Rainfed rice - IRRI books - International Rice Research Institute

Dealing with Decline
in Soil Fertility and
Land Productivity
S
oil is the storehouse of all plant nutrients. Roots absorb nutrients
from the soil for plant growth and nourishment. A fertile soil supports
healthy crop growth and produces good yield and good-quality
grains by supplying major nutrients and micronutrients in a balanced
proportion to the crop. Decline in soil fertility seriously hampers crop
growth and reduces yield drastically. It makes plants more susceptible to
diseases and pest attack and also decreases the productivity of the land.
Fertile soil
Has adequate supply of plant
nutrients.
Has no soil problems.
Has adequate rooting depth and
water-holding capacity.
Has high/normal organic matter
content.
Has medium to fine soil texture.
Poor soil
Has inadequate supply of plant
nutrients.
Has soil-related problems.
Has shallow depth and poor waterholding
capacity.
Has low organic matter.
Has coarse texture.
170
Soil is a natural resource. If
sustained, it can eradicate hunger
from the world. Therefore, all efforts
should be made to keep it productive
and sustainable.