This document discusses best practices for greenhouse irrigation. It notes that both under-watering and over-watering can harm plants, and that the optimal practice is to water properly based on plant needs. It also discusses factors like water quality, including measuring electrical conductivity and salt levels to avoid drought stress, as well as alkalinity, hardness, and the proper calcium to magnesium ratio. Finally, it briefly outlines different types of irrigation systems used in greenhouses.

1. Greenhouse Irrigation Practices The most important and often undervalued practice in controlled environment production.

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