Identifying Crop and Orchard Growing Stages Using Conventional Temperature and Humidity Reports

Vegetation is a climate modifier: It primary modifier, such as the Amazon rain forest, or secondary agricultural fields of Pannonian lowlands in Central Europe. At periods winter crop spring renewal and start orchard growing season, enhanced evapotranspiration shifts energy balance partitions from sensible toward latent heat flux. This surface flux alteration converges into boundary layer, it can be detected daily variations air temperature humidity well range records. The time series micrometeorological measurements phenological observations dominant plant canopies conducted by Forecasting Reporting Service for Plant Protection Republic Serbia (PIS) are explored to select indices that best record signatures growth stages variations. From timing extreme values inflection points relative (R1 R2) normalized (DTR/Td), we identified following stages: (a) flowering (orchard)/spring season (crop), (b) full bloom (orchard)/development (c) maximum LAI reached/yield formation (orchard crop), (d) dormancy (orchard)/leaf drying (crop). average day year (DOY) plants corresponds obtained climatological recorded on representative station.