(1)  If a fertilizer containing biuret may be used for foliar application, the concentration of biuret is to be shown on the label, invoice or delivery docket as a percentage of the weight of the fertilizer.

(2)  Subregulation (1) does not apply to the label, invoice or delivery docket for a fertilizer which is marked "This product is not to be used for foliar application".

(3)  If a fertilizer contains 10 grams of biuret but not more than 20 grams of biuret per kilogram of total nitrogen, the label, invoice or delivery docket is to contain the following warning:

WARNING – Repeated foliar application of this fertilizer may cause damage to citrus.

(4)  If a fertilizer contains more than 20 grams of biuret but not more than 30 grams of biuret per kilogram of total nitrogen, the label, invoice or delivery docket is to contain the following warning:

WARNING – This fertilizer is not recommended for repeated foliar application on annual or perennial horticultural crops.

(5)  If a fertilizer contains more than 30 grams of biuret per kilogram of total nitrogen, the label, invoice or delivery docket is to contain the following warning:

WARNING – This fertilizer is not recommended for foliar application.

(6)  In this regulation –

foliar application means application to the foliage of a plant.