Show lice inflict heavy damage on cattle DDT treatment guts cuts high winter losses lice are injurious to all types yv ol 01 cattle animals produce less meat and milk if lice are unchecked young animals and poorly nou nour dished old animals suffer most most rom from lice the winter sea season 8 on Is the time lice are ae bad on cattle the he louse population it n builds up then dr harold gunderson extension entomologist at iowa state college says one louse unchecked in fall all means 1000 the following march for lice control on cattle DDT is being used successfully early U arly in fall fail before cold weather arrives it Is mixed with water and sprayed on the animals after cold weather comes a DDT dust is recommended farmers are being advised to use a dust containing 10 per cent DDT some of the powdered louse killers on the market contain less than 10 per cent DDT but have other effective insecticides combined with the DDT the rotenone dusts recommended for cattle grub control can be used for lice control usually they are diluted for uce lice to cover greater area and reduce the cost for instance one pound of a cattle grub U dust 1 c containing aaning 1 per cent rotenone can be mixed with two pounds 0 of f hour flour to make an effective louse lousa killer world s largest potato yard found in chicago the worlds largest potato yard it is located not in idaho nor in maine but in the largest city near the geographical center of the nation chicago in the wood street yards ot of the chicago and northwestern railroad aft it an av average of carloads of potatoes ta oes are handled annually many thousands of 0 tons of other vegetables also pass through this yard the yard is the central marketing point lor for potatoes which come coma in from virtually v every state in the union dealers and brokers assemble in the yard each day before dawn to buy sell or an aa average ot of bushels dally daily the wood street yard Is a far cry from the wooden platform which served as a terminal years ago milk testing traced to michigan farmers hy by louls louis sellers seller forty years ago a few progressive dairy farmers in michigan borgaa lied the first cow testing association in the e united states they wanted to improve the profitableness of their herds they hired a tester to weigh part of the increase in production can be credited to pro progressive grer michigan dairy farmers and test the milk of each cow and to keep a record of her teed feed cost and inco income me they wanted that information so BO they could cull the low producers from their herds and feed the rest more economically in the tha first lour four years ol of their pioneer effort these michigan farmers doubled the average profit per cow since then thousands of other dairy farmers have followed their example with equally striking results new chemical utilized for grasshopper poison cesear research ch men at various state colleges college 8 after try trying I 1 ng benzene a chemical discovered in europe and brought to this country for or experimental use as a grasshopper poison believe it is the best thing yet yel discovered lor for hog mange as well as grasshopper control the compound is a powder that can be used as either a spray or dip for or hogs bogs and Is sold lold under various trade names |