| A | B |
|---|
| Subsistence | Agriculture that provides only for the survival of the immediate family |
| Monoculture | Growing only one type of crop |
| Green Revolution | The program of the 50's and 60s that concentrated on feeding the world's growing population |
| Integrated Pest Management | An approach to agriculture that attempts to minimize the use of chemicals |
| Parasitiods | A type of organism that lays its eggs within another organism |
| Biological control | Using living things to control other things (eg. Predators, parasitoids, and pathogens0 |
| Pedogenesis | Soil formation |
| Clay | The smallest soil particles |
| Silt | Medium sized soil particles |
| Sand | The largest soil particles |
| Porosity | The amount of air spaces in soil |
| Permeability | The ability of water to move through soil |
| Micronutrients | Nutrients needed by plants in small quantities (eg. Cu, Fe, Mb) |
| Macronutrients | Nutrients needed by plants in large quantities |
| Conservation tillage | Leaving 30% of the crop behind as residue on the field |
| Green manure | Planting a cover crop and plowing it under |
| Shelterbelt | Planting rows of trees as wind breaks |
| Summer fallow | Leaving the field unplanted for a season |
| No-till planting | Planting without plowing up the land |
| Contour plowing | Plowing with the contour of the land to minimize erosion by water |
