Sulfur and certain soil amendments for potato scab control in the peat soils of northern Iowa

Hooker, William Jackson; Kent, G. C.

doi:10.1007/bf02852644

Cited by 11 publications

(3 citation statements)

References 16 publications

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“…There was no S effect when these materials were applied PE. Since these trials were conducted on alkaline soils (pH 7.8–8.1) and these low rates were effective except at PE, the data suggest that the S effect is not due to a lowering of the pH (Hooker and Kent, 1950). However, the mode of action of S in reducing common scab and black scurf may not be altogether clear.…”

Section: Discussionmentioning

confidence: 99%

“…The reduction of common scab, at least with IF application, is due to the S in the sulfate ion and the thiosulfate ion as the ammonium ion is not effective (Hooker and Kent, 1950). Additional evidence suggesting that the sulfate ion is effective in promoting potato yield and reducing tuber disease incidence is suggested from reports on the application of heavy metal ions such as Mn (Mortvedt et al, 1963).…”

Section: Discussionmentioning

confidence: 99%

“…Ammonium sulfate would be used in lower amounts, be a source of N, and fit into a fertilizer management scheme. Working with cultivar Irish Cobbler on slightly acid soils, Hooker and Kent (1950) reported that AS applied IF at rates resulting in 134 and 268 kg S ha −1 increased total and marketable yields and reduced the incidence of common scab. Reporting preliminary data on the cultivar Atlantic on acidic soil, Hammerschmidt and Vitosh (1987) reported yield increases and reduction in common scab with AS applied at 128 kg S ha −1 both IF plus early PE.…”

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confidence: 99%

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Early‐Season Applications of Sulfur Fertilizers Increase Potato Yield and Reduce Tuber Defects

Pavlišta

2005

Agronomy Journal

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the optimum range for common scab infection and increase its incidence (Goss, 1934). However, as early as Sulfur recommendations are based on avoiding deficiency. Since the 1920s, it was observed that lower quantities (340 kg S may have additional effects, the objective was to determine whether ha Ϫ1 ) of elemental S could also lower common scab and S fertilizers increase yield and reduce tuber defects. Potato (Solanum increase yield even without substantially lowering pH of tuberosum L.) cultivar Atlantic was treated with wettable sulfur (WS), ammonium sulfate (AS), and ammonium thiosulfate (TS) at 0, 28, 56, slightly acid soil (Martin, 1920; Duff and Welch, 1927). 84, and 112 kg S ha Ϫ1 applied at planting [in-furrow (IF)], 11 d laterIn North America, among the cheapest and easiest to [pre-emergence (PE)], 11 d after emergence [postemergence (PT)], obtain form of the sulfate ion is AS. In many situations, and at tuber initiation (TI). Separate trials were conducted for each elemental S requires large amounts. Ammonium sulfate fertilizer and application. Ammonium nitrate and urea were added would be used in lower amounts, be a source of N, and to AS and TS to equalize N. Yield of U.S. "A" potato was increased fit into a fertilizer management scheme. Working with 11 to 34% by fertilizers at S rates greater than 56 kg ha Ϫ1 at IF, PT, cultivar Irish Cobbler on slightly acid soils, Hooker and and by AS and WS at TI. These fertilizers applied IF and at TI reduced Kent (1950) reported that AS applied IF at rates rethe incidence of common scab (Streptomyces scabies) on tubers. When sulting in 134 and 268 kg S ha Ϫ1 increased total and applied PT, AS and TS reduced common scab; WS did not. The marketable yields and reduced the incidence of common incidence of black scurf (Rhizoctonia solani) on tubers was reduced scab. Reporting preliminary data on the cultivar Atlanwhen AS and TS were applied PT but not when applied IF and at tic on acidic soil, Hammerschmidt and Vitosh (1987) TI. Pre-emergence application had no effect. Other tuber characterisreported yield increases and reduction in common scab tics, e.g., specific gravity and vascular discoloration, were unaffected.with AS applied at 128 kg S ha Ϫ1 both IF plus early PE.Plant growth was inhibited by TS applied after emergence but recovered. Yield was increased by S at 56 kg ha Ϫ1 applied IF, PT, and at They also reported a reduction in the soil population of TI except for TS applied at TI. Common scab and black scurf were S. scabies several weeks later when tubers were initiated. reduced depending on application timing and fertilizer.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Early‐Season Applications of Sulfur Fertilizers Increase Potato Yield and Reduce Tuber Defects

Pavlišta

2005

Agronomy Journal

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The Influence of Sulfur on Populations of Streptomyces Scabies and Other Streptomycetes in Peat Soil

Vlitos

Hooker

1951

American J of Botany

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The mineralization of nitrogen in a soil acidified with sulphur, aluminium sulphate or ferrous sulphate

Cornfield

1953

J Sci Food Agric

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The mineralization of nitrogen in a soil which had been acidified to different degrees by applying sulphur, aluminium sulphate or ferrous sulphate a t three equivalent rates was studied. With low and medium applications of the acidifying materials pH was reduced to a similar extent at each rate by all materials, but with heavy applications sulphur had the least potent, and ferrous sulphate the most potent, effect in reducing pH. During incubation of the treated soils in the absence of added chalk, nitrate and total mineral nitrogen (ammonia plus nitrate) accumulation decreased, whereas ammonia accumulation increased with the amount of acidifying agent used. When the acidified soils were incubated with excess of added chalk, nitrate accumulation returned to normal, except where heavy application of sulphur and ferrous sulphate had been made ; total mineral-nitrogen accumulation returned to normal, except where heavy ferrous sulphate application had been made ; and ammonia accumulation occurred only where heavy ferrous sulphate application had been made.The reduction of soil pH by the application of acidifying materials such as sulphur has been practised in order (a) to increase the availability of trace elements such as manganese,l (b) to reduce disease incidence in plants (e.g. Hooker2 found that commercial control of potato scab was obtained by applying sulphur to the soil) and (c) to produce suitable soil conditions for the growth of acid-loving species such as rhododendrons and azaleas.Apart from a mention by Fraps & Sturges3 that the application of sulphur to a soil resulted in decreased nitrification, little attention has been paid to changes in ammonification and nitrification that may result in soils which have been acidified in this way. Since there is a

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Sulfur and certain soil amendments for potato scab control in the peat soils of northern Iowa

Cited by 11 publications

References 16 publications

Early‐Season Applications of Sulfur Fertilizers Increase Potato Yield and Reduce Tuber Defects

Early‐Season Applications of Sulfur Fertilizers Increase Potato Yield and Reduce Tuber Defects

The Influence of Sulfur on Populations of Streptomyces Scabies and Other Streptomycetes in Peat Soil

The mineralization of nitrogen in a soil acidified with sulphur, aluminium sulphate or ferrous sulphate

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