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Friday, June 22, 2018

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473. Anon.. 1989. Grower boosts yield with conservation practices.. Agrichemical and Equipment News.
Ken Hanloon, Edwall, WA; incorporated strip cropping, grass waterways, dams into his operation; cost was about $3.33 an acre for ten years; his proven yield has risen from 47 to 62 bu/ac; in a 16-18" precip zone; now using P fertilizer in addition to N.

3288. Pan, W.L. and A.G. Hopkins. 1991. Plant development, and N and P use of winter barley. I Evidence of water stress-induced P deficiency in an eroded toposequence.. Plant Soil 135:9-19.
Winter barley was grown at three landscape positions of a representative toposequence in the Palouse region to identify soil factors which limit plant development and nutrient use efficiency in the eroded slope positions. Subsurface P was severely deficient at eroded ridgetop and sideslope positions. Drying of surface soil during the growing season prevented roots from using much surface applied P. This moisture stress-induced P deficiency suggests that deep placement of P is needed to build subsoil P levels for enhanced productivity on these eroded sites.

44. Anon.. 1935. This loss occurs where this is predicted.. WA Farmer, May 16.
Describes the cost per acre of erosion control in the Palouse and discusses the work of the PNW Soil Erosion Experiment Station at Pullman.

321. American Management Systems Inc., Arlington, VA. 1988. The literature review of ecological benefits of the Conservation Reserve Program.. Office of Policy Planning and Evaluation..
Primarily focuses on vegetated filter strip research and the recent ASCS ammendment to include farmland adjacent to water bodies in the CRP. This is an excellent reference for a potentially high payback technique which is in its infancy and which has extensive application for the Palouse.

765. Benson, V., W. Goldstein, D. Young, J. Williams, and C. Jones. 1988. Impacts of cropping practices on nitrogen use and movement.. Proc. Intl. Conf. on Dryland Farming.
Conventional and PALS practices were used as inputs for the EPIC model to simulate the effects of the systems over 108 years on an Athena soil. Total erosion over 108 yr under PALS was 40% less than the conventional system. Nitrogen loss through water was 25% less under PALS than conventional. Percolation loss of N was zero for both systems. Neither system had significant increase or decrease in yields after 108 yr of erosion.

1819. Elliott, L.F. (ed.). 1987. STEEP - Conservation concepts and accomplishments.. Washington State Univ. Publ., 662pp..
A compilation of 48 papers covering: tillage and plant maagement; erosion and runoff predictions; plant design; pest management; socio-economic; integrated systems; technology transfer for cropping systems; 22 technical notes. T: many

1130. Burt, O.R.. 1981. Farm level economics of soil conservation in the Palouse area of the Northwest.. Am. J. Agr. Econ. 63(1):83-85.
Results suggest that intensive wheat production under modern farming practices and heavy fertilization is the most economic cropping system in both the short and long run in the Palouse Area except under low wheat prices. In a sense, topsoil was transformed by modern technology from a primarily stock resource into a largely renewable resource for purposes of practical decisions. The issue of externalities and social costs of sedimentation and pollution in streams has been avoided purposely in this study. But, insofar as soil losses impose these additional costs on society, there exists an incentive for government to subsidize soil conservation measures and/or to penalize farming systems which are relatively erosive on the soil.

1219. Caplan, A.J.. 1986. Cost return and relative soil loss comparisons of alternative tillage systems.. MS Thesis.
Minimum tillage is less expensive than conventional. No-till is most expensive due to high chemical inputs. In the low precipitation zone, minimum till was 1.19 times less expenxive than conventional. Annual peas/wheat in high precip. zone was 1.5 times less expensive with min-till than conventional.

1229. Carlson, J.E., D.A. Dillman and W.R. Lassey. 1981. The farmer and erosion: factors influencing the use of control practices.. ID Agr. Expt. Sta. Bull. #601.
Random survey in the Palouse. Most farmers using some form of conservation. Few using no-till, many interested in it. Groupings of practices included: divided slope, seeding critical areas, uphill plowing, crop mulching, and chisel plowing. All take little capital investment. Poor correlation between practices used and belief by farmer about soil conservation. High erosion potential rotations were dominant. Higher income, higher education, and lower age were associated with higher erosion potential rotations. T: Use of conservation practices; crop rotations in use

1369. Cochran, V.L., R.I. Papendick and C.D. Fanning. 1970. Early fall crop establishment to reduce winter runoff and erosion.. J. Soil Water Conservation, 25(6):231-234.
An experiment was done to measure differences in seeding dates and double disk vs. deep furrow planting on erosion and yield of wheat. The study found that earlier (Sept.) seeded wheat planted at wider spacings (16 in.) with a deep furrow drill had higher yields and less erosion that conventional double disk October seeded wheat. T: Influence of seeding method (deep furrow vs. double disk) on wheat yield.

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