Crop yield Plant Production 18 Plant Breeding and Genetics 11 Crop Produce 10 Crop production 10 Food Composition and Quality 9 Plant Pests, (New March 2000) 9 more ... Plant Physiology and Biochemistry 9 Plant pests 9 Plant diseases 8 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 8 Crop quality 7 Plant development 7 Field Crops, (New March 2000) 6 Horticultural Crops, (New March 2000) 6 Plant breeding 6 Crops 5 Genetic improvement 5 Growth 5 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 5 Weeds 5 Weeds and Noxious Plants 5 Cultivars 4 Irrigation 4 Meteorology and Climate 4 Plant Water Relations 4 Productivity 4 Soil Water Management (Irrigation and Drainage), (Revised June 2002) 4 Sustainability 4 Agricultural productivity 3 less ...