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EFFECT OF TRANSPLANTING DATES ON PADDY YIELD OF FINE GRAIN RICE GENOTYPES

MUHAMMAD EHSAN SAFDAR^1*, 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., 16^th May, 1^st June , 16^th June, 1^st July, 16^th July and 1^st August during each year. The 3 years average data showed that maximum number of fertile tiller hill^-1 (19.1) was recorded in 1^st 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 16^th July transplanting dates, irrespective of genotypes. However, minimum paddy yield was recorded in 1^st 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, 16^th 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

^*Corresponding author: Email. ehsan_safdar2002@yahoo.com