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You will just keep experiencing the same symptoms – surface crusting, ruts, wet spots, stunted growth, lost yield, and many others – until you address the underlying cause of the problem, which is poor aggregate formation and the lack of living roots. We want a mix of both warm- and cool-season cashcrops and cover crops in the rotation.
The non-dormant alfalfa planted as an annual can yield three cuttings as a cashcrop and then winter-kill. Researchers have found that the annual alfalfa leaves enough nitrogen in the soil for a barley or corn crop the next year.
His soybean and wheat crops were also impacted. But there was one crop that suffered less. “It It doesn’t take a whole lot of rain to make a good yield for the sorghum crop,” said Rendel, who plants about 1,000 acres of grain sorghum each year on his 5,000-acre farm. Sorghum] helps offset our risk,” he said.
Grover established a peach orchard in 1935, and cultivated grain and raised livestock until the late 1970s. With tobacco as his principal cashcrop, Arthur needed to purchase fertilizer before December and prepare the land for planting by February or March. So far, hes pleased with the new crop. Im building the soil.
Some farmers and researchers like those running the Wisconsin Integrated Systems Cropping Trial are developing increasingly sophisticated polyculture with two or more crop species in the same field at the same time. Rotating crops also significantly reduces pests and diseases.
The cost can be prohibitive, and it can be tricky to fit them into a conventional row-cropping system. A 2022 Stanford University satellite study reported that although cover cropping reduces erosion and improves water quality, it also causes significant yield hits for corn and soybeans.
One way to reduce agricultural chemicals is planting cover crops in the Fall after the cashcrop is harvested. Winter cover crops could mean using less fertilizer and herbicide in the Spring. The type of herbicide depends on which cover crop is used and the timing for spring planting.
A review from earlier this year found that only a third of published studies in which researchers compared fields that were cover-cropped with those that weren’t reported significant gains in soil carbon. And a study published last month illustrated one major reason why farmers may be reluctant to plant cover crops.
One stop showed off a soybean yield trial. In fact, the two practices that dominate current markets—no-till and cover crops—require herbicides to succeed in the way they’re practiced on most commodity farms. Farmers use herbicides to kill weeds that they could otherwise till under and to kill cover crops before planting a cashcrop.
If tobacco built the farm over generations, it’s no longer a dependable source of the kind of income his grandfather earned decades ago, much less its best cashcrop. The yield required to make it work is becoming, you know, nearly a record crop every year,” said Brandon Batten, a farmer in Four Oaks, North Carolina.
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