Development of a Method for Predicting the Optimum Harvest Time by Using the Falling Number in Winter Wheat(Quality and Processing)

[摘要] Wheat is expected to be harvested at the optimum time for producing grains that have a high maximum viscosity of amylogram in areas that suffer severe rain damage. Research was carried out to develop a simple and accurate method to predict the optimum harvest time. A positive relationship between the accumulated temperature during ripening and the falling number of grains during the viscosity increment period was observed at several fields in Hokkaido for two years for different cultivars. Using this relationship, we would estimate the optimum harvest time at which the falling number of grains was 300 sec or more. The goodness of fit of predicted values to observed values was significantly high in many locations. Therefore this method could be adapted in growers' fields for harvesting high-quality wheat grains.

[学科分类] 农业科学（综合）

[关键词] Accumulated temperature;コムギ;Falling number;子実水分;Moisture content;収穫適期;Optimum harvest time;積算気温;Winter wheat;フォーリングナンバー値