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This study was conducted to investigated the effect of compost and rates of nitrogen (50, 70 and 90 units / fed) and phosphorus (30, 45 and 60 units/ fed) and their interaction on the growth and yield of green onions in Fayoum Governorate during the winter season. 2016/2017 and 2017/2018.The data showed that the addition of organic fertilizer resulted in a significant increase in all studied traits, whether vegetative growth, total green yield / fed and TSS Regarding to amounts of of N,P and K in the leaves. It noticed that, the interaction effect of compost with gradual rates N and P fertilizers resulted in significant gradual increases. It also explained that the increase of nitrogen rates led to a significant increase in all the studied traits except the TSS which decreased by increasing nitrogen. The results showed a significant increase in all the studied traits by increasing the phosphorus. The best result was organic fertilization with the lowest nitrogen and the highest phosphorus.It is clear from the study that organic fertilization with increased rate of nitrogen and phosphorus leads to increase the growth as well as the green yield of onions except TSS, which decrease the increase rate of nitrogen fertilization. As for the thrips population, the results showed no significant differences in the thrips population count for the individual effects of each factor of the study separately, but the results showed that there was a significant effect of the interaction between the studied factors

Beneficial Effects of Compost Manure, Nitrogen and Phosphorus Fertilizer on Green Onion Yield in Relation to Thrips Insects Population