The influence of manganese on the development of potato scab

McGregor, A. J.; Wilson, G.C.S.

doi:10.1007/bf01347957

Cited by 20 publications

(5 citation statements)

References 24 publications

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“…All of these practices increase the solubility of Mn, and situations where scab is severe with these practices appear to reflect the presence of too little readily reducible Mn for standard practices to have any effect (58,108). The low incidence of scab on acid soils is at least partially attributed to the concentration of soluble Mn released, and the occurrence of scab on acid soils is limited to soils with a low Mn content (100,101).…”

Section: Correlation Oj Disease With Environmentaljactors Which Also mentioning

confidence: 94%

The Role of Manganese in Resistance to Plant Diseases

Huber¹,

Wilhelm²

1988

Manganese in Soils and Plants

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Section: Correlation Oj Disease With Environmentaljactors Which Also mentioning

confidence: 94%

The Role of Manganese in Resistance to Plant Diseases

Huber¹,

Wilhelm²

1988

Manganese in Soils and Plants

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“…Addition of ALS to site W increased the concentration of manganese in both leaf tissue and tubers in the year of application. Increased levels of exchangeable manganese may be directly toxic to pathogens or may increase the resistance of plants to pathogen attack by improving metabolism (21)(22)(23)(24). If manganese was a factor involved in scab reduction at site W, it appeared not to be a factor at site V, however, where no elevated manganese levels in leaf tissue were found.…”

Section: Locationmentioning

confidence: 61%

Reduction of potato scab and verticillium wilt with ammonium lignosulfonate soil amendment in four Ontario potato fields

Soltani

Conn

Abbasi

et al. 2002

Canadian Journal of Plant Pathology

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Single applications of ammonium lignosulfonate (ALS, ca. 6 t solids/ha) were made at four commercial potato fields in Ontario (sites K, V, W, and G in 1998, 1999, 2000, and 2000, respectively). Potato tubers were planted 2-4 weeks after ALS incorporation. The effects on potato scab, verticillium wilt, tuber yield, soil chemistry, and soil microbiology were determined in the year of application, and for a second crop at sites K (1999), V (2000), and G (2001). Potato scab severity was significantly reduced (50-80%) by ALS treatment in the year of application at all sites. Significantly less scab was present for the second crop at sites K and G. The incidence of Verticillium dahliae infected plants was also significantly decreased (40-50%) by ALS treatment at all sites in the year of application and for the second crop at site K. Ammonium lignosulfonate significantly increased total tuber yield by 2.5 times at site G in 2000. There was no effect on tuber yield at the other sites. However, marketable yield (tubers with <5% surface scab) was significantly increased three-to seven-fold over the control plots at all sites in the year of application. Although marketable yield was consistently higher in subsequent crops at all sites, it was only statistically significant at site G. Soil pH was immediately reduced following application of ALS by 0.4-0.6 units at all sites except site W, where it had no effect. Soil pH returned to control levels by the second season at all sites except site G, which remained one log unit lower than the control treatment. Numbers of soil microorganisms increased two-to eight-fold at all sites within weeks of ALS application. Fungal numbers increased the most and remained elevated for two seasons at site K compared with control plots. The results of this study clearly demonstrate that use of ALS as a soil amendment can significantly reduce the severity of potato scab and verticillium wilt in potato crops.

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“…Also note the positive Mn loading on Factor 2. This could be due to Mn applications intended to control common scab proliferations (Streptomyces scabies; [11]). The positive TOC-linked F2 entry for Cu could be due to foliar Cu applications intended to control occurrences of potato blight (Phytophtora infestans), scab and black-scurf inducing Rhizoctania, and potato-damaging nematodes ( [12] [13]).…”

Section: Influences Of Topography and Other Factors On The Surveyed S...mentioning

confidence: 99%

Re-Examining Field-Surveyed Variations in Elevation and Soil Properties with a 1-m Resolution LiDAR-Generated DEM

Lemieux,

Arp

2023

OJSS

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This article presents a 2017 LiDAR-DEM guided 1-m resolution examination of field-surveyed elevation and soil property variations (5 × 5 m spacings) conducted in 1977 across a hummocky New Brunswick field used for potato production. This examination revealed that the field incurred minor elevation differences were likely due to upslope erosion, as revealed through increasing Sand % and CF % with increasing elevation, and increasing Silt % along low-lying areas. Soil moisture, field capacity, permanent wilting and nitrate nitrogen (NO 3 -N) also increased at downslope locations. Directly as well as indirectly, soil pH, ammonium nitrogen (NH 4 -N), Caesium 137 (Cs 137 ) and Mehlich-3 extracted Ca, Mg, K, Fe, Mn, Cu, and Zn were likewise affected by topographic location. Factor analyzing these variables led to: 1) a Soil Loss Factor that captured 24% of the textural variations; 2) a Soil-Cropping Factor accounting for 16% of the N, P, K, Ca, Mg, Mn variations; 3) a Soil Organic Matter (SOM) Factor relating 9% of the in-field variations for SOM, Fe, Zn, Cu to via organo-metal complexation and low NO 3 -N retention. Many of the topographic variations increased or decreased with the metric DEMprojected depth-to-water index (DTW) index. This index was set to 0 along DEM-derived flow channels with minimum upslope flow-accumulation areas of 0.1, 0.25, 0.5, 1 or 4 ha. Among these, the DTW > 4 ha threshold was useful for reproducing the textural variations, while the DTW > 0.25 ha threshold assisted in capturing trends pertaining to moisture retention and elemental concentrations.

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The influence of manganese on the development of potato scab

Cited by 20 publications

References 24 publications

The Role of Manganese in Resistance to Plant Diseases

The Role of Manganese in Resistance to Plant Diseases

Reduction of potato scab and verticillium wilt with ammonium lignosulfonate soil amendment in four Ontario potato fields

Re-Examining Field-Surveyed Variations in Elevation and Soil Properties with a 1-m Resolution LiDAR-Generated DEM

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