Fungicidal control of ascochyta blight of field pea

1996 ◽  
Vol 76 (1) ◽  
pp. 67-71 ◽  
Author(s):  
T. D. Warkentin ◽  
K. Y. Rashid ◽  
A. G. Xue
Keyword(s):  
Pisum Sativum ◽  
Key Words ◽  
Untreated Control ◽  
Seed Weight ◽  
Ascochyta Blight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Yield Increase ◽  
Pisum Sativum L

The use of fungicides for the control of ascochyta blight in field pea was investigated. Four fungicides were applied to the cultivars AC Tamor and Radley at two locations in Manitoba in 1993 and 1994. Fungicides were applied either once, twice, or three times at 10-d intervals, beginning at the initiation of flowering. Chlorothalonil and benomyl were effective m reducing the severity of ascochyta blight and increasing the yield and seed weight of field pea. The triple application of chlorothalonil resulted in a mean yield increase of 33% over that of the untreated control. Iprodione and propiconazole were relatively ineffective in controlling ascochyta blight. The percentage of seedborne ascochyta was not significantly affected by fungicide treatments. The severity of ascochyta blight was greater in 1993 that in 1994, resulting in greater benefits of chlorothalonil and benomyl applications in 1993. Key words: Field pea, Pisum sativum L., ascochyta blight, Mycosphaerella pinodes, fungicide

AAC Asher field pea

2020 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne ◽  
Debra L. McLaren ◽  
Richard Cuthbert ◽  
Hamid Naeem
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Asher is a semi-leafless, medium to large seeded yellow cotyledon field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, early to medium maturity and good lodging resistance. AAC Asher has maturity of 94 days, and one-thousand-seed weight of 257 g. AAC Asher is resistant to powdery mildew (caused by Erysiphe pisi Syd.), moderately tolerant to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Asher is adapted to all field growing regions in western Canada.

AAC Delhi field pea

2021 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Delhi is a semi-leafless, large-seeded yellow field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, medium maturity and good lodging resistance. AAC Delhi has the maturity of 95 days, and one-thousand-seed weight of 288 g. AAC Delhi is resistant to powdery mildew (caused by Erysiphe pisi Syd.), and is moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Delhi is adapted to all field growing regions in western Canada.

AAC Profit field pea

2021 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne ◽  
Richard Cuthbert ◽  
Hamid Naeem
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Crude Protein ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Crude Protein Content ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Profit is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has a maturity of 101 d, thousand-seed weight of 218 g, and a lodging score of 4.1 on the scale of 1-9 (1=upright, 9=prostrate). The seed crude protein content of AAC Profit is 24.5%. AAC Profit is resistant to powdery mildew (caused by Erysiphe pisi), and moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum).

AAC Chrome field pea

2019 ◽  
Vol 99 (5) ◽  
pp. 777-779
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debra McLaren ◽  
Yantai Gan ◽  
Richard Cuthbert
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Chrome is a semi-leafless, yellow cotyledon field pea (Pisum sativum L.) variety developed at the Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe, AB. It has high yielding potential, medium maturity, and good lodging resistance. AAC Chrome has a maturity of 95 d and thousand-seed weight of 241 g. AAC Chrome is resistant to powdery mildew (caused by Erysiphe pisi), moderately tolerant to mycosphaerella blight (caused by Mycosphaerella pinodes), and moderately susceptible to fusarium wilt (caused by Fusarium oxysporum). AAC Chrome is adapted to all field pea growing regions in western Canada.

Response of field pea cultivars to chlorothalonil in the control of mycosphaerella blight

2003 ◽  
Vol 83 (2) ◽  
pp. 313-318 ◽  
Author(s):  
A. G. Xue ◽  
J. Charest ◽  
C. G. Davidson ◽  
D. W. McAndrew ◽  
D. J. Bing ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Key Words ◽  
Disease Severity ◽  
Seed Weight ◽  
Field Pea ◽  
Yield Potential ◽  
Mycosphaerella Pinodes ◽  
Seed Infection ◽  
Fungicide Treatment ◽  
Disease Pressure

The efficacy of chlorothalonil in controlling mycosphaerella blight in field pea was evaluated from 1998 to 2000 using 10 cultivars representing different leaf types, market classes, seed sizes, plant heights, and maturities. Significant differences ( P < 0.05) were observed among cultivars in disease severity, yield, 1000-seed weight (TSW), and seed infection each year. Cultivar × fungicide treatment interactions for these parameters were not significant in any of the 3 yr. Under both chlorothalonil treated and untreated conditions, Radley was the most resistant, while Carrera and Keoma were equally the most susceptible cultivars. A higher efficacy of chlorothalonil treatments was observed in 1999 when disease severity was greater than in 1998 or 2000. On average, chlorothalonil treatments reduced disease severity significantly in 1999 and 2000, but not in 1998. Overall, the fungicide increased yield by 6.4%, and TSW by 0.9–5.1%, which were significant in 1998 and 1999, but not in 2000. Based on 2-yr assessments of seed infection by Mycosphaerella pinodes, chlorothalonil reduced seed infection by 19.2%, which was significant in 1999, but not in 2000. Chlorothalonil treatments provide a greater benefit in years when disease pressure and yield potential are high. Key words: Field pea, Pisum sativum, mycosphaerella blight, Mycosphaerella pinodes, chlorothalonil

BELLEVUE FIELD PEA

1987 ◽  
Vol 67 (3) ◽  
pp. 805-806
Author(s):  
A. E. SLINKARD ◽  
R. A. A. MORRALL
Keyword(s):  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Pisum Sativum L ◽  
Cultivar Description

Bellevue field pea (Pisum sativum L.) was licensed in 1986. It is about 15% higher yielding than the check cultivars Century and Trapper. Bellevue has smooth seeds with yellow cotyledons. It has the le gene for shortened internodes and is about 6 d later maturing than Century and Trapper. Seed weight is about 179 g/1000 seeds, intermediate between Century and Trapper.Key words: Cultivar description, pea (field), Pisum sativum L.

Proximate and mineral composition of field peas

1997 ◽  
Vol 77 (1) ◽  
pp. 101-103 ◽  
Author(s):  
T. D. Warkentin ◽  
A. G. Sloan ◽  
S. T. Ali-Khan
Keyword(s):  
Pisum Sativum ◽  
Key Words ◽  
Mineral Composition ◽  
Seed Yield ◽  
Total Protein ◽  
Field Pea ◽  
Pisum Sativum L ◽  
Field Peas ◽  
Pea Seeds ◽  
Proximate And Mineral Composition

Field pea seeds from 10 cultivars grown at two locations in Manitoba in 1986 and 1987 were analyzed for proximate and mineral profiles. Cultivars differed significantly in their level of total protein, crude fat, ADF, and all minerals tested. However, differences were not extremely large and were comparable to European reports. Location-year also had a significant effect on the levels of total protein, ADF, and all minerals tested. In most cases, the warmest location-year produced relatively higher levels of minerals, ash, and total protein, and lower seed yield than the coolest location-year. Key words: Field pea, Pisum sativum L., mineral

Importance of seed-borne inoculum in the etiology of the Ascochyta blight complex of field peas (Pisum sativum L.) grown in Victoria

1995 ◽  
Vol 35 (4) ◽  
pp. 525 ◽  
Author(s):  
TW Bretag ◽  
TV Price ◽  
PJ Keane
Keyword(s):  
Pisum Sativum ◽  
Ascochyta Blight ◽  
Mycosphaerella Pinodes ◽  
Seed Infection ◽  
Seeding Rate ◽  
Pisum Sativum L ◽  
Field Peas ◽  
Ascochyta Pisi ◽  
Growing Region ◽  
Seed Infestation

Fungi associated with the ascochyta blight complex of field peas were isolated from 436 of 691 seedlots tested. Of the fungi detected, 94.8% of isolates were Mycosphaerella pinodes, 4.2% Phoma medicaginis, and 1.0% Ascochyta pisi. The levels of infestation of seed varied considerably from year to year and between seedlots, depending on the amount of rainfall between flowering and maturity. Within a particular pea-growing region, the level of seed-borne infection was often highest in seed from crops harvested latest. In addition, crops sown early were usually more severely affected by disease than late-sown crops, and this resulted in higher levels of seed infection. There was no correlation between the level of seed infestation by M. pinodes and the severity of ascochyta blight; however, where the level of seed infection was high (>11%) there was a significant reduction in emergence, which caused a reduction in grain yield. It may therefore be possible to use seed with high levels of seed-borne ascochyta blight fungi, provided the seeding rate is increased to compensate for poor emergence.

Agassiz field pea

2006 ◽  
Vol 86 (4) ◽  
pp. 1167-1169 ◽  
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Al Sloan ◽  
Robert Conner ◽  
Yantai Gan ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Key Words ◽  
Field Pea ◽  
Western Canada ◽  
Seed Shape ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Cultivar Description ◽  
Round Seed

Agassiz is a semi-leafless and powdery mildew resistant field pea (Pisum sativum L.) cultivar with yellow cotyledons, high seed yielding ability, good lodging resistance, round seed shape and medium seed size. It is adapted to field pea growing regions in western Canada. Key words: Field pea, Pisum sativum, cultivar description, yellow cotyledons

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