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Abstract

Elemental sulfur (S) and aluminum sulfate (AS), each at four rates, were used to acidify a Lily sandy loam soil of pH 6.2 and to assess effects on early growth of rabbiteye blueberry (Vaccinium ashei Reade) transplants. In addition, sawdust was incorporated into the soil at rates of 0%, 20%, 40%, and 60% by volume. Soils treated with AS had higher levels of extractable A1 and plants had less growth compared to plants grown in soils treated with elemental S. Plants grown in soils not amended with sawdust exhibited poor growth, regardless of the rate of either S or AS. Percent weight gain generally increased with increasing rate of sawdust addition.

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Greenhouse-grown pecan [Carya illinoensis (Wangenh.) C. Koch] seedlings were treated with S as SO4 -2 (0 to 4 mm) to determine the effect of S on its vegetative growth, chlorophyll concentration, nutrition, and free and protein amino acid content. Sulfur deficiency symptoms occurred when leaf S was ≈1.5 mg·g-1 dry weight or less. Chlorophyll concentration and growth increased curvilinearly with leaf S and had not peaked when leaf S was 2.7 mg·g-1 dry weight. The N : S ratio in the leaf and leaf S were equally reliable indicators of the S status of the plant, but the optimum ratio was less than the value of 15 found in other plant species. Calcium and Mg decreased with S application, suggesting a direct SO4 -2 or NH4 + effect. The concentration of all other elements determined was elevated, in one or more plant parts, when S deficiency symptoms were visible. The most conspicuous effect of S deficiency on N metabolism was a greatly expanded free amino acid pool, mainly arginine. The concentration of free amino acids decreased exponentially with leaf S. Conversely, protein amino acid was inhibited by S deficiency and increased with leaf S concentration or, perhaps more specifically, with methiouine.

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( Berndt and Vargas, 2006 ). Although tracers proved bacterial reduction of 35 SO 4 2– occurred, other research suggested elemental sulfur (S 0 ) was reduced to S 2– ( Berndt, 1990 ; Berndt and Vargas, 1992 , 1996 ). For example, when anoxic sand

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treated with only preplant fertilizer. With regard to N sources, Locascio and Martin (1985) found that when 100% of the N was applied before planting, strawberry marketable fruit number and weight were significantly greater with sulfur-coated urea than

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. Selenium (micrograms per gram dry weight) and sulfur (percent per gram dry weight) concentrations in leaf tissue of hydroponically grown rapid-cycling Brassica oleracea at 30 to 31 d. Plants were exposed to Se concentrations ranging from 0 to 1.5 mg·L −1

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determine the influence of elemental sulfur (S) and two lime sources on DFB pH, nutrient availability with respect to changes in substrate pH, and if relationships between pH and nutrient availability in DFB alone are similar to DFB amended with peatmoss and

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conditions was determined by Gliszczyńska-Świgło et al. (2007) . Quercetin and kaempferol contents were highly positively correlated with total solar radiation from planting to harvest. The effect of poor (15 kg·ha −1 ) or rich (150 kg·ha −1 ) sulfur soil

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2012). An 80% PL1:20% compost baseline treatment was created by mixing the PL1 with left-over compost from the 2012 experiments (designated C1). Additional treatments were the 80%:20% blend mixed with 1, 2, or 3 lb sulfur per cubic yard of blend. We

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Elemental sulfur is a commonly applied, effective powdery mildew control strategy in vineyards dating back two centuries ( Forsyth, 1802 ). Bordelon et al. (2016) recommended a diverse and integrated management system for the control of powdery

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crop productivity, diminish crop quality, affect plant health, and impair N use efficiency ( Barker and Pilbeam, 2007 ). The role of S in helping to manage plant disease has been investigated for centuries. Recently, the concept of sulfur

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