Cereal Diseases and their Effects on Intensive Wheat Cropping in the East Midland Region, 1963–65

Rosser, W. R.; Chadburn, Barbara L.

doi:10.1111/j.1365-3059.1968.tb00418.x

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…Most have found significant negative relationships between take‐all levels and yield, e.g. Rosser & Chadburn (1968), Polley & Clarkson (1980) and Schoeny et al . (2001), although the quantitative nature of this relationship differed across the studies.…”

Section: Introductionmentioning

confidence: 98%

Explaining variation in the effects of take‐all (Gaeumannomyces graminis var. tritici) on nitrogen and water uptake by winter wheat

Pillinger¹,

Paveley²,

Foulkes³

et al. 2005

Plant Pathology

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Two field experiments, in 1999 and 2000, were used to test whether reductions in root growth and function explained the effects of take-all on crop water and nitrogen uptake. The fungicide silthiofam was used to manipulate take-all independently of other factors. Soil water content was manipulated from heading to determine effects on disease progress and resource capture. Epidemic progress was significantly delayed in the presence of silthiofam, leading to reductions in disease in both experiments. Effects of silthiofam were reduced by increasing soil water late in the season, although only in 2000 did increased soil water content have a direct effect, leading to a higher rate of disease increase. Higher levels of disease in the absence of silthiofam did not affect root growth as measured by total root length density (TRLD), but did lead to significantly reduced healthy root length density (HRLD, a measure of functional roots) in both experiments. Only in 2000 were there any significant effects of increased take-all on water and nitrogen uptake. This was attributed to the higher TRLD in the (1999) crop, which allowed HRLDs to be maintained above a critical threshold (where water and nitrogen uptake start to be severely affected) despite loss of functional root to disease. The effects of take-all on nitrogen uptake were more likely to affect crop canopy size and duration than the relatively small effects observed on water uptake. Increasing soil water content allowed the crop to take up more water in absolute terms despite, in 2000, increasing levels of disease and reducing HRLD.

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Section: Introductionmentioning

confidence: 98%

Explaining variation in the effects of take‐all (Gaeumannomyces graminis var. tritici) on nitrogen and water uptake by winter wheat

Pillinger¹,

Paveley²,

Foulkes³

et al. 2005

Plant Pathology

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show abstract

“…Precise quantification has been difficult because of the variability and patchiness of take‐all disease, and the absence of long‐term, detailed monitoring 3. Attempts have been made to quantify the losses resulting from different amounts of take‐all using surveys4, 5 and field experiments 6. 7 A drawback to such approaches is that differences in take‐all symptoms were often a result of treatments that also had a direct effect on yield (eg amount of nitrogen fertiliser, sowing date).…”

Section: Introductionmentioning

confidence: 99%

Variation in the effects of take‐all disease on grain yield and quality of winter cereals in field experiments

Gutteridge

Bateman

Todd

2003

Pest Management Science

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Relationships between take-all intensity and grain yield and quality were determined in field experiments on cereal crops using regression analyses, usually based on single-point disease assessments made during anthesis or grain-filling. Different amounts of take-all were achieved by different methods of applying inoculum artificially (to wheat only) or by using different cropping sequences (in wheat, triticale or barley) or sowing dates (wheat only) in crops with natural inoculum. Regressions of yield or thousand-grain weight on take-all intensity during grain filling were similar to those on accumulated disease (area under the disease progress curve) when these were compared in one of the wheat experiments. Regressions of yield on take-all intensity were more often significant in wheat than in the less susceptible crops, triticale and barley, even when a wide range of disease intensities was present in the latter crops. The regressions usually had most significance when there were plots in the severe disease category. Thousand-grain weight and hectolitre weight usually responded similarly to total grain yield. Decreased yield was often accompanied by a significant increase in the percentage of small grains. When severe take-all was present in wheat, regressions showed that nitrogen uptake was usually impaired. This was sometimes accompanied, however, by increased percentage nitrogen in the grain as a consequence of smaller grain size with decreased endosperm. Significant effects of take-all, both positive and negative, on Hagberg falling number in wheat sometimes occurred. Significant regressions of yield on take-all assessed earlier than usual, ie during booting rather than grain-filling in wheat and triticale and during anthesis/grain-filling rather than ripening in barley, had steeper slopes. This is consistent with observations that severe disease that develops early can be particularly damaging, whilst the crops, especially barley, can later express tolerance by producing additional, healthy roots. The regression parameters, including maximum potential yield (y-axis intercept) and the extrapolated maximum yield loss, also varied according to the different growing conditions, including experimental treatments and other husbandry operations. These differences must be considered when assessing the economic potential of a control measure such as fungicidal seed treatment.

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“…There are now many reports that continuous wheat causes "take-all decline" (Fellows and Ficke 1934;Anon. 1941;Glynne 1965;Lemaire and Coppenet 1968;Rosser and Chadburn 1968).…”

Section: (B) Ceduna Locationmentioning

confidence: 99%

Incidence of Gaeumannomyces Graminis Var. Tritici in Consecutive Wheat Crops

Nish¹,

Dodman²

1973

Aust. Jnl. Of Bio. Sci.

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A mapping technique based on an "incidence-yield" regression was used to study the incidence of G. graminis var. tritici in consecutive wheat crops at two locations in South Australia. At both locations there were only small differences between the two years, although at Turretfield (third and fourth crops) there was a tendency for highincidence areas to contract, while at Ceduna (second and third crops) disease incidence tended to increase.

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Cereal Diseases and their Effects on Intensive Wheat Cropping in the East Midland Region, 1963–65

Cited by 12 publications

References 8 publications

Explaining variation in the effects of take‐all (Gaeumannomyces graminis var. tritici) on nitrogen and water uptake by winter wheat

Explaining variation in the effects of take‐all (Gaeumannomyces graminis var. tritici) on nitrogen and water uptake by winter wheat

Variation in the effects of take‐all disease on grain yield and quality of winter cereals in field experiments

Incidence of Gaeumannomyces Graminis Var. Tritici in Consecutive Wheat Crops

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