Crop yields Crops and climate 4 Agricultural productivity 2 Agronomy 2 Crops 2 Climate changes 1 Climatic change 1 Climatic changes 1 Climatic factors 1 Cotton 1 Crop production 1 Crop yield 1 Crops and soils 1 Ecosystems 1 Emission 1 Environmental factors 1 Field Crops, (New March 2000) 1 Food supply 1 Glycine (Fabaceae) 1 Gossypium 1 Grasslands 1 Greenhouse gases 1 Horticultural Crops, (New March 2000) 1 Land use, Rural 1 Maize 1 Meteorology and Climate 1 Oryza 1 Oryza sativa 1 Plant Production 1 Plant breeding 1