Classification of weeds Ecology of weeds Dispersal of weeds PHYSICAL PROPERTIES OF SOIL Aquatic weeds Beneficial effects of weeds Black pepper CASTOR CHEMICAL PROPERTIES IF SOIL CHEMICAL PROPERTIES OF SOILS COWPEA CULTIVATION METHOD Cardamom Cereal Crops Classification of spices Cole crops Common Diseases of Fibre Crops Common Diseases of Pulse Crops Crop weeds competition Crop-weed association Cultivation Cultivation of vegetables Essays FERTILIZERS FRUIT GROWING Favourable conditions of growth for potato Fertility Management of Cultivable Soils Fertilizers Formulation of herbicides GRAM