Effects of ascochyta blight (Mycosphaerella pinodes Berk. & Blox.) on biomass production, seed number and seed weight of dried-pea (Pisum sativum L.) as affected by plant growth stage and disease intensity

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

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

Australian Journal of Experimental Agriculture ◽

10.1071/ea9950525 ◽

1995 ◽

Vol 35 (4) ◽

pp. 525 ◽

Cited By ~ 22

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.

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AAC Asher field pea

Canadian Journal of Plant Science ◽

10.1139/cjps-2020-0190 ◽

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.

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AAC Delhi field pea

Canadian Journal of Plant Science ◽

10.1139/cjps-2021-0154 ◽

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.

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AAC Profit field pea

Canadian Journal of Plant Science ◽

10.1139/cjps-2021-0153 ◽

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).

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AAC Chrome field pea

Canadian Journal of Plant Science ◽

10.1139/cjps-2019-0120 ◽

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.

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COMBINED APPLICATION OF ARBUSCULAR MYCORRHIZAE FUNGI AND PLANT GROWTH PROMOTING BACTERIA IMPROVES GROWTH AND NUTRIENT UPTAKE EFFICIENCY OF PEA (Pisum sativum L.) PLANTS

Acta Scientiarum Polonorum Hortorum Cultus ◽

10.24326/asphc.2018.5.7 ◽

2018 ◽

Vol 17 (5) ◽

pp. 73-86 ◽

Cited By ~ 2

Author(s):

Eriola Veselaj ◽

Glenda Sallaku ◽

Astrit Balliu

Keyword(s):

Pisum Sativum ◽

Plant Growth ◽

Nutrient Uptake ◽

Arbuscular Mycorrhizae ◽

Plant Growth Promoting Bacteria ◽

Combined Application ◽

Pisum Sativum L ◽

Plant Growth Promoting ◽

Growth Promoting ◽

Nutrient Uptake Efficiency

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BELLEVUE FIELD PEA

Canadian Journal of Plant Science ◽

10.4141/cjps87-109 ◽

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.

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