Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1014966
Research center of Embrapa/Collection: Embrapa Semiárido - Artigo em periódico indexado (ALICE)
Date Issued: 2015
Type of Material: Artigo em periódico indexado (ALICE)
Authors: PINHEIRO, K. M.
SILVA, T. G. F. da
DINIZ, W. J. da S.
CARVALHO, H. F. de S.
MOURA, M. S. B. de
Additional Information: KARINA MENDES PINHEIRO, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; THIERES GEORGE FREIRE DA SILVA, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; WELLINGTON JAIRO DA SILVA DINIZ, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; HERICA FERNANDA DE SOUSA CARVALHO, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; MAGNA SOELMA BESERRA DE MOURA, CPATSA.
Title: Indirect methods for determining the area index of forage cactus cladodes.
Publisher: Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 163-171, abr./jun. 2015.
Language: en
Keywords: Indice de área cladódio
Nopalea
Analisador de dossel
Método destrutivo
Canopy analyzer
Destructive method.
Description: Methods for determining leaf area index have been applied to various agricultural crops. However, their uses are limited to broadleaf plants, with no record for forage cactus, whose radiation interception is performed by the cladode. This study aimed to evaluate the use of different indirect methods to estimate the area index of forage cactus cladode. Cladodes from clones of Nopalea cochenillifera Salm Dyck, Nopalea cochenillifera Salm Dyck and Opuntia stricta (Haw) Haw were used, being sampled sixty plants per clone, distributed in five sub-areas with 12 plants. Light interception methods with different measurement techniques were evaluated, as well as the planimetric, leaf discs and odeling methods. The estimate of area index of the forage cactus cladode by the modeling method was considered the most accurate one, for presenting precision coefficient values and accuracy above 0.90, as well as a performance varying from very good to excellent. However, its applicability depends on the use of estimated parameters or adjusted value equations. The methods of light interception and its derivations, leaf discs of medium cladodes and planimetry of medium cladodes are not recommended, due to their low precision and accuracy.
Thesagro: Palma forrageira
NAL Thesaurus: Opuntia.
Data Created: 2015-05-07
Appears in Collections:Artigo em periódico indexado (CPATSA)

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