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Saturday, September 22, 2018

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11126. Rasmussen, V.P. and R.L. Newhall. 1991. Dryland tillage demonstration /research plots.. Agri-hint Series 109, Coop. Ext., Utah State Univ., Logan..
Seven cropping systems are being compared to determine fallow efficiencies and erosion potentials. The annual crop system outyielded the crop-fallow systems in the two years of study.

4629. Muehlbauer, F.J.. 1983. Legumes in cropping systems in the Pacific Northwest and California. p. B14-18.. Rreport of the Work-Planning Conf. on Legumes in Conservation Tillage Systems..

5725. Rasmussen, V.P. and R.L. Newhall. 1989. High residue conservation tillage increases soil moisture and profits. IN: Utah Agricultural Statistics, 1989. p. 121-124. Utah Agricultural Statistics Service, Salt Lake City, UT.
Three years of data are reported for several locations comparing a number of consevation tillage and cropping systems. The no-till and chemical fallow were better both for conserving soil and moisture, and generated the highest net returns. The chem fallow conserved about 1-2 inches of soil moisture. Erosion under the no-till chem fallow ranged from 1-5 T/ac compared to 17-30 T/ac with conventional tillage. The study included tests of continuous cropping, but more years are needed to make an economic comparison.

10406. Pan, W.L. and A.G. Hopkins. 1991. Plant development, and N and P use of winter barley. II. Responses to tillage and N management across eroded toposequences.. Plant Soil 135:21-29.
Winter barley was grown at three landscape positions of a representative toposequence in the Palouse region. Direct drilling (no-till) into crop residues increased yields by 16% over conventional tillage at an eroded ridgetop position, despite early season growth inhibition. Tillage system had no effect on grain production at other landscape positions that featured higher overall yields. Short-term benefits of no-till systems may be most evident at slope positions where water use is most limited.

10844. Tanaka, D.. 1989. Spring wheat plant parameters as affected by fallow methods in the northern Great Plains.. Soil Sci. Soc. Amer. J. 53:1506-1511.
Chem fallow was compared to stubble mulch and reduced tillage in a spring wheat-fallow rotation. Average surface residue prior to planting was three and two times greater than reduced tillage for chem fallow and stubble mulch, respectively. Chem fallow plots stored more soil water, but this did not increase yield during the study. During years of crop stress resulting from limited soil water, chem fallow may produce higher yields than stubble mulch. Grain water use efficiency was greater for wheat grown on stubble mulch plots than on chem fallow plots.

11048. Kirschenmann, Fred. 1992. Eradicating field bindweed: tillage, rotation knock out weed.. Northern Plains Sustainable Agriculture Society Newsletter, Jan. 1992, p. 5..
A complex rotation combined with timely tillage has been successful in controlling field bindweed and Canada thistle on a North Dakota farm. A five year rotation of oats/sweetclover-sweetclover green manure-spring wheat-buckwheat-winter rye has worked well.

11136. Rasmussen, V.P. and R.L. Newhall. 1991. Dryland tillage demonstration/research plots.. Agri-hint Series 91-111, Coop. Ext., Utah State Univ., Logan.
Continuous winter or spring wheat did not yield as well as the chem-fallow or conventional systems.

11146. Rasmussen, V.P. and R.L. Newhall. 1991. Dryland tillage demonstration/research (FSA compliance) plots.. Agri-hint Series 91-108, Coop. Ext., Utah State Univ., Logan.
Chem-fallow systems showed better profitability and lower soil loss than conventional systems. A deep furrow drill did not perform as well as a Yield no-till drill.

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