Warm mid- to late-fall weather can support hairy vetch emergence and early growth, but these hospitable temperatures can plunge without warning, leaving vulnerable seedlings with too little biomass and insufficient energy supplies left to withstand brutal weather. 149 0 obj<>stream In stands where it occurs, a one year rotation with another crop will generally destroy the residue which harbors the pathogen. This site uses Akismet to reduce spam. Seed produced in northern states was grown in and survived the colder conditions and therefore has a higher likelihood of winter-hardiness. We increased the seeding rates for the dormant- and spring-seeded vetch, from the fall rate of 27 lbs/acre to 33.5 lbs/acre. H��T�N�0}�W�c�P�v'A]$HY(RQ�F�Vٶ�A��M �~���iڲ z�Ǘ�s����,� XTL��K#d,#�� O�R�%O��bs�iJ��Y�_�m�\�����힟_�2`�I(����Y��$䏸�O&�� In these systems, the fall planted legume is either mechanically or chemically killed 2 to 3 weeks prior to planting or it is sprayed at planting. Being more winter hardy than common vetch, hairy vetch has the potential to withstand temperatures in excess of 5F with no cover. Although it will not provide winter ground cover (we made up for this by planting into residue), it provides a sound alternative to spring planting. The next spring, the cereal rye plants provide physical support for the climbing hairy vetch … <<54BC500ECF0210469973DD66ED4C775C>]>> The ideal temperatures for early root growth range from 20° to 25° C (68° to 77° F). 0000008715 00000 n x�bb�g`b``�� �)7 Crimson clovers spring growth can rapidly produce a large amount of biomass. Tendrils form on the ends of the leaves. Aerial Or Surface Seeding: 18 – 22 lbs. Peak N production occurs during flowering around the middle of May when it is induced by 12 hours of daylight. If planting with clovers, seed rye at a slightly higher rate, about 56 lb. Fall temperatures during the experiment year were warmer than usual, so many time-strapped farmers were calling Dave in October to ask if they could still plant hairy vetch. In the southeastern U.S. early cultivars like ‘AU EarlyCover’ can produce three times the dry matter in February as a late maturing hairy vetch. But it is probably better than nothing for the farmer who missed their ideal fall seeding window. 0000005154 00000 n Hairy vetch is an annual or biennial spreading herb with climbing stems growing up to 3 feet long. When hairy vetch is sown in late July or August, the seed germinates readily and the plants generally form a crown before the first snow. For example, when cereal rye and hairy vetch are planted together, the rapid germination and early fall growth of cereal rye help stabilize the soil surface and allow the more fragile hairy vetch seedlings to thrive. For northern farmers who need a more winter-hardy vetch, look for a northern seed tag origin. Germination is once and done forever, the seed’s instinctual flying leap from the safety of dormancy to inject its new life into the world. Ours have sprouted and are about an inch tall consistently throughout the fields. Successful dormant seeding requires that farmers get seeds in the ground before the ground freezes and winter-long snow cover arrives, but not so early that warm weather coaxes a tender sprout from the ground to face the violent elements of winter before it has a chance to put on adequate growth and energy reserves for survival. per acre. Ideal seeding depth: ½–1½". The leaves of hairy vetch are oblong, with 5-10 pairs of leaves per leaflet. The flowers, borne in a dense one-sided spike, are violet and white to rose colored. and 15 to 20 pounds of vetch per acre should be used. 119 0 obj <> endobj With a little creativity, hairy vetch can be worked into almost any rotation, and it’s well worth the effort for the soil enrichment, fertility and weed suppression it provides. x�b```a``-d`e`�fd@ A�P�cC�~ ?I���L�~N����C��RX,D1 Thank you, The trial had begun with a September 1 planting of hairy vetch (an ideal, “normal” date for our region) in some plots, and would end with a spring planting on March 28, 2007. and consumer education. 0000001408 00000 n Ideal temperature for germination is about 68 degrees F. If the soil temperature is too cold, the seed will not germinate. information. Without something to climb, vetch can reach heights of about one foot, but grows much higher with a form of support, such as a fence. Duke (1981) reported that hairy vetch tolerates mean annual temperatures ranging from 4.3-21.1 C, with a mean of 42 cases of 12.0. 0000003119 00000 n It turns out that dormant seeding is a feasible Plan B. 0000001237 00000 n information. A seeding rate of about 20 to 30 pounds of hairy vetch per acre is recommended. “With a little creativity, hairy vetch can be worked into almost any rotation.”. 0000002253 00000 n 0000001856 00000 n Maturing earlier in the spring than hairy vetch allows this species to reach its maximum N production sooner. A later planting date means increased probability of temperatures dipping below these ranges, which means less likelihood that plants will grow enough to conduct adequate energy reserves, through photosynthesis, into their root storage systems. Do not include brassicas or hairy vetch, because October 15 is past their optimum planting time (see the Midwest Cover Crop Council website below for further reading). Dave Wilson, my supervisor at the time and encyclopedia for all things agronomic, got the idea for dormant seeding from hearing stories of farmers in North Dakota who used the practice to get a head start on planting spring wheat, since conditions for driving a tractor in a northern spring can be quite tricky, often excessively wet and muddy. 0000000016 00000 n Do you mean once the temperatures dip below 39 F at night the plant is done growing for the season, or is it after the temperatures dip below 39 F during the day? 0000001697 00000 n They are annuals that can easily be killed when time comes to plant the main crop. However, neither dormant seeding nor spring seeding is likely to yield enough biomass for an effective weed-suppressing mulch in a no-till system.

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