Abstract
Aims: To study the different levels of inorganic fertilizer on filled grain percentage of fifty Sri Lankan traditional rice cultivars. Study Design: RCBD with four replicates. Twenty plants of each replicate were evaluated. Place and Duration of Study: A field experiment was carried out during 2011/2012 Maha season and 2012 Yala season at Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka Methodology: Four levels of inorganic fertilizers were used: No fertilizer, half of the recommended dose, recommended dose and twice the recommended dose. Ten day old seedlings were transplanted in rows with 15 cm X 20 cm spacing according to the randomized complete block design. Data were collected from 80 plants of the middle row. Filled grain percentage/panicle and total biomass (g/plant) were measured after harvesting. ANOVA was performed to see the significant effect of fertilizer on filled grain percentage. Results: The highest filled grain percentage (89.94%) was observed at twice the recommended
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