Chicken manure as a biofertilizer for wheatin the sandy soils of Saudi Arabia

摘要: Abstract Two field experiments were carried out under centre-pivot irrigation in central Saudi Arabia during the winter seasons of 1990/91 and 1991/92 to examine yield quality responses wheat biofertilization with chicken manure at rates 0, 4·1, 8·25, 16·5 33·0 t ha−1. The response curves obtained for test measurements as a function rate applied indicated that grain yield, straw promoted by manure. point profitable (greatest economic return) corresponded manurial 8·25 ha−1 (maximum biodegradation). A simplified analysis data revealed operating beyond this is not advisable since it does appeal farmers may lead monetary losses. N P uptake, application rate, increased progressively an increasing rate. superiority second season over first one magnitude studied was variously attributed infection Fusarium graminearum, causing root crown rot disease higher amount mineralizable plant nutrients season.