Table 2.
USGS crop categories in pesticide source data, based on metadata from USGS30,31 and personal communication with USGS staff scientists.
| USGS category | Crops included in category | Additional crops in California* |
|---|---|---|
| Alfalfa | Alfalfa (hay and haylage) | — |
| Corn | Corn (grain and silage) | — |
| Cotton | Cotton (all types) | — |
| Orchards & grapes | Almonds, apples, apricots, cherries (tart and sweet), grapefruit, grapes, hazelnuts, lemons, oranges, peaches, pears, pecans, pistachios, plums & prunes, tangelos, tangerines, temples, walnuts | Chestnuts, “other” citrus fruit, dates, figs, kiwifruit, kumquats, limes, mangoes, olives, papayas, pecans, persimmons, pistachios, “other” tree nuts |
| Other crops | Barley, canola, peanuts, rapeseed, sorghum, sugarbeets, sugarcane, sunflower, tobacco | Christmas trees, flaxseed, grass seed, hops, jojoba, mustard, oats, rye, safflower, taro, triticale, wild rice |
| Pasture & hay | Hay and haylage (excluding alfalfa), pastureland, summer fallow | — |
| Rice | Rice (all types) | — |
| Soybeans | Soybeans (all types) | — |
| Vegetables & fruit | Artichokes, asparagus, blackberries, boysenberries, broccoli, cabbage, carrots, cauliflower, celery, cowpeas, cucumbers, dry beans, garlic, lentils, lettuce, loganberries, melons, onions (dry and green), peas, peppers, potatoes, pumpkins, raspberries, snap beans, spinach, squash, strawberries, sweet corn, tomatoes | Avocados, beets, blueberries, Brussel sprouts, chicory, cranberries, currants, daikon radish, eggplant, escarole & endive, ginger root, greens, guavas, herbs, horseradish, okra, pineapple, radishes, rhubarb, sweet potatoes, turnips |
| Wheat | Wheat (all types) | — |
*California data derives from a different source dataset and so includes some crops not represented in other states. As reported in Table 3, we also make available keys relating USGS crop categories to USDA crop names.