The New Encyclopædia Britannica in 30 Volumes: Macropædia : Knowledge in Depth. - 19 Bd, Volumes 1-19Encyclopædia Britannica, 1974 |
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Page 139
Macropædia : Knowledge in Depth. - 19 Bd. A pest defined Pest Control most of which are insects . In spite of the small number of pest species , the losses attributable to insects and mites , When man hunted animals and foraged for food ...
Macropædia : Knowledge in Depth. - 19 Bd. A pest defined Pest Control most of which are insects . In spite of the small number of pest species , the losses attributable to insects and mites , When man hunted animals and foraged for food ...
Page 147
... pest's ( Dacus cucurbitae ) , and the codling moth ( Carpocapsa biology and ecology before a control program is underpomonella ) . Some limited field experiments have also ... pest will continue to be maintained . Integrated Pest Control 147.
... pest's ( Dacus cucurbitae ) , and the codling moth ( Carpocapsa biology and ecology before a control program is underpomonella ) . Some limited field experiments have also ... pest will continue to be maintained . Integrated Pest Control 147.
Page 148
... pest problems , an grams differ in this respect from programs that attempt increase in cotton yields , and reduction of control costs . to eradicate or maintain pests ... pest control ; F.A. GUNTHER and L.R. JEPPSON , Modern 148 Pest Control.
... pest problems , an grams differ in this respect from programs that attempt increase in cotton yields , and reduction of control costs . to eradicate or maintain pests ... pest control ; F.A. GUNTHER and L.R. JEPPSON , Modern 148 Pest Control.
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