| 0. agriculture (142) |  |
| Acid rain (8) | |
| Agribusiness (12) | |
| Agricultural waste (2) | |
| Agronomy (18) | |
| Animal breeding (4) | |
| Animal husbandry (1) | |
| Animal materials (12) | |
| Apiculture (11) | |
| Cereals (407) | |
| Climate-based agriculture (2) | |
| Crop (178) | |
| Dairy (62) | |
| Farm equipment (3) | |
| Farming (43) | |
| Forestry (222) | |
| Fruits (427) | |
| Gardening (25) | |
| Germination (1) | |
| Gmo (90) | |
| Grains (102) | |
| Grazing (3) | |
| Greenhouse (163) | |
| Hydroponics (10) | |
| Irrigation (64) | |
| Livestock (375) | |
| Monoculture (2) | |
| Orchardry (2) | |
| Organic agriculture (10) | |
| Pesticides (66) | |
| Postharvest (12) | |
| Precision farming (4) | |
| Small farm (11) | |
| Sustainable agriculture (2) | |
| Tobacco (9) | |
| Tomato (1) | |
| Tree (311) | |
| Urban agriculture (6) | |
| Vegetables (171) | |