2. Institutional Publications

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Author: search.filters.author.Thomas Biju Mathew

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    Chemical control of thrips stenchaetothrips biformis Bagnall using synthetic pyrethroids in rice nursery
    (Kerala Agricultural University, 1988) Reghunath, P; Premila, K S; Thomas Biju Mathew; Nandakumar, C
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    Optimum spray volume requirements for rice at different stages of growth
    (Kerala Agricultural University, 1984) Thomas Biju Mathew; Mohan Das, N; Visalakshi, A
    Field experiments were conducted for two seasons in 1980-'81 at the College of Agriculture, Vellayani for assessing the optimum volumes of insecticide suspension required for treating rice crop at different growth stages of the crop using a pneumatic knapsack sprayer and mist blower. The results showed that the optimum volumesof 0.2",, carbaryl suspension required to give highest deposits on leaves were 200, 300, 500 and 500 I/ha in the case of a pneumatic knapsack sprayer and 90, 1 20, 1 80 and 1 80 I/ha in the case of a mist blower at 30, 45, 60 and 75 days after sowing respectively. The optimum volumes thus obtained were correlated with the leaf area indices of the respective stages of growth and relevant statistical models were fitted for both the type of sprayers.
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    Degradation of mancozeb residues in pepper and the effect of processing on the removal of residues
    (Kerala Agricultural University, 1997) Naseema Beevi, S; Thomas Biju Mathew; Visalakshi, A; Nalina Kumari, T
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    Dissipation of endosulfan in cowpea
    (Kerala Agricultural University, 1997) Naseema Beevi, S; Thomas Biju Mathew; Visalakshi, A
    In an experiment to study the dissipation of endosulfan in cowpea pods following application @ 0.07 and 0.14 per cent at flowering and paid formation stage, the residues dissipated below detectable level on 15th day in the lower dose while 0.3 mg kg'1 could be detected in the higher dose. A waiting period of 2.85 and 5.21 days are fixed for the lower and higher dose respectively. Washing of green pods removed 39.78% of the initial deposit while washing followed by cooking removed up to 67.93% in the lower dose.
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    Dissipation ok quinalphos and monocrotophos residues in cardamom Capsules
    (Kerala Agricultural University, 1998) Thomas Biju Mathew; Visalakshi, A; Naseema Beevi, S; Rajan Asari, P A; Rajagopal, B
    The paper describes the results of a field experiment conducted in the Cardamom Research Station, Pampadumpara, to study the dissipation of two insecticides used for controlling cardamom thrips and to fix their waiting periods. The results showed that the residues of quinalphos reached below the tolerance limit of 0.25 ppm within 23 to 24 days in fresh cardamom and within 20 to 21 days in cured cardamom. The corresponding periods for monocrotophos did not differ between fresh and cured cardamom (22 to 23 days) because of the systemic nature of the residues.
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    Dissipation of lindane residues in cowpea
    (Kerala Agricultural University, 1999) Naseema Beevi, S; Thomas Biju Mathew; Sudhanna, K; Nalinakumari