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Studies on mass production of beauveria bassiana (Bals.) vuill., its efficacy and compatibility wit some new generation insecticides against pigeonpea pod borer

KrishiKosh

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Title Studies on mass production of beauveria bassiana (Bals.) vuill., its efficacy and compatibility wit some new generation insecticides against pigeonpea pod borer
 
Creator Tank, Narendra
 
Contributor Saxena, A.K.
 
Subject grain, bugs, animal developmental stages, planting, pigeonpeas, fungi, rice, beauveria bassiana, productivity, insecticides
ENTOMOLOGY
 
Description ABSTRACT

Present research work on “Studies on mass production of Beauveria bassiana (Bals.) Vuill., its efficacy and compatibility with some new generation insecticides against pigeonpea pod borer complex” was carried out in the experimental field of Department of Entomology, Live Stock Farm, Adhartal, JNKVV, Jabalpur (M.P.) during kharif 2014-15. The experiments were conducted with the following objectives:
1. To study the influence of temperature and nutrient on mass production of

Beauveria bassiana on local substrates.

2. To study the bioefficacy and compatibility of B.bassiana with new generation insecticides against pigeonpea pod borer complex.
3. To study the population dynamics of pigeonpea pod infesting insect pest complex.

Broken wheat grains were found to be the best substrate for mass production of B. bassiana as it produced maximum spore production in minimum time followed by broken rice, but in case of viability of spore broken rice grains was recorded maximum viable spores, highest biomass production was recorded on broken wheat grains media and highest dry matter production was recorded on water soaked rice and substrate with nutrient for mass production of B. bassiana as it produced maximum spore, viable spore,
biomass and dry matter production and best temperature was found at 300C.

All the chemical insecticides and biopesticides proved their superiority over control in reducing the pod and grain damage and increasing the grain yield.

On the basis of the effectiveness of different treatments against pod borer complex on grain damage and grain yield revealed that among chemicals rynaxypyr 20%SC and in case of pod fly triazophos
40%EC is effective treatments.

Insecticide B.b + emamectin benzoate maximum cost benefit ratio (1:9.60).


Invitro studies in compatibility of B. bassiana with chemicals show that rynaxypyr 20%SC was most compatible with least growth inhibition percentage.
The first group insects to appear on the crop were pod bug, gram pod borer, pod fly, green stink bug and red gram plume moth respectively. These appeared when the crop age was reproductive stage and remained available upto the maturity of the crop. These pests were the major key pests which caused colossal yield losses.

Green stink bug :

Green stink bug was first observed in the 40th SW. Minimum temperature, evening relative humidity, morning and evening vapour pressure exhibited negative effect on green stink bug (nymph + adult) population.

Pod bug :

Pod bug (nymph + adult) was first observed in the 40th SW. Maximum and minimum temperature and morning and evening vapour pressure showed negative effect on nymph and adult population.

Gram pod borer :

Gram pod borer larva was first observed in the 45th SW. Maximum temperature showed positive and morning relative humidity showed negative effect on pod borer larvae population

Tur plume moth ;

Plume moth larva and pupa was first observed in the 45th SW. All the abiotic factors (included in the study) did not exhibit any impact on plume moth larval population.

Pod fly :

Pod fly population was first observed in the 45th SW. All the abiotic factors (included in the study) did not exhibit any significant influence on pod fly maggot population.
 
Date 2016-06-22T11:44:59Z
2016-06-22T11:44:59Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67672
 
Language en
 
Format application/pdf
 
Publisher JNKVV