The effect of cloddiness of soils on their susceptibility to wind erosion
1944
Van Doren, C.E.
Since the percentage of soil aggregates, approximately 2 mm or less in size, as determined by this method, is the critical point determining the susceptibility of soils to wind action at the ground velocities normally encountered, the process of sieving could be reduced to one sieving to separate the two categories of clod size. This would greatly reduce the amount of time and labor needed to sieve the samples, making it possible to run a great many more samples. The complete sieving can be used where a study of detailed change in clod structure is desired. Analyses of clod structure carried out before and after tillage and seeding operations throughout the season gives a good evaluation of the effect of the various tillage and seeding implements on clod structure. These studies have a practical application in providing a means whereby the susceptibility of land to wind erosion can be determined in advance of the blow season and measures taken to prevent wind erosion. Usually much less damage is done to the land and crop where blowing is prevented rather than where emergency measures are taken after blowing has started.
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