Abstract - Rubber Seed Oil for Partial Substitution of Mineral Oil Used as Carrier for Copper Fungicide in the Management of Abnormal Leaf Fall Disease of Rubber


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Rubber Seed Oil for Partial Substitution of Mineral Oil Used as Carrier for Copper Fungicide in the Management of Abnormal Leaf Fall Disease of Rubber C.K. Jacob, P. Srinivas, E.E. Prem, M.J. Manju, S.K. Mushrif and S.P. Idicula Rubber seed oil (RSO) was evaluated for its potential use in oil-based spray formulations against abnormal leaf fall disease of rubber (Hevea brasiliensis) which could influence the economics of disease management. A mixture of RSO and mineral spray oil (SO) in a proportion of 1:2 was assessed as a carrier for the fungicide copper oxychloride (COC), in comparison with SO alone. The scope for reducing the dosage of COC, when RSO and SO were mixed (1:2 proportion) for spraying against abnormal leaf fall disease, was investigated in field trials in two endemic locations over six years. Results indicated that the use of RSO for partial substitution of SO was promising and resulted in similar disease control as provided by the use of SO. Lower dosage (6 kg/ha) of COC was found to be comparable to the recommended dosage of COC (8 kg/ha) when RSO + SO was used as carrier. RSO had no phytotoxic effect on the rubber leaves either alone or in combination with spray oil. Reduction in cost was evident when a combination of partial complementation with RSO and a reduced dosage of COC was applied. back
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