The information presented in this document may be out of date. The updated version is "What is the best watering and fertilization method?".


This publication describes two studies to determine the best fertilization schedule to optimize greenhouse rice production. We recommend twice weekly. This version is updated to confirm the unsuitability of constant fertilization. Photos of the plants growing under differing fertilizer schedules are provided.

This document is one entry in a series of questions and answers originally posted to the Purdue University Department of Horticulture & Landscape Architecture’s Plant Growth Facility Web site [] regarding best practices for rice plant growth in a greenhouse. Controlled studies were conducted with the goals of optimizing growth and yield; developing standardized methodology using readily available commercial materials; and providing recommendations for large-scale high-throughput production. Digital images showing treatment differences are included. A summary of recommendations; materials and methods description; and a reference list are available in separate documents.


Rice, Oryza, growing methods, greenhouse methods, greenhouse protocols, greenhouse best practices, Purdue methods, calcined clay, Turface

Date of this Version


Previous Versions

November 12, 2008