Record Details

SURVEY FOR THE INCIDENCE OF STORED GRAIN PESTS AND STUDIES ON THE RELATIVE RESISTANCE OF MALATHION AGAINST Sitophilus oryzae IN MAIZE

KrishiKosh

View Archive Info
 
 
Field Value
 
Title SURVEY FOR THE INCIDENCE OF STORED GRAIN PESTS AND STUDIES ON THE RELATIVE RESISTANCE OF MALATHION AGAINST Sitophilus oryzae IN MAIZE
 
Creator SREENIVASA REDDY, D
 
Contributor LOKA REDDY, K
 
Subject SURVEY, INCIDENCE, STORED, GRAIN, PESTS, STUDIES,, RELATIVE, RESISTANCE, MALATHION, AGAINST
 
Description The present investigation on “Survey for the incidence of stored grain pests of maize
and relative resistance of malathion against Sitophilus oryzae was conducted during
2007-08.
Survey studies conducted during April and July, 2008 revealed the presence
of 5 species of stored pests in maize viz, Sitophilus oryzae, Tribolium castaneum,
Sitotroga cerealella, Trogoderma granarium and Corcyra cephalonica and S.oryzae
was found to be the most dominant species in all the districts. The S.oryzae
population, infestation of maize grains by storage pests and the moisture content of
the grains were more in the maize samples surveyed during July month than
surveyed during April month. Among the three districts. Medak district samples
recorded more S.oryzae population and infestation compared to Nizamabad samples.
The correlation and regression analysis revealed that morning and evening
relative humidities showed highly significant and positive influence on S.oryzae
population while it was negative and significant with maximum temperature.
Minimum temperature did not play any significant influence on pest population and
infestation. Multiple regression analysis explained the total variation in S.oryzae
population and storage pest infestation of April, 2008 to an extent of 93 % and 92 %,
respectively with weather parameters, while the S. oryzae population and pest
infestation observed during July month were less influenced by weather.
Insecticide resistance studies conducted with the laboratory culture collected
from 4 places viz., Karimnagar, Medak, Nizamabad and Hyderabad showed that
Karimnagar culture was relatively more susceptible to malathion. The order of
toxicity based on LC50 values was Nizamabad > Medak > Hyderabad > Karimnagar.
There was slight change in the LC90 values and the order of toxicity at LC90 was
Medak > Karimnagar > Nizamabad > Hyderabad.
 
Date 2016-08-17T13:36:57Z
2016-08-17T13:36:57Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72745
 
Language en
 
Relation D8623;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD