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Found 10 records similar to Crop (corn) heat units

Federal

Crop/Corn Heat Units (CHU) is a temperature-based index often used by farmers and agricultural researchers to estimate whether the climate is warm enough to grow corn. Daily crop heat units are calculated from minimum and maximum temperatures with separate calculations for day and night. The daytime relationship sets the minimum at 10 C for growth up to a maximum of 30 C, beyond which growth slows.

These values are calculated across Canada in 10x10 km cells.

Last Updated: Jun. 6, 2022
Date Published: Oct. 6, 2021
Organization: Agriculture and Agri-Food Canada
Formats: PDF ASCII Grid
Keywords:  CHU, Farmlands, Temperature, Agriculture
Federal

Heat Wave represents the consecutive number of days (April 1 – October 31) where the maximum daily temperature is greater than 25 or 30 degrees respectively. Heat wave products are only generated during the Growing Season, April 1 through October 31.

Last Updated: May 4, 2022
Date Published: Jan. 14, 2019
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF HTML ESRI REST GeoTIF
Keywords:  agclimate, HW, Farmlands, Agriculture, Crops, Precipitation, Temperature
Federal

Maximum Temperature represents the highest recorded temperature value (°C) at each location for a given time period. Time periods include the previous 24 hours and the previous 7 days from the available date where a climate day starts at 0600UTC.

Last Updated: May 4, 2022
Date Published: May 5, 2017
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF HTML ESRI REST GeoTIF
Keywords:  TX, agclimate, Farmlands, Crops, Agriculture, Temperature, Precipitation
Federal

Temperature is a key factor affecting the physiological development of field crops as well as crop yield and agricultural product quality achieved during the growing season. Crop responses to the temperature are characterized by three important cardinal temperature indices; the cardinal minimum temperature, maximum cardinal temperature, and optimum temperature for field crop production at which the plant growth and development can start, stop, and proceed at the maximum rate respectively. Agriculture is an important primary production sector in Canada. Agricultural production, profitability, sustainability and food security depend on many agrometeorological factors.

Last Updated: Jul. 27, 2021
Date Published: Nov. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: PDF GeoTIF
Keywords:  Extreme Weather Indices, Climate, Meteorology, Agriculture, Temperature, Farmlands, Weather forecasts, Weather
Federal

The Probability (likelihood) of heat wave days for warm season crops occurring. Heat wave days: The number of days in the forecast period with a maximum temperature above the cardinal maximum temperature, the temperature at which crop growth ceases. This temperature is 35°C for warm season crops (dhwwarmprob). Week 1 and week 2 forecasted probability is available daily from April 1 to October 31.

Last Updated: Sep. 13, 2021
Date Published: Nov. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: PDF GeoTIF
Keywords:  Extreme Weather Indices, Meteorology, Climate, Agriculture, Temperature, Farmlands, Weather forecasts, Weather
Federal

Minimum Temperature represents the lowest recorded temperature value (°C) at each location for a given time period. Time periods include the previous 24 hours and the previous 7 days from the available date where a climate day starts at 0600UTC.

Last Updated: May 4, 2022
Date Published: May 5, 2017
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF HTML ESRI REST GeoTIF
Keywords:  TI, agclimate, Agriculture, Farmlands, Crops, Precipitation, Temperature
Federal

The Probability (likelihood) of heat wave days for cool season crops occurring Heat wave days: The number of days in the forecast period with a maximum temperature above the cardinal maximum temperature, the temperature at which crop growth ceases. This temperature is 30°C for cool season crops (dhwcoolprob). Week 1 and week 2 forecasted probability is available daily from April 1 to October 31. Week 3 and week 4 forecasted probability is available weekly (Thursday) from April 1 to October 31.

Last Updated: Sep. 13, 2021
Date Published: Nov. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: PDF GeoTIF
Keywords:  Extreme Weather Indices, Meteorology, Agriculture, Climate, Temperature, Farmlands, Weather forecasts, Weather
Federal

Heat Wave Days are the number of days in the forecast period with a maximum temperature above the cardinal maximum temperature, the temperature at which crop growth ceases (dhw_cool). This temperature is 30°C for cool season crops. Week 1 and week 2 forecasted index is available daily from April 1 to October 31. Week 3 and week 4 forecasted index is available weekly (Thursday) from April 1 to October 31.

Last Updated: Sep. 14, 2021
Date Published: Nov. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: PDF GeoTIF
Keywords:  Extreme Weather Indices, Climate, Agriculture, Temperature, Farmlands, Weather forecasts, Weather, Meteorology
Federal

Heat Wave Days are the number of days in the forecast period with a maximum temperature above the cardinal maximum temperature, the temperature at which crop growth ceases. This temperature is 35°C for warm season crops (dhw_warm). Week 1 and week 2 forecasted index is available daily from April 1 to October 31. Week 3 and week 4 forecasted index is available weekly (Thursday) from April 1 to October 31.

Last Updated: Sep. 13, 2021
Date Published: Nov. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: PDF GeoTIF
Keywords:  Extreme Weather Indices, Temperature, Climate, Weather forecasts, Weather, Farmlands, Meteorology, Agriculture
Federal

The Crop Stress Index is the ratio of actual evapotranspiration (AET) to potential evapotranspiration (PET) express as:

CSI = 1-(AET/PET)

AET and PET are calculated within the Versatile Soil Moisture Budget (VSMB) model using temperature and precipitation data and a crop-specific biometeorological time scale model to estimate growth stage (Robertson, 1968), with crop specific phenological and crop water extraction coefficients taken from Chipanshi et al 2013. The WDI ranges between 0 and 1, with a value closer to 1 indicating higher stress Crop Stress Index is modelled for each climate station using measured precipitation and temperature

Last Updated: Nov. 15, 2021
Date Published: Jun. 1, 2018
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF ESRI REST
Keywords:  Agriculture, Crops
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