Browse on keywords: tillage seeding
Search results on 03/21/18
754. Bennett, W., D. Pittman, D. Tingey, D. McAllister, H. Peterson, and I. Sampson. 1954. Fifty years of dry land research (at the Nephi Field Station).. Utah Agr. Expt. Sta. Bulletin 371.
Summarizes the results of 50 yr of research at the Nephi Field Station in cental Utah. Discusses climate - spring rainfall crucial, fall emergence of wheat correlated to high yields. Ave. annual precipitation is 12.65 in. Tillage experiments - fall verus spring plowing did not affect yields, while late spring plowing lowered yields. Plowing to 8" depth increased yields by 8% compared to plowing at 5". Yields were higher with plowing and no further cultivation on fallow (weeds controlled) than with normal fallow tillage. Yields were poor with stubble mulch. Fertility: A pea green manure increased wheat yields both in the short and long term. Wheat yields were sometimes depressed by green manure, due to moisture shortage or N immobilization. Manure application increased wheat yields in all treatments, and was more beneficial in wet years. N fertilizer increased wheat yields and protein. Burning straw increased yields for 30 yr, then they began to decline. No response to P. Wheat-fallow gave the greatest yields and net returns, and wheat was the only crop distinctly benefitted by summerfallow. Alfalfa depressed the following wheat yields but improved soil fertility. Continuous wheat yielded less than 40% of wheat-fallow. Wheatgrasses showed potential for forage and seed. Spring wheats yielded 60% of winter wheat. Only 32% of rainfall was stored as soil moisture in summerfallow. Overall, yields were low (15-25 bu/ac) and treatment differences were small (1-3 bu). These results predate the semidwarf wheat varieties.
4565. Morrison, J.E. (and others).. 1988. Conservation planter, drill and air-type seeder selection guideline.. Applied Engineering in Agric., 4(4):300-309.
This guideline contains descriptions of machines used for planting in conservation-tillage conditions and of soil-engaging components for those machines. The user can then match those specifications with available commercial machines or modify existing machines by adding the desired components. T: many figures.
6711. Stephens, D.E., H.M. Wanser and A.F. Bracken. 1932. Experiments in wheat production on the dry lands of Oregon, Washington, and Utah.. U.S.D.A. Technical Bull. #329.
Experiments in wheat production on the dry lands of Oregon, Washington and Utah
8057. Welty, L.E.. 1981. Sod-seeding establishment - five years experience.. West. Soc. Crop Sci. Abstr. p. 11.
8364. Schirman, R. and C.L. Canode. 1979. Direct seeding of annual field crops into bluegrass sod.. WSU Agr. Expt. Sta. Bull. XB 876, Pullman, WA.
Glyphosate (Roundup) was applied at rates of 1-1.5 lb/ac killed 85-90% of an established bluegrass stand and allowed direct seeding of winter wheat, spring wheat, peas, or lentils without any tillage. Burning of bluegrass residue increased vigor and yield of wheat but had inconsistent effects on legume yields. Success in killing the sod was dependent on active growth, which is influenced by weather and the varieties used. These factors should dictate the herbicide application date.