Table 1.

Environmental predictor variables used in the prediction models.

Acronym	General description
P.V, P.F, P.G	Accumulated precipitation + irrigation (mm) by growth period
FreqP5.V, FreqP5.F, FreqP5.G	Frequency of days with more than 5 mm precipitation by growth period
MeanT.V, MeanT.F, MeanT.G	Average of daily mean temperature (°C) by growth period
MinT.V, MinT.F, MinT.G	Average of minimum daily temperature (°C) by growth period
MaxT.V, MaxT.F, MaxT.G	Average of maximum daily temperature (°C) by growth period
GDD.V, GDD.F, GDD.G	Cumulative growing degree days, Base 10°C (°C) by growth period
Photothermal.Time.V, Photothermal.Time.F, Photothermal.Time.G	Cumulative photothermal time (GDD x Day Length) by growth period
FreqMaxT30.V, FreqMaxT30.F, FreqMaxT30.G	Frequency of days with maximum temperature above 30°C by growth period
FreqMaxT35.V, FreqMaxT35.F, FreqMaxT35.G	Frequency of days with maximum temperature above 35°C by growth period
St30.V, St30.F, St30.G	Sum of the daily maximal temperatures above 30°C (°C)
CumSumET0.V, CumSumET0.F, CumSumET0.G	Accumulated reference evapotranspiration (mm), under standard conditions, according to the FA0-56 Penman-Monteith methodology for each growth period
CumDailyWaterBalance.V, CumDailyWaterBalance.F, CumDailyWaterBalance.G	Cumulative daily water balance, i.e., daily precipitation + irrigation - daily reference evapotranspiration (mm)
Sdrad.V, Sdrad.F, Sdrad.G	Accumulated incoming daily solar radiation (MJ m-2 day-1) by growth period
SandProp.SC	Sand composition (%)
Silt.Prop.SC	Silt composition (%)
ClayProp.SC	Clay composition (%)
OM.SC	Percentage of organic matter (%)

The suffixes refer to: V, vegetative period; F, flowering period; G, grain fill period; SC, soil covariate.