Effects of tillage systems and crop rotations on root and foliar diseases of wheat, flax, and peas in Saskatchewan

The dynamics of root and foliar diseases were studied in spring and winter wheat, peas, and flax and under zero, minimum, and conventional tillage at Indian Head, Saskatchewan, from 1987 to 1990. No disease was observed on flax during the 4 yr. Year-to-year variation was more important than tillage systems in explaining the incidence of bacterial leaf spot and foot rot of peas. Tan spot and septoria leaf blotch were the most important foliar diseases of wheat. Disease ratings (0–9) of the leaf spots were greater on winter wheat (average 2.2) than on spring wheat (average 1.9) and also greater on spring wheat following a cereal (average 2.0) than following peas or summer fallow (average 1.7). Hot and dry weather did not enhance development of foliar diseases, and no consistent effects of tillage on leaf disease ratings were observed. However, take-all and common root rot were affected by crop management. Incidence of take-all was greater on winter wheat (8%) than on spring wheat (1%) and also greater on winter wheat under conventional (11%) than minimum (8%) or zero tillage (6%). Severity of common root rot of spring wheat was greater following either spring (24%) or winter wheat (25%) than peas (22%) and summer fallow (15%). The severity of common root rot varied from year to year. In 3 of the 4 years, minimum-till and zero-till reduced the severity of the disease.Key words: Zero till, minimum till, conventional till, crop rotation, disease, spring wheat, winter wheat

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Generation and Characterization ofPgPGIP1Transgenic Wheat Plants with Enhanced Resistance to Take-all and Common Root Rot

ACTA AGRONOMICA SINICA ◽

10.3724/sp.j.1006.2013.01576 ◽

2013 ◽

Vol 39 (9) ◽

pp. 1576 ◽

Cited By ~ 3

Author(s):

Li-Hua YANG ◽

Jin-Feng WANG ◽

Li-Pu DU ◽

Hui-Jun XU ◽

Xue-Ning WEI ◽

...

Keyword(s):

Root Rot ◽

Common Root ◽

Common Root Rot ◽

Enhanced Resistance ◽

Take All

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Infrared thermometry leaf temperature measurements and common root rot of spring wheat and spring barley

Plant and Soil ◽

10.1007/bf02370657 ◽

1987 ◽

Vol 101 (2) ◽

pp. 287-290 ◽

Cited By ~ 2

Author(s):

L. J. Duczek

Keyword(s):

Spring Wheat ◽

Root Rot ◽

Spring Barley ◽

Leaf Temperature ◽

Temperature Measurements ◽

Common Root ◽

Infrared Thermometry ◽

Common Root Rot

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EFFECTS OF IMAZALIL SEED TREATMENT ON SUBCROWN INTERNODE LENGTHS AND COLEOPTILE-NODE-TILLERING IN WHEAT

Canadian Journal of Plant Science ◽

10.4141/cjps80-206 ◽

1980 ◽

Vol 60 (4) ◽

pp. 1467-1472 ◽

Cited By ~ 6

Author(s):

S. H. F. CHINN ◽

P. R. VERMA ◽

D. T. SPURR

Keyword(s):

Spring Wheat ◽

Root Rot ◽

Seed Treatment ◽

Cold Hardiness ◽

Morphological Changes ◽

Wheat Cultivars ◽

Soft Or ◽

Common Root ◽

Common Root Rot ◽

Treated Seed

The effects of seed treatment with imazalil at 0.2 and 0.3 g a.i./kg seed on subcrown internode length and occurrence of coleoptile-node-tillers (CNT) was studied in four spring wheat cultivars at two locations in Saskatchewan. Without treatment, Cypress had the longest internodes followed in descending order by Glenlea, Neepawa, and Wascana. Generally, plants from imazalil-treated seed had significantly shorter subcrown internodes. Only a few plants from nontreated seed produced CNT and of these, many were soft or aborted, while the treated seed produced a number of CNT and many of these were firm tillers. The possible importance of these morphological changes in the reduction of common root rot, on drought resistance, cold hardiness, and yield is discussed.

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EFFECT OF COVER CROPS ON WINTER SURVIVAL, COMMON ROOT ROT, AND YIELD OF WINTER WHEAT

Canadian Journal of Plant Science ◽

10.4141/cjps62-042 ◽

1962 ◽

Vol 42 (2) ◽

pp. 286-293 ◽

Cited By ~ 2

Author(s):

A. D. Smith ◽

J. S. Horricks ◽

J. E. Andrews

Keyword(s):

Winter Wheat ◽

Cover Crops ◽

Root Rot ◽

Cover Crop ◽

Ammonium Phosphate ◽

Winter Survival ◽

Common Root ◽

Common Root Rot

When four varieties of winter wheat (Yogo, Kharkov 22 M.C., Jones Fife, and Elgin) were sown into wheat, oat, or barley cover crops, the yields were lower than when they were sown on fallow. The yield of winter wheat sown into the different cover crops was highest in barley and lowest in wheat cover crop. When the growth of cover crops was abundant, the yield of winter wheat was reduced. Application of ammonium-phosphate-sulphate fertilizer (16-20-0) increased the yield of winter wheat and generally decreased the severity of common root rot. Winter survival was generally greater when winter wheat was sown into cover crops than when it was sown on fallow. Root rot was most severe in winter wheat sown into wheat cover and was progressively less severe when sown into fallow, barley, or oat cover. Neither blade-cultivating nor mowing the cover crop prior to seeding the winter wheat appreciably affected the yield.

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