Show rotation plan to foil chinch bugs locate legume crops so as to isolate small grain corn and grass by A L lg almit ast chief of 01 sol poll expert ment field giemi university 0 of illinois service S threatened Thre atene with the heaviest chinch infestation bug infestation ever recorded in the history of the state illinois farmers should consider revising their rotations as a means of partially protecting their 1931 1934 corn crop lly by tills this is meant the location of legume crops in the rotation so as to isolate the small grain corn and grass fields where here the chinch bugs are prone to brood breed and feed it has been proved vint ali it le legumes gurries ore are distasteful to tills this insect pest and separating the bugs favorite crops with leg legumes unies Is suggested is as one of several control measures the addition of one or more legumes will improve the fertility of the lie land on which they ate aie grown A live five year rotation supplying tills this dual purpose may consist of corn oats clover corn ant and soybeans in this case not only Is CA CO per cent of the farm in legumes but SO 80 per cent is in cah ca h crops one crop of corn Is completely set off between two legumes which in many cases will prevent serious damage from chinch bu bugs s the fact that the oats field will have a spring spoiling seeding of clover may deter rapid multiplication of the insects in tills crop if the clover gets a strong early start when wheat is grown with will a m masl al mum of corn a rotation of corn corn beaus beans wheat and clover can be planned an important feature of tills this combination Is that the small grain crop which Is always the early breeding ground of the chinch bug Is isolated from the corn crops by a legume on either stile side with a good spring beeding of clover in the wheat tills this crop is not susceptible to the bugs where a four year rotation of corn oats wheat and clover Is followed a protective revision would be to substitute soybeans tor for the oats tills would carry the isolation advantages of the wheat rotation above and a good stand of clover in the m wheat heat would keep 75 per cent of the land in legumes throughout the growing season |