Effects of wheat volunteers and blackgrass in set-aside following a winter wheat crop on soil infectivity and soil conduciveness to take-all
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Two experiments were carried out in France in which disease indices were used to evaluate the effects of wheat volunteers and blackgrass (Alopecurus myosuroides) on soil infectivity and soil conduciveness to take-all caused by Gaeumannomyces graminis var. tritici. Soil infectivity was evaluated by measuring the disease index on susceptible wheat plants grown on soil samples collected from the field. Soil conduciveness to the disease was obtained by measuring disease indices on plants grown on soil samples to which different amounts of take-all fungus inoculum were added. One experiment (Expt. 1) was carried out using soils from farmers' fields (two fields in 1994 and two in 1995); soil infectivity and soil conduciveness were evaluated for three experimental situations: bare soil, soil with wheat volunteers and soil with blackgrass plants. In 1994 the soil infectivity was zero in bare soil, high with the wheat cover, and intermediate with the blackgrass cover. In 1995 the soil infectivity was uniformly low for all three conditions. Soils bearing wheat were less conducive than bare soil, soils bearing blackgrass and bare soils were similarly conducive. A second experiment (Expt. 2) carried out in 1995 compared the soil infectivity and soil conduciveness to take-all of soils planted with wheat or blackgrass in set-aside land after periods of wheat monoculture of 0–6 yr. The soil infectivity was low for all treatments. The soil was more conducive after blackgrass than after wheat. In both cases, the soil conduciveness was less when the monoculture had continued for more than 4 yr. The decline was less after blackgrass than after wheat. Thus, whenever set-aside is set up during the increase phase of the disease in fields with cereal successions, abundant wheat volunteers might hinder the expected positive effect of a break in cereal successions on take-all development. The presence of blackgrass in a set-aside field, with significant soil infectivity and high soil conduciveness, might increase the risks of take-all development in a wheat crop following set-aside.
- Chauvel B, Barralis G, Dessaint F and Chadoeuf R 1995 Développement de populations adventices en situation de jachère annuelle. In 16∘ conférence du Columa. pp 725–732. ANPP, Paris.
- Colbach N and Huet P 1995 Modelling the frequency and severity of root and foot diseases in winter wheat monocultures. Eur. J. Agron. 4, 217–227.
- Colbach N, Lucas P and Cavelier N 1994 Influence des successions culturales sur les maladies du pied et des racines de blé d'hiver. Agronomie 14, 525–540.
- Cook R J and Rovira A D 1976 The role of bacteria in the biological control of Gaeumannomyces graminis by suppressive soils. Soil Biol. Biochem. 8, 269–273.
- Fisher N M, Dyson P W, Windham J, Davies D H K and Lee K 1992 A botanical survey of set-aside land in Scotland. In Set-aside. Ed. J Clarke. pp 67–72. Proceedings of the BCPC, Monograph series, 50, Farnham.
- Gerlagh M 1968 Introduction of Ophiobolus graminis into new polders and its decline. Meded. Lab. Phytopath. N∘ 241.
- Hancock M, Ellis S, Green D B and Oakley J N 1992 The effects of short-and long-term set-aside on cereal pests. In Set-aside. Ed. J Clarke. pp 195–200. Proceedings of the BCPC, Monograph series, 50, Farnham.
- Lemaire J M and Coppenet M 1968 Influence de la succession céréalière sur les fluctuations de la gravité du piétin-échaudage (Ophiobolus graminis Sacc.). Annales des Epiphyties 19, 589– 599.
- Lockwood J L 1988 Evolution of concepts associated with soilborne plant pathogens. Ann. Rev. Phytopathol. 26, 93–121.
- Lucas P, Sarniguet A, Collet J M and Lucas M 1989 Réceptivité des sols au piétin-échaudage (Gaeumannomyces graminis var. tritici): Influence de certaines techniques culturales. Soil Biol. Biochem. 21, 1073–1078.
- Nilsson H E, 1969 Studies of root and foot rot diseases of cereals and grasses. I. On resistance to Ophiobolus graminis Sacc. Landrukshögskolans Annaler 35, 275–807.
- Sarniguet A and Lucas P 1992 Evaluation of populations of fluorescent pseudomonads related to decline of take-all patch on turfgrass. Plant Soil 145, 11–15.
- Sarniguet A, Lucas P and Lucas M 1992 Relationships between take all, soil conduciveness to the disease, populations of fluorescent pseudomonads and nitrogen fertilizers. Plant Soil 145, 17–27.
- SAS Institute 1989 SAS/STAT User's guide. Version 6. 4th ed. SAS Institute, Cary, NC.
- Steinbrenner K and HÖflich G 1984 Einfluβ acker-und pflanzenbaulicher Maβnahmen auf den Befall des Getreides durch Pseudocercosporella herpotrichoides (Fron) Deighton und Gaeumannomyces graminis (Sacc.) Arx et Olivier. Arch Acker-Pflanzenbau, Bodenkd 20, 469–486.
- Slope D B 1967 Disease problems on intensive cereals growing. Ann. Appl. Biol. 59, 317–319.
- Wilson P J 1992 The natural regeneration of vegetation under setaside in southern England. In Set-aside. Ed. J Clarke. pp 73–78. Proceedings of the BCPC, Monograph series, 50, Farnham.
- Yarham D J and Symonds B V 1992 Effect of set-aside on diseases of cereals. In Set-aside. Ed. J Clarke. pp. 41–46. Proceedings of the BCPC, Monograph series, 50, Farnham.
- Effects of wheat volunteers and blackgrass in set-aside following a winter wheat crop on soil infectivity and soil conduciveness to take-all
Plant and Soil
Volume 197, Issue 1 , pp 149-155
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