CEMEX is crop supplement by MaxGrow with zinc 7%

Zinc (Zn) is one of the eight essential micronutrients. It is needed by plants in small amounts, but yet crucial to plant development.
In plants, zinc is a key constituent of many enzymes and proteins. It plays an important role in a wide range of processes, such as growth hormone production and internode elongation.
Visual observation can be a quick diagnostic tool to identify zinc deficiencies. However, it requires knowledge and expertise, as symptoms may be confusing. In addition, once visual symptoms appear, yield loss has already occurred.
Regular soil or plant testing is the best practice to determine if zinc application is required and to ensure that zinc does not accumulate in the soil to undesirable high levels.
DTPA-extraction is the most commonly used soil test to determine available zinc levels in soils.
Zinc fertilizers can be applied to zinc-deficient soils, once deficiency is identified. The most common fertilizer sources of Zinc are Zinc chelates (contain approximately 14% zinc), Zinc Sulfate (25-36% zinc) and zinc oxide (70-80% Zinc), where Zinc Sulfate is the most commonly used source of zinc.
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