Premium
Canopy Cover and Leaf Area Index Relationships for Wheat, Triticale, and Corn
Author(s) -
Nielsen David C.,
MiceliGarcia Juan J.,
Lyon Drew J.
Publication year - 2012
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj2012.0107n
Subject(s) - triticale , leaf area index , canopy , agronomy , plant canopy , poaceae , winter wheat , mathematics , zea mays , environmental science , biology , botany
Previously collected data sets that would be useful for calibrating and validating AquaCrop contain only leaf area index (LAI) data but could be used if relationships were available relating LAI to canopy cover (CC). The objective of this experiment was to determine relationships between LAI and CC for corn ( Zea mays L.), winter wheat ( Triticum aestivum L.), and spring triticale (× Triticosecale spp.) grown under dryland or very limited irrigation conditions. The LAI and CC data were collected during 2010 and 2011 at Akron, CO, and Sidney, NE, using a plant canopy analyzer and point analysis of above‐canopy digital photographs. Strong relationships were found between LAI and CC that followed the exponential rise to a maximum form. The relationship for corn was similar to a previously published relationship for LAI <2 m 2 m −2 but predicted lower CC for greater LAI. Relationships for wheat and triticale were similar to each other.