MAXIMIZING RICE PRODUCTIVITY BY ALGALIZATION UNDER WATER DEFICIENCY | ||||
| Journal of Plant Production | ||||
| Article 6, Volume 3, Issue 12, December 2012, Page 3011-3026 PDF (597.78 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2012.85366 | ||||
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| Authors | ||||
| G. A. Abdel-Fattah; M. M. Shehab; W. M. El Khoby; A. M. El-Ekhtyar | ||||
| Rice Res. and Training Center, Field Crops Res. Inst., Agric. Res. Center, 33717 Sakha-Kafr El-Sheikh, Egypt | ||||
| Abstract | ||||
| Two field experiments were conducted at the Experimental Farm of Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Egypt, during 2009and 2010 summer seasons to investigate the effect of irrigation intervals,3-days "T1",6-days "T2" and 9-days "T3" on three rice cultivars; namely, Giza 177, "V1", Giza 178 "V2" and Sakha 104 "V3" with Algalization (cyanobacteria) rates; namely, control (without Algalization, C0), 1000 g/fed "C1" and 1500 g/fed "C2 ". The data showed that Giza 178 gave the highest values, while, Giza 177 had the lowest for plant height, number of tillers/m2 and number of roots/hill. Also, Giza 177 had the superiority over the other two cultivars in grain yield and water utilization. This efficiency could be attributed to its higher number of filled grains/panicle, sterility( %) and 1000- grain weight. On the other side, the gel consistency and gelatinization temperature of all rice cultivars were soft and low, respectively. Data clarified that increasing irrigation intervals decreased plant height, number of , tillers/m2 DMA, panicles length, number of panicles/ m2, number of filled gains/panicle, 1000-grain weight and grain yield. However, the opposite was true for sterility percentage and WUE. In addition, rice quality was not significantly affected by irrigation intervals. All growth characters were significantly increased due to Algalization compared to the non-algalized plots. Also, grain yield, grain yield components, WUE and rice quality were significantly increased due to algalization, compared to the non-algalized plots. Generally, it could be concluded that, from the study, rice might be irrigated every six days and save water without deleterious effects, on its production, under Algalization with cyanobacteria with the rate ranged from 1000 to 1500 g/fed. | ||||
| Keywords | ||||
| Irrigation intervals; Algalization; Cyanobacteria; rice cultivars | ||||
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