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

1962 ◽  
Vol 42 (2) ◽  
pp. 286-293 ◽  
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.

scholarly journals Relationship Among Seed Size, Planting Date, and Common Root Rot in Hard Red Winter Wheat

Plant Disease ◽  
2001 ◽  
Vol 85 (9) ◽  
pp. 973-976 ◽  
Author(s):  
G. Piccinni ◽  
J. M. Shriver ◽  
C. M. Rush
Keyword(s):  
Winter Wheat ◽  
Disease Severity ◽  
Seed Size ◽  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Planting Date ◽  
Common Root ◽  
Common Root Rot ◽  
Hard Red Winter Wheat ◽  
Red Winter Wheat

A dryland field study was conducted to determine the effect of seed size and planting date of hard red winter wheat on the severity of common root rot caused by Bipolaris sorokiniana (Sacc.) Shoemaker. Seed of cvs. Hawk, TAM 200, TAM 107, Scout 66, and Siouxland 89 were separated into three size categories of small, mixed, and large and were planted in the first weeks of September and October 1994 and 1995. Disease ratings for incidence and severity of subcrown internode infections were made in March and at harvest. At harvest, grain yields were collected. In both years of the study, there was no interaction between seed size and cultivars for any of the measured variables. Overall, seed size had no effect on disease severity or grain yield for either year. However, when sorted by planting date, plants from small seed yielded less than plants from other seed. October plantings showed lower disease indices than September plantings at the March evaluation. At the harvest disease evaluation, there were no differences in disease severity between planting dates for the first year but, in the second year of the study, plants from the October planting had lower disease than those from the September planting. There was no significant correlation among seed size, final yield, and disease index. The results of this study suggest that the expense of planting higher-quality certified seed cannot be justified for producing hard red winter wheat in dryland conditions in the Texas Panhandle, considering the current price of wheat and the average dryland yield.

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

1992 ◽  
Vol 72 (2) ◽  
pp. 583-591 ◽  
Author(s):  
K. L. Bailey ◽  
K. Mortensen ◽  
G. P. Lafond
Keyword(s):  
Winter Wheat ◽  
Spring Wheat ◽  
Root Rot ◽  
Tan Spot ◽  
Common Root ◽  
Tillage Systems ◽  
Foliar Diseases ◽  
Common Root Rot ◽  
Summer Fallow ◽  
Take All

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

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

2013 ◽  
Vol 39 (9) ◽  
pp. 1576 ◽  
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

Expression ofBvGLP1in Transgenic Wheat Enhances Resistance to Common Root Rot

2013 ◽  
Vol 39 (2) ◽  
pp. 368
Author(s):  
Liang DANG ◽  
Zhen-Qi SU ◽  
Xing-Guo YE ◽  
Hui-Jun XU ◽  
Zhao LI ◽  
...  
Keyword(s):  
Root Rot ◽  
Transgenic Wheat ◽  
Common Root ◽  
Common Root Rot

The epidemiology of common root rot in Manitou wheat: disease progression during the growing season

1974 ◽  
Vol 52 (7) ◽  
pp. 1757-1764 ◽  
Author(s):  
P. R. Verma ◽  
R. A. A. Morrall ◽  
R. D. Tinline
Keyword(s):  
Triticum Aestivum ◽  
Disease Severity ◽  
Plant Development ◽  
Root Rot ◽  
Growing Season ◽  
Cochliobolus Sativus ◽  
Infection Rates ◽  
Common Root ◽  
Common Root Rot ◽  
Disease Rating

Common root rot in Triticum aestivum cultivar Manitou caused primarily by Cochliobolus sativus was followed during plant development in 1969, 1970, and 1971 at Matador, Saskatchewan. Plants were sampled at intervals, and three variables based mainly on the occurrence of lesions on subcrown internodes were studied: number of diseased plants per square meter; percentage of diseased plants; and disease rating which integrated percentage of diseased plants and disease severity on each plant. All variables increased with time, and the progression curves in all 3 years were hyperbolic, indicating that the increases were like those of a simple interest disease as described by Van der Plank. In two of the years, almost 100% of the plants were diseased considerably before the end of the season. The transformation proposed by Van der Plank for simple interest diseases, log10[1/(1 − x)], was applied to the percentages of diseased plants, and regressions were calculated. The slopes of these lines (infection rates) were as follows: 1969, 0.99% plants per day; 1970, 1.32%; and 1971, 1.96%. In 1969 the onset of disease was later than in 1970 and 1971, and there was correspondingly less disease at the end of the growing season.

Effect of imazalil seed treatment on common root rot and grain yields of cereal cultivars

1981 ◽  
Vol 3 (4) ◽  
pp. 239-243 ◽  
Author(s):  
P.R. Verma ◽  
S.H.F. Chinn ◽  
W.L. Crowle ◽  
D.T. Spurr ◽  
R.D. Tinline
Keyword(s):  
Root Rot ◽  
Seed Treatment ◽  
Common Root ◽  
Grain Yields ◽  
Common Root Rot ◽  
Cereal Cultivars
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