EFFECT OF WATER REGIME, NITROGEN LEVEL AND ZINC APPLICATION ON MAIZE YIELD AND ITS WATER RELATIONS | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 3, Volume 29, Issue 3, March 2004, Pages 1563-1572 PDF (149.57 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2004.240845 | ||
| Author | ||
| M.A. Ghazy | ||
| Soil, Water and Environment Research Institute, ARC, Egypt. | ||
| Abstract | ||
| A field experiments was carried out at Sakha Agric. Res. Sta. Farm during two successive summer seasons (2002 and 2003) to study the effects of water regime, nitrogen fertilizer levels and zinc application on maize yield and its water relations as well as some soil chemical properties. Split-split plot design with four replicates was used, where 4 water regime treatments (40%, 55%, 70% and 85% depletion of available soil moisture) were occupied the main plots. Nitrogen fertilizer with three levels (90, 110 and 130 kg N red' ) were placed in the sub-plots and three zinc treatments (150 ppm zinc-EDTA chelate as a foliar spray application, 10 kg fed' Zn- sulfate as soil application and without zinc applied) were allocated to sub-sub-plots. The main results could be summarized as follows: - There was a significant effect of water regime on maize yield and its components. Irrigation at 55% depletion of available soil moisture (12) produced the highest maize yield and its components. While the irrigation at 85% depletion of available soil moisture (14) gave the lowest maize yield. Increasing nitrogen fertilization level up to 130 kg ted' highly Significantly increased maize yield and its components. The foliar application of zinc produced the higher maize yield than the SOil applied zinc. - The highest amount of irrigation water applied and water consumptive use (WCU) were obtained with irrigation at 40% depletion of available soil moisture. While the irrigation at 85% depletion of available soil moisture gave the highest values of crop water use efficiency (CWUE). - Soil salinity (ECe), soluble ions and SAR were decreased with increasing the amount of irrigation water applied. On the other hand, decreasing the amount of irrigation water applied (14 Treat.) led to salts accumulation in the soil profile during both seasons. Generally, it could be concluded that increasing nitrogen fertilization level up to 130 kg tee" and irrigation at 55% depletion of available soil moisture with 150 ppm foliar spray of zinc gave the highest maize yield and its components | ||
| Keywords | ||
| Maize yield; water regime; nitrogen level and zinc application water relation | ||
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