Showing papers in "Agriculture, Forestry and Fisheries in 2010"

Tiller dynamics in indica and tropical japonica rice from transplanting stressed seedlings under irrigated conditions

Abstract: An experiment was conducted at JICA, Tsukuba, Japan from April to October 2009 to elucidate the effect of transplanting stress on the growth and development of two rice varieties; IR – 64 (Indica) and a Tropical Japonica (Demadola). Four different transplanting options and the two varieties were tested in a factorial experiment of randomized complete block design with 3 replicates. Tiller production was higher for Indica varieties. It was also evident that though total tiller production was high for the different stress levels for the Indica variety; tiller mortality was also high; resulting in slightly higher effective tiller numbers compared to the normal planting. Stem elongation or rhizomes with multiple nodes were observed in Indica seedlings that were severely damaged thus resulting in higher production of tillers. The increase in the production of high effective tiller number could increase the yield of rice for farmers who apply very little or no inputs at all in their rice production.