Growing Degree Day calculator

Growing Degree Days

Sign-up to receive email alerts when degree days hit a target threshold in your area.

Please register for a Syngenta account or login to view the latest growing degree information for your post code below or create your bespoke GDD...

*** IMPORTANT GDD INFORMATION ***

Please note that there currently appears instances where the on-line GDD calculation may be pulling incorrect location data. This may be apparent if the website is not using a previously recognised and cached address.

Work is ongoing and this error is planned to be resolved by Tuesday 30 April.

Please check the figures being displayed and it should be clearly evident if there is an error - temperatures of 28 - 30C are typically being incorrectly shown. 

The Turf Advisor app Growth Degree Data calculator remains fully operational, providing quick and easy access to data personalised for your location. You can download the free Turf Advisor app for iOS or android operating systems here.       

GDD now available on Turf Advisor

Growing Degree Days is one of the essential turf management models and tools available on the new Syngenta Turf Advisor app - download now and tailor your dashboard to support all your decisions.

Get more info and download links chevron_right

Register to set your GDD Thresholds now

Follow the link below to set thresholds and notifications - including your required bespoke GDD interval and base temperature.

You can set the 'Start' to any historical date, to retrieve previous GDD information.   

If you insert the application date of your most recent Primo Maxx II treatment as the start date, the system will automatically backdate the cumulative daily GDD from zero . 

Set your thresholds here chevron_right
help

Base temperatures used in calculating GDD vary depending on the type of plant or pest that is being monitored. This number represents the temperature at which you will typically begin to see plant or pest growth. The base temperature most often used in USA calculations is 10°C, because it is the temperature when active growth begins for most organisms. However, in the UK’s cooler environments many turf managers use 6°C, occasionally 0°C is used as the base temperature. For more information on which base temperature best suits your turf management plan, please contact your local Syngenta contact.
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Growing Degree Days for Bingley, UK
Total GDD for the date range of 03/27/2024 - 04/26/2024 : 58.7
Date Temp: High / Low Daily GDD YTD GDD
26/04/2024 6.8 °C / -3 °C 0.2 126.5
25/04/2024 7.5 °C / -1.1 °C 0.3 126.4
24/04/2024 8.8 °C / -1.9 °C 0.9 126
23/04/2024 9.9 °C / 1.4 °C 1.3 125.1
22/04/2024 9.2 °C / 3.9 °C 1.2 123.8
21/04/2024 10.7 °C / 3.9 °C 1.7 122.7
20/04/2024 11.2 °C / -2.7 °C 1.6 121
19/04/2024 9.1 °C / 2 °C 0.9 119.4
18/04/2024 8.6 °C / -0.7 °C 0.8 118.4
17/04/2024 7.8 °C / -1.9 °C 0.4 117.6
16/04/2024 9.2 °C / 2.3 °C 1.1 117.3
15/04/2024 5.7 °C / 3.9 °C 0 116.2
14/04/2024 9.2 °C / 2.7 °C 0.8 116.2
13/04/2024 13 °C / 3.5 °C 3.2 115.4
12/04/2024 17 °C / 8.7 °C 5.9 112.2
11/04/2024 15.8 °C / 8.3 °C 5.5 106.3
10/04/2024 11.1 °C / -0.5 °C 2.5 100.8
09/04/2024 9.6 °C / 3.8 °C 1.5 98.3
08/04/2024 13.5 °C / 6.4 °C 3.5 96.8
07/04/2024 10.3 °C / 6.2 °C 2.6 93.3
06/04/2024 17.7 °C / 10.2 °C 6.8 90.6
05/04/2024 12.4 °C / 5.7 °C 3.9 83.8
04/04/2024 8.5 °C / 5.8 °C 1.1 79.9
03/04/2024 11.2 °C / 5.6 °C 1.9 78.8
02/04/2024 10.8 °C / 3.9 °C 2.3 76.9
01/04/2024 8.1 °C / 4.3 °C 0.6 74.6
31/03/2024 12.3 °C / 2.1 °C 2.1 74
30/03/2024 11.5 °C / 2 °C 1.7 71.9
29/03/2024 10 °C / 3.2 °C 1.4 70.2
28/03/2024 9 °C / 0.6 °C 0.5 68.8
27/03/2024 8.6 °C / 0.7 °C 0.5 68.4

ERA5T (30 km)

ERA5T is the fifth generation ECMWF reanalysis for the global climate and weather historical data. The spatial resolution of the dataset is around 30km and it is available across global with lag time of 10 days. We gap fill the 10 days duration with numerical weather forecast model called NEMSGLOBAL.
ECMWF periodically uses its models and data assimilation systems to 'reanalyze' archived observations, creating global data sets describing the recent history of the atmosphere, land surface, and oceans.
Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using the laws of physics.

Weather historical data provided by meteoblue
Primo Maxx Reduce mowing

Start your Primo Maxx II programme with GDD alerts

The GDD threshold alerts emailed to you indicate when you can tailor your Primo Maxx II application strategy.

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Syngenta Turf website registration

To get all the full functionality of Growing Degree Day calculator thresholds - along with other premium features on the website - you need to register an account.

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