Agroecology: The Science of Sustainable Agriculture

“internal biotic controls (i.e., predator/prey relationships) prevent destructive oscillations in pest populations”

p. 57 #6492090

“Pesticides and insecticides replace equilibriating mechanisms such as pest and insect predators”

p. 29 #6492094

“alternate host and thus a continuous food supply for the rove beetle, A. bilineata”

p. 103 #6492113

“A. pallipes numbers decline exponentially from weedy borders and cow pastures”

p. 103 #6492114

“raising the water level, which carries the larvae into the field ridges, where birds congregate to eat them”

p. 121 #6492169

“alfalfa in the rotational scheme can enhance the abundance and diversity of predators and parasites”

p. 165 #6492201

“A compatible winter crop can be responsible for the successful overwintering of large numbers of parasites”

p. 165 #6492212

“Strip-cutting alfalfa forces predators to move from alfalfa to other crops”

p. 165 #6492213

“minerals lost by annuals are rapidly taken up by perennial crops”

p. 52 #6492089

“cowpea mosaic and chlorotic viruses occurred at lower levels in cowpea intercropped with cassava”

p. 113 #6492146

“sheds its leaves at the onset of the wet season, permitting enough light for sorghum and millet”

p. 117 #6492148

“sheds its leaves at the onset of the wet season, permitting enough light for sorghum and millet”

p. 117 #6492149

“velvet beans to eliminate the worst of the weeds such as Cyperus rotundus and Imperata cylindrica”

p. 135 #6492152

“Leaf nitrogen contributed a significant 23 percent increase in maize yields”

p. 156 #6492198

“L. mutabilis can fix 200 kg of nitrogen per hectare per year”

p. 158 #6492199

“substantially reduced the incidence of virus diseases”

p. 158 #6492200

“Rape, pea, or mixed grass legume green manures reduce populations of Gaeumannomyces graminis in wheat”

p. 166 #6492202

“black locust is a nitrogen fixer and also produces pest-resistant wood”

p. 162 #6492203

“fertilized their crops with litter from nearby Acacia forests, as is traditional”

p. 166 #6492204

“Cabbage aphids, flea beetles, diamondback moths, and corn earworms are all insect pests regulated with specific crop mixes”

p. 113 #6492156

“Cabbage aphids, flea beetles, diamondback moths, and corn earworms are all insect pests regulated with specific crop mixes”

p. 113 #6492157

“Cabbage aphids, flea beetles, diamondback moths, and corn earworms are all insect pests regulated with specific crop mixes”

p. 113 #6492158

“infestations of Lepidoptera larvae in ripening corn ears were significantly higher in new varieties than in traditional ones”

p. 121 #6492159

“This practice is partly an attempt to avoid damage by rice stem borers”

p. 127 #6492160

“a grasshopper pest in rice is trapped at night and eaten”

p. 116 #6492161

“severe damage done to an isolated cassava crop by the variegated grasshopper after all other crops have been harvested”

p. 120 #6492162

“degree of damage to cassava and concerning the egg-laying behavior and egg-laying sites of the females”

p. 117 #6492163

“peasants placed branches of Cestrum parqui in potato fields to repel Epicauta pilme beetles”

p. 121 #6492164

“Sowing cowpeas or mung beans into standing rice stubble reduces damage by bean flies, thrips, and leafhoppers”

p. 127 #6492165

“Sowing cowpeas or mung beans into standing rice stubble reduces damage by bean flies, thrips, and leafhoppers”

p. 127 #6492166

“Sowing cowpeas or mung beans into standing rice stubble reduces damage by bean flies, thrips, and leafhoppers”

p. 127 #6492167

“place castor leaves in recently planted corn fields to reduce populations of a nocturnal tenebrionid beetle”

p. 121 #6492168

“more corn rootworms are found in a continuous corn monoculture”

p. 165 #6492205

“Infestations of fall armyworm in corn...can be greatly reduced by interplanting both crops”

p. 165 #6492206

“Empoasca spp. (leafhoppers) and Diabrotica spp. (leaf beetles) in beans can be greatly reduced by interplanting”

p. 165 #6492207

“Diabrotica spp. (leaf beetles) in beans can be greatly reduced by interplanting both crops”

p. 165 #6492208

“use of plants that readily form symbiotic associations, such as legumes”

p. 13 #6492076

“Soil nitrogen can be increased by incorporating legumes in the mixture”

p. 52 #6492088

“plants that differ in seasonal nutrient use...complementary and facilitating roles”

p. 98 #6492107

“legume component would help maintain an internal fertility supply”

p. 99 #6492108

“fixed nitrogen from legumes is available to the cereal, thereby improving nutritional quality”

p. 113 #6492147

“Azolla spp. (a symbiotic association of blue-green alga and fern), which promotes fixation of nitrogen—adding up to 50 kg per hectare”

p. 127 #6492150

“epidemic of southern corn leaf blight that devastated the corn crop in the United States in 1970”

p. 61 #6492091

“destruction of millions of tons of wheat in the midwestern states in 1953 and 1954 by race 15B of Puccinia graminis f. sp. tritici”

p. 61 #6492092

“potato late-blight epidemic and subsequent famine in Ireland in the mid-19th century”

p. 61 #6492093

“downy mildew, normally a major maize disease”

p. 113 #6492153

“cowpea mosaic and chlorotic viruses occurred at lower levels in cowpea intercropped with cassava”

p. 113 #6492154

“cowpea mosaic and chlorotic viruses occurred at lower levels in cowpea intercropped with cassava”

p. 113 #6492155

“Gaeumannomyces graminis in wheat by stimulating antagonists”

p. 166 #6492209

“substantially reduced the incidence of virus diseases”

p. 158 #6492210

“major onion insect pest, the onion maggot (Delia antiqua)”

p. 103 #6492109

“problem of emerging flies after onions are harvested...cull onions becomes a major issue”

p. 104 #6492110

“continuous food supply for the...cabbage maggot”

p. 103 #6492111

“planting an entire region with genetically similar varieties could lead to disastrous attacks by either insect pests or diseases”

p. 72 #6492112

“severe damage done to an isolated cassava crop by the variegated grasshopper after all other crops harvested”

p. 120 #6492151

“Pest control with parasites and botanicals”

p. 154 #6492211