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[SANET-MG] Comparison between Organic and Mineral Fertilization for Soil Fertility Levels, Crop Macronutrient Concentrations, and Yield
Published in Agron J 99:973-983 (2007)
DOI: 10.2134/agronj2006.0168
Comparison between Organic and Mineral Fertilization for Soil Fertility
Levels, Crop Macronutrient Concentrations, and Yield
J. F. Herenciaa, J. C. Ruiz-Porrasa, S. Meleroa, P. A. Garcia-Galavisa,
E. Morillob and C. Maquedab,*
a Instituto de Investigación y Formación Agraria y Pesquera "Las
Torres-Tomejil" Seville (IFAPA), Carretera Sevilla-Cazalla de la Sierrra
km 12.2, 41200 Alcalá del Río Seville, Spain
b Instituto de Recursos Naturales y Agrobiología de Sevilla (CSIC), Apdo
1052, 41080-Sevilla, Spain
Interest in soil organic fertilization has grown appreciably in recent
years; however, few studies have been performed in greenhouses. A
comparative study of organic vs. mineral fertilization in a greenhouse
has been conducted for 9 yr in a calcareous loamy soil classified as
Xerofluvent in the Guadalquivir River Valley, Seville, Spain. The
nutrient availability in the soil, macronutrient concentration in the
edible part of the plants, and yield were examined. The organic
fertilizer used was vegetal compost and green residue of previous crops
that came from the experimental farm and did not depend on external
inputs. The use of organic fertilizer resulted in higher soil organic
matter, soil N content, and available P and K. However few differences
were found in the macronutrient concentration in the edible part of the
crops, independent of the type of fertilization. The nitrate
concentration in the edible parts was significantly lower for the crops
grown in the organically fertilized plots. Crop yield was not
statistically different between fertilizer treatments. This study
demonstrated that long-term use of organic compost in greenhouse soil
improved soil fertility and produced similar yields and nutrient
composition in the edible portion of crops compared with mineral
fertilization.
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