried out in the Dubare forest of moist deciduous vegetation type of Kushalnagar taluk, Kodagu district to assess the above-ground biomass carbon using optical and microwave remote sensing data. Totally 25 field sampling plots were randomly used for field data collection. Previously developed relevant allometric equations were used to estimate above-ground tree biomass (AGTB) using GBH and height in each plot. The results revealed that the AGTB ranged from 129.05 Mg ha-1 to 355.54 Mg ha-1, total carbon stocks ranged from 60.65 Mg ha-1 to 167.11 Mg ha-1, while CO2e was found to be ranging from 222.4 Mg ha-1 to 612.7 Mg ha-1. The regression model obtained between above-ground tree biomass and Synthetic Aperture Radar (SAR) backscatter value performed well with VH polarization than VV polarization with an R2 value of 0.69 and RMSE of 31.87 Mg ha-1. The best fit regression model was obtained between above-ground tree biomass and Normalized Difference Vegetation Index (NDVI) with the highest R2 value of 0.75 and a low RMSE value of 28.20 Mg ha-1
Open Access
ASSESSMENT OF BANANA CULTIVARS FOR FLOUR PRODUCTION
(College of Horticulture, Mudigere, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 2022-12-10) GURURAJ BASAVARAJ BAGALAKOT; Dr. CHAITANYA, H. S.; Dr. SHIVAKUMAR, B. S.
The study "Assessment of Banana Cultivars for Flour Production" was carried out during 2021-22 at College of Horticulture, Mudigere, under laboratory conditions. The first experiment was laid out in Factorial Completely Randomized Design (FCRD) with two factors viz., C- Cultivars of banana (C1- Ney Poovan, C2- Nendran, C3- Mysore baale, C4- Grand naine and Cs- Rajapuri), M- Maturity stage (M)- Unripe stage, M2- Ripe stage) and their interaction (CM) in 3 replications. The main objective was to evaluate banana cultivars and the stage of harvest for flour production. Among different treatment combinations, powder recovery (%) was found to be maximum in C2M (Nendran at the unripe stage; 25.87%) and drying duration was minimum (2 hrs. 55 min) in CM (Ney Poovan at the unripe stage). Bio-chemical parameters like starch (69.03%), carbohydrates (86.56%), potassium (988.25 mg/100g) and energy (355.88 kcal) were found to be maximum in C2M1 which is on par with CM. While, TSS and protein were optimum in both the treatment combinations. The highest overall sensory acceptability score was noticed in C2M1 (4.65), followed by CM (4.41). The production cost was found minimum for CM (118.86 Rs/kg of flour), which is less than C2M1 (155.20 Rs/kg of flour). Based on physical, bio-chemical and production cost, it was proved that CM, is best suited for flour production. Based on the physical, bio-chemical and organoleptic evaluation, the best three treatments from experiment-1 were selected for the second experiment. The second experiment was laid out in a Completely Randomized Design (CRD) in 3 replications to study the effect pre- treatments on physico-chemical properties of banana flour. Among the pre-treatments, 750 ppm Potassium Meta bi-Sulphite (KMS) treated showed better results for physical and bio- chemical characteristics.
Open Access
ASSESSMENT OF CARBON SEQUESTRATION POTENTIAL IN DIFFERENT LAND USE SYSTEMS OF VIRAJPET TALUK, KODAGU DISTRICT
(University of Agricultural & Horticultural Sciences, Shivamogga, 2018-08-14) PRADEEPA, K. L; Mr. Ravikumar, D; Dr. H. M. Chidanandappa
A study was conducted at UAHS, Shivamogga to know the carbon sequestration potential of soils under different land use systems in Virajpet taluk, Kodagu district, Karnataka. The representative soil samples were collected from major land use systems viz., sacred groves, coffee based agroforestry-indigenous, coffee based agroforestry-exotic and paddy land use system from 0-15 cm, 15-30 cm, 30-60 and 60-90 cm soil depths. The present investigation indicated that, texture varied from loamy sand to clay loam. The pH was acidic in all the soils under investigation and electrical conductivity was normal with respect to salt accumulation. The CEC of soil ranged from 14.43 to 29.95 cmol (p+) kg-1. The highest mean value of BD was observed under paddy land use system (1.30 Mg m-3). The highest mean value of available nitrogen (343.64 kg ha-1) was observed in coffee based agroforestry-indigenous and highest mean value of available phosphorous (57.32 kg ha-1) and sulphur (45.09 mg kg-1) was observed in sacred groves. Among different land use systems, the higher mean value of PDOC (13.56 g kg-1), PPOC (1026.26 mg kg-1), CWEC (548.75 mg kg-1), SMBC (626.78 mg kg-1), TOC (31.93 g kg-1), TC (52 g kg-1) and TIC (0.58 g kg-1) content was observed in sacred groves and decreases with increasing soil depth. The E4/E6 value was lower than 6 in all the studied land use systems. The soils under sacred groves has recorded the highest mean value of Humic acid and Fulvic acid (4.50 and 5.51).The highest mean value of carbon sequestration potential was observed in sacred groves (325.25 t ha-1) followed by coffee based agroforestry-indigenous (239.40 t ha-1) and lowest mean value of carbon sequestration potential was observed in paddy land use system (162.96 t ha-1
Open Access
ASSESSMENT OF COMBINING ABILITY OF CUCUMBER (Cucumis sativus L.) GERMPLASM FOR EXPLOITING HETEROSIS
(University of Agricultural & Horticultural Sciences, Shivamogga, (COH, MUDIGERE), 2017-07-12) PRASHANT R. NAIK; Dr. Nagarajappa Adivappar; Dr. Srinivasa, V
The present investigation on heterosis and combining ability studies in cucumber (Cucumis sativus L.) was undertaken at ZAHRS, Navile, Shivamogga, Karnataka during kharif and rabi seasons of year 2016-17. The diversed group of 12 genotypes (nine lines and three testers) of cucumber and two check cultivars (Poinsette and Malini) were used to fulfil the objective such as to estimate the general combining ability (gca) and specific combining ability (sca) magnitude and direction of heterosis for yield and yield attributing traits, to identify the highly heterotic combinations. A total of 27 crosses were developed by crossing with nine lines three testers. All the crosses were evaluated along with the parents in randomized block design with two replications. The magnitude of heterosis over the standard checks (Poinsette and Malini) for important traits viz., days to first female flower appearance ranged from -7.80 to 13.65 and -1.49 to 21.43 per cent, for node at which first female flower appearance -28.83 to 46.34 and -31.82 to 36.36 per cent, for number of fruits per vine -33.64 to 48.85 and -36.52 to 40.43, for yield per vine -18.36 to 20.47 and -28.76 to 5.12 per cent. The parents Himangi, US-640, DWD and Haveri Local are the good general combiners while, DWD × Haveri Local, US-640 × Haveri Local and Sabra × Bagalkot Local exhibited the significant positive sca effect for yield attributing traits. The predominance of sca effect over gca effect for yield indicate the predominance of non-additive gene action. The present study revealed that heterosis breeding is useful for the improvement of cucumber for exploitation of additive or non-additive gene action.
Open Access
ASSESSMENT OF EARLY GROWTH PERFORMANCE OF Melia dubia Cav. CLONES
(KELADI SHIVAPPA NAYAKA UNIVERSITY OF AGRICULTURAL AND HORTICULTURAL SCIENCES, SHIVAMOGGA (COF, PONNAMPET), 2020-12-14) NAYANA H.; Dr. ASHOK B DIVATARA; Dr. GANAPATHI
Clonal forestry has a remarkable contribution for paper, packaging, tissue paper, paperboard, plywood, veneer industries, etc., for which wood is being used as a raw material. Industrial agroforestry with the fast-growing species viz., poplar, eucalyptus, willow, leucaena, casuarina, bamboo and Malabar neem can be grown commercially in private lands as suitable species for raw materials in many wood based industries. Among these species, M. dubia (Malabar neem) is an indigenous tree species belongs to family Meliaceae that has emerged as a suitable raw material due to its increased pulp recovery and exceptional strength. The timber is ideal for plywood manufacture at commercial scale Thus in the present study, the early growth performance of M. dubia clones was carried out at the Main Agricultural and Horticultural Research Station, Iruvakki, Sagara (taluka), Shivamogga (district), Karnataka. Ten M. dubia clones were planted in RCBD design with the spacing of 4m x 4m in five replications. The observations on total height and collar diameter were recorded up to 9 months. The significant difference was observed for height and collar diameter of different M. dubia clones. Considerable height was recorded in clone IFGTBC10 and IFGTBC8 (269.70 cm and 233.56 cm) and maximum collar diameter was recorded in clone IFGTBC8 and IFGTBC10 (1.79 cm and 1.71 cm). Substantial volume index was recorded in clone IFGTBC10 (799.70 cm3) at nine months after planting. Clonal repeatability of Malabar neem for height (0.91) and collar diameter (0.93) was high. Existences of significant difference in soil-physicochemical properties were noticed between initial and final readings.
Open Access
ASSESSMENT OF EARLY GROWTH PERFORMANCE OF Melia dubia Cav. CLONES
(University of Agricultural and Horticultural Science, (C O F, Ponnampet), 2020-12-10) NAYANA H.; Dr. ASHOK B DIVATAR; Dr. GANAPATHI
Clonal forestry has a remarkable contribution for paper, packaging, tissue paper, paperboard, plywood, veneer industries, etc., for which wood is being used as a raw material. Industrial agroforestry with the fast-growing species viz., poplar, eucalyptus, willow, leucaena, casuarina, bamboo and Malabar neem can be grown commercially in private lands as suitable species for raw materials in many wood based industries. Among these species, M. dubia (Malabar neem) is an indigenous tree species belongs to family Meliaceae that has emerged as a suitable raw material due to its increased pulp recovery and exceptional strength. The timber is ideal for plywood manufacture at commercial scale Thus in the present study, the early growth performance of M. dubia clones was carried out at the Main Agricultural and Horticultural Research Station, Iruvakki, Sagara (taluka), Shivamogga (district), Karnataka. Ten M. dubia clones were planted in RCBD design with the spacing of 4m x 4m in five replications. The observations on total height and collar diameter were recorded up to 9 months. The significant difference was observed for height and collar diameter of different M. dubia clones. Considerable height was recorded in clone IFGTBC10 and IFGTBC8 (269.70 cm and 233.56 cm) and maximum collar diameter was recorded in clone IFGTBC8 and IFGTBC10 (1.79 cm and 1.71 cm). Substantial volume index was recorded in clone IFGTBC10 (799.70 cm3) at nine months after planting. Clonal repeatability of Malabar neem for height (0.91) and collar diameter (0.93) was high. Existences of significant difference in soil-physicochemical properties were noticed between initial and final readings.

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