Legumes Nitrogen 4 Nitrogen-fixing plants 4 Field Crops, (New March 2000) 3 Vegetables 3 Cereal crops 2 Dissertations, Academic (Ph.D) 2 Fabaceae 2 Fibres 2 Horticultural Crops, (New March 2000) 2 Nitrogen-fixing microorganisms 2 Oryza 2 Oryza sativa 2 Plant Physiology and Biochemistry 2 Plant Production 2 Pulse crops 2 Rice 2 Root crops 2 Symbiosis 2 Thesis (Ph.D)-Botany 2 Agroforestry 1 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 1 Agronomy 1 Amaranthus 1 Ananas comosus 1 Arachis hypogaea 1 Azolla 1 Bananas 1 Bell Pepper 1 Biochemistry 1