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Articles by Barkat Hussain
Total Records ( 5 ) for Barkat Hussain
  Barkat Hussain and Sheikh Bilal
  The use of marigold as a trap crop for the management of tomato fruit borer in tomato was evaluated. The proportion of larvae counted on trap row increased with increasing rate and on main crop decreased with decreasing rate at 65 and 80 days after transplanting. All the treatment combinations recorded lowest fruit damage, larval population on tomato but trapped higher larvae on marigold. Moreover, 3:1 combination observed (81.0-88.89%) larval reduction than sole crop and was significantly better than other treatments.
  Rizwana Khursheed , Barkat Hussain , S.B. Ahmad and M. Ashraf
  Different developmental stages of Coccinella septumpunctata was observed that the egg, larval, pre-pupal and adult stages occupied more duration in first generation as compared to second, total larval period 16±1.73 days and pupal period, 7.5±0.87 days was more in first generation in contrast to second 13.5±0.87 days and 6.5±0.87 days, respectively. However, similar was the trend with respect to longevity of males and females.Adult stage of Coccinella septumpunctata consumed more aphids in both generations as compared to larval. Nevertheless, when a comparison was made, between larval instars, it was observed that older larvae consume more number of aphids/day than younger ones.
  M.S. Ansari , Barkat Hussain and N.A. Qazi
  The natural appearance of mustard aphid on Brassica germplasm was observed on 11th January (60 DAS) and disappeared after 2nd March (110 DAS). The peak aphid population was found at a maximum, minimum and average temperature of 23.37°, 6.87° and 15.76°C, respectively and mean relative humidity of 54.75% on 10th February at 90 DAS. Then, decline in aphid population and simultaneously increase of Coccinella was at 100 and 110 DAS, respectively. Maximum and average temperature showed as positively non-significant effect while minimum temperature caused negatively non-significant on the population of aphid. However, relative humidity had a negative effect. Late appearance of Coccinella too could not have any regulatory effect on the incidence of this pest.
  Barkat Hussain and Sheikh Bilal Ahmad
  Cereal leaf beetle (Oulema melanopus) was recorded from Kashmir, which is one of the states of Indian Union during a survey conducted in rabi 2003-04 to know the pest complex on oat crop. Both the adults and larvae damage plants by chewing out long strips of tissues between the veins of leaves leaving only a thin membrane. When damage is extensive the leaves turn whitish and the plants takes on the appearance of frost damage. The plant may be killed or the crop may be seriously reduced.
  N.A. Munshi , Barkat Hussain , G.N. Malik , Musavir Yousuf and N. Fatima
  Fusarium pallidoroseum isolated locally from cadaver of Lymantria obfuscata was evaluated as bio-control agent against caterpillars of same pest at concentrations of 1x1010, 1x109, 1x108, 1x107, 1x106, 1x105, 1x104, 1x103, 1x102 and 1x101 spores mL-1. No mortality was observed up to 3rd day of inoculation. 1x1010 spores mL-1 was the most promising concentration as it inflicted an initial mortality of 43% on the 4th day and cent percent mortality on the 9th day. The LC50 values ranged from 1.969x103 (16th day) to 1.256x1011 (4th day). A linear positive association was observed between mortality and days of observation.
 
 
 
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