EVALUATION OF VARIOUS MODULES AGAINST MAJOR PESTS OF OKRA.
dc.contributor.advisor | Thakare, Dr. A. Y. | |
dc.contributor.author | MOHOD, VANDANA DEVANAND. | |
dc.date.accessioned | 2020-05-05T08:43:58Z | |
dc.date.available | 2020-05-05T08:43:58Z | |
dc.date.issued | 2019-12-03 | |
dc.description | A field experiment was conducted during Summer and kharif season of 2014-15 and 2015-16 at the Chilli and Vegetable Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS.). An experiment was laid in randomized block design consisting of eight modules. Neem cake @ 250 kg/ha was applied as soil application. Seed treatment with imidacloprid 48 FS @ 9 ml / kg seed. Yellow sticky trap (size 15cm x 30cm) erected in okra crop @ one / plot along crop canopy and 15 cm height above the crop canopy as per treatment 15 days after emergence of the crop. | en_US |
dc.description.abstract | A field experiment entitled “Evaluation of various modules against major pests of okra: Field and simulation study” was conducted during Summer and kharif season of 2014-15 and 2015-16 at the Chilli and Vegetable Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS.).An experiment was laid in randomized block design consisting of eight modules viz., M1 (fully organic), M2, M3 and M4 (Chemical module with sequential use of insecticides), M5, M6 and M7 (IPM based module having ST, Soil application, YST and sequential use of chemical insecticides) and untreated module M8 to find out effective modules against major pests and its effect on natural enemies and also to study the abundance of major pests and predators during both the seasons and incidence of YMV in various modules and their economics. The results revealed that Module M6 and M4 were found most effective in reducing the population of leafhopper, whitefly, mites, shoot and fruit borer and incidence of yellow vein mosaic and in obtaining higher yield of okra fruits. However module M7 was significantly superior for arresting the population of aphids. The population of thrips was significantly reduced in module M6 and M5. All modules were found equal in maintaining predator population on summer and kharif season on okra indicating safety to natural enemies. Peak incidence of sucking pests (aphid, leafhopper, whitefly, thrips and mites) fruit borer and predators (LBB, Chrysoperla and Spider) was observed on okra from 9th April to 20th May (15-20th MW) and 2nd Sept to 7th Oct. (35- 40th MW) during summer 2014-15 and kharif season 2015-16, respectively. The module M6 followed by M4 and M5 were found significantly most effective in recording minimum incidence of YMV transmitted by whitefly at 60 to 95 DAS. The module M2 was found to be the least effective and at par with M7 and M3 in recording the minimum incidence of YMV. The module M4 followed by M2 and M6 were proved most economical by registering higher ICBR and NMR. However highest first rank NMR and third higher rank of ICBR recorded in module M6 which is twice more NMR than in module M2. Hence out of all module tested in present investigation module M6 was found IPM based most effective and economical against all major pests and YMV disease of okra. Maximum incidence of YMV (i.e. 10.90% and 22.22% ) was observed during 14th to 20th May (20th MW) and 1st to 22th Oct (40-43rd MW ) preceding the incidence of whitefly ( i.e. 5.71-6.86 and 6.54 to 6.88 whitefly/leaf ) during 18-19th MW and 37-38th MW in summer and kharif season. Yellow Sticky Trap at 15 cm height above the crop canopy was found most suitable for trapping maximum number of adults sucking pests (aphid, leafhopper, thrips and whitefly) during both summer and kharif seasons. Amongst the different chemicals tested in laboratory against leafhopperA.biguttulla biguttula., the treatment with thiamethoxam 25 WG @ 0.2g/Lproved most effective in recording highest (1649.94) persistence toxicity followed by cypermethrin 25 EC @ 0.4ml (933.26), dimethoate 30EC @ 2ml/L (833.28) and lambda cyhalothrin 5 EC @1ml/L (633.28) PT values, respectively. Overall among various modules module M6 (ST, SA, YST, Cyper, Tria, Feno, Ace+Spir) was found significantly most effective and economical followed by module M5 (SA, YST, Thia, Fenpo, Lamb, Tria+Dico) and M4 (Tria, Fenv, Qin+Spir, Fenpo, Lamb ) in minimizing the all sucking pests, shoot and fruit borer infestation, yellow vein mosaic diseases and in obtaining the highest ICBR and net monitoring return. | en_US |
dc.identifier.citation | MOHOD VANDANA DEVANAND. (2019).Evaluation of various modules against major pests of okra. Department of Agriculture Entomology, Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph.D. 2019 Print. xx,399p.(Unpublished). | en_US |
dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810145904 | |
dc.keywords | Crop, Field crop, Okra, Abelmoschus. esculentus L., Modules pests okra, Soil application, Seed treatment, Yellow Sticky Trap, Sucking pests, Shoot and Fruit borer, Yellow Vein Mosaic, Along crop canopy, Above crop canopy, Population, Maximum incidence, Meteorological Week, weather parameter, Rainfall, Relative humidity, Phytotoxicity, Temperature, Correlation, Okra fruit yield,Insecticides, | en_US |
dc.language.iso | en | en_US |
dc.pages | xx,399p. | en_US |
dc.publisher | Dr.PanjabraoDeshmukhKrishiVidyapeeth,Akola, Maharashtra. | en_US |
dc.research.problem | The present investigation the researcher has tried to find out effective module against major pests and its effect on natural enemies of okra. Also tried to comparative study on abundance of major pests of okra in summer and kharif season also to study the incidence of Yellow Vein Mosaic of okra in various modules and to study the economics of various modules. | en_US |
dc.sub | Agricultural Entomology | en_US |
dc.theme | The present research deals with the sticky material which plays an important role in controlling/ monitoring adult stage of sucking pest and early detection of seedling pests in the field which is not possible even with newer any group of insecticides. Yellow colour sticky trap are used for monitoring / controlling the pests like aphids, thrips, white fly, Sticky traps being mechanical means of control are an important part of an integrated pest management programme. Investigations were carried out in order to find out suitable, effective, ecofriendly and economical plant protection measures against major sucking pests of Okra. | en_US |
dc.these.type | Ph.D | en_US |
dc.title | EVALUATION OF VARIOUS MODULES AGAINST MAJOR PESTS OF OKRA. | en_US |
dc.type | Thesis | en_US |