Browsing by Author "Singh, S.P."
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Item Changes in fat components and fatty acid compositions of autoxidized groundnut oils(2007-02-08) Mayilvaganan, M.; Singh, S.P.Item Coconut based high density cropping system in Goa(Indian Coconut Journal, 2002-11) Singh, S.P.; Manjunath, B.L.; Hameed Khan, H.; Bhanu ShaliniItem Effects of autoxidized groundnut oils on activities of digestive enzymes - lipase and pepsin(2007-02-08) Mayilvaganan, M.; Singh, S.P.Item Integrated nutrient management of coconut-based farming system for sustained productivity(2004) Singh, S.P.; Manjunath, B.L.; Hameed Khan, H.; Bhanu ShaliniAmong the horticultural crops, coconut stands second in area after cashew in the state of Goa. A field experiment on integrated nutrient management of coconut-based farming system was conducted between 1999-2002 at ICAR Research Complex for Goa in Old Goa. Three manurial treatments viz; T, (100% organics), T, (50% organics+50% inorganics) and T, (100% inorganics were imposed in both coconut and hybrid napier forage grasses NB-21 and PBN-16 intercropped in coconut garden for three year. The results revealed that yield of forage grass NB-21 was same both in treatment T, (127 t/ha) and T, (126.97 t/ha), the difference being non-significant. However, the highest yield of PBN-16 (106 t/ha/year) was recorded in treatment T2 followed by T, (104.9 t/ha/year), the differences being non-significant. Yield of coconut in NB-21 grass plot increased from 42 nutslpalml year (1998-99) to 67 nutslpalmlyear (2001-2002) whereas in PBN-16 grass plot it was from 80 nutslpalmlyear to 78 nutslpalml year for the period although the differences were non-significant. Soil feyility status of plots receiving only organic manures depicted nearly the same pH over three years while plots receiving inorgariic fertilizers showed a lower pH. There was slight increase in the organic carbon content in the manure applied plots especially in coconut basins. Nitrogen content at a depth of 30-60 cm in the coconut basins was found to be high in the plots receiving only inorganic fertilizers. However, the results obtained were non-significant.Item Natural enemy complex of coconut leaf eating caterpillar, Opisina arenosella Walker (Lepidoptera: Xylorictidae) in Karnataka(2007-02) Sujatha, A.; Singh, S.P.Surveys in coastal and interior Karnataka during 1996 and 1997 revealed the occurrence of four larval, one larval-pupal and thirteen pupal parasitoids and eleven predators of Opisina arenosella Walker. Eight hyperparasitoids were also recorded.Item Parasitisation behaviour of Leptomastix dactylopii Howard (Hymenoptera: Encyrtidae) at various densities of Planococcus citri Risso(2000) Jalali, S.K.; Singh, S.P.; Biswas, S.R.The response of the encyrtid parasitoid, Leptomastix dactylopii Howard, to various densities of its host mealybug, Planococcus citri Risso, was investigated in the laboratory. Per cent parasitisation decreased, and adult parasitoid emergence increased, with the increase in host density. Development of immature stages did not differ among different density levels. Per cent female progeny was greater at lower densities. A positive correlation between density and the number of adults emerged, and a negative correlation between density and parasitisation was observed. A parasitoid: host ratio of 1: 100 was optimum for parasitoid use and mass production of L dactylopii.Item Seasonal incidence of braconid parasitoids of Opisina arenosella Walker (Lepidoptera: Oecophoridae) in South interior Karnataka(2002-07) Sujatha, A.; Singh, S.P.Item Trapping a major tactic of BIPM strategy of palm weevils(2005) Singh, S.P.; Rethinam, P.Item Virulence of native entomopathogenic nematodes against black cutworms, Agrotis ipsilon (Hufnagel) and A. segtetum (Noctuidae: Lepidoptera)(2000) Hussaini, S.S.; Shakeela, V.; Parthasarathy, R.; Singh, S.P.