| Abstrakt: |
TWO FIELD experiments were conducted during two successive growing winter seasonsin at a private farm at Abu El-Matamir (El-Beheira Governorate,Egypt). It was carried on wheat plant to study the effect of three types of composts prepared from three plant residues, i.e., maize (CMR), tomato (CTR) and vine (CVR). This study also included the chemical properties of sandy calcareous soil, i.e., pH, EC, OM, CEC, CaCO3 and available content of some macro- and micro-nutrients as well as its productivity of wheat yield and its components. These composts were analyzed for their chemical composition and content of available macro- and micronutrients. Each compost was added at rates of 0, 5, 10 and 20 ton fed-1. The prepared composts had wide variations in their chemical composition. For example, CTR had a highest content of organic matter, total nitrogen and available macro- and micronutrients, while the lowest values were found in CMR. Soil pH, EC and CaCO3 decreased as a result of compost applications, while soil CEC, OM and available macro- (N, P, K, S, Ca and Mg) and micronutrients (Fe, Mn, Zn and Cu) increased. The high relative changes of the determined soil chemical properties and its content of available nutrients were found in the soil treated with CTR followed by those resulted from CVR treatments. Increasing application rates of the used composts were associated with an increase of both straw and grain yields of wheat and their relative changes (%), where the highest yield was found with the treatment of CTR followed by that of CVR. Also, CTR gave the highest value of agronomical efficiency of wheat plants compared with the other two composts. Finally, the application of CTR (20 ton fed -1) was superior in greatly improving soil chemical properties of the studied soil and reflected on wheat productivity and nutrients uptake. [ABSTRACT FROM AUTHOR] |
