<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Physic nut (Jatropha curcas) oil as a protectant against field insect pests of cowpea in Sudano-Sahelian cropping systems"^^ . "Cowpea is a profitable food and fodder crop in the\r\nSudano-Sahelian region of Africa. Unfortunately, it is\r\nextensively damaged in the field by a range of insect\r\npests. The use of locally available insecticidal plant\r\nextracts is a promising alternative to chemical crop\r\nprotection, which is the most popular management\r\nstrategy but shows many drawbacks. In this respect, oil\r\nextracted from seed of the physic nut shrub (Jatropha\r\ncurcas) showed promise. The insecticidal properties of J.\r\ncurcas oil were thus assessed against cowpea insect pests\r\nat the ICRISAT research station, Sadoré, Niger. In 2002,\r\nfour concentrations of physic nut oil extract, formulated\r\nas an emulsifiable concentrate (EC) (namely 2.5%, 5%,\r\n7.5% and 10%), were evaluated as field sprays along with\r\nan untreated control (water spraying) and a conventional\r\ninsecticide (Deltamethrin Decis® EC) treatment. In\r\n2009, these latter two checks were evaluated alongside\r\nfour concentrations of a “blank” formulation consisting\r\nof only the adjuvants of the 2002 EC formulation (namely\r\n1.25%, 2.5%, 3.75% and 5%). In 2002, application of\r\nDeltamethrin and physic nut oil at 7.5% gave the highest\r\nseed yields, with more than 1000 kg ha-1. Both treatments,\r\nalongside the one with 10% oil, sustained significantly\r\nlower thrips (Megalurothrips sjostedti) infestation than\r\nthe water-sprayed control. All oil extract treatments and\r\nthe Deltamethrin treatment sustained significantly lower\r\ninfestation by Clavigralla tomentosicollis bugs than the\r\nuntreated control, with the lowest infestation occurring\r\nwith 7.5% oil. Furthermore, correlations between oil\r\nconcentration and thrips and bug infestation were\r\nnegative and significant, while correlation between oil\r\nconcentration and seed yield was not significant, due to a\r\nphytotoxic effect of oil at high concentrations. The\r\nfollow-up studies in 2009 confirmed that effects of\r\nJatropha oil on cowpea insect infestation and seed yield\r\nobserved in 2002 could be ascribed to the physic nut oil\r\nfraction alone."^^ . "2011" . . "9" . . "International Crops Research Institute for the Semi-Arid Tropics "^^ . . . "Journal of SAT Agricultural Research"^^ . . . "09733094" . . . . . . . . . . . . . . . . . . . . . . . . . "A"^^ . "Doumma"^^ . "A Doumma"^^ . . "D"^^ . "Pasternak"^^ . "D Pasternak"^^ . . "H I"^^ . "Katoune"^^ . "H I Katoune"^^ . . "H"^^ . "Salha"^^ . "H Salha"^^ . . "D M"^^ . "Lafia"^^ . "D M Lafia"^^ . . "A"^^ . "Ratnadass"^^ . "A Ratnadass"^^ . . "A Y"^^ . "Drame"^^ . "A Y Drame"^^ . . . . . . "Physic nut (Jatropha curcas) oil as a protectant against field insect pests of cowpea in Sudano-Sahelian cropping systems (PDF)"^^ . . . . . . . . . . . "Physic_nut_Jatropha_curcas_oil_as_a_protectant_against.pdf.pdf"^^ . . . "Physic nut (Jatropha curcas) oil as a protectant against field insect pests of cowpea in Sudano-Sahelian cropping systems (Image (JPEG))"^^ . . . . . . "preview.jpg"^^ . . . "Physic nut (Jatropha curcas) oil as a protectant against field insect pests of cowpea in Sudano-Sahelian cropping systems (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #4715 \n\nPhysic nut (Jatropha curcas) oil as a protectant against field insect pests of cowpea in Sudano-Sahelian cropping systems\n\n" . "text/html" . . . "Agriculture-Farming, Production, Technology, Economics"@en . . . "Entomology"@en . . . "Jatropha"@en . .