Oilseed Radish is best known for its deep tap root, quick emergence and rapid growth. It is primarily used to break up soil compaction, capture residual Nitrogen, suppress weeds, increase water infiltration, and increase soil biology.
Oilseed Radish has 2 types that are being used as cover crops, they are: Daikon and Forage. The Daikon is the most popular, due to its large taproot. The Forage type has lush top growth but a smaller and more branching root. The fodder from all types of radishes provides good forage, similar to turnips. It's best to plan a single grazing period, since it does not tolerate traffic well.
If seeded in late July to Sept, root growth to a depth of 16+ inches is possible before a killing frost. Radish requires 8-10 weeks of 60 degree temperature to achieve optimum growth. The plant will die when temperatures reach 28 degrees F. After a killing frost, the plant will decompose rapidly, leaving the ground bare by spring.
Radishes can be seeded alone or in combination with other seeds. The most common mixes include: winter peas, oats, annual ryegrass or cereal rye. Since radishes grow so fast, it's best to seed the various mixes by drilling in alternate rows. Also, since radishes decompose over winter, the addition of some of the grass species is recommended for spring erosion control.
Enricher Radish and oats seeded early August.
This gives the benefit of the radish along with added bio mass production of the oats, plus the
added benefit of spring erosion control. This mixture is ideal for the first time cover crop user since they will die over winter.
Enricher Radish has excellent levels of glucosinolates. Glucosinolates is one of the mechanisms that radish uses to help control several nematode species. When planted with Bounty Annual Ryegrass, there is the double approach to controlling most nematodes including soybean cyst nematode. Annual ryegrass alone, when properly managed gives significant reduction in soybean cyst nematode and Bounty Annual Ryegrass has shown to be one of the best varieties of annual ryegrass for winter survival. The earlier one plants either or both cover crops, the better the chance one has of controlling the nematodes.
Seeding Date: Late July to Sept
Seeding Rate: Drill - 8-12 lbs/ac
Broadcast - 15-18 lbs/ac
Seeding Depth: 1/4-1/2"
This picture shows the competitiveness of
Enricher Radish in weed control. Note the weed
concentration in the wheel track vs the solid
stand. Weeds just can't compete in a good radish stand.
Enricher is on the left, Competitor's radish on the right. The radish were planted on 9/1/2010 in Effingham, IL. August rainfall was .60", September 2.25" (most at one time was .50"), October .45" and November .80".
This is a popular mix of Enricher Radish and Austrian Winter Peas that provides deep rooting and compaction reduction along with significant Nitrogen production for the following crops. For best results drilling in individual rows is recommended. be sure to inoculate the peas.
Larger radish are Enricher, smaller radish are a competitor's under the same growing conditions.