RICE PRODUCTIVITY AS AFFECTED BY INTEGRATION OF ORGANIC AND INORGANIC NITROGEN FERTILIZERS | ||
| Journal of Plant Production | ||
| Article 4, Volume 25, Issue 12, December 2000, Pages 7357-7365 PDF (627.18 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2000.260237 | ||
| Author | ||
| R. A. Ebaid, | ||
| Rice Research and Training Center , Field Crops Research Institute Agriculture Research Center ,Sakha , Kafer El-Sheikh , Egypt | ||
| Abstract | ||
| Two field experiments were carried out at Etai EL- Baroud Agricultral Research Station Farm, Rice Research and Training Center (RRTC ) –Sakha –Kafer El –Sheikh –Egypt, to study the influence of integration of organic and inorganic nitrogen fertilizers on the productivity of Sakha 101 rice variety in two consecutive seasons (1997 and 1998). Four organic fertilizer rates were added ( 0, 10, 20 and 30 t/ha ) to the dry soil before flooding, while, nitrogen fertilizer was applied to rice crop at the rates of (0, 48, 96 and144 kg N / ha ) in the form of Urea (46.5%N) (2/3 basal and incorporated into the dry soil + 1/3, 7 days before panicle initiation). The main results indicated that increasing nitrogen fertilizer up to 144 kg N /ha and 30 t/ha as organic fertilizer increased plant height, panicle weight, 1000-grain weight, grain and biomass yields while, 20 t / ha as organic fertilizer and 96 kg N / ha were adequate for the highest values of panicle length, number of panicles / hill and number of grains / panicle. Data also indicated that increasing organic and inorganic nitrogen fertilizer significantly decreased harvest index and the application of 10 t / ha and 30 t /ha organic fertilizer saves about 48 and 96 kg N/ha, respectively. Data also indicated that 20 t / ha organic fertilizer and 96 kg N / ha are adequate for the highest hulling and milling out puts in the two growing seasons. Data concluded that the application of organic fertilizer besides its save some of the inorganic fertilizer its improved soil physical and chemical properties. | ||
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