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Applied and Environmental Soil Science
Volume 2013 (2013), Article ID 573808, 7 pages
http://dx.doi.org/10.1155/2013/573808
Research Article

Establishment of Native Grasses with Biosolids on Abandoned Croplands in Chihuahua, Mexico

1Sitio Experimental La Campana-Madera, CIRNOC, INIFAP, Km 33.3 Carretera Chihuahua-Ojinaga, 32910 Aldama, CHIH, Mexico
2Departamento de Recursos Naturales, Facultad de Zootecnia y Ecologia, Universidad Autonoma de Chihuahua, Km 1 Periferico Francisco Almada, 31415 Chihuahua, CHIH, Mexico

Received 2 July 2013; Revised 26 August 2013; Accepted 4 September 2013

Academic Editor: Giancarlo Renella

Copyright © 2013 Pedro Jurado-Guerra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The objective of the work was to evaluate establishment and forage production of native grasses with application of biosolids, a byproduct of waste-water treatment, at an abandoned field, in Ejido Nuevo Delicias, Chihuahua, Mexico. Four biosolids rates from 0 (control) to 30 dry Mg ha−1 and two methods of application, surface applied (BioSur) and soil incorporated (BioInc), were evaluated. Seedbed preparation included plowing and harrowing before rainfall. Field plots of 5 × 5 m were manually sown with a mix of blue grama (Bouteloua gracilis) (50%) and green sprangletop (Leptochloa dubia) (50%) in early August 2005. Experimental design was a randomized block with a split plot arrangement. Grass density, height, and forage production were estimated for three years. Data were analyzed with mixed linear models and repeated measures. Green sprangletop density increased under all biosolids rates regardless of method of application, while blue grama density slightly decreased. Biosolids were more beneficial for green sprangletop height than for blue grama height. Blue grama forage production slightly increased, while green sprangletop forage production increased the most at 10 Mg ha−1 biosolids rate under BioSur method. It was concluded that BioSur application at 10 and 20 Mg ha−1 rates had positive effects on the establishment and forage production of native grasses, especially green sprangletop.