Plant Disease (2003) 87, 1411-1415

Vilma C. Conci, Ana Canavelli, P. Lunello, J. Di Rienzo, S.F. Nome, G. Zumelzu and Rusell Italia (2003)
Yield losses associated with virus-infected garlic plants during five successive years
Plant Disease 87 (12), 1411-1415
Abstract: Virus-free garlic plants, when planted in the field, are quickly infected by viruses, but it is not known to what extent this affects the yield over successive crop cycles. The yield loss curve was studied for these plants during 5 years of tests in the field. Highly significant differences were detected in the weight and perimeter of bulbs in relation to the years of exposure to virus infection. An increase was observed in yield compared with chronically diseased plants of between 66 and 216% in weight and 13 and 37% in perimeter of bulbs in the first crop cycle and 49% in weight and 16% in perimeter in the fifth year. These results showed a gradual loss in yield until the third year, and subsequently the production values remained steady for the fourth and fifth years of testing but were still higher than those reached by chronically diseased plants.
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Database assignments for author(s): Vilma C. Conci

Research topic(s) for pests/diseases/weeds:
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Onion yellow dwarf virus	Onion/garlic/leek (Allium)	Argentina
	Leek yellow stripe virus	Onion/garlic/leek (Allium)	Argentina