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Search results on 06/19/13
925. Bolton, F.E.. 1983. Strip tillage planting in no-till chemical fallow.. OR Agr. Expt. Sta. Special Report #680, p.45-48.
The results of trails during the last five seasons (1978-82) have shown that the concept of rotary strip-tillage works well in dryland cereal production areas and compares favorably with the current plow-based, stubble mulch, and other no-till systems. Plans are to develope equipment more suitable for commercial use and to demonstrate the strip-tillage system on a wider scale under farmer conditions. T: Tillage system effects on grain yield in eastern Oregon.
1140. Burton, R.L. and E.G. Krenxer. 1985. Reduction of greenbug (Homoptera: Aphididae) populations by surface residues.. J. Econ. Entomol. 78:390-394.
Greenbugs were significantly less numerous under high residue conditions in winter wheeat (V-blade and no-till) versus moldboard plow or disc. Trials in Oklahoma. Related to residue level, not some other effect of tillage. T: tillage X population X date.
743. Bell, M.A.. 1937. The effect of tillage method, crop sequence and date of seeding upon the yield and quality of dryland cereals and other crops in north-central MT.. MT Agr. Expt. Sta. Bull. #336.
T: Climatic data. Yield X crop, tillage, rotation. Green manure effects.
1318. Ciha, A.J.. 1982. Yield and yield components of four spring wheat cultivars grown under three tillage systems.. Agron. J., 74:317-320.
A field study was conducted under three environmental conditions to determine the effects of three tillage systems on grain yield and yield components of four soft white spring wheat cultivars. Average grain yields with no-tillage and conservation tillage were significantly greater than yields using conventional tillage. There were significant differences in yield and yield componenets among the cultivars examined. Significant cultivar X tillage interactions for yield and test weight emphasize the need to evaluate individual spring wheat cultivars for specific tillage conditions. T: Grain yield, test weight, and height of four spring wheat cultivars grown under three tillage systems. etc.
1710. Douglas, C.L., P.E. Rasmussen, L.L. Baarstad and R.R. Allmaras. 1984. Crop residue distribution by combines.. OR Agr. Expt. Sta. Special Report 713, p. 37-40.
Uniform distribution of wheat straw and chaff is necessary for success of conservation tillage programs. Results indicate that: a)standard factory-produced combines distributed straw and chaff unevenly in the field; b)straw-choppers did not automatically improve uniformity of distribution; c)a chaff spreading attatchment on a cylinder-type combine improved distribution significantly; and d)shop modification of flails on a rotary-type combine gave a nearly uniform distribution. Improvements on combines are seriously needed to assure the uniform straw and chaff distribution so necessary for successful adoption of conservation tillage systems. T: Straw distribution by cylinder and rotary combines.
2597. Herrman, T. and M.V. Wiese. 1984. Foot rot control in winter wheat using tillage, rotation, variety, fungicide, and nitrogen variables.. ID Agr. Expt. Sta. CIS #737.
Worst infection with conventional tillage; Stephens a more resistant variety; 3 yr rotation had lowest level, also lower levels with peas versus lentils; fungicides increased yields 4-6 bu/ac; no effect of level of N fertilizer; evidence from other areas that green manure could reduce infection levels; late fall tillage reduces infection; reduced tillage intensifies other diseases such as Cephalosporium stripe and Fusarium root rot. T: disease incidence by tillage, variety, fungicide.
3705. Koehler, F.E.. 1979. Soil fertility management under no-till and minimum tillage systems.. Proc. 13th Ann. Fertilizer Conf. NW, Spokane, WA, July 1979.
Slower residue decomposition, cooler soil temperature under reduced tillage; mostly effects N,P,S; best results with banded fertilizer; more weed growth with broadcast fertilizer; spring wheat most sensitive to fertilizer placement. T: fertilizer X yield, placement
4086. Massee, T.W. and H. McKay. 1979. Improving dryland wheat production in eastern Idaho with tillage. ID Agr. Expt. Sta. Bull. #581.
Stubble increased snowcatch and wheat yields; fall chiseling increased water infiltration and wheat yields; burning straw decreased yields after 6 yrs; row seeding a response up to 50 lb/ac N; research done at Tetonia; early fall seeding gave highest potential yield, but more disease and weed problems; annual cropping is possible when stored soil moisture exceeds 3 1/3 feet. T: tillage X moisture, yields
4152. McCall, M.A. and H.M. Wanser. 1924. The principles of summer fallow tillage. WA Agr. Expt. Sta. Bull. #183.
This is the results of experiments carried out at the Adams station near Lind, WA, in the 15" rainfall zone. It discusses moisture and the moisture - nitrate accumulation relationship. No discussion of OM or erosion related to summer fallow is included. Nitrate accumulation is dependent on the maintenance of suitable moisture and temperature conditions." "Early spring plowing gives the largest accumulation of nitrates. Disking is less efficient at promoting nitrification."
4827. Nelson, E.. 1908. Dry farming in Idaho. ID Agr. Expt. Sta. Bull. #62.
Caldwell, ID - better sites yield 30-40 bu/ac wheat, even 60; alfalfa - several cuttings; drier sites yield 20-30 bu/ac; in Utah, 1" of rain stored in soil produces 2.5 bu wheat; summerfallow necessary; eastern WA - late spring plowing with early disking and harrowing is effective weed control; "slicker" - homemade tool in Columbia Basin to kill weeds; Subsurface packer - after plowing, increased yields in Columbia Basin 25%. Idaho soils - short on N and humus; alternate crop possibilities: milo, sorghum, field peas, alfalfa, grass; also spring emer (speltz), hulled wheat (adapted to arid conditions); WW vs. SW has 4-5 bu/ac yield advantage.