Day Degree Report

Estimate the influence current maximum and minimum temperatures are having on cotton crop development.

Read about our selection process for including tools on Climate Kelpie

 

Who this tool is for

Australian cotton growers

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Questions this tool answers

  • What influence is current maximum and minimum temperatures having on crop development?
  • How have recent extremes (hot or cold days) affected the development of my crop?
  • What is the average crop development I can expect for my area?

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What this tool does

Recording the average daily temperature [day degrees] is an important a measure used by cotton growers to identify the progress of a crop towards a development stage (e.g. first square, peak flowering, open boll).

Based on local daily maximum and minimum temperatures in a specific location, the Day Degree Report can indicate the percentage of crop development expected on a particular day.

The sum of these daily values can help you understand a crop’s progress towards a development stage.

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Inputs

  • Your nearest weather station
  • A date range 

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Outputs

The Day Degree Report gives you an Excel file with a:

  1. summary report containing long-term average data
  2. detailed report showing daily accumulated Day Degree for the date range you specified, compared to specified years
  3. growth target report presenting the min, max, average and median temperatures for each day during the data range and when a particular cotton development stage is expected.

Within the tool, you can also change the:

  • Day Degree accumulation when a cold shock (less than or equal to 11 °C) occurs
  • default number of Day Degree for the growth target report
  • years that are presented on the detailed report.

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Reliability

Crop development estimates are based on daily maximum and minimum temperatures from the Bureau of Meteorology.

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History

The Day Degree Report was developed and is maintained by CSIRO. It is a part of a group of CSIRO web tools, designed for Australian cotton growers and consultants, called CottASSIST.

CottASSIST aims to deliver the latest cotton research and integrate up-to-date information and assist with cotton management decisions. Developed by CSIRO, it is supported by the Cotton Research and Development Corporation and the former Cotton Catchment Communities CRC.

Climate data is provided by SILO, courtesy of the Bureau of Meteorology.

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Support available

Support is available from Loretta Clancy at CottASSIST

Email: cottassist.support@csiro.au

Phone: 02 6799 1547

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Where to get it

The tool is available on the CottASSIST website. You need to register and create a free CottASSIST account to use the tool.

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Cost

Free upon registering

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