Jamieson Brothers JBA Blight Guard for the prevention of foliar blight in tomatoes and potatoes - 500ml concentrate

JBA Blight Guard

A brand new product developed for the prevention of foliar blight in tomatoes and potato blight. This effective treatment offers protection during high blight risk forecast periods, helping to reduce infection caused by pathogens such as Phytophthora infestans and Pythium ultimum.

This is a 100% natural product with no chemicals and is safe to use in your garden. It provides an effective blight prevention option without the use of synthetic fungicide treatments.

DIRECTIONS FOR USE:

SHAKE WELL BEFORE USE.

Simply add 40ml of JBA Blight Guard concentrate to 20 litres of water and either spray onto the foliage or apply with a watering can. The measuring chamber holds approx 40ml of concentrate.

Spraying is considered to be the best method of application, as you need to coat both the upper and underside of leaves to protect against threats like early blight, late blight, and Wet Weather Blight.

The solution can also be made up in smaller batches of 10ml to 5 litres of water.

Use this product every 7 days during June – September to help manage blightspy, blight watch, and blightspy alerts. For heightened protection, monitor Smith Periods and The Hutton Criteria as indicators for when application is most critical.

If a Smith Period is forecast — a key trigger for blightwatch alerts — apply JBA Blight Guard at the onset to strengthen plant defences.

Use any mixed solution within 48 hours. Allow 24 hours after application before consuming any sprayed crops.

Avoid spraying directly onto tomatoes to prevent scorch marks.

JBA Blight Guard supports defence against Ascochyta Blight, Pythium aphanidermatum, and Ascochyta gossypii, though as with all products, complete immunity from blight cannot be guaranteed. It is a prevention tool, not a cure.

SMITH PERIOD:

The conditions under which blight infections occur are known as a "Smith Period." This is defined as a 48-hour period with minimum temperatures of 10°C or higher, and relative humidity exceeding 90% for at least 11 hours on two consecutive days. These periods — also reflected in blightspy and blightwatch tools — are key indicators used in blight risk forecast systems.