Insect pests of farm, garden and orchard . IiG. 24.—Above, a poorly kept roadside with railfence overgrown withbraml)les, thus affording protection for large numbers of destructiveinsects during winter. Below, a well kept roadside, offering the leastprotection possil)le for destructive insects. (After Webster, U. Agr.). 36 FARM METHODS FOR THE CONTROL OF INSECTS 37 the case, it will uaually be preferred to them as far as it isavailable. Clean Farming.—After a crop has been harvested there isusually some portion of the plant which is allowed to remainon the land. In this refuse the inse
Insect pests of farm, garden and orchard . IiG. 24.—Above, a poorly kept roadside with railfence overgrown withbraml)les, thus affording protection for large numbers of destructiveinsects during winter. Below, a well kept roadside, offering the leastprotection possil)le for destructive insects. (After Webster, U. Agr.). 36 FARM METHODS FOR THE CONTROL OF INSECTS 37 the case, it will uaually be preferred to them as far as it isavailable. Clean Farming.—After a crop has been harvested there isusually some portion of the plant which is allowed to remainon the land. In this refuse the insects peculiar to the crop oftenfeed and multiply until killing frost and then hibernate overwinter, ensuring injury to similar crops on the same land the x\&-^^. Fig. 25.—A field of cal)l)age stumps in inidwmlcr, aftordinjtions for the hibernation of cabbage pests. id(^al condi- next year. Thus the wheat joint worm and the corn stalk-borerboth winter in the stubble of those crops, and the chinch-bugcommonly hibernates in the ])utts of corn stalks, all of whichmay be largely controlled by burning the stubble. Possiblythe most important means of control of the cotton Ijo-11 weevilis the destruction of the stalks in the fall as soon as the cottoncan be picked, thus preventing the weevils feeding and starvingthem out l)efor(^ they are ready to hibernate, and removing theshelter for hil)ernation. Thus all the remnants of a crop such as 38 INSECT PESTS OF FARM, GARDEN AND ORCHARD stubble, vines, Icuvcs, or slumps, us may be, shoukl be removedfrom tlie field as soon after it is harvested as possible. As manyinsects hil)ernat(> in such iul)l)ish, this faet may sometimes beutilized by ihoioughly cleaning a field and leaving one or twopiles of rubl
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