Tall wheatgrass barriers and winter wheat response
1974
Aase, J.K. | Siddoway, F.H.
In trials under dryland conditions at Culbertson, Montana, barriers were formed by planting double N.-S. rows (0.9 m apart) of Agropyron elongatum at intervals of 15.2 m; the barriers were 500 m long and became 120 cm tall. Growth and development of winter wheat benefited more from the barriers during a year of average rainfall than during a year of above-average rainfall; grain yields were increased from 2.52 to 2.77 t/ha in 1971 and from 3.48 to 3.55 t/ha in 1972. Data on yield components are given. Effects of the barriers on air tmperature were not consistent. Early-season soil temperatures were higher near the barriers than in an exposed control area. The extent of wind reduction caused by the barriers during the early part of the season, when protection was most essential, was substantial.
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