PNABD246.pdf

lackgram, cowpea, sorghum and pearl millet had caused considerable impact on
the succession and incidence of insect pests of red gram. This was evidenced by
the findings that the appearance of almost all the major pests had been delayed
except the flower and pod damaging insects, which although appeared
simultaneously in mono- and intercrops of red gram, their initial incidence was
much lower in the latter cases. For example, by intercropping of mungbean the
appearance of green jassid, leaftier, membracid, bug and Nezara was delayed by
two, eight, two and two weeks, respectively. Maximum reduction from 33 to 75%
in incidence of jassid took place when red gram was intercropped with pearl
millet. Intercropping of pulses brought down the incidence by 8 to 33%.
Intercropping with blackgram, cowpea and pearl millet resulted in greater
reduction in the incidence of bug in comparison to other intercrops. No
consistent picture emerged by intercropping )n the incidence of leaftier. Its
incidence declined with sorghum and pearl qillet intercropping. There was
dramatic reduction in the incidence of membracid by intercropping which ranged
from 36 to 100%. Considerable reduction in the incidence of green stink bug was
observed by the intercropping of red gram with sorghum and pearl millet
intercropping. There was considerable reduction in the incidence of flower
eating beetle by intercropping except with cowpea. Pulse intercrops showed
reduction in the incidence of podborer upto 56%. [AS/PLHJ
*0642 Surulivelu, T. ; Chelliah, S. ; Balasubramanian, G. 1978. Evaluation
of granular insecticides and seed treatment formulations for the control of
insect pests of blackgram. MADRAS AGRICULTURAL JOURNAL, v.65(10):693-694.
[En] (A:PS)
A field experiment was conducted to evaluate the efficacy of certain
granular insecticides and seed treatment formulations for the control of
beanfly (Ophiomyia phaseoli Tryon), leafhoppers (Empoasca kerr Pruthi) and
whitefly (Bemisia tabaci). The treatments were soil application of disulfoton,
aldicarb and phorate granules at 1 kg a.i./ha along with seed treatments of
carbofuran 2 g and 4 g a.i./100 g seed and untreated check. The results
indicated that all the insecticidal treatments were effective to control the
pest insects and increased the grain yield. However, aldicarb and carbofuran 4
g treated plots recorded the lowest populations of beanfly, leafhopper and
whitefly. Carbofuran 2 g and aldicarb treatments recorded 433 and 425 kg/ha
seed yield, respectively, while the untreated check yielded only 131 kg/ha.
[THHJ
*0643 Jamornmarn, S. ; Sinchaisri, N. 1979. The role of pest management on
mungbean in multiple cropping system. IN: Mungbean in cropping system in
Central Thailand. Bangkok : Kasetsart University. p.52-63 (Kasetsart
University, Faculty of Agriculture, Technical Bull. no.1) (SB205.M8K3)
Three pest insects were found on mungbean at Bangpae, Thailand. They are
bean thrips (Taeniothrips longistylus Karny), flea beetle (Longitasus
manilensis Weise) and an unidentified red spider mite. A program of insect pest
management system was set up and would be extended to the farmers. [THH]
*0644 Pawar, V.M. ; Chavan, K.M. 1979. Effect of systemic insecticides on
germination and seedling development in green gram (Vigna aureus Hepper).
INDIAN JOURNAL OF ENTOMOLOGY, v.41:405-408. [En] (REP.MB-2861)
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