Pak. J. Bot., 40(6): 2403-2411, 2008. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
EFFECT OF TRANSPLANTING DATES ON PADDY YIELD OF FINE GRAIN RICE GENOTYPES
MUHAMMAD EHSAN SAFDAR1*, AMJED ALI1, SHER MUHAMMAD1, GHULAM SARWAR1 AND TAHIR HUSSAIN AWAN2
Abstract: Field studies were carried out to investigate the effect of various transplanting dates on the yield and yield related parameters as well as flowering behaviour of fine rice grain rice genotypes. The experiment was conducted for three successive years from 2004 to 2006. Rice genotypes viz., 98410, 98316,99417, 99512, 99513, 98408, 00521-1, 98404, Basmati 385and Super Basmati were kept in 6 transplanting dates viz., 16th May, 1st June , 16th June, 1st July, 16th July and 1st August during each year. The 3 years average data showed that maximum number of fertile tiller hill-1 (19.1) was recorded in 1st June transplanting date, whereas, plant height (172.1 cm), grains panicle-1 (119.3), 1000 grain weight (21.58) and paddy yield (3.95 t ha-1) were highest in 16th July transplanting dates, irrespective of genotypes. However, minimum paddy yield was recorded in 1st August transplanting date. Regarding rice genotypes, 99417 produced highest plant height (173.5 cm) and 1000 grain weight (23.88 g) but lowest paddy yield (2.82 t ha-1), whereas, 98408 and 99513 gave maximum values of productive tillers hill-1 (24.64) and grains panicle-1 (138.5), respectively. Fine grain rice genotype 99512 showed best yield performance by producing 4.17 t ha-1 paddy yield. Therefore, 16th July was found to be the best date of transplanting and genotype 99512 showed best performance among all the genotypes studied. Flowering behavior showed that all genotypes were photoperiod sensitive except 98410 which showed that it was a non-basmati fine grain genotype.
1University College of Agriculture, University of Sargodha, Sargodha, Pakistan 2Rice Research Institute, Kala Shah Kaku, Shiekhupura, Pakistan |
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