WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Wednesday, August 15, 2018

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Search results on 08/15/18

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.

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.

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

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.

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