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Borkar, S. L.
- Efficacy of Botanicals and Bio-Pesticides on Population Dynamics of Bollworm Complex and their Safety to the Predators in Non-bt Cotton
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PDF Views:132
Authors
S. L. Borkar
1,
S. V. Sarode
1
Affiliations
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444 104, Maharashtra, IN
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444 104, Maharashtra, IN
Source
Journal of Biological Control, Vol 26, No 2 (2012), Pagination: 71-78Abstract
A field investigation was carried out to assess the population fluctuation of bollworm complex and their natural enemies on non-Bt cotton. Twenty treatments including four botanicals were evaluated initially against sucking pests and continued further for check against bollworm complex with scheduling HaNPV, Bt and spinosad. The minimium egg and larval population of Helicoverpa armigera was reported in the application of NSE 5% and Azadirachtin 1500 ppm followed by spinosad 45 and HaNPV 250 LE/ha. However, the application of NSE 5% and Azadirachtin 1500 ppm followed by spinosad 45 SC was better in reducing larval population of Easias vitella. The treatment schedules comprising four botanicals followed by spinosad 45 SC as well as Bt 1000 g/ha have been found effective in reducing the larval population of pink bollworm in green bolls. The sole treatments of botanicals and the applications of botanicals followed by HaNPV 250 LE/ha have been observed to be safer to adults of coccinellids beetles, Chrysoperla zastrowi sillemi eggs and larvae as well as spiders.Keywords
Cotton, Bollworm Complex and Natural Enemies.Full Text
References
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- Sarode SV, Patil PP, Borkar SL. 1995. Evaluation of neem seed kernel extract in combination with Heliothis nuclear polyhedrosis virus against cotton bollworm. J Ent Res. 19(3): 219–222.
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- Parasitization of Helicoverpa armigera (Hubner) on Pigeonpea
Abstract Views :165 |
PDF Views:103
Authors
Affiliations
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, IN
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, IN
Source
Journal of Biological Control, Vol 22, No 2 (2008), Pagination: 455-461Abstract
The parasitization of Helicoverpa arinigera (Hubner) larvae and pupae was studied during 2004-05 and 2005-06 from field collected life stages on pigeonpea. The ichneumonid, Eriborus argenteopilosus was found to be the most effective and active parasitoid of early instar larvae from 45th Meteorological week (MW) till 51st MW and recorded the highest parasitization in 46th MW (25.00 per cent). The other ichneumonid, Campletis chlorideae was observed to be active in December (16.67 per cent). Parasitism by a Braconid, Bracon sp., noticed from 45th to 47th MW and 50th MW, was up to an extent of 7.89 per cent. On pigeonpea, these parasitoids contributed to approximately two-third of the total mortality of early instar H. armigera larvae. Tachinid parasitoids were found to be associated with the late larval instar and pupae. The parasitization of late larval instars was noticed from 47th MW to 52nd MW and the population reduction was estimated to be 17.86 per cent, which was highest in 48th MW. Similarly, HaNPV disease infection also played an important role in population suppression of early and late instar larvae to an extent of 7.69 and 3.57 per cent, respectively. Pupal mortality by a tachinid was noticed from 46th MW to 52nd MW in the range of 8.33 to 26.32 per cent.Keywords
Bracon spp., Campoletis chtorideae, Eriborus argenteopilosus, Helicoverpa armigera, Pigeonpea, Parasitoids.Full Text
- Effect of Ethylene Absorbent and Different Packaging Materials on Storage Life of Banana
Abstract Views :249 |
PDF Views:0
Authors
Affiliations
1 Post Harvest Technology Scheme, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M.S.), IN
1 Post Harvest Technology Scheme, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M.S.), IN
Source
Asian Journal of Bio Science, Vol 3, No 2 (2008), Pagination: 233-236Abstract
The experiment was conducted to assess the shelf life of unripe banana with ethylene absorbent stored in different packaging materials viz., HDPE, polyethylene and polypropylene (non-perforated) bags of different gauges. Significantly minimum weight loss, spoilage, TSS and Pulp/peel ratio recorded by fruits stored in 250 gauged non-perforated HDPE bags followed by 175 gauges non –perforated HDPE bags with ethylene absorbent at all the sampling dates. However, highest acidity was recorded at all the storage period due to the same packaging materials. The spoilage was recorded on 15 days of storage to the tune of 2.15% and 1.054%, respectively by fruits stored in 175-gauged HDPE bags and 250-gauged HDPE bags. The control fruits were spoiled on 9th day.Keywords
Ethylene Absorbent, TSS, Cumulative Weight Loss, Pulp/Peel Ratio, Titratable Acidity.
- Effect of Different Treatments and Packaging Materials on Biochemical Changes During Storage of Kagzi Lime
Abstract Views :206 |
PDF Views:0
Authors
Affiliations
1 Post Harvest Technology Scheme, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M.S.), IN
1 Post Harvest Technology Scheme, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M.S.), IN