The effect of organic fertilize level, extract and drip discharge on the availability of nutrient and properties of Cucurbita pepo L

Abstract

A field experiment was carried out in a clay soil in the district of Daquq, south of Kirkuk province, to study the effect of the level of organic fertilization and emitters discharge in some properties of the soil and the growth and holds pumpkin squash. The Organic fertilizers were added with four different amounts 0, 10, 15 and 20 ton per hectares, Organic Fertilization extract with two different levels 0, 20 gm per Liter, the irrigation was supplied by using drip Irrigation System. Water was supplied with two Discharge levels 3.93 and 7.86 Lh-1.Some of the chemical properties of soil such us of N, P, and K have been calculated. Number of foots and yield have been measured as a properties of the plant and the efficiency of water use have been calculated. The results showed an increase of the concentration of N, P, and K that available within the soil at 20 ton h-1 of fertilization level, which is 23.50, 108.70, and 203.7 respectively. The concentration of N, P, and K increase in the plant, which is 2.64, 0.39, 2.32% respectively. The 20 gm per liter has a significant of N, P, and K concentration in the soil with an average of 94.55, 19.80. 170.62 mg kg-1 respectively. Similarly, this concentration has an increase of N, P, and K concentration in the plant, which record 1.97, 0.41 and 2.11%. The result have showed that the best growth of the number of fruit and a total yield ,which is 8.87 fruit per plant and 25.11 ton h-1 respectively, at 20 ton h-1 fertilization level and 20 gm per liter extract concentration. In addition, at this result, combined with best water use efficiency that is 10.60 kg per meter