scholarly journals Bio-efficacy of Different Insecticides Against Thrips (Scirtothrips dorsalis Hood) in Green Gram

2018 ◽  
Vol 6 (3) ◽  
pp. 365-371
Author(s):  
Surbhi Kansagara ◽  
Kalpit D. Shah ◽  
Atul R. Rathod ◽  
Mitesh K. Ghelani ◽  
Mahesh F. Acharya
Keyword(s):  
Seed Yield ◽  
Field Condition ◽  
Seed Treatment ◽  
Yield Loss ◽  
Foliar Application ◽  
Maximum Yield ◽  
Green Gram ◽  
Research Station ◽  
Spray Application ◽  
Scirtothrips Dorsalis

Investigation on the management of thrips, Scirtothrips dorsalis Hood infesting green gram was carried out under field condition during 2017 at Pulse Research Station, Junagadh Agricultural University, Junagadh, India. For the management of thrips, different combinations of seed treatments viz., imidacloprid 30.5 SC @ 0.12%, clothianidin 50 WDG @ 0.20% and thiamethoxam 25 WG @ 0.01% and foliar application of insecticides profenophos 40% + cypermethrin 4% 44 EC @ 0.044%, spinosad 45 SC @ 0.0135% and flonicamid 50 WG @ 0.015% were evaluated against the pest. Based on pooled over periods, seed treatment of thiamethoxam 25 WG @ 0.10% and insecticidal spray of spinosad 45 SC @ 0.0135% was found most effective for the control of thrips.The highest (1066 kg /ha) seed yield was gained from the plots treated with thiamethoxam 25 WG @ 0.10% + spinosad 45 SC @ 0.0135% followed by imidacloprid 30.5 SC @ 0.12% + spinosad 45 SC @ 0.0135% (1025). Maximum yield loss can be avoided with spray application of thiamethoxam 25 WG @ 0.10% + spinosad 45 SC @ 0.0135% (90.64%) followed by imidacloprid 30.5 SC @ 0.12% + spinosad 45 SC @ 0.0135%(83.16%) as compared to control.

scholarly journals Quantification of Avoidable Yield Losses in Oilseed Brassica Caused by Insect Pests

2011 ◽  
Vol 51 (1) ◽  
pp. 38-43 ◽  
Author(s):  
Jagdev Kular ◽  
Sarwan Kumar
Keyword(s):  
Seed Yield ◽  
Yield Loss ◽  
Insect Pests ◽  
Block Design ◽  
Maximum Yield ◽  
The Other ◽  
Yield Losses ◽  
Eruca Sativa ◽  
Mustard Aphid ◽  
Randomized Block Design

Quantification of Avoidable Yield Losses in OilseedBrassicaCaused by Insect PestsA six year field study was conducted from 2001-2002 to 2006-2007 at Punjab Agricultural University, Ludhiana, India to study the losses in seed yield of differentBrassicaspecies (B. juncea, B. napus, B. carinata, B. rapaandEruca sativa) by the infestation of insect pests. The experiment was conducted in two different sets viz. protected/sprayed and unprotected, in a randomized block design, with three replications. Data on the infestation of insect pests, and seed yield were recorded at weekly intervals and at harvest, respectively. The loss in seed yield, due to mustard aphid and cabbage caterpillar, varied from 6.5 to 26.4 per cent.E. sativasuffered the least loss in seed yield and harboured the minimum population of mustard aphid (2.1 aphids/plant) and cabbage caterpillar (2.4 larvae/plant). On the other hand,B. carinatawas highly susceptible to the cabbage caterpillar (26.2 larvae/plant) and suffered the maximum yield loss (26.4%).

Impact of Cobalt Application Methods on Chickpea Yield, Nutrient Uptake and Status of Soil

2019 ◽  
Author(s):  
Santosh Onte ◽  
Nitin N Gudadhe ◽  
Nilima Karmakar ◽  
Raju G. Ladumor
Keyword(s):  
Seed Yield ◽  
Seed Treatment ◽  
Foliar Application ◽  
Block Design ◽  
Cobalt Content ◽  
Seed Priming ◽  
Nutrient Content ◽  
Soil Application ◽  
Application Methods ◽  
The Impact

A field experiment was conducted during rabi season of 2015-2016 at Navsari Agricultural University, Navsari to study the impact of cobalt application methods on chickpea yield, nutrient content and soil status. Four cobalt application methods with three levels of each were evaluated with one absolute control and one with seed priming of water were evaluated with randomized block design with three replications. Least level of seed treatment, soil application and foliar application of cobalt gave highest chickpea seed yield and decreased there after. As cobalt levels increased, NPK content and uptake are decreased linearly in all the methods except seed priming method, however cobalt content and uptake increased linearly by seed treatment and foliar application, on the contrary it decreased linearly by seed priming and soil application of cobalt. Soil application of cobalt at 50 g ha-1 recorded highest chickpea seed yield, residual NPK and Co and which can be useful for succeeding crop and this can be recommended from the cobalt nutrition point of view in plants and animals followed by seed priming at 1 ppm.

Evaluation of Tactics for Management of Sugarcane Aphid (Hemiptera: Aphididae) in Grain Sorghum

2019 ◽  
Vol 112 (6) ◽  
pp. 2719-2730 ◽  
Author(s):  
Phillip J Haar ◽  
G David Buntin ◽  
Alana Jacobson ◽  
Adrian Pekarcik ◽  
M O Way ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Yield Loss ◽  
Foliar Application ◽  
Integrated Approach ◽  
Grain Sorghum ◽  
Planting Date ◽  
Resistant Variety ◽  
Melanaphis Sacchari ◽  
Sugarcane Aphid ◽  
Plant Injury

Abstract The invasive sugarcane aphid, Melanaphis sacchari (Zehntner), is a devastating new pest of grain sorghum. Studies were conducted utilizing an integrated approach of four management tactics: planting date, insecticidal seed treatment, a foliar-applied insecticide, and plant resistance. Experiments were conducted in 2016 and 2017 at Griffin, Tifton, and Plains Georgia, and in 2016 in Texas, Alabama, and Oklahoma, United States. Early planting was effective in reducing damage and increasing yields when compared to the late planting. Use of a resistant variety reduced cumulative aphid-days, plant injury and usually prevented significant yield loss. Foliar application of flupyradifurone when aphids reached an economic threshold, was an effective management tactic preventing aphid injury and yield loss. Use of clothianidin seed treatment also reduced aphid injury and yield loss of the susceptible hybrid but generally did not prevent injury and yield loss of the resistant hybrid. We conclude that an earlier planting date coupled with a resistant variety and judicious use of an efficacious foliar-applied insecticide can effectively manage sugarcane aphid on grain sorghum. An insecticide seed treatment also may be useful to reduce the risk of sugarcane aphid damage to seedlings of susceptible hybrids.

Identification of Suitable Cobalt Application Method and Optimum Level for Enhancing of Chickpea Yield

2019 ◽  
Author(s):  
Santosh Onte ◽  
Nitin N Gudadhe ◽  
Raju G Ladumor ◽  
Nilima Karmakar ◽  
Magan Singh
Keyword(s):  
Seed Yield ◽  
Seed Treatment ◽  
Foliar Application ◽  
Block Design ◽  
Seed Priming ◽  
Growth And Yield ◽  
Optimum Level ◽  
Soil Application ◽  
Application Method ◽  
Randomized Block Design

A field experiment was conducted during rabi season of 2015-2016 at Navsari Agricultural University, Navsari to identify suitable cobalt application method and optimum level for enhancing chickpea yield. There were four cobalt application methods and three levels of cobalt each i.e. seed priming at 0.5, 1.0 and 1.5 ppm, seed treatment at 1, 2 and 3 g kg-1 seed, soil application at 50, 100 and 150 g ha-1, foliar application at 0.01, 0.025 and 0.05% and one control with water priming and one without seed treatment were evaluated in randomized block design with three replications. In general least level of all methods has recorded highest growth and yield of chickpea. As cobalt levels increased, growth and yield of chickpea was decreased linearly in all methods. Soil application of 50 g CoCl2 ha-1 produced highest seed yield hence this treatment can be recommended for higher seed yield and can be useful for succeeding crop.

Influence of Common Ragweed (Ambrosia artemisiifolia) Time of Emergence and Density on White Bean (Phaseolus vulgaris)

Weed Science ◽  
1995 ◽  
Vol 43 (3) ◽  
pp. 375-380 ◽  
Author(s):  
David Chikoye ◽  
Stephan F. Weise ◽  
Clarence J. Swanton
Keyword(s):  
Seed Yield ◽  
Yield Loss ◽  
Maximum Yield ◽  
Ambrosia Artemisiifolia ◽  
Parameter Estimates ◽  
Large White ◽  
Area Index ◽  
Common Ragweed ◽  
Weed Density ◽  
White Bean

Common ragweed is a major problem in white bean production systems in Ontario. The influence of time of emergence and density of common ragweed on white bean growth and seed yield was examined in Ontario at Elora in 1990, and at Woodstock and Staffa in 1991 and 1992. Ragweed emerged with white bean seedlings (VE) and at the second trifoliate stage of white bean (V3). Time of ragweed emergence and weed density affected white bean yield at all locations. When 1.5 ragweed seedlings m−1of row emerged at the VE stage of crop growth 10 to 22% seed yield loss occurred. Yield losses of 4 to 9% occurred when 1.5 ragweed seedlings m−1of row emerged at the V3 crop stage. Yield loss parameter estimates, i.e., the predicted weed-free crop yield (YWF) and the maximum yield loss (A), varied among locations and with time of ragweed emergence, whereas the parameter for yield loss at low weed density (I) was more consistent across all locations and times of weed emergence. Although I values were relatively consistent across locations and times of ragweed emergence, the standard errors associated with each estimate were large. White bean leaf area index, above-ground biomass and pod number m−2were affected most by ragweed interference. White bean density, number of seeds per pod, and seed weight per plant were not affected by ragweed interference. Ragweed emerging at VE and V3 produced a maximum of 6000 and 1000 seeds m−2, respectively. Time of ragweed emergence may be more important than weed density when evaluating weed control options.

Effect of temperature, seeding date, fungicide seed treatment and inoculation with Fusarium avenaceum on seedling survival, root rot severity and yield of lentil

2000 ◽  
Vol 80 (4) ◽  
pp. 899-907 ◽  
Author(s):  
S. F. Hwang ◽  
B. D. Gossen ◽  
G. D. Turnbull ◽  
K. F. Chang ◽  
R. J. Howard ◽  
...  
Keyword(s):  
Seed Yield ◽  
Root Rot ◽  
Seed Treatment ◽  
Seedling Survival ◽  
Maximum Yield ◽  
Fusarium Avenaceum ◽  
Effect Of Temperature ◽  
Seeding Date ◽  
Wide Range ◽  
The Impact

Early seeding of lentil is necessary on the northern prairies to ensure that the crop has time to mature. However, planting into cold soils in spring results in slow germination, which may predispose seedlings to infection by soil-borne pathogens. In a controlled-environment study of the impact of temperature on infection of lentil seedlings (cv. Eston) byFusarium avenaceum, root rot symptoms were most severe at warm temperatures (20° to 27.5 °C) and declined in warmer or cooler soils. Field plots were seeded on three dates, which were spaced about 2 wk apart between early May and early June in four station years. Seedling emergence was most consistent and seed yield was highest in three of four sites at the second seeding date. Emergence and yield were substantially lower for the latest seeding date. Inoculation with F. avenaceum reduced establishment and seed yield. Seed treatment with Crown (thiabendazole and carbathiin) improved seedling survival, reduced root rot severity and increased seed yield relative to the inoculated control. Vitaflo-280 (thiram and carbathiin) also improved establishment and yield, but the effect was not as strong or consistent. Treatment with Raxil (tebuconazole) and Apron (metalaxyl) had no effect. The pathogenicity of aggressive isolates of F. avenaceum from lentil on a range of crop species was evaluated. All crops were susceptible to some degree, which indicates that the pathogen, once established, is likely to persist in a field for some time. This study demonstrated that early planting was required for maximum yield, that certain isolates of F. avenaceum were pathogenic on a wide range of hosts, and that seed treatment can be used to minimize losses from seedling blight and root rot in lentil. Key words: Lentil (Lens culinaris Medikus), Fusarium avenaceum, root rot, seeding date, thiabendazole, carbathiin, thiram, tebuconazole

scholarly journals Effect of Foliar Application of Urea on Growth and Yield of Short Durative Lentil Variety (BARI Masur-9)

2020 ◽  
Vol 2 (2) ◽  
pp. p49
Author(s):  
Md. Shahriar Kobir ◽  
Md. Harun-Or-Rashid ◽  
Md. Hafijur Rahman
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Agricultural Research ◽  
Foliar Application ◽  
Growth And Yield ◽  
Yield Potential ◽  
Cost Ratio ◽  
Research Station ◽  
Benefit Cost Ratio ◽  
Initiation Stage

An experiment was conducted at Regional Agricultural Research Station, Jashore, Bangladesh during rabi season of (2019-2020) to evaluate the effect of foliar application of urea on growth and yield of short durative lentil variety (BARI Masur-9). The experiment was conducted in split plot design with three replications where time of urea spraying, P1= at branching stage, P2= at pod initiation stage were distributed in main plots and doses of urea spraying T1= application of 100% recommended fertilizers as basal except urea, T2= application of 100% recommended fertilizers as basal, T3= application of 75% of urea with 100% of other fertilizers as basal and rest of the 25% of urea by spraying, T4= application of 25% of urea with 100% of other fertilizers as basal and rest of the 75% of urea by spraying, T5= application of 50% of urea with 100% of other fertilizers as basal and rest of the 50% of urea by spraying were distributed in sub plots. The highest plant height, number of pods per plant were obtained from application of 75% of urea with 100% of other fertilizers as basal and rest of the 25% of urea spraying at pod initiation stage. The highest seed yield was also found from application of 75% of urea with 100% of other fertilizers as basal and rest of the 25% of urea spraying at pod initiation stage followed by application of 100% recommended fertilizers as basal and application of 50% of urea with 100% of other fertilizers as basal and rest of the 50% of urea by spraying at branching stage. Plant height, pods per plant and days to maturity showed positive correlation with seed yield. On the other hand days to flower and plants per m2 has no linear relationship with seed yield. The highest marginal benefit cost ratio (3.29) was recorded from application of 75% of urea with 100% of other fertilizers as basal and rest of the 25% of urea by spraying at pod initiation stage. So based on findings to increase the yield potential of BARI Masur-9 foliar application of urea may be a tool and hence application of 75% of urea with 100% of other fertilizers as basal and rest of the 25% of urea by spraying at pod initiation stage may be consider as the best treatment.

Performance of cluster bean cultivars under the application of variousagrochemicals in Sub - Humid area of Rajasthan

2016 ◽  
Vol 39 (6) ◽  
Author(s):  
V. K. Meena ◽  
M. K. Kaushik ◽  
Magan Singh ◽  
Rakesh Kumar ◽  
Rajesh Kumar Meena ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seed Treatment ◽  
Foliar Application ◽  
Growth Substance ◽  
Test Weight ◽  
Yield Attributes ◽  
Control Seed ◽  
Net Returns ◽  
Main Plot ◽  
Plot Design

A field experiment was conducted during the kharif season 2008 and 2009 to find out response of clusterbean to various growth regulators. The experiment was laid out under spit plot design where four varieties (RGC-936, RGC-1002, RGC-1003 AND RGC- 1017 are taken as main plot treatment and seven growth substance (control, seed treatment with thiourea 500 ppm, foliar application of thiourea 500 ppm, seed+foliar application of thiourea 500 ppm, seed treatment with TGA 100ppm, foliar application of TGA 100 ppm and seed+foliar application of TGA 100ppm) as sub plot treatment and with three replications. Application of seed + foliar application with thiourea 500ppm on yield attributes viz., pods plant-1, seeds pod-1 , weight of seeds pod-1, test weight, seed yield plant-1 showed significant increase i.e. 24.88g, 6.97g, 0.187g, 26.82g, 5.04g on pooled basis. The results revealed that the variety RGC-936 gave significantly higher number of pods per plant (24.85.00), seeds per pod (6.67), weight of seed per pod (0.179 g), test weight (26.09 g), and seed yield per plant (4.67 g). Seed+foliar application of thiourea 500ppm recorded significant improvement in yield and yield attributes on the pooled basis. The maximum net returns (Rs.2873/-) and B:C ratio (3.82) were recorded with the variety RGC-936.

Influence of seed treatment and foliar nutrition of molybdenum on green gram and black gram

1987 ◽  
Vol 108 (3) ◽  
pp. 627-634 ◽  
Author(s):  
M. Syed Anwarulla ◽  
K. Shivashankar
Keyword(s):  
Seed Treatment ◽  
Field Experiments ◽  
Foliar Application ◽  
Sodium Molybdate ◽  
Dry Weight ◽  
Green Gram ◽  
Growth And Yield ◽  
Black Gram ◽  
Foliar Nutrition ◽  
Area Index

SummaryIn two separate field experiments with green gram (Vigna radiata L. Wilczek) and black gram (Vigna mungo L. Wilczek), the effect of seed treatment of molybdenum at 4, 8 and 12 g of sodium molybdate/kg seeds as well as foliar nutrition of sodium molybdate at 0·4, 0·8 and 1·2 kg/ha was evaluated on the nodulation characteristics and leghaemoglobin content of nodules and growth and yield of crops. Both seed treatment and foliar application of sodium molybdate were found to be superior to controls in respect of the number of nodules per plant and dry weight of nodules. The leghaemoglobin content of nodules in both crops was maximal in the treatments with the highest dose of seed treatment followed by the highest dose of molybdenum for foliar sprays. Molybdenum favourably influenced the growth of green gram and black gram by increasing the number of branches and leaves and by nearly doubling the leaf area index. This resulted in increased D.M. and yield of pods.

scholarly journals RESPONSE OF CHINA ASTER (CALLISTEPHUS CHINENSIS L.) GENOTYPES TOWARDS FOLIAR APPLICATION OF GA3

2021 ◽  
pp. 1-15
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Foliar Application ◽  
Research Station ◽  
Cut Flowers ◽  
Commercial Cultivation ◽  
Flower Diameter ◽  
Adequate Quantity ◽  
China Aster ◽  
Day By Day

China Aster is one of the most popular flower that are used in ornamental garden. The demand for cut flowers of China aster is increasing day by day, but it has not been possible to supply the adequate amount of flowers especially during the festival season. The area under flower production is increasing year after year but farmers are not getting quality seeds in adequate quantity as very few farmers are taking up seed production because flower seeds loose their viability earlier than crop seeds. So, production of adequate quantity of quality seeds is essential to meet the demand. The present investigation was undertaken in Horticulture Research Station, Mondouri, B.C.K.V., Mohanpur, Nadia, West Bengal during Rabi season of 2018-19 and 2019-20. Over two consecutive years, six genotypes were evaluated the potentiality of for its growth and flowering, as well as to estimate the influence of GA3 through foliar application at pre-flowering stage on its seed production. In field three treatments were considered viz. T1 (control i.e.no application of GA3), T2 (GA3@50ppm), T3 (GA3@100ppm). According to the size of flowers, highest was recorded in Local Mix (G6). So, it could be considered as the best performer genotype considering flower diameter. Seed yield plant-1 was recorded highest in Local White (G5), it could be considered as the best performer genotype considering its higher number of flowers plant-1 and number of seeds flower-1. GA3 (100 ppm) could be utilized in a better way for greater enhancement in all those important parameters as overall influence of GA3 has been found to improve seed yield plant-1 and all the important attributes. Concomitant consideration of seed yield and its important attributes may indicate to recommend foliar application of 100 ppm GA3 for enhancement in seed yield in all the genotypes. Similar to the seed yield and its attributes, plant growth and development have been noticed to be positively influenced by GA3 concentrations with a higher side after 100 ppm, may lead to recommend foliar application of 100 ppm GA3 for commercial cultivation of this crop irrespective of the genotypes.

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