S. Ram et al., RESPONSE OF WET-SEASON RICE (ORYZA-SATIVA) TO NITROGEN AND PHOSPHORUSIN PARTIALLY RECLAIMED SODIC SOIL, Indian Journal of Agricultural Sciences, 67(11), 1997, pp. 514-517
A field experiment was conducted in rainy season (kharif) of 1993 and
1994 at Faizabad to find out the nitrogen and phosphorus requirements
of wet-season rice (Oryza sativa L.) in partially reclaimed sodic soil
. Nitrogen @ 120 kg/ha for rice in normal soil was enough for growing
the crop in partially reclaimed conditions. Phosphorus @ 13 kg P/ha (h
alf the dose for rice in normal soil) yielded grain and straw at par w
ith 26 and 39 kg P ha. Response equations for nitrogen and phosphorus
were worked out. The economic optimum for nitrogen was 86.8 kg N/ha an
d for phosphorus 27 kg/ha. The quality of grains for protein and miner
al composition at 120 kg N/ha and at 13 kg P/ha was equivalent to that
at 180 kg N/ha and 26 and 39 kg P/ha respectively. Application of N a
nd P also improved the physico-chemical properties of sodic soil due t
o better root development in general.