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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 71, No. 1, 2011, pp. 157-163
Bioline Code: cj11019
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 71, No. 1, 2011, pp. 157-163

 es Effects of Biofertilizers Combined with Different Soil Amendments on Potted Rice Plants
Javaid, Arshad

Resumen

El presente estudio en macetas fue realizado para investigar el efecto de la aplicación combinada de dos biofertilizantes comerciales, Biopower y EM (Effective Microorganisms), en el crecimiento y producción de arroz (Oryza sativa L.) en suelos enmendados con estiércol de granja, abono verde y fertilizantes NPK. Biopower es un producto del Nuclear Institute for Biotechnology and Genetic Engineering (NIBGE), Pakistán, que contiene especies de diazótrofos asociativos y endofíticos. Effective Microorganisms es un producto desarrollado por científicos japoneses que consiste en microorganismos benéficos co-existentes, principalmente especies de bacterias fotosintéticas y ácido lácticas, y levadura. La aplicación de Biopower afectó adversamente el crecimiento y producción vegetal en enmienda de fertilizante NPK. Inversamente, este biofertilizante mejoró marcadamente el crecimiento y producción vegetal en suelo enmendado con abono verde mientras en enmienda con estiércol de granja su efecto fue insignificante. En enmienda con estiércol verde, la aplicación de EM mejoró el rendimiento de grano en 46%. Co-inoculación de Biopower y EM mejoró marcadamente el crecimiento radical y de brotes en suelo enmendado con estiércol de granja. El presente estudio concluye que los dos biofertilizantes mejoraron marcadamente la biomasa de brotes y rendimiento de grano en suelos enmendados con abono verde.

Palabras-clave
fijadores de N2 asociados, Biopower, microorganismos efectivos, arroz, enmiendas de suelo.

 
 en Effects of Biofertilizers Combined with Different Soil Amendments on Potted Rice Plants
Javaid, Arshad

Abstract

This pot study investigated the effect of the combined application of two commercial biofertilizers viz. Biopower and EM (Effective Microorganisms) on rice (Oryza sativa L.) growth and yield in soils amended with farmyard manure, green manure, and NPK fertilizers. Biopower is a product of the Nuclear Institute for Biotechnology and Genetic Engineering (NIBGE), Pakistan, which contains species of associative and endophytic diazotrophs. EM (effective microorganisms), a product developed by Japanese scientists, consists of co-existing beneficial microorganisms, mainly species of photosynthetic and lactic acid bacteria, as well as yeast. Applying Biopower adversely affected plant growth and yield in NPK fertilizer amendment. Conversely, this biofertilizer markedly enhanced plant growth and yield in green manure amended soil while its effect was not significant in farmyard manure amendment. In green manure amendment, applying EM enhanced grain yield by 46%. Co-inoculation of Biopower and EM evidently improved root and shoot growth in farmyard manure amended soil. This study concludes that the two biofertilizers clearly enhanced shoot biomass and grain yield in green manure amended soils.

Keywords
Associated N2-fixers, Biopower, Effective microorganisms, rice, soil amendments.

 
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