EFFECT OF LEVELS AND SPLITTING OF N FERTILIZATION ON GROWTH, YIELD COMPONENTS, YIELD AND GRAIN QUALITY OF SOME RICE CULTIVARS Oriza sativa L | ||
| Journal of Productivity and Development | ||
| Article 8, Volume 12, Issue 2, July 2007, Pages 463-476 PDF (185.88 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpd.2007.44969 | ||
| Author | ||
| Magdy Fathy Abd El-Maksoud* | ||
| Plant Production Department, Efficient Productivity Institution, Zagazig Univeristy, Egypt. | ||
| Abstract | ||
| Two field experiments were conducted at the experimental farm of the Institute Efficient Productivity, Zagazig University, located at Ghazala village, Sharkia Governorate. The aim of the study was to know effect of nitrogen fertilization levels and its splits on growth and yield of three rice cultivars. The experiments were conducted during 2005 and 2006 summer growing seasons. The tested cultivars were Giza 178, Sakha 103 and Sakha 104. Two nitrogen fertilizer levels 40 and 60 kg were split and applied at two, three and four equal doses. The most important results were: the rice cultivars differed in their growth, grain yield, yield components and quality characters. Where, Sakha 103 was the superior in most characters and Sakha 104 in the second order. Increasing nitrogen fertilization levels from 40 to 60 kg N/fad increased the most yield components which led to significant increase in grain yield/fad. Meantime, rice grain quality was improved significantly with increasing nitrogen fertilizer level. Increasing of N splitting caused significant increases in growth, yield and yield components. Since four splits was the superior and three splits came in the second rank but two splits treatment was the latter in most characters. Rice grain quality was not affected by nitrogen fertilizer splitting. Interaction effect between nitrogen fertilizer levels and its splitting was significant on number of unfilled grains/panicle, number of filled grains/panicle and grain yield/fad. | ||
| Keywords | ||
| Rice cultivars; Nitrogen fertilization; N splitting; Growth; yield components and grain quality | ||
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