Tomatoes, corn, leafy greens or berries – Masterblend has the fertilizer blend to optimize production. For crops under cover or open field, we offer a range of water soluble and slow-release formulas for each and every growing challenge. Free of excess salts and other chemical impurities which can damage roots and foliage, the balanced nutrition and pure composition ensure optimum growth rates and predictable fruiting response for your greenhouse and field crops.