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Rotation
Buckwheat is not usually included in a regular rotation. It is heavy feeder of mineral fertilizers, especially phosphate, and this should be considered in fertilizing the crop following buckwheat. Buckwheat stubble adds very little organic matter and leaves the soil loose and more subject to erosion than small grain crops. Avoid planting buckwheat on canola, mustard or sunflower ground because these crops readily produce volunteer plants which are impossible to control in growing buckwheat.
Buckwheat drops seed readily before harvest and volunteer growth often occurs in the following crop. A grower should be careful to select a crop that has buckwheat control options available. Buctril, Bronate, Banvel, Harmony Extra, and Express herbicides easily control volunteer buckwheat in small grain. Growers should select a crop in which these type of herbicides are labeled and can be safely used.
Disease problems are rarely encountered in buckwheat. As a precaution, however, a minimum or three year should be left between successive buckwheat crops in a rotation.
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