The effect of northern climate conditions on sprouting damage of wheat grains.
1991
Karvonen T. | Peltonen J. | Kivi E.
Three spring wheat varieties were used as test material in studying th effect of climatic factors on sprouting damage in grains. It seemed that an average relative humidity of over 80% and a maximum daily temperature of below 13 deg C during grain filling decreased the falling number level to below 120 (commercially acceptable starch quality). Conversely, if the average relative humidity fell below 70%, average maximum temperature exceeded 16 deg C and global radiation exceeded 12 MJ m-2 d-1, it indicated falling number over 230 units (bread wheat quality). Moreover, the possibility of predicting starch quality with multiple regression was studied. Analysis showed that multiple regression functions were unreliable for prediction. The basic weakness was the fact that the functions of multiple regression reflect only a part or none of the mechanisms determining starch quality.
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