تأثير الأسمدة الكيميائية والعضوية على إنتاجية محصول القمح في المناطق الجافة

Abstract

A pot experiment was conducted at Saudi Arabia during season 2005/2006 and 2006/2007 to investigate the effect of organic and inorganic fertilizer on some soil properties and yield at wheat (Triticum aestirum L.) plant ev. Yecora rojo.
The plants were sown in six different treatments organic fertilizer dosage used was (10ton/ha) cattle manure chemical fertilizer dosage used was (150kg/ha) -potassium sulphate. The different treatment used as follows: 1- control 2- Urea 46% N 3-Potassium sulphate 4- Cattle manure 5-50% cattle manure + 50% Potassium sulphate. 6-50% cattle manure + 50% urea.
The treatments were arranged in complete randomized block design with four replications the growth parameters measured. reproductive attributes investigated were spike high, number of spikelets per spike. weight of seeds per spike, 100-seed weight and seeds yield per unit area. Some soil properties also measured, more over up take of nitrogen and phosphorus were determined.
The results appeared that componation of organic and chemical fertilizer was significant on yield and yield components on other hand it had non significant on 100-seed weigh at 1" season. st
The study indicated that the organic application had significant effect on some physical and chemical soil properties on the other hand the study also indicated that the organic application was attained in arid soil under conditions in Saudi Arabia to increase yield of wheat and to improve soil properties compared with chemical application.