Influence of fresh chopped leaves and dry leaf powder of some horticultural trees on controlling root-knot nematode, meloidogyne javanica on broad bean

الملخص EN

Fresh chopped and dry leaf powders of china berry(Melia azedarachta), golden chain (Cassia fistula), luciana (Lucaena Leucocephala), poinciana (Poinciana regia) and purple orchid (Bauhinia Variegata) was applied as soil amendments at rates of 5, 10, 15 and 20 g / kg soil to control the root-knot nematode, Meloidogyne javanica infecting broad bean cv.

Maser-1 under greenhouse conditions.

Result revealed that all powder or chopped amendments suppressed population of nematode and fewer root galls per plant were formed special at the highest rates of amendments.

All treatments significantly (P ≤ 0.05) decreased nematode criteria when compared to untreated (check).

In general, there was a positive correlation between the tested rates and the percentages reduction in nematode parameters higher rates of chopped or dry leaves were caused higher percentage nematode reduction, when compared the whole averages of materials with each other in controlling nematode parameters.

Also, almost the treatments of dry leaf powder amendments succeeded in improving the plant growth than unamended soil as evidence in increment of lengths and fresh weights of both shoots and roots.

Also, the increase in such parameters of plant growth clear differences according to the type and the amount of materials used.