| Show organic matter rids cropland of bacteria viruses prevent plant diseases from spreading by R C thomas ohio state college few disease causing bacteria will survive in soil whose organic mat ter supply has been built up by the use of green manure crops and the return of crop residues and manure those that do live are so changed that they are no longer a menace to crops extracts from soil rich in organic matter contain viruses that depend for their existence upon living bac tena teria these viruses are especially numerous in organic matter added I 1 fighting bacteria with application of organic matter to the soil through residues from grasses legumes and gram grain crops i when these viruses come in con tact with plant disease forming bac tena teria they have a profound influence on them changing the form of these bacteria and making them harm less so far as plants are concerned the intensity of competition tor for food materials and life itself among organisms inhabiting soil particles are indicated by the tact fact that a single ounce of soil has an estimated living population of 50 million bacterial cells besides many forms of fungi added to these are five live million protozoa pro totoa as wu well as other forms of organisms beneficial bacteria thrive best in soil well stocked with organic mat ter and tend to crowd out the dis ease causing kinds blankets for turkey hens may prevent serious losses from tears and bruises during the mating season this one was designed by by cornell university t metal nipple bucke the metal nipple bucket wai proven satisfactory for feeding young calves by montana agrical tural experiment station the bick et is six inches in diameter seven inches high and is graduated in pints by indentations in the metal one inch apart which serve as a guide to the feeder in determining the amount of milk to feed the nipple is Ws 2 inches long made of A inch copper tubing soldered secure ly into the bucket as shown it Is rounded at the end with solder 0 precautions advised to prevent hog flu T to 0 keep flu from getting started iowa state college recommends that hogs be brought in at night from hogged down cornfields to keep them from getting chilled overcrowding should be avoided quarters should be planned so that sufficient space and adequate equip ment will be available during bad weather but the buildings should not be shut tight making bogs hogs too warm I 1 |
