IMPACT OF FIVE PLANT EXTRACTS ALONE AND IN COMBINATION WITH OXAMYL ON Rotylenchulus reniformis INFECTING TOMATO.

The effect of root dip-treatment with aqueous leaf extracts of pomegranate.
Punica granatum; olive, Olea euroba; castor. Ricinus communis; Mango, Manfjfera
indica and peach. Prunus persica either alone or integrated with Oxamyl were carried
out under greenhouse conditions to compare their effectiveness against R. raniformis
infecting tomato CN. Strain-B3 as well as plant growth response. Results illustrated
that most treatments proved to be more effective in improving tomato plant growth to
certain extent, exceeded that of nematode alone (2.63). R. communis Integrated with
Oxamyl treatment proved to be the best in promoting the fresh weight of the whole
plant followed by R. communis alone, P. granatum + Oxamyl and then M. indica plus
Oxamyl treatment. Their percentages of increase were 63.56 %. 63.14 %, 55.08 %
and 54.66 %, respectively. All treatments showed significant reduction in total number
of reniform nematode in soil and roots of tomato with rate of nematode build-up
ranged from 0.180 for Oxamyl to 0.256 for P. persica. Egg-masses numbers of R.
reniformis on tomato plant were significantly reduced in all treatments as compared
with nematode alone.