POPULAR AND PRACTICAL ENTOMOLOGY.: The Relation of Agronomy to Entomology: A Practical Illustration
Numerous instances are on record where the occurrence of a noxious insect has resulted in recommendations 1% hich are not only effective in controlling the pest, but a t the same time a benefit t o agriculture. I t is here sufficient to illustrate with such common examples as the northern corn root-worn1 (Diabrotica loneicornis) and the corn root-aphis ( A p h i s maidi-radicis) which are controllable by proper rotations, and the alfqlfa weekil (Phytonomus posticus) which is checked by the use
... checked by the use of methods beneficial t o the plant and disastrous to the insect. Recommendations for Hessian fly control may liken ise be considered beneficial from the point of >jen of the agronomist, since it has been learned that the time of seeding t o avoid the fly attack in the fall is coincident with the proper seeding date regardless of insect prevalence, and further that the supplementary recommendation, namely that of destroying the summer brood of fly by ploming under the stubble, is a good agronomic practice according to certain authorities, and especially in those sections where the fly is so frequently abundant.