Population dynamics of major nematode pests of selected annual crops [cowpea, tomato, mungbean, sweet corn, soybean, pole sitao, cucumber, sweet potato, cabbage, eggplant, bush sitao, pechay, peanut, okra, mustard] and the effect of the nematodes on crop yield

arachis hypogaea cabbages caupi chou pomme cowpeas crop losses cucumis sativus dynamique des populations filipinas haricot commun hibiscus esculentus ipomoea batatas kidney beans mung beans nematodos de las plantas philippines plant nematodes population dynamics rendement rendimiento repollo soja solanum melongena soybeans sweetcorn tomate tomatoes yields