TY - GEN
T1 - Principal component analysis as decisionsupport tool in Agriculture for factors-yield relations
AU - Jesus, J.
AU - Panagopoulous, T.
AU - Blumberg, D. G.
AU - Ben-Asher, J.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - Principal component analysis was used for explanation of production factors-yield relations. In this research, raster images of an organic field of wheat (Triticum turgidum var. durum), containing spatial information of several crop parameters were separated into two groups. The first group containing rasters of production factors (NO3 -, soil water content (SWC), Soil Specific Area (SSA) and Carbon flux) and a second group with yield (Leaf area Index (LAI), number, of grains per kernel, and stems; weight of 1000 grains, kernel and stems). For each group it was calculated their Principal Components (PC). The first PCs of the production factors were SWC and SSA, while for the first PCs of yield were LAI, weight of stems and kernel. Since the r2 between the PC1 of the two groups was 0.76 it was shown that SWC and SSA were the main limiting factors in the production.
AB - Principal component analysis was used for explanation of production factors-yield relations. In this research, raster images of an organic field of wheat (Triticum turgidum var. durum), containing spatial information of several crop parameters were separated into two groups. The first group containing rasters of production factors (NO3 -, soil water content (SWC), Soil Specific Area (SSA) and Carbon flux) and a second group with yield (Leaf area Index (LAI), number, of grains per kernel, and stems; weight of 1000 grains, kernel and stems). For each group it was calculated their Principal Components (PC). The first PCs of the production factors were SWC and SSA, while for the first PCs of yield were LAI, weight of stems and kernel. Since the r2 between the PC1 of the two groups was 0.76 it was shown that SWC and SSA were the main limiting factors in the production.
KW - Agriculture
KW - GRASS
KW - Ordinary kriging
KW - Principal component analysis
KW - Spatial variability
UR - http://www.scopus.com/inward/record.url?scp=84923927643&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84923927643
T3 - CISTI 2006 - Actas da 1a Conferencia Iberica de Sistemas e Tecnologias de Informacao
SP - 141
EP - 155
BT - CISTI 2006 - Actas da 1a Conferencia Iberica de Sistemas e Tecnologias de Informacao
A2 - Cunha, Maria Manuela
A2 - Rocha, Alvaro
PB - Associacao Iberica de Sistemas e Tecnologias de Informacao
T2 - 1a Conferencia Iberica de Sistemas e Tecnologias de Informacao, CISTI 2006 - 1st Iberian Conference on Information Systems and Technologies, CISTI 2006
Y2 - 21 June 2006 through 23 June 2006
ER -