Campbells Nitro Lo-Bi Urea only contains 0.4% biuret*. This makes it a low biuret Urea suitable for a wide range of foliar Nitrogen applications in horticulture and agriculture.

Nutrient Form:

The Nitrogen in Nitro Lo-Bi is in the form of Urea, specifically with a low Biuret content. Biuret is present as an impurity of Urea, formed during the manufacturing process, and high levels can be harmful for foliar application, possibly causing plant damage.

Advantages:

Campbells Nitro Lo-Bi Urea is recommended for foliar applications as it has a low Biuret concentration, making it safer to use.

• Standard Urea has a higher Biuret concentration, which can be toxic to plants, especially if applied to foliage in high concentrations
• Plants are not able to readily metabolise Biuret and therefore the presence of elevated levels in plant tissue causes growth reduction and plant damage
• In sensitive crops (most horticultural crops) or perennial crops (where repeat applications with Biuret containing Urea can accumulate), the selection of Nitro Lo-Bi Urea is strongly advisable

Application:

Campbells Nitro Lo-Bi Urea as a foliar spray can provide a very quick Nitrogen response in plants. Foliar Lo-Bi Urea can be useful during periods of very high crop demand or when root Nitrogen uptake is restricted. Lo-Bi Urea is also sometimes used in conjunction with foliar applied trace elements, such as Campbells Bud-wiser.

Rates:

General rates vary dramatically across horticultural crops compared to broadacre alternatives. For general Tree crop rates, apply at a rate of 0.5kg/100L of water, but for general Vegetable rates this can be increased to 1.0kg/100L of water. In Broadacre crops like Cotton, rates may be as high as 10 – 15kg/100L of water, and Cereals at 20 – 30 kg/100L, as these are less sensitive crops. Before application, seek advice from your Campbell’s distributor or your local agronomist.