LGPSuit | R Documentation |
This function determines the suitability classes for length of growing period (LGP) requirements for selected agricultural crops and forest trees
LGPSuit(value, crop)
value |
Input length of growing period (LGP) in days. |
crop |
The crop of interest for which length of growing period (LGP) suitability class is sought |
The input value can be map or an integer value of LGP in days
The output is LGP suitability class for the crop. The output is an integer for suitability class: 1- highly suitable; 2 - moderately suitable; 3 - marginally suitable; 4 - currently not suitable; 5 - not suitable
If the input value is raster map, then the output will also be a raster map of LGP suitability for the crop of interest
Christian Thine Omuto
Sys, C., Van Ranst, E., Debaveye, J. and Beerneaert, F.1993. Land evaluation: Part III: Crop requirements. Development Cooperation, Belgium.
Naidu, L.G.K., Ramamurthy, V., Challa O., Hegde, R. and Krishnan, P. 2006. Manual, Soil-site Suitability Criteria for Major Crops, National Bureau of Soil Survey and Land Use Planning, ICAR, Nagpur, India
FAO Crop Suitability Requirements: http://ecocrop.fao.org/ecocrop/srv/en/home
suitability
, PHSuit
, fertilitySuit
library(sp)
LGPSuit(138,"cotton")
newmap = data.frame(LGP = c(1:6,158,160,211),
lon = c(1,1,1,2,2,2,3,3,3),
lat = c(rep(c(0, 1.5, 3),3)))
coordinates(newmap) = ~lon+lat
gridded(newmap) = TRUE
newmap = as(newmap, "SpatialGridDataFrame")
newmap$LGPmillet=LGPSuit(newmap$LGP,"millet")
spplot(newmap["LGPmillet"], main="LGP suitability map for finger millet")
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