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Indian Journal of Agronomy
Year : 2010, Volume : 55, Issue : 2
First page : ( 95) Last page : ( 99)
Print ISSN : 0537-197X. Online ISSN : 0974-4460.

Influence of non-monetary inputs on growth and yield of rice (Oryza sativa) under system of rice intensification (SRI)

Bommayasamy N.*,1, Ravisankar N., Subramani T.

Central Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 101.

1 Corresponding author: (E mail: samygs81@yahoo.co.in).

Present address:1 Krishi Vigyan Kendra, Central Agricultural Research Institute, Port Blair 744 101.

Received:  November,  2009.

Abstract

Field experiments were carried out from 2003 to 2005 at Agricultural College and Research Institute, Killikulam, Tamil Nadu to optimize the establishment techniques of System of Rice Intensification (SRI). The treatments consisted of types of nursery and age of seedling in main plot, three different plant geometry in sub-plot and two number of seedlings/hill in sub sub-plot and replicated thrice. SRI and conventional nursery with 14-days-old seedlings had registered statistically similar yields as that of conventional nursery with 21 days old seedlings. However, conventional nursery recorded higher nutrient uptake leading to more depletion of soil fertility. Closer spacing (20 cm x 20 cm) had higher number of productive tillers/m2 (491) but number of filled grains/panicle (116.7) are lower resulting in significantly higher grain (8.0 t/ha) and straw yield (9.1t/ha). Number of seedlings/hill failed to exert any significant influence on either yield, nutrient uptake or residual soil fertility.

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Keywords

Density, Highlands, Lighting, Seedlings, Transmission, Yield.

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