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The Indian livestock population is huge. Most (99%) of the livestock owners still follow traditional animal husbandry practices and graze their livestock, especially small ruminants, on natural pastures where no pesticides are used. In order to feed the everincreasing livestock population, efforts are being made to increase quality fodder productivity from limited land resources. In such situations, pesticides play an important role by minimizing the loss of green fodder due to disease and pest attack. In countries such as Canada, Israel, the UK, and other European countries, pesticides have been registered for forage crops; in India, however, although pesticides have been registered for cultivable grain, horticultural and cash crops, etc., there are no registration guidelines or authenticated information regarding pesticide use with regard to forage crops. Hence, there is a need to take necessary steps in this direction, keeping in view the importance of fodder and livestock in the country. In this review, detailed aspects of the status and use of pesticides in forage crops in India are discussed.

Abstract:Many Trichoderma isolates are known to secrete several secondary metabolites with different biological activities towards plants and other microbes. The production of such compounds varies according to the strain. In the present study, volatile secondary metabolites from the culture filtrate of Trichoderma asperellum strain were characterized using Gas chromatography-Mass spectrometry (GC-MS). Results of GC-MS detected 43 secondary metabolites in the T. asperellum strain including many important volatile secondary metabolites such as 1,2-Benzenedicarboxylic acid, 2-butoxy-2-oxoethyl butyl ester (peak area-3.59%), 1,2-Benzenedicarboxylic acid dibutyl ester (peak area-2.02 %), 2H-Pyran-2-one (peak area-66.63 %), palmitic acid (peak area-2.86 %), several phenolic isomers, methyl cyclohexane etc., all reportedly having effective pesticidal activity. The results indicated that these secondary metabolites could be useful for biological control applications of T. asperellum strain against diverse plant pathogens.

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