WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Wednesday, April 25, 2018


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154. Alberta Agriculture, Crop Protection Branch. 1989. Guide to crop protection in Alberta. 1988. Part II - Non-chemical control of weeds, insects, diseases for maximum economic yield.. Print Media Branch, Alberta Agriculture, 7000 - 113 St.,.
Alberta Agriculture's non-chemical guide to crop protection contains 28 pages of general advice on how to control weeds, insects, and disease in crops without chemical pesticides. This includes crop rotation, sanitation, crop competition, physical control, biocontrol, and field scouting. The rest of the book looks at specific pests and considers their life cycles, emergence, reproduction, management strategies, and control. Where available, tables of economic thresholds are included. This is an excellent reference for assessing potential alternatives to chemical pesticides for a large number of pests.

1300. Cheema, S.S., D.S. Kler and D.S. Grewal. 1985. Improve wheat yields through bi-directional sowing.. Indian Farming, 35:7-9.
Experiments for 8 seasons showed that bi-directional sowing suppresses weeds, minimises the incidence of powdery mildew and brown rust. Primary yield contributing character was the higher number of effective tillers per unit area. Uniformly spaced plants without overcrowding within the rows, get more solar radiation. Relatively less penetration of light to ground surface resulted in lower soil temperature in bi-directional sowing.

1581. Dhillon, G.S. and D.S. Grewal. 1982. Increasing fertilizer efficiency and minimising disease and weeds. Energy Conservation and Use of Renewable Energies in the Bio-Industrial Nations..
Sowing in two directions produced significantly higher biological and grain yield with the same cost. Grain production per kg of nutrients used averaged 21.8 kg for sowing in two directions, 20.6 kg for north-south and 19.6 kg for east-west direction. Sowing in two directions showed a significantly reduction (31.4%) dry matter production of weeds, powdery mildew and brown rust.

3200. Strand, L.L (ed.). 1990. Integrated pest management for small grains.. Univ. Calif. ANR Publ. 3333, Oakland, CA. 126 pp..
This publication is part of a series on major crops in California. It is a well-written volume with a wealth of information. There are many figures and pictures included to help in diagnosing pest problems. Cultural, biological, mechanical, and chemical controls are included.

3945. Mahler, R.L.. 1981. Implications of acidification of farmland in northern Idaho.. ID Agr. Expt. Sta. CIS #629.
Loss of Ca and Mg is primarily by crop removal in northern Idaho; wheat crop removes 20-50 lb/ac/yr of each cation; ammonium-based fertilizers have been main acidifying factor; had been a big change in past 25 yrs; large % of soils now below pH 6.0; current wheat varieties in Idaho acid intolerant; soil acidity may favor certain weeds and diseases.

5735. Rasmussen, P.E. and C.R. Rohde. 1988. Stubble burning effects on winter wheat yield and N utilization under semiarid conditions.. Agronomy J. 80:940-942.
Burning vs. not burning was examined at 3 nitrogen levels over 6 years (3 crops). Burning had no effect on grain yield or grain N uptake. Burning increased straw yield when wheat was fertilized by N, but had no effect on straw N uptake. Burning did not decrease foot rot incidence or severity, but did reduce downy brome density. T: Effects of stubble burning and N fertilization on grain and straw of winter wheat 1980-85. Effect of stubble burning on foot rot infection. Effect of stubble burning on downybrome infestation.

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