You are here
Planting Cover Crops on Prevent Plant Acres?先读这个。
伯特·斯特拉耶，cover crop lead for LaCrosse Seed's west territory,他说，对于种植者来说，线上金沙赌城网站思考他们心中的目标对于覆盖作物能够实现什么是很重要的。是否控制杂草，erosion control,taking care of moisture,或者用作饲料，找出优先事项。“然后我们可以回填时间线并确定种植时间，对种植者来说有什么意义？and what species provide a benefit," Strayer says.
The benefits of a cover crop during the prevent-plant period are numerous and are listed below.然而，growers need to answer these questions first,他补充道：
- What will you rotate into next year?下一个经济作物可能决定你选择的覆盖作物是越冬还是越冬。
- How will you seed the cover crop you select?Will you broadcast the seed or can you drill it?
- 在申请预防植物之前，你使用了什么除草剂或肥料计划？如果你使用除草剂，确保盖子兼容。如果你施肥，try to choose a cover crop that can cycle that nitrogen so it is not lost.
- 要灵活。With the increase in demand for cover crop seed this spring,supply of popular species is limited.
Avoid Fallow Syndrome
首先，consider fallow syndrome. That's when corn planted following cropland that has been idled for a season gets off to a slow start and shows symptoms of phosphorous deficiency.这是因为闲置的田地大大减少了水泡丛状菌根的数量，或VAM，which has a symbiotic relationship with corn and small grains,according to a 2016 report from the University of Missouri.
“菌根在玉米根周围生长，帮助根吸收营养，primarily P and Zn.The mycorrhizae benefit by accessing the sugars from the root system of the host plant.随着植物长出缺磷症状，they have remained pale and stunted in the most impacted fields," writes Greg Luce,米佐植物科学家。
简而言之，having some kind of crop growing on the prevented-plant acres can counteract fallow syndrome.Caution: Not all cover crops can thwart fallow syndrome,卢斯补充道。像芜菁和萝卜这样的芸苔属植物，不会寄生vam。If used as a cover crop during this prevented-plant period,它们需要与寄主覆盖作物混合；typically grasses like cereal rye,wheat,or oats.
思考根源，不是铁。"If you think you'll remove water by tillage,it won't work," says Lee Briese,Centrol的农学家，股份有限公司。，双谷，明尼苏达州。
"Digging" out soil water via tillage can lead to more problems,like compaction or creating a hardpan.However,planting a blend of cover crops will prompt root growth of varying depths and canopy,helping to prevent compaction and hardpan.
确保等待种植覆盖作物，直到田地条件适合为止，布赖斯警告说。Planting into muddy conditions is asking for trouble.
"Telling farmers to do nothing is the worst thing you can tell them," he admits.But waiting for good planting conditions – as difficult as that may be to do – is worth the headache.
覆盖作物线上金沙赌城网站的一个重要属性是抑制杂草的能力。耕作是一种短期的抑制工具，but cover crops offer seed-long suppression,Briese says.
他解释说：“耕作不会留下持久的残留。”"Tillage will kill a lot of weeds,但四天之内，他们会回来的，“覆盖作物通过覆盖地面和竞争幼苗来抑制杂草，因此，providing long-lasting weed control and serving as another mode of action.
诀窍是，fit cover crops to the weeds you need to control and use the cover crops as one of the layers of protection.Start with a clean field and plant cover crop species that outcompete the weed species you target.
For instance,比如说你用愈伤组织除草剂来打阔叶树。A cover crop of oats in combination with Callisto can help provide season-long control of weeds like waterhemp and Palmer amaranth.Because it's a grass species,the fallow syndrome shouldn't apply next year.That's just one example,但是你的推广代理，覆盖作物种子经销商，or resources from the中西部覆盖作物委员会可以帮助你确定覆盖作物的组合，herbicides,目标杂草种类适合你的操作。
This cannot be emphasized enough.
在决定是否种植或种植什么之前，"we recommend growers are in very close contact with their insurance provider," emphasizes LaCrosse Seed's Strayer.“我们不想假设我们所建议的一切都符合要求。首先，你必须服从。”
For instance,growers who seek to plant a cover crop species,or multiple species,on prevent-plant acres – with the goal to produce forage – cannot harvest that crop before November 1.对于任何可能产生谷物的谷物作物也是如此。一旦种植者接受了保护植物的赔偿，覆盖作物不能从这些土地上获得经济利益。