Chemical characterization of conducive and suppressive soils for potato scab in Hokkaido, Japan

Nature, properties and function of aluminum–humus complexes in volcanic soils

“…To enhance control of potato common scab by Al, a single basal application of ammonium sulfate is applied to each planting row. This application effectively lowers the soil pH and increases the concentration of aqueous Al to effectively suppress disease incidence (Mizuno et al, 1998(Mizuno et al, , 2000.…”

Necrosis Gene-Based Monitoring and Control of Potato Scab Disease

“…A significant correlation (r 2 = 0.6829) was found between the numbers of copies of the nec1 gene detected in soil by QCQP-PCR at harvest and aluminum ion concentrations in water-extracted solutions of the soils in the 2005 spring cropping. The presence of aluminum ions depresses potato scab disease [14][15][16] . As explained above, the disease was inhibited if the number of copies was below 1,000 per g-soil 9) .…”

“…Soils from the fields with high copy numbers were treated with the antagonistic microorganism and/or fertilization amelioration, and we investigated the effects of these treatments on scab disease control. The fertilization amelioration method used was demonstrated by Mizuno et al 14) as a measure against potato scab disease in Hokkaido 15) . This method uses ammonium sulfate as the nitrogen component of the chemical fertilizer applied to the planting rows, and mixes the phosphorus and potash components with the soil all over the field.…”

“…This paper reports the results of using QCQP-PCR to quantify the number of copies of the nec1 gene in soil prior to the start of potato cultivation, and a disease control technique utilizing a combination of fertilizer improvement [14][15][16] and antagonistic microorganisms employed based on the result of the quantification for the purpose of enhancing the efficacy of the antagonistic microorganism.…”

Effects of deep plowing and “cutting and banking” practice on the concentration of water-soluble aluminum and allophane content in Andosols: Implication for recent incidence of potato common scab in Abashiri area

“…The concentration of water-soluble Al in the A horizon soil of the virgin fields, 0.3 mg L -1, was high enough to suppress the occurrence of potato common scab (Mizuno et al , 1998Yoshida et al 1994Yoshida et al , 1997. Before the 1970s, most farmers had cultivated only the A horizon using horse power, which may account for the lack of occurrence of potato scab at that time.…”