Ahmed, M. M. M. ; H.M.M. Seyam And M.M. Abbass( 2011). Comparative study of different organic manures and elemental sulfur for improving of some soil chemical properties and wheat productivity in sandy calcareous soilsEgypt . J. of Appl. Sci., 26 (12) 2011 480-493
Abstract: Two field experiments were conducted during two winter seasons of wheat plants 2008/09 and 2009/10 in a sandy calcareous soil at Arab El-Awammer Experimental Station (Assiut Governorate), to study the effect of organic manures and elemental sulfur which was added alone or combined with them, on some application, Soil chemical properties and wheat productivity. The treatments were five organic manures treatments i.e. untreated (control), farmyard manure (FYM), chicken manure (CM), compost (comp) and town wastes (TW), at a rate equivalent to 60 kg N fed-1 under two elemental sulfur treatments i.e. zero and 600 kg fed-1. The obtained results showed that values of soil pH after 30, 60 and 140 days from sowing were significantly reduced in the presence of different types organic manure and sulfur application the lowest values of soil pH were recorded in the presence of both (TW) and (FYM) treatments. Available P in the soil (average two years) after harvesting was significantly increased by 40.0, 40.9, 17.38 and 35.6 for % FYM, CM, Comp and TW over the control, respectively. FYM and CM application significantly raised values of soil EC in both seasons after 30 days from sowing compared with the control, EC values were decreased gradually after 60 and 140 days from sowing. Sulphur application at a rate of 600 kg fed-1 combiend organic manures especially (TW) at a rate equivalent to 60 Kg N K-1 had significant beneficial effects on some soil chemical properties as reducing soil pH values, increasing P availability as well as increasing wheat growth parameters , grain yield and N & P uptakes.
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