Fertilizers and other Amendments 11 Constitutional amendments 10 Plant Production 9 Constitutional law 7 Fertilizers 7 Crop production 6 India 6 Constitution 5 Constitutional Amendments 5 Crop Produce 5 Nitrogen 5 Plant Nutrition 5 Plant Pests, (New March 2000) 5 Plant Physiology and Biochemistry 5 Plant diseases 5 Cropping systems 4 Food Composition and Quality 4 Horticultural Crops, (New March 2000) 4 Organic farming 4 Plant Breeding and Genetics 4 Plant Cropping Systems 4 Plant pests 4 Plant protection 4 Political questions and judicial power 4 Soil Chemistry and Mineralogy 4 Soil Fertility 4 Soil amendments 4 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 4 Amendments 3 Chemical composition 3