SIGNIFICANCE OF NO- AND CONVENTIONAL TILLAGE IN COMBINATION WITH SOME LOCAL NATURAL AMENDMENTS AS RELATED TO SOIL PHYSICO-CHEMICAL PROPERTIES AND WHEAT PRODUCTIVTY IRRIGATED WITH LOW QAULITY WATER | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 10, Volume 25, Issue 1, January 2011, Page 136-146 PDF (415.36 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2011.195482 | ||||
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| Author | ||||
| Mohamed Abdel Warth Mahmoud | ||||
| Soils, Water and Environ. Res. Institute, Agric. Res. Center, Giza, Egypt | ||||
| Abstract | ||||
| A field experiment was conducted at Tamaya district, El-Fayoum Governorate, Egypt during two successive to seasons of 2008-2009/2009- 2010 to evaluate the effect of either no- or conventional tillage practices as solely treatments or applied mineral N and P fertilizers alone or conjunction with some local natural amendments, i.e., gypsum, farmyard manure and filter mud for ameliorating some soil properties, i.e., organic matter content, pH, infiltration rate and moisture retention as well as grain yield of wheat (Triticum aestivum L., Sakha 69 cv.) plants as a next crop after rice (Oryza sativa L., Giza 176 cv.) and irrigated with a low quality of irrigation water. The obtained results showed that in case of no-tillage, the rice plant residues of 10 cm height were left, and in turn caused an increase in each of soil organic matter content and infiltration rate vs a parallel decrease in soil pH value. The corresponding increase of soil organic matter content at the end of experiment reached 0.519 %, as a mean value for no-tillage vs 0.455 % in case of the conventional tillage in soil depth of 0-15 cm. Such pronounced increase in soil organic matter content positively reflected on wheat grain yield. Moreover, the grain yield was maximized with increasing the applied doses of N and P fertilizers. These increases achieved an usefulness at no-tillage practice as compared to the conventional one during the first season of 2008-2009, while an opposite trend was occurred at the next season of 2009-2010. Practically, 32.44 cm irrigation water was used per year in case of notillage practice vs 39.66 cm in case of the conventional one, with superiority for no-tillage that could be saved 7.22 cm of irrigation water. Finally, the results emphasized the necessity of using 120 kg N + 25 kg P2O5/ha as fertilizer doses with farmyard manure or filter mud or gypsum under notillage practice for improving soil organic matter content and sustaining wheat-rice cropping sequence under the prevailing conditions of using low quality of irrigation water. | ||||
| Keywords | ||||
| Soil organic matter; infiltration rate; soil pH; no-tillage; conventional tillage; rice-wheat cropping sequence; low quality water | ||||
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