Nutrient Solution Formulation for Hydroponic (Perlite, Rockwool, NFT) Tomatoes in Florida: HS796/CV216, rev. 9/2018

Abstract

This document is about managing fertilizer programs for crop production, focusing on the 16 essential nutrients plants require. For Florida greenhouse vegetable producers, key elements to manage include nitrogen (N) and potassium (K), as their imbalances can cause plant disorders and yield issues. The document provides specific fertilizer recommendations for tomatoes, applicable to various production systems.

It highlights the importance of starting with a water quality test to tailor nutrient solutions accurately. Two methods for supplying nutrients are discussed: pre-mixed products and grower-formulated solutions, each with its own pros and cons. The document also addresses the water-fertilization relationship in hydroponic systems, emphasizing the need for frequent irrigation and proper nutrient concentration adjustments. The goal is to help growers optimize fertilization, reduce costs, and minimize environmental impact. First published Oct. 1990.