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Land application of carbonatic lake-dredged materials: effects on soil quality and forage productivity.
J Environ Qual 2006 Sep-Oct; 35(5):1784-94JE

Abstract

The ability to reuse carbonatic lake-dredged materials (CLDM) for agricultural purposes is important because it reduces offshore disposal and provides an alternative to disposal of the materials in landfills that are already overtaxed. A four-year (2001 to 2005) study on land application of CLDM as an option for disposal was conducted on a beef cattle pasture in south central Florida. The objectives of this study were (i) to assess CLDM as a soil amendment to improve quality of sandy soils in most subtropical beef cattle pastures and (ii) to determine the effect of CLDM on productivity and nutritive values of bahiagrass (BG, Paspalum notatum Flügge) in subtropical beef cattle pasture. The five treatment combinations arranged in randomized complete block design were represented by plots with different ratios (R) of natural soil (NS) to CLDM: R1 (1000 g kg(-1):0 g kg(-1)); R2 (750 g kg(-1):250 g kg(-1)); R3 (500 g kg(-1):500 g kg(-1)); R4 (250 g kg(-1):750 g kg(-1)); and R5 (0 g kg(-1):1000 g kg(-1)). Addition of CLDM had significant (p < or = 0.001) effects on soil quality and favorable influence on forage establishment and nutritive values. Compared with the control plots (0 g kg(-1)), the soils in plots amended with CLDM exhibited (i) lower penetration resistance, (ii) an increase in soil pH and exchangeable cations (Ca and Mg), and (iii) decrease in the levels of soil trace metals (Mn, Cu, Fe, Zn, and Si). Results disclosed consistently and significantly (p < or = 0.001) higher BG biomass production (forage yield = -106.3x(2) + 1015.8x - 39.2; R(2) = 0.99**) and crude protein content (CP = 1.24x + 6.48; R(2) = 0.94**) from plots amended with CLDM than those of BG planted on plots with no CLDM treatment.

Authors+Show Affiliations

USDA-ARS, Subtropical Agricultural Research Station, Brooksville, FL 34601, USA. gcsigua@ifas.ufl.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16899749

Citation

Sigua, Gilbert C., et al. "Land Application of Carbonatic Lake-dredged Materials: Effects On Soil Quality and Forage Productivity." Journal of Environmental Quality, vol. 35, no. 5, 2006, pp. 1784-94.
Sigua GC, Coleman SW, Holtkamp ML. Land application of carbonatic lake-dredged materials: effects on soil quality and forage productivity. J Environ Qual. 2006;35(5):1784-94.
Sigua, G. C., Coleman, S. W., & Holtkamp, M. L. (2006). Land application of carbonatic lake-dredged materials: effects on soil quality and forage productivity. Journal of Environmental Quality, 35(5), pp. 1784-94.
Sigua GC, Coleman SW, Holtkamp ML. Land Application of Carbonatic Lake-dredged Materials: Effects On Soil Quality and Forage Productivity. J Environ Qual. 2006;35(5):1784-94. PubMed PMID: 16899749.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Land application of carbonatic lake-dredged materials: effects on soil quality and forage productivity. AU - Sigua,Gilbert C, AU - Coleman,Samuel W, AU - Holtkamp,Mike L, Y1 - 2006/08/09/ PY - 2006/8/11/pubmed PY - 2006/12/29/medline PY - 2006/8/11/entrez SP - 1784 EP - 94 JF - Journal of environmental quality JO - J. Environ. Qual. VL - 35 IS - 5 N2 - The ability to reuse carbonatic lake-dredged materials (CLDM) for agricultural purposes is important because it reduces offshore disposal and provides an alternative to disposal of the materials in landfills that are already overtaxed. A four-year (2001 to 2005) study on land application of CLDM as an option for disposal was conducted on a beef cattle pasture in south central Florida. The objectives of this study were (i) to assess CLDM as a soil amendment to improve quality of sandy soils in most subtropical beef cattle pastures and (ii) to determine the effect of CLDM on productivity and nutritive values of bahiagrass (BG, Paspalum notatum Flügge) in subtropical beef cattle pasture. The five treatment combinations arranged in randomized complete block design were represented by plots with different ratios (R) of natural soil (NS) to CLDM: R1 (1000 g kg(-1):0 g kg(-1)); R2 (750 g kg(-1):250 g kg(-1)); R3 (500 g kg(-1):500 g kg(-1)); R4 (250 g kg(-1):750 g kg(-1)); and R5 (0 g kg(-1):1000 g kg(-1)). Addition of CLDM had significant (p < or = 0.001) effects on soil quality and favorable influence on forage establishment and nutritive values. Compared with the control plots (0 g kg(-1)), the soils in plots amended with CLDM exhibited (i) lower penetration resistance, (ii) an increase in soil pH and exchangeable cations (Ca and Mg), and (iii) decrease in the levels of soil trace metals (Mn, Cu, Fe, Zn, and Si). Results disclosed consistently and significantly (p < or = 0.001) higher BG biomass production (forage yield = -106.3x(2) + 1015.8x - 39.2; R(2) = 0.99**) and crude protein content (CP = 1.24x + 6.48; R(2) = 0.94**) from plots amended with CLDM than those of BG planted on plots with no CLDM treatment. SN - 0047-2425 UR - https://www.unboundmedicine.com/medline/citation/16899749/Land_application_of_carbonatic_lake_dredged_materials:_effects_on_soil_quality_and_forage_productivity_ L2 - http://dl.sciencesocieties.org/publications/jeq/articles/35/5/1784 DB - PRIME DP - Unbound Medicine ER -