EstimateBreed (version 1.0.2)

lai: 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)

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

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.

Author

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))