Author: M.M. JISKANI, S.M. NIZAMANI, K.H. WAGAN, A.N. MUGHERI, J.A. MEMON AND S.H. SOOMRO
Publishing Date: 2005
Volume 23 Issue 1
Different doses of neem oil, neem-seed decoction and neem leaf extract were tested to see their effect on the reproductive activity of Meloidogyne incognita on tomato. Growth of tomato plants significantly increased with all doses of neem oil followed by neem-seed decoction and neem leaf extract. The number of root-galls per plant, egg masses per root system, and eggs per egg-mass also significantly decreased with neem oil as compared to neem-seed decoction and neem leaf extract. The hatching inhibition rate of egg-masses was increased with neem oil followed by neem seed-decoction and neem leaf extract as compared to distilled water treatment. Neem oil significantly increased the mortality rate of second stage larvae/juveniles after 1 day and 5 days exposure than that of neem seed-decoction, neem leaf extract and in distilled water treatment (control). The rate of hatching and mortality of juveniles was highly correlated with the dose of neem products and also neem exposure.