Diseases and pests Trees 3 Aphids 1 Cultivation of oranges 1 Dissertations, Academic (Ph.D) 1 Entomopathogenic nematodes 1 Forest protection 1 Harvesting and marketing 1 Hevea 1 Insect societies 1 Insect-plant relationships 1 Integrated control 1 Leaf fall 1 Leaves 1 Lemons and limes 1 Molecular genetics 1 Nutritional dis orders 1 Rubber plants 1 Spice crops 1 Thesis (Ph.D)-Botany 1 Tropical crops 1 Wounds 1 injuries 1