Adaptation 1 Arable land 1 Biological Control 1 Biological control 1 Chemical control 1 Cover crops 1 Crop weed competition 1 Cultural control 1 Environmental Pest Management 1 Environmental factors 1 Establishment 1 Field crops 1 Herbicides 1 Integrated Pest Management 1 Integrated control 1 Life form 1 Mulches 1 Mulching 1 Natural enemies 1 Other Control Measures 1 Pesticides and Drugs; Control, (New March 2000) 1 Physical control 1 Plant Ecology 1 Plant Morphology and Structure 1 Plant ecology 1 Plant succession 1 Seed germination 1 Seedling emergence Soil Management 1 Tillage 1