The optimal seeding rate for oats is 96 pounds or 3 bushels per acre, whereas spring barley and spring wheat do best at 2 bushels per acre. “This substantial difference strongly suggests the importance of a variety-specific seeding rate recommendation,” Ransom says. If so, planting begins a few weeks earlier, according to Stewart Duncan, agronomist at the Kansas State University Northeast Area Extension Office, who recommends a seeding rate of 60 to 75 pounds per acre. A seeding rate of 149.5 lbs/acre will be needed to produce 30 to 35 plants/ft2 based on 85% germination. Generally, this is equivalent to approximately 1 bushel rye seed/acre for crop production. Varieties differed in their response to seeding rate. Example: 25 (plants per sq. Not only does the old bushels per acre rule-of-thumb not take into account a targeted plant population (the cornerstone of the crop year), it also ignores seed lot differences of size and weight. Table 2. Copyright © 2021. WestBred seed suppliers have access to new tools to determine seeding rate based on wheat seed product, seed size and density, geography, planting date, and production practices. Once planting begins, make sure the seeds are 1 to 1½ inches in depth. FieldView™ is a trademark of The Climate Corporation. This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. These studies have also shown that regardless of the year, yields did not increase above a spring rate of 120 lb N per acre. Lines and paragraphs break automatically. If you broadcasted the seeds, use a cultipacker to pack the ground after seeding. Seeding different varieties at the same pounds per acre can result in significantly different plant populations. Seeding rates can be reduced for products that tiller well and are planted timely in good soil conditions. The best seeding rate will vary by variety and soil’s productivity. Alpha Lattice with three replications. It’s time to plant small grains. Conversely, a decreased seeding rate results in a decreased number of seeds per head and larger seeds. The optimum stand of winter wheat is 900,000 to 1,000,000 plants per acre or 21 to 23 plants per square feet. Lower seeding rates can be used on most productive ground; higher rates are needed on moderate to poorer quality soils. Averaged across all environments and varieties, the highest yield was obtained at the 1.40 million seeds per acre seeding rate. All seed was treated, but the chemicals and rates used varied according to the preferences of the originating organization. In addition to these agronomic reasons, calculating optimal seeding rates is important to farmers for economic reasons. Normal seeding rates are considered to be 1.5 million seeds/acre on clay loam or lighter soils, and 1.8 million seeds/acre on heavy clay soils. Note that it is important to determine kernel weight and know the germination status of your seed. 4. Suggested planting rates for Kansas crops. Tall wheat products, fields with high yield potential, and over seeding can lead to plants susceptible to lodging. More information at http://www.climate.com/disclaimers. Broadcasting seeding often results in more uneven stands & lower yields than drilling Source: Crop Quest By Stan Schield, Division Manager, Montezuma, Kan. As producers begin to make preparations for fall seeding of winter wheat, one of the decisions to be made is how much seed to plant per acre. A variety that tillers well requires a lower seeding rate than one that does not. If you choose treated seed, make sure the seeds are adequately covered. Areas with more moisture may use a heavier rate and adjusted planting dates. Number 8860726. It requires 50% more seed per acre than drilling small grain. Also remember to adjust your planter. Lodging increases chances for disease, complicates harvest, and negatively affects yield potential. WestBred seed suppliers running the ConnectIN Wheat Insight System can offer seed counts for each product along with Optimal Seeding Rate recommendations. All spring grains should be sown with a grain drill to a depth of 1 to 1-1/2 inches. So this 50-lb. Similarly, if wheat is planted early, seeding rates must be adjusted down, by at least 25% if seeding 10 days ahead of normal. A 2014 Kansas State study of seed treatment samples indicated 42% of the samples had inadequate seed coverage. Per cent survival is the percentage of seeds planted that germinate and emerge into vigorous seedlings. Dryland fields in the Panhandle can have their seeding rate lowered to 45 lb/acre. OSU recommends a 60 lb/acre seeding rate for grain-only production when planted during that optimal mid-October time. In the range of acceptable seeding rates, shorter wheat products with strong straw can be planted at higher seeding rates with less risk of lodging. Tillering can be manipulated with nitrogen applications. Weed management also depends on tiller scouting as some labels require tillers to have two to three leaves before herbicide application. 28 -30. increase seeding rate by 400,000 seeds/ac above your normal seeding rate. If drilling, approximately 75 pounds per acre should do. Clearfield® is a registered trademark of BASF Corporation. Seeding Rate (lbs/acre) = ((desired stand in plants per acre)/(1-expected stand loss))/((seeds per pound)X(% germinaton)). Although the varieties used in this study were not the most recent or most popular varieties, they had known traits and genes that helped the researchers help us develop models to predict an optimum seeding rate for new varieties with those traits and genes. “These findings suggest that in higher yielding environments (i.e. Consult your seed brand representative for more information on products best-adapted to your geography and the specific agronomic needs of your farm. 2. Wheat has traditionally been planted by the pound. For best results, oat should be drill-planted on a conventionally tilled seedbed at a seeding rate of 80 to 100 pounds of seed per acre. Please switch to a supported browser: Chrome, Edge, Firefox, Safari. Attaining a consistent seed depth is important in order to increase the probability of … If broadcasting, do so at a rate of approximately 100 pounds per acre. The expected stand loss can vary between 10 and 20 percent, depending on seedbed conditions. All rights reserved. >65 bu per acre), seeding rates need not be increased to achieve higher yields, but in fact, they should probably be reduced slightly,” Ransom says. The heights of wheat products can vary from short and medium-short to tall. The optimum seeding rate for Briggs, a variety with weak straw, was 1.02 million seeds per acre, while the optimum seeding rate for Rollag, one of the most lodging resistant varieties in the study, was 1.84 million seeds per acre.”. Seeding rates are more accurate and the likelihood of achieving the targeted plant stand is improved when the rate is calculated based on the seeds per pound for the specific seed lot being planted. "This research showed a seeding rate of 1.2 million pure live seeds (PLS) … Germination and mortality are based on seed tests. Evaluating seed product yield test data from two or more years and multiple locations can provide a more accurate indication of the potential performance of each wheat product. can be flexed to reach the same yield with fewer plants. Germination should be found on the seed tag. For a broadcast situation that’s going to look like 37 to 48 seeds per square foot. Registered in England and Wales. 1.25 - 1.30. “Wheat intended for pasture should be seeded at a high rate — about 120 pounds of seed per acre — and planted early,” says Jim Shroyer, Kansas State University Extension agronomist. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. In general, an initial stand of 30 to 32 plants/ft2, which is about 1.3 to 1.4 million plants/acre, maximizes yield potential. Seed Cleaning and Germinability. All rights reserved. As an example, Albany, which tillers profusely at low seeding rates, had an optimum seeding rate across all environments of 1.06 million seeds per acre, while Kuntz, the variety that produced the lowest number of tillers at a given seeding rate in the study, had an optimum of 2.03 million seeds per acre. Seeding rates tailored to wheat products can help farmers maximize the return on their seed investment while helping mitigate risks associated with under or over seeding. Five things that Joel Ransom, NDSU Extension agronomist, says the researchers learned were: 1. Ask your wheat seed dealer about seed counts for the wheat product you purchase. 2. It becomes quickly apparent that each lot planted at 60 pounds per acre would give vastly different plant populations. 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