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Organic & Integrated Tree Fruit Production

Wednesday, January 24, 2018

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Search results on 01/24/18

1440. Cook, R.J.(ed.). 1969. Nature of the inluence of crop residues on fungus-induced root diseases.. Western Regional Research Publ. W-38, WA Agr. Expt. Sta. Bull 716.
Includes crops throughout the western states, including irrigated land and horticultural crops. Discusses techniques for studying pathogens in the soil environment, persistance, growth, nutrient interaction, role of antibiosis, and residue effects.

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.

2488. Heald, F.D. and H.M. Woolman. 1915. Bunt or stinking smut of wheat.. WA Agr. Expt. Sta. Bull #126.
Summary of recommendations: Crop rotation; clean seed/ treated seed; very early or late seeding in fall; seeding summer fallow during 3-4 weeks after fall rains results in smut, but replowing of summer fallow reduces smut; shallow planting; resistant varieties of wheat may someday be available. T: Variation in number of normal and smutted heads. Number of smutted plants in several varieties. Persistance of smut when placed in soil. Amount of smut from treated seed planted in new soil on various dates. Efficiency of bluestone and formaldehyde treatments. Effect of time of planting on amount of smut. Effect of depth of planting on the percentage of smut. Resistance of winter wheat varieties to smut.

2535. Henderson, L.F.. 1906. Experiments with wheat and oats for smut.. ID Agr. Expt. Sta. Bull. #53.
A method using formaldehyde to control smut on grain seed

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.

2818. Hungerford, C.W.. 1930. Treatment for control of grain smuts.. ID Agr. Expt. Sta. Circular #59.
Gives descriptions of methods available. T: suggested treatment

3579. Kephart, K.D. and R.E. Allan. 1988. Madsen and Hyak soft white winter wheats.. ID Agr. Expt. Sta. CIS #823.
These varieties are resistant to strawbreaker foot rot, also to 3 rust pathogens; can allow earlier fall seeding date.

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.

7524. White, J.G.H.. undated. Grain legumes in sustainable cropping systems; a review.. unpublished manuscript, Plant Science Dept..
This paper briefly reviews the role that grain legumes can play in sustaining cropping systems. It presents various estimates of N fixation of grain legumes, with lupin and fababean showing the highest rates, followed by peas and lentils, chickpeas, and soybeans. Phaseolus beans are generally poor N fixers. Fababeans are more tolerant of soil mineral N than other species and will still fix large quantities of N when mineral N is present. Under drought stressed conditions, peas and lentils were more efficient in N fixation than fababeans. Only in lupins and fababeans was N fixation normally greater than the N removed in the seed. The roots and nodules of grain legumes are likely to be the greatest source of N for following crops. This N is often quickly mineralized within several weeks after harvest, and strategies are needed to prevent its loss. Grain legumes are also beneficial break crops, particularly for soil-borne diseases, and can help to control certain grassy weeds. Preceding grain legumes with a brassica crop has reduced the incidence of Aphanomyces root rot in peas, due to sulfur containing compounds. Most grain legumes suffer reduced yields if soils are compacted and poorly aerated. The paper contains numerous references and tables on nitrogen relations.

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