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Applied and Environmental Soil Science
Volume 2015, Article ID 873504, 10 pages
http://dx.doi.org/10.1155/2015/873504
Research Article

Agronomic Efficiency of Biosolid as Source of Nitrogen to Banana Plants

1Soils and Environmental Resources Center, Agronomic Institute (IAC/APTA), Avenida Barao de Itapura, 1481 Botafogo, 13020902 Campinas, SP, Brazil
2Ribeira Valley Regional Pole (DDD/APTA), Road BR116, km 460, P.O. Box 122, 11900000 Registro, SP, Brazil

Received 19 August 2014; Revised 1 December 2014; Accepted 17 December 2014

Academic Editor: Alejandro Valdecantos

Copyright © 2015 Luiz Antonio Junqueira Teixeira 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

Sewage sludge (SS) or biosolid has been studied as source of nutrient for several different plant species. It also contributes to soil fertility recycling organic matter and plant nutrients. This followup work examines a three-year (2001–2004) field experiment designed to evaluate the response of banana plants (Cavendish subgroup) to the application of biosolid as source of nitrogen. The treatments consisted of control (mineral PK, no N), three rates of sludge, and two rates of mineral NPK fertilizer. Plant and soil N concentration, fruit yield, plant height, stem diameter, and foliar endurance index were measured. Fruit yield with mineral fertilization or sludge applications did not differ statistically . Application of biosolid resulted in statistically significant higher agronomic efficiency in comparison to mineral fertilizers. The concentration of soil mineral nitrogen increased using mineral fertilizer or sludge until 0.80 m after three years of application. The effect of the source of N was smaller than the effect of the rate. Biosolid can be used as source of N for banana growers.