Effect of organic amendments and microbial inoculant on nitrogen, phosphorus and potassium use efficiency of sugarcane under acid typic hapludand

Abstract

© 2017, International Society for Southeast Asian Agricultural Sciences. All rights reserved. A field experiment was established in an acid Typic Hapludand in Isabela, Negros Occidental, Philippines from January to December 2016 to optimize the use of mudpress, bagasse ash and microbial inoculant in sugarcane production using ‘Phil 2004-1011’ sugarcane variety. Twelve treatments were imposed including no fertilization, with full fertilization using inorganic fertilizer, and with full fertilization + lime. The recommended N rate (RRN) was reduced to 75, 50 and 25% with subsequent application of mud press to satisfy the full RRN. Bagasse ash at 10 t ha-1 and microbial inoculant were likewise used to supplement the nutrient sources. Standard cultural practices for sugarcane production were followed. Cane yield and NPK use efficiency indices were determined and analyzed to come up with a judicious fertilization program. Integrated nutrient management practices including mudpress, bagasse ash and microbial inoculant improved cane yield, partial factor productivity and agronomic efficiency of applied N, and physiological efficiency of applied P. Application of lime resulted to better partial factor productivity and apparent recovery efficiency of applied P. Combined use of inorganic fertilizer and mudpress enhanced partial factor productivity of applied K, while addition of bagasse ash and microbial inoculant increased physiological efficiency of applied K.

Source or Periodical Title

Journal of the International Society for Southeast Asian Agricultural Sciences

ISSN

8593132

Page

114-124

Document Type

Article

Subject

Amendments, Microbial inoculant, Nutrient use efficiency

This document is currently not available here.

Share

COinS