A24*Lancasiw Fanning, Saturday, Fabmary 27, 1993 (Continued from Pag* A2l) shock when the com plant is in the four- to eight-leaf stage. It also seems to be more prevelant in areas with a high soil pH and fertil ity. There may be some potential for a hybrid resistance. The rye residue toxicity prob lem showed stunted growth from a reaction to toxins release from the decomposition of mature rye residues till under. Another signal would be yel lowing of the edges of leaves which signifies a lack of potash. This is because of toxin-stunted root development and the inability to get potash in adequate amounts to the rest of the plant He said a key factor into avoid ing problems from double crop ping with rye is to avoid planting com into fall-harvested’rye. To prevent the problem, take the rye in earlier for ryelage, bum it down, or disc it under before it reaches a height of 14 to 16 inches. He said that on test plots at Penn State, there was a 10-bushel yield difference between com planted after mature rye residue and com planted without rye. Com borers may continue to be a problem in continuous com fields. In 1991, there was a poten tial for three generations of com borers in fields located in south eastern Pennsylvania. During 1992, the state had a high popula tion of com borers. However management strate gies should be more towared alter nating crops in fields as a means to Lapp Comfort Tie Stall • The Lapp Comfort Tie Stall was designed for the cow’s comfort and easy access to the water bowl. • Optional; Pipeline Bracket Rear Trough Divider Cow Trainer Bracket YOU WON T BEAT OUR PRICES & SERVICE ■ ■ - Large Turnout For Dauphin, Lebanon Crops protect the com crop from the borer. The Midwest has a similar prob lem with com borers, but they don’t have the nubmer of varieties of borers as there ate in the East Because of that, farmers can effi ciently conduct pesticide applications. He said that here in the East, the several different varieties of com borer emerge at different times making it difficult to control with pesticide. In the Midwest, the fewer var ieties of com borer emerge closer together and producers can target controls. On the bright side, Roth said that some hybrid com varieties are promising good resistance to borer. Frost damage is not necessarily a permanent problem, Roth said. If the plant is still in the early leaf stage not yet to the six- to eight-leaf stage let it go for several days to give it a chance to come back. He said that while the leaves may brown down to the ground, the growth Up in younger plants is below ground and may not have been killed. After several days, to determine whether or not frost has killed the growth center, split die plant down the middle to the growing point. If it is brown, smelly, or beginning to decompose, it was frost killed. In other directions, Roth said the near and far future holds promise of change. The main direction of • Trough divider designed so that the cows do not steal the other cow’s feed. • Stall partition designed for easier milking. • Water bowl location makes it easier for the cow to drink wat e/. Lapp All Steel Galvanized Windows LAPP’S BARN EQUIPMENT 5935 OLD PHILADELPHIA PIKE, GAP, PA 17527 PHONE: 717-442-8134 Radio Dispatched Trucks Gutter Grate Open House Days March 10. 11. 12 Watch For Details In March 6th Issue change is toward more environ mentally friendly com production, as far as nutrient management, pesticide and herbicide applications. Also, since the larger farms of the Midwest can produce grain com at a low cost, Roth said he sees increasing pressure on local growers who have to deal with more variables and smaller areas of land to be competitive. While not specifically provid ing answers, he said it will become increasingly important to analyze the local situation and consider any advantages over the large growers. One direction producers may want to look is at the specialty corns which may be coming on soon, such as those hybrids which may be more nutritionally com plete and more economical for loc al livestock producers, compared to feeding N 0.2 yellow corn shipped in from the Midwest Roth also said that coming along, though “very hush, hush” in the industry, is a com rootworm resistant high yield hybrid. “I think, in another five years or so, we may see it” Roth said. He said he also looks foward to a hybrid which is resistant to grey leaf spot on which researchers are working. Grey leaf spot is a prob lem with no-till production, he said. Biotechnology is on the way also with com. He said that the seed companies are experiencing a resurgence in interest in some var ieties such as high-oil-yeilding Count on economical and dependable GRAMOXONE’ EXTRA herbicide in your no till or crop residue management prograrg It not only eliminates the early weed flushes that compete with the growth and vield of your corn crop, it gives you these important benefits • Burns down weeds m 24 to 48 hours so vou can plant sooner in the spring ?, W9J ZENECA Int GRAMOXONE'isitraUtnutkofaniaCroupCumpanv GRAMOXONE EXTRA w a restricted use pestiudc 04057171? Always read and follow label directions carefully ' coot. According to Roth, two com panies are joining forces to hybrid ize a high-oil com with a high yield com. Also coming along are varieties for stress tolerance and disease resistance. However, he said they will probably emerge in the Mid west and “trickle” here. Developing com varieties with specific starch compositions also may have promise, Roth said, adding that he based that on con versations with several seed com pany representatives. According to Roth, there are subtle differences in the ability of com starches to be converted to alcohol. He said that because of those differences, a certain hybrid may be able to provide an edge in efficiency in manufacture of alco hol for energy. What is needed is better data bases on how hybrids perform on different conditions, he said. Cur rently the quality of data obtained is too variable. He said that in the future of com growing, tracked farm vehicles may become the field machine of choice because of lower incidence of soil compaction. While con trolled traffic strategies, similar to ridge-till, may work to reduce compaction, its applicability local ly is difficult to foresee because of the irregular field shapes. Roth said that, in the future, satellite mapping of fields for drought stresses may become available. He said he can foresee work on implements and cultiva- EXTRA HERBICIDE IN ALFALFA CONTROLS CHICKWEED AND OTHER WINTER ANNUALS For Gramoxone Extra, consistent control is all in a days work. Gramoxone Extra |g| Waste your weeds Not your money Day tors designed for high residue fanning. And, in addition to the coming improvements in nutrient manage ment, nitrogen testing, composting materials (not for soil value, but for handling) and by-product uses (newspaper for carbon to trap nit rogen), Roth said he sees work to be done in weed control and in biocontrols. For weed control, he said the direction seems to be going to low er rates of chemicals with field specific recommendations and applications based on need. He said that the agricultural community seems to have learned its lesson with developing toxin resistance in plants as a result of what happened with the uses of triazine. Roth said his “crystal balling” also incorporates the increased use of advanced engineering technologies. He said that perhaps video tech nology could be meshed with sen sor technology to come up with a system of driving down the field and having a program respond to positive video identification of a weed by applying herbicide. He said that work is already being done on a knife-like sensor which can detect and map the var iability of nitrogen in the field just by being run through the ground like a chisel. Already here is the use of radar guns to help determine rate of spray applications. • Rainfast in 30 minutes • Effective in warm or cool weather • Tanktmx compatible with preferred residual herbicides, insecticides and fertilizers • Won’t leach into groundwater or leave any harmful residues CONTACT TOUR LOCAL ICI DEALER (Turn to Pag* A 25)
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