OCR Text |
Show on c:rt;iin typis of sugnr beet ! lnnd climiniiics damage from the sugar beet root aphid. Watering land heavily infested with cutworms cut-worms will force many to surface where they will be eaten by birds toads, frogs or attacked by insect in-sect parasites. Proper Timing of Farm Practices Adds to Income Fall and spring plowing of farm lands, destruction of trash, weeds and crop residues and crop rotation are ordinary farm practices prac-tices that If timed right can mean reduced insect damage and increased farm income, Dr. G. P. Knowlton, associate entomologist for the USAC experiment station declared this week. Fall and early spring plowing and cross harrowing of roadsides and ditch banks to destroy grasshopper grass-hopper eggs was recommended as a control measure toy Dr. Knowlton. Knowl-ton. This practice reduced injury from grasshoppers in 1943 and also reduce injury from certain other pest insects. Destruction of trash, weeds and crop residues will eliminate favorable favor-able over-wintering places for thousands of pest insects. Sping elimination of the Russian thistle and other weeds from tomato and beet fields and fence rows may help reduce curly-top injury by preventing growth of plants which are favorable hosts of this pest. Elimination of weeds also reduces injury from the false cinch bug, flea beetle, tomato hornworm and corn root aphid. "Crop rotation, commonly practiced prac-ticed on dry farms is helpful against many pests. Often cultural control practices are the only practical control measures that can be economically used on low unit-value unit-value land," Dr. Knowlton said. "Cultural control usually is most effective in controlling insects which have limited powers of migration, mi-gration, which feed on only one or a few related host plants and which breed slowly and feed for a relatively long time. Because this is true, farmers will find it advisable ad-visable to change from small grains to alfalfa, from truck crops in order to get maximum benefits." Frequent cultivation helps to control certain soil insests, Dr. Knowlton stated. Keeping soil moist |