National Horticultural Research and Development Foundation

Aurangābād, India

National Horticultural Research and Development Foundation

Aurangābād, India
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Singh B.K.,National Horticultural Research and Development Foundation | Pandey S.,NHRDF | Pandey J.G.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Pestology | Year: 2013

Thrips is a major insect pest of onion affecting yield as well as quality of bulbs adversely and consistent use of insecticides has created problem of pollution as also the resistance in the pests. Use of neem-based insecticides has been found promising against onion thrips without any adverse effect on the soil and environment. A field experience was conducted at Regional Research Station, Nasik during Rabi 2000-01 and 2001-02 on onion crop to assess the effect of some commonly available neem based insecticides viz. Econeem plus, Nimbicidine, Neemarin, Bioneem, Neemashtra, and Neemark, which were compared with Deltamethrin (check) and control plot. The results revealed that 4 spray of Deltamethrin 2.8% EC @ 0.04% at 10 days interval performed better in reducing thrips papulation as well as increasing the yield. However, among the neem based, insecticides, considering the thrips management Neemarin 1% EC @ 0.1% were found promising.


Singh B.K.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
International Journal of Agricultural and Statistical Sciences | Year: 2015

A field experiment was conducted for the management of okra pest during Kharif 2010 and 2011 at R.R.S., Nasik. Two modules were evaluated i.e. organic module and other modules was farmer practices. Pooled data of two consecutive years revealed that significantly lowest cumulative fruit borer infestation (1.17%), lowest mean jassid population (13.71 nymph/thee leaf) and highest marketable yield (111.82 q/ha) was recorded in farmer practice. The incidence of YVMV did not differ significantly during the entire observational period.


Pandey S.,National Horticultural Research and Development Foundation | Singh B.K.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Pestology | Year: 2013

Onion thrips (Thrips tabaci L.) is a serious pest of onion crop, which causes economical loss. However, some of these chemicals become ineffective later due to resistance developed by thrips. Considering the resistance problem, a study on effect of alternate sprays of chemical insecticides and neem based biopesticides for control of onion thrips were carried out during Rabi, 2002-03, 2003-04, and 2004-05 at Regional Research Station, NHRDF Nasik. The results of the experiment revealed that alternate spray of Deltamethrin 2.8% EC @ 0.04% and Clorphyrifos 20% EC @ 0.33%, was found better in respect of reduction in thrips population (17.30 nymph/plant) followed by alternate spray of Deltamethrin 2.8% EC @ 0.04% and Econeem plus 1.0% EC @ 0.1% with 18.44 nymph/plant.While highest yield (292.01 q/ha) was recorded in alternate spray of Deltamethrin 2.8% EC @ 0.04% and Neemazal @ 0.1%. Sprayed plot and highest cost benefit ratio (1:22.31) was recorded in alternate spray of Deltamethrin 2.8% EC @ 0.04% and Malathion @ 0.14%.


Singh B.K.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Pestology | Year: 2011

Different bio-insecticides were evaluated under field condition at Regional Research Station Salaru Karnal (Haryana) for the management of the shoot and fruit borer, Earias vittella (Fabr.) on okra during Kharif season of 2008 and 2009. Spinosad 45 SC @ 0.1% was the most effective in reducing the pest incidence and realized the maximum yield of 84.78 q/ha followed by Bacillus thuringiensis @ 0.1%, Azadirachtin 50000 ppm @ 0.2%, Azadirachtin 10000 ppm @ 0.3%, Azadirachtin 1500 ppm @ 0.7%, Neem Seed Kernel extract @ 0.6% and 0.4% giving fruit yield of 72.55, 67.81, 60.40, 56.40, 52.22 and 50.0q/ha respectively. Highest percent fruit infestation (26.74%) and lowest yield (40.77 q/ha.)were recorded under untreated control. Based on the yield data and the cost of application of six spray of each insecticides the cost benefit ratio was 1 :1.80 in Azadirachtin 10000 ppm @ 0.3% followed by 1:1.23 in Bt. @ 2.0gm/lit.


Singh B.K.,National Horticultural Research and Development Foundation | Pandey J.G.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Biopesticides International | Year: 2013

Field experiments were carried out for two years during Rabi 2010-11 and 2011- 12 at National HorticulturalResearch and Development Foundation Nasik, Maharashtra to evaluate the IPM modules for the management of onion thrips Thrips tabaci L. (Thysanoptera: Thripidae). Three modules were designed as M1-IPM module, M2-farmer practices and M3- control plot. In each case four replicates were used. IPM module plot comprised of outer row of maize + inner row of wheat on all four sides in an area of 250 m2 (40 beds of 3.0 × 2.0 m.). The treatment was given to onion seedling using root dip in carbosulfan at 2.0 ml/L for 2 h before transplanting. Three interventions of sprays were followed. First spray was of neem oil at 3.0 ml/L + profenofos at 0.5ml/L; second spary was of carbosulfan at 1.0 ml/L + neem oil at 3.0 ml/L and methomyl at 240 g a.i/ha was used as the third spray. This protocol reduced thrips population by > 50% during the two years of investigation with highest marketable bulb yield of 350.4 q/ha, which was significantly superior to farmer practices and control plot.


Singh B.K.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Pestology | Year: 2011

Onion thrips {Thrips tabaci L.) is a serious pest of onion crop, which causes economical loss if crop is infested at early stage. The effective check for this pest has so far been mainly through the use of chemical insecticides but continuous use of recommended synthetic pyrithroid develop resistance in thrips which create serious problems for management of thrips. Avoid the problems of pest resistance and environment pollution a field experiment was conducted during Rabi 2006-07, 2007-08 and 2008-09 to compare the effectiveness of three different intercrops in reducing onion thrips damage on onion plant. The three intercrops were maize (Zia maize), tomato (Lycopercicon esculentum) and mustard (Brassica spp.). In both year maize was the least attractive intercrop for onion thrips and tomato was only slightly more attractive.


Singh R.K.,National Horticultural Research and Development Foundation | Bhonde S.R.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Journal of Applied Horticulture | Year: 2011

An investigation was carried out to study the genetic variability in late kharif germplasm of onion at Nashik, Maharashtra (India). The mean data indicated that the highest gross yield (41.17 t/ha) and marketable yield (39.13 t/ha) was recorded in line 744 and was at par with line 682 (39.07 t/ha) and (34.39 t/ha). A wide range of variability was observed for gross yield (19.65 to 41.17 t/ha), marketable yield (10.05 to 39.13 t/ha), bulb size index (20.40 to 35.90 cm 2), bolters (0.00 to 40.83%), doubles (0.00 to 47.50 %), thrips/plant (8.75 to 25.80) and plant height (54.95 to 71.80 cm). A higher magnitude of coefficient of variation was recorded for bolters (112.78 -112.65%), followed by doubles (86.35-86.16%), thrips/plant (37.55-37.36) and marketable yield (29.34 and 29.90 %). Highest heritability was noted in doubles, gross yield, bulb diameter, plant height, bolters and thrips/plant. The genetic advance as percent of mean ranged from 3.93 to 231.73. High genetic advance noted in bolters (231.73 %), doubles (177.12 %), thrips/plant (76.56%) and marketable yield (54.53%) and rest of others characters showed medium to low genetic advance. Gross yield, marketable yield, doubles, bolters, thrips/plant and bulb size index indicated higher estimates of genetic advance as percent of mean coupled with high heritability, suggesting the involvement of additive genetic variance for these traits. Marketable yield was significantly and positively correlated with plant height, neck thickness, bulb diameter, bulb size index, weight of 20 bulbs, and gross yield and negatively correlated with bolters, doubles and days for bulb initiation at genotypic and phenotypic levels. Plant height, leaves/plant, bulb diameter, bulb size index, weight of 20 bulbs and days for bulbs initiation. The study revealed that a wide range of variability for important characters exists in germplasm offering a good scope for developing improved onion varieties suitable for cultivation in Maharashtra.


Singh R.K.,National Horticultural Research and Development Foundation | Dubey B.K.,National Horticultural Research and Development Foundation | Bhonde S.R.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Indian Journal of Agricultural Sciences | Year: 2010

The extent of genetic variability, heritability, genetic advance and correlation were studied in onion with sixteen red onion advance lines. Results revealed that the advance lines '652', '574' and '672' performed better in terms of yield and yield contributing traits and these lines may be used for further breeding programmes. The highest phenotypic and genotypic coefficients of variation were noted for marketable yield (14.57-12.69%), followed by gross yield (11.42-9.78%) and days for bulb initiation (6.21-5.64%). The high heritability and high genetic advance were recorded in gross yield (73.26 and 17.26%) and marketable yield (75.90 and 22.80%), suggesting the major role of genetic constituents in the expression of the character. The gross yield had strong positive correlation with bulb diameter, bulb size index and bulb weight.


Gupta R.C.,National Horticultural Research and Development Foundation | Gupta R.P.,National Horticultural Research and Development Foundation
Indian Journal of Agricultural Sciences | Year: 2014

The experiment was conducted on epidemiological studies of Stemphylium vesicarium (Wallr.) Simmons causing stemphylium blight disease on onion (Allium cepa L.) variety Agrifound Light Red during rabi (winter) season, 2006-07, 2007-08 and 2008-09 at Research Farm, National Horticultural Research and Development Foundation, Nashik. Data of field studies revealed that stemphylium blight disease appeared during 5th standard week on onion crop under field conditions in consecutively three years in rabi season. The data shows a progressive increase and maximum percent disease index (PDI) of stemphylium blight was recorded in the 12th (24. 50%), 14th (12. 40% and 15th (13. 15%) standard weeks during rabi season, 2006-07, 2007-08 and 2008-09 respectively. The average temperature ranged from 16. 25°C to 22. 5°C and relative humidity varied in between 85% to 90% was prevailed during 4th and 5th standard week during all the three years. Disease infection rate (r) lowers at the initial stage but increased progressively under congenial weather conditions. The data under disease progress curve (AUDPC) showed towards the disease pressure being higher in the year, 2006-07 followed by 2008-09 and 2007-08. Stepwise multiple regression equation was drawn for the disease prediction based on the data recorded consecutively three years by taking the average of percent disease index (PDI). The four weather parameters, viz. maximum temperature, minimum temperature, maximum RH and minimum RH were contributed in stemphylium blight disease prediction with 95. 95 % precision during rabi season, 2006-07. Similarly, all the four weather parameters contributed for disease prediction with 75. 56% and 77. 33% precision during rabi season, 2007-08 and 2008-09 respectively. Thus the present findings can help for onion growers by alerting for prophylactic spray of fungicides to control the stemphylium blight and boost up the production.


Yadav S.P.,Organic Chemist | Gupta R.P.,National Horticultural Research and Development Foundation
Pestology | Year: 2013

The study was conducted at Research Farm, National Horticultural Research and Development Foundation, Nashik to evaluate the efficacy of commonly recommended pesticides against important foliar diseases of onion. Results revealed that significantly lowest incidence (30%) and intensity (5%) of stemphylium blight was recorded in sprays of mancozeb @ 0.25% at 15 days intervals and mancozeb @ 0.25% at 30 days intervals before harvesting. The highest disease incidence (40%) and intensity (9%) of stemphylium blight was recorded in untreated control. Further, it is evident from the data that significantly highest gross yield (340 q/ha) and marketable yield (326 q/ha) was also recorded in mancozeb @ 0.25% sprayed at 15 days interval. Thrips were effectively managed by systemic insecticides namely deltamethrin @ 0.1% and fipronil @ 0.15% spayed at 15 days intervals. Onion bulbs were analyzed for pesticide residue at our Pesticide Residue Laboratory accredited by NABL. The residue analysis report shows that no residues of all the three pesticides namely mancozeb, deltamethrin and fipronil were detected in onion bulbs received from all treatments after harvest.

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