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Estimating Winter Wheat Grain yields Wheat growers generally need to calculation wheat returns in the spring in bespeak to do decisions about potential recropping. This NebGuide discusses three techniques of estimating winter wheat yield.

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Drew J. Lyon, expansion Dryland Cropping solution Specialist Robert N. Klein, expansion Cropping equipment Specialist

Method 1Method 2Method 3Determining Winter Survival

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Figure 1.A dry summer led to a loose seed bed and poor wheat stands the complying with spring. Wheat stand and vigor were ideal in the wheel tracks wherein soil was firmed at planting.
The winter wheat-growing regions of Nebraska are characterized by huge fluctuations in weather conditions, an especially temperature and also precipitation. Winter wheat frequently suffers as a result of this climatic fluctuations (Figure 1). Wheat growers commonly need to calculation wheat returns in the feather in order to decide about potential recropping. Identify a reasonable calculation of wheat yield permits growers come predict if that is in their finest interest to ruin their wheat and also plant a summer crop or leaving the wheat for harvest. Prior to making such a decision, growers have to be conscious of any type of restrictions applied by government programs, chop insurance, or vault herbicide use. This NebGuide will discuss three methods of estimating winter wheat yield. Each technique relies on several assumptions that may not be accurate for every season or situation. These presumptions presume the soil moisture and also nutrients room adequate, and also that weeds, insects and also diseases room not affecting yields. Added to the hesitation of yield approximates is wheat’s ability to compensate for alters in the environment.

Method 1

The first table (Table I) is basic to use; however, it depends on several assumptions that are forced to make a yield estimate in the autumn or early spring former to extensive tillering or stem elongation. These presumptions included: that wheat plants, on the average, develop around five heads; the each head, on average, develops about 22 kernels; and that there space an average of 16,000 kernels per pound. Late-planted wheat and wheat seed that perform not germinate till later because of dry conditions will tiller less and have fewer heads.To use Table I, count the number of plants every foot that row. It is ideal to usage at the very least 5 feet of row in in ~ least five sites within the field and also calculate the average number of plants every foot of row. If the stands room uneven, for example the was standing is much better or worse in the wheel tracks, make certain your percentage of samples in these areas accurately to represent the proportion of these locations in the entirety field. Situate the obelisk in the table that corresponds to your average number of plants per foot that row and then move down that tower until the intersects v the row matching to your heat spacing. This is your approximated yield.Table I.

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Approximated wheat productivity potential.