Abstract:
In an experiment to study the crop weed competition for 3 major nutrients
in a short duration rice, carried out at the College of Agriculture, Vellayani, it
was found that in general competition for the three nutrients N, P and K was
severe between 21-40 days after transplanting. Weed removal during 21 -30 days
helped the crop to absorb more of the nutrients. The demand for the nutrients
was in the order of K> N> P by crop and weed. The nutrient uptake by weed
was negatively correlated with crop yield while the uptake by weed and crop
were also negatively correlated.
