Searles Bluestone (Copper Sulphate) 500g Safe to use on edible

Safe to use on edible crops

Active Constituents: 750g/kg Mancozeb

Patterned release: available in various release patterns exactly tailored to crop requirements

The longevity of Osmocote Exact Standard 3-4M is affected by temperature

When quickly heated to above 871 degrees Celsius

Searles Bluestone (Copper Sulphate) 500g Safe to use on edibleCopper deficiency can occur in all types of soils, particularly in sandy or peaty soils. Copper is important to citrus trees and vegetables. Deficiency symptoms include yellowing of young leaves with green spots at the end of veins. Young leaves can also be curled and spurs stunted. Quick acting.