WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Saturday, October 20, 2018

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Search results on 10/20/18

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.

1962. Fenwick, H.S., R.L. Forster, and H.W. Homan. 1979. Seed treatment of cereals for diseases and insect control.. ID Agr. Expt. Sta. CIS #484.
Discusses wheat, barley, and also oats; cereal smuts, seedling blight; insects; lists chemical controls.

2664. Holbert, S., L.E. Sandvol, B. Stoltz, and R. Johnston. 1988. Russian wheat aphid.. ID Agr. Expt. Sta. CIS #817.
First found in Idaho in early 1987; spread throughout state that season; infests wheat, barley, triticale, other grasses; volunteer grain an important host; aphid secretes a toxin that causes leaf rolling and plant streaking (purple in cool weather, white in hot weather); control threshold when > 10% of tillers are infested in spring; insecticide control listed.

10747. Anon.. 1991. Guarding the granary.. Harrowsmith Country Life, Jul/Aug 1991, p. 102.
USDA tests have shown that predatory insects do a better job of controlling stored grain pests than fumigation, and pose no risk of contamination. New regulations are needed to allow introduction of biocontrol insects into grain bins. These bugs can be easily removed during cleaning, but their levels generally do not get high. Using the bugs before harvest will help eliminate residual pests and add to the prevention of a problem.

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