EFFECT OF PRECEDING WINTER CROPS AND BIOLOGICAL FERTILIZATION ON GROWTH AND YIELD OF RICE UNDER DIFFERENT LEVELS OF NITROGEN FERTILIZATION | ||
| Journal of Plant Production | ||
| Article 4, Volume 27, Issue 12, December 2002, Pages 8021-8032 PDF (599.05 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2002.257186 | ||
| Author | ||
| E. M. Ibrahim, | ||
| Field Crop Res. Inst., Agric., Res. Cent., Giza, Egypt | ||
| Abstract | ||
| Two field experiments were carried out at Tag El-Ezz, Agric. Res. Station during the two successive summer seasons 2000 and 2001 to study the combined effect of two winter preceding crops, i.e. clover (Trifolium alexandrinum, L.) and wheat (Triticum aestivum), three levels of nitrogen (30, 45 and 60 kg N/fad) and biological fertilizer (Cyriallen) at the rates of zero, 300 and 600 g/fad on growth, yield and yield components of rice (Sakha 101 variety). The main results can be summarized as follows: 1- Preceding winter crops had significant effects on plant height, flag leaf area, number of panicles/m2, number of grains/panicle, 1000 grain weight as well as grain and straw yields/fad in both seasons while panicle weight was markedly affected in the first season only. Aforementioned traits were superior when rice grown after clover than wheat in sequence rotation. 2- Raising nitrogen fertilizer levels up to 60 kg N/fad had significantly increased all the studied characters in both seasons. 3- Biological fertilization by cyriallen application at the rate of 600 gm/fad markedly recorded the highest mean values in all the studied characters. 4- In both seasons the interaction between the previous winter crops and nitrogen level had significant effects on number of panicles/m2, panicle weight and grain yield (t/fad). Furthermore the interaction between preceding crops and biological fertilizer rates had significant effects on panicle weight and grain yield (t/fad). Also the interaction between nitrogen levels and biological fertilizer rates (cyriallen) had significant effects on, flag leaf area, panicle weight, 1000 grain weight, grain and straw yields (t/fad) and finally there were a significant effects for the interaction between preceding crops, nitrogen levels and biological fertilizer rates on grain yield/fad where the highest grain yield/fad was achieved with fertilizing rice with 45 kg/fad under the rate of 600 gm cyriallen/seeds/fad when the preceding winter crop was berseem. | ||
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