تأثير التسميد الأزوتي على نمو و إثمار نباتات الباباي

الملخص EN

A field experiment was conducted at the farm of Nasser faculty of Agriculture science, Aden University, during 1996 / 199 to determine the effect on nitrogen fertilization on the plant growth and fruit yield of papaya.

Six different levels of fertilizer were used (0,10,20,30,40,50 gr.

N/m2) at a rate of 0,42,84,126,168,210 kg/acre, Honey dew var.

Of papaya was planted at 2 X 2m plant spacing.

The experiment was taken place at a plant with 8.1 acidity rate, 0.59% organic material and total rate of o.036% nitrogen.

A randomized complete block design with four replications was used with 36 plant / treatment.

Results obtained, revealed: 1- The green growth of papaya plant was not affected.

2- An evident of a clear response on fruit growth, especially fruit weight per plant, acre average yield, and fruit average weight, but fruit numbers were not affected.

3- The best treatment was the third one (20 gr.

N / m2) which gave 28Kg/tree in the first season and 29.07 Kg/tree in the second season, a rate of 29.4 tone / acre for the first season and 30.5 tone / acre for the second season.