2. Institutional Publications
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Item Population fluctuations of aphid pests of Chromolaena Odorata (Eupatorium Odoratum) in Kerala(Kerala Agricultural University, 1985) Lyla, K R; Joy, P J; Abraham, C CIn studies on the population fluctuations of the aphidpesfsof Chromolaena odorata Linn, in the plains and medium hilly localities of Trichur district (Kerala State), it was found that Aphis spiraecola Patch and Aphis fabae Scopoli occurred at peak levels in July in both situations, the diversity of occurrence per unit area being also higher in July. Brachycaudus helichrysi KItb. occurred at higher elevations of the Idukki, Wynad districts causing complete damage to the plants. Nymphs and adults of A. spiraecola and A. fabae fed on tender leaves and shoots causing severe leaf crinkling. Consequent on feeding by B. helichrysi the leaves became rolled and the entire plants showed wilting symptoms. As candidates for the bio-control of C. odorata in Kerala, these aphids do not appear to be quite promising.Item New record of Leptoglossus Australis (Fabr) as a pest of Bittergourd in Kerala(Kerala Agricultural University, 1986) Lyla, K R; Joy, P J; Peter, K VItem Insect pests of Chromolaena odorata (Eupatorium odoratum)(Kerala Agricultural University, 1987) Lyla, K R; Joy, P J; Abraham, C CItem Establishment of Pareuchaetes Pseudoinsulata Rego barros (Ammalo insulata walk.), an arctiid caterpillar, for the biological control of chromolaena odorata(Kerala Agricultural University, 1987) Satheesan, N V; Lyla, K R; Joy, P J; Joseph, DItem Comparative performance of blackgram varieties in Chalakudy command area(Kerala Agricultural University, 1984) Reena Grittle Pinhero; Baby Latha, A K; Lyla, K R; Thomas, A IItem Comparative performance of cowpea varieties in rice fallows(Kerala Agricultural University, 1984) Babylatha, A K; Reena Grittle Pinhero; Lyla, K R; Thomas, A IThe performance of eight varieties of cowpea under irrigated conditions in the Malampuzha Command area was studied in the summer season of three consecutive years. Ptb 1, HG 22, Pusa 2 and C 152 were found to be superior varieties for cultivation under irrigated conditions during summer season in rice fallows.Item Establishment of cyrtobagous salviniae sands (Curculionidae:Coleopjera) on salvinia molesta mitcheil in Kerala(Kerala Agricultural University, 1984) Joy, P J; Satheesan, N V; Lyla, K R; Joseph, DItem Lily caterpillar polytela gloriosae fab.(Noctuidae : Lepidoptera), a serious pest of gloriosa superba L.(Kerala Agricultural University, 1992) Lyla, K R; Reghunath, B R; Viswanathan, T VItem Hairy caterpillar euchromia polymena Linn.- A serious pest of Tylophora Indica (Burm.F.) Merr. and Ipomoea Mauritiana Jacq.(Kerala Agricultural University, 1992) Lyla, K R; Reghunath, B R; Joy, P JItem Hirsutella Thompson II var. Synnematosa Samson, Mccoy & O'donnell on coconut mite aceria (Eriophyes) guerreronis (Keifer) - a new report from India(Kerala Agricultural University, 1999) Pathummal Beevi, S; Beena, S; Sukumara Varma, A; Lyla, K R; Maicykutty P Mathew; Nadarajan, L