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Start Over Author "Brown, Sally" Journal journal of environmental quality
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20. Correction of limed-biosolid induced manganese deficiency on a long-term field experiment

Author

Angle, J. S., Brown, Sally, and Chaney, R. L.

Subjects
WASTE management, LIME (Minerals), WASTEWATER treatment, SEWAGE, MANGANESE
Abstract

Land application of lime-stabilized biosolids has been reported to cause Mn deficiency in wheat (Triticum aestivum L.) and soybean [Glycine max (L.) Merr.]. Deficiencies were observed on a long-term biosolid research experiment in Beltsville, MD, that had been established ona Galestown sand (sandy, siliceous, mesic Psammentic Hapludult) in 1976 with lime-stabilized biosolids applied at 224 and 448 Mg ha-1. For the present study, a randomized complete block experiment was set up in plot areas of the original study. Soil amendments included Mn0 at 50, 100, and 200 kg ha-1, and MnS04 at 200 kg ha-1. Plots were split with random half plots receiving a foliar application of MnS04 at 0.5 kg ha-1 Mn. Soybean and wheat were double cropped for two seasons (1991995). Measured indexes of deficiency included youngest emerged blade (YEB) and grain Mn, plant chlorophyll, and yield, wheat exhibited severe Mn deficiency for both seasons in the 224 Mg ha-1 biosolid plots. Only plants grown in the MnSO4- amended soils were not deficient in Mn. Fofiar Mn spray also alleviated Mn deficiency. Although soybean plants were not Mn deficient,plants in the MnSO4- treated plots had higher YEB Mn concentrations. Soil extractions to reflect phytoavailsble Mn,including Mehlich 1 (Ml), Mehlich 3 (M3), and DTPA were conducted onmoist soils. Results from M3 and DTPA extractions mirrored plant response. The Ml extraction did not predict plant response indicating that this extraction is not appropriate for predicting Mn deficiency incoarse-textured high pH soils. [ABSTRACT FROM AUTHOR]

Published
1997

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