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Managing Cover Crops Profitably - Valley Crops Home

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Erosion Fighter. Rates how extensive and how<br />

quickly a root system develops, how well it holds<br />

soil against sheet and wind erosion and the influence<br />

the growth habit may have on fighting wind<br />

erosion.<br />

Weed Fighter. Rates how well the cover crop<br />

outcompetes weeds by any means through its life<br />

cycle, including killed residue. Note that ratings<br />

for the legumes assume they are established with<br />

a small-grain nurse crop.<br />

Good Grazing. Rates relative production, nutritional<br />

quality and palatability of the cover as a forage.<br />

Quick Growth. Rates the speed of establishment<br />

and growth.<br />

Lasting Residue. Rates the effectiveness of the<br />

cover crop in providing a long-lasting mulch.<br />

Duration. Rates how well the stand can provide<br />

long-season growth.<br />

Harvest Value. Rates the cover crop’s economic<br />

value as a forage (F) or as a seed or grain crop (S),<br />

bearing in mind the relative market value and<br />

probable yields.<br />

Cash Crop Interseed. Rates whether the cover<br />

crop would hinder or help while serving as a<br />

companion crop.<br />

CHART 3A: CULTURAL TRAITS<br />

This chart shows a cover crop’s characteristics<br />

such as life cycle, drought tolerance, preferred<br />

soils and growth habits. The ratings are general<br />

for the species, based on measured results and<br />

observations over a range of conditions.Choice of<br />

cultivar, weather extremes and other factors may<br />

affect a cover crop’s performance in a given year.<br />

Column headings<br />

Aliases. Provides a few common references for<br />

the cover crop.<br />

Type. Describes the general life cycle of the crop.<br />

B = Biennial. Grows vegetatively during its first<br />

year and, if it successfully overwinters, sets seed<br />

during its second year.<br />

CSA = Cool-Season Annual. Prefers cool temperatures<br />

and depending on which Hardiness<br />

Zone it is grown in, could serve as a fall, winter<br />

or spring cover crop.<br />

SA = Summer Annual. Germinates and<br />

matures without a cold snap and usually tolerates<br />

warm temperatures.<br />

WA = Winter Annual. Would be more cold-tolerant<br />

and would require freezing temperature or<br />

a cold period to set seed.<br />

LP = Long-lived Perennial. Can endure for<br />

many growing seasons.<br />

SP = Short-lived Perennial. Usually does not<br />

persist more than a few years, if that long.<br />

Hardy Through Zone. Refers to the standard<br />

USDA Hardiness Zones. See map on inside front<br />

cover. Bear in mind that regional microclimate,<br />

weather variations, and other near-term management<br />

factors such as planting date and companion<br />

species can influence plant performance<br />

expectations.<br />

Tolerances. How well a crop is likely to endure<br />

despite stress from heat, drought, shade, flooding<br />

or low fertility.The best rating would mean that<br />

the crop is expected to be fully tolerant.<br />

Habit. How plants develop.<br />

C = Climbing<br />

U = Upright<br />

P = Prostrate<br />

SP = Semi-Prostrate<br />

SU = Semi-Upright<br />

44 MANAGING COVER CROPS PROFITABLY

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