VERNON – With more than 3 million acres of wheat in north Texas, 50 percent or more of which is grazed by 1 to 2 million head of cattle, it is important to look at tillage practices and their effect on forage production, said a Texas AgriLife Research expert.
Dr. John Sij, AgriLife Research agronomist at Vernon, has been studying nitrogen response and forage production in relation to tillage practices at the nearby Smith-Walker research farm, where grazing research is conducted under commercial conditions. "When talking about tillage, we have to look at environmental conditions," Sij said, "including frequent droughts, high winds and temperatures, highly erodible soils, low yields, low production inputs, low returns and intense rainfalls."
Conventional tillage can sometimes be excessive and cause moisture loss as well as lower organic matter, he said. Severe wind and water erosion can also occur under conventional tillage, resulting in dust storms and low visibility.
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