Abstract
This paper presents the chemical changes in various nutrients
in rice plant under sodic soil. The nutrients were applied on
soil test recommendation basis. The sodic soil was low in
several nutrients like available nitrogen, available phosphorus
(P2O5,), sulphur, zinc, manganese, carbon and available
potassium (K2O) was medium. pH and EC of soil was 9.0 and
0.29 dSm-1, respectively. The uptake values of all nutrients
were the lowest in control and highest in NPKS+Zn+Mn
treatment during both the years. Sequential additions of
different nutrients also gave significant increase in uptake. For
obtaining the highest yields of dry matter 87.60 and 90.60 Qha-
1 were required first and second years. The mean total uptake
of N, P, K, S, Zn and Mn was 66.92 Kg, 25.04 Kg, 79.70 Kg,
and 16.30 Kg, 232.90 g and 337.70 g ha-1 respectively was
taken up by the plant. The uptake value of the above
mentioned nutrients were calculated on the basis biological
yield and concentration of the nutrients. The sodic soil of
experimental field was found deficient in almost all the
nutrients tested under missing nutrient technique precisely in
a site specific management trial, satisfactory yield could be
obtained with the addition of N, P, K, S, Zn and Mn on soil
test recommendation basis.