lai: Leaf Area Index (LAI)

In EstimateBreed: Estimation of Environmental Variables and Genetic Parameters

Leaf Area Index (LAI)

Description

Utility function for estimating crop LAI

Usage

lai(GEN, W, L, TNL, TDL, crop = "soy", sp = 0.45, sden = 14, verbose = TRUE)

Arguments

GEN	The column with the genotype name
W	The column with the width of the leaf (in meters).
L	The column with the length of the leaf (in meters).
TNL	The column with the total number of leaves.
TDL	The column with the total number of dry leaves.
crop	Crop sampled. Use 'soy' for soybean and 'maize' for maize, 'trit' for wheat, 'rice' for rice, 'bean' for bean, 'sunflower' for sunflower, 'cotton' for cotton, 'sugarcane' for sugarcane, 'potato' for potato and 'tomato' for tomato.
sp	Row spacing (Standard sp=0.45).
sden	Sowing density, in plants per linear meter (standard sden=14).
verbose	Logical argument. Runs the code silently if FALSE.

Value

Returns the accumulated leaf area, the potential leaf area index (considering the total number of leaves) and the actual leaf area index (making the adjustment considering the number of dry leaves) for each genotype

Author(s)

Willyan Junior Adorian Bandeira

Ivan Ricardo Carvalho

Murilo Vieira Loro

Leonardo Cesar Pradebon

Jose Antonio Gonzalez da Silva

References

Meira, D., Queiroz de Souza, V., Carvalho, I. R., Nardino, M., Follmann, D. N., Meier, C., Brezolin, P., Ferrari, M., & Pelegrin, A. J. (2015). Plastocrono e caracteres morfologicos da soja com habito de crescimento indeterminado. Revista Cultivando o Saber, 8(2), 184-200.

Examples

library(EstimateBreed)

data("leafarea")
#Crop selection
soy_lai<-with(leafarea,lai(GEN,C,L,TNL,TDL,crop="soy"))

#Changing row spacing and sowing density
maize_lai<-with(leafarea,lai(GEN,C,L,TNL,TDL,crop="maize",sp=0.45,sden=4))

EstimateBreed documentation built on April 4, 2025, 5:37 a.m.