Modification of Planting Geometry to Exploit Border Effect for Yield Improvement in Rice
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 5
Abstract
Border effect and its effect on yield have been studied in rice plants grown in fields with different planting geometry. The objective of this study was to assess the border effect under different planting geometry. Rice variety “Jyothi” was grown on the experimental plots at Regional Agricultural Research Station, Pattambi, during 2014 and 2015 kharif season with 4 types of planting geometry I. Paired row planting with 35-15X10cm spacing (PRP-1), Paired row planting with 30-15X10cm spacing (PRP-2), Equal row spacing, planting with 20X15 cm (ERP) and Circular planting such a way that each plants get 50 cm spacing towards one side (CP). Yield and yield components were measured for outermost rows and inner rows. A significant yield difference was observed between plots. High productive tillers/hill, number of grains/panicle and high grain filling % leads to the yield increase. Significant difference in border effect was observed ranging from 21.9 to 69.6 %. The treatment PRP-1 which recorded the highest yield of 5315 kg grains/he is having the lowest border effect. Since the border effect is distributed throughout the population contributing the yield increase, this treatment is suitable for exploiting a border effect for yield improvement in rice.
Authors and Affiliations
Moossa P. P, Thulasi V, Raji P, Narayanankutty M. C
Keywords
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