Productivity, soil fertility and nutritional status of guarana grown in organic systems
Abstract
The guarana [ Paullinia cupana var . sorbilis ( Mart. ) Ducke ] is one of the most important agricultural products in the state of Amazonas , being necessary to deploy a production system with low environmental and economic impact , mainly targeting small farmers in the region . For this, an experiment with three clones guarana ( 871 CMU , CMU 300 and CMU 612 ) grown under field conditions in Manaus , State of Amazonas , over a Yellow Oxisol ( Oxisol ) with 696 g kg - 1 clay was performed . The experimental design was a confounding 33 , with three doses of charcoal ( 0 , 800 and 1600 kg ha - 1 ), three chicken manure ( 0 , 2720 and 5440 kg ha - 1 ) and three bone meal and meat ( 0 , 80 and 160 kg ha - 1 ) . The CMU 871 clone proved to be the most promising for growing inside the system used . In all three clones , the highest yields were obtained with guarana use 1600 kg ha - 1 of charcoal, 2720 kg ha - 1 of chicken manure and 160 kg ha - 1 of bone and meat meal . At conditions studied , the amount applied to cover charcoal did not affect soil fertility and nutritional status of guarana .
Downloads
Downloads
Published
Issue
Section
License
Authors retain copyright and grant the Journal the right to the first publication. Authors are encouraged to and may self-archive a created version of their article in their institutional repository, or as a book chapter, as long as acknowledgement is given to the original source of publication. As the Journal provides open access to its publications, articles may not be used for commercial purposes. The contents published are the sole and exclusive responsibility of their authors; however, the publishers can make textual adjustments, adaptation to publishing standards and adjustments of spelling and grammar, to maintain the standard patterns of the language and the journal. Failure to comply with this commitment will submit the offenders to sanctions and penalties under the Brazilian legislation (Law of Copyright Protection; nº 9,610; 19 February 1998).
.jpg)
