Soil Test Calibration in West Asia and North Africa: Proceedings of the Second Regional Workshop
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Citation
Abdallah Matar, P. N. Soltanpour, Amy Chouinard. (31/12/1987). Soil Test Calibration in West Asia and North Africa: Proceedings of the Second Regional Workshop. Beirut, Lebanon.
Abstract
A recent regional workshop on soil test calibration brought together 27 participants representing 12 countries to discuss the results of research based on a common experiment design. The research of the network was initiated because fertilizer Is being applied almost universally In the region but little is known about nutrients available in the soil. The changes in nutrient status brought about by residual fertilizer. or the levels of nutrients that are needed to produce economically optimal yields of the crops. For instance, in several of the countries participating in the network, the Olsen test is used routinely to determine the amount of available P in the soil. but the utility of the information has been limited because researchers have been uncertain what levels of P were needed by the crops.
The meeting was held in Ankara. Turkey. 1-6 September, was the second in a series; the first. which took place at ICARDA in June 1986. established the guidelines for joint experiments and formed a network of participating countries to investigate the fertilization of rainfed crops. The goal of the network is to determine the nitrogen and phosphorus requirements of crops grown on soils in West Asia and North Africa.
