This publication describes our experiences controlling mites while conducting experiments to optimize greenhouse corn production. Controlled studies were not conducted, but we recommend cultural practices of water spray-offs of leaf undersides and the stripping lower leaves as the crop ages. Also recommended are applications of beneficial insect Phytoseiulus persimilis at very high rates. The rates are an update of our previous publication. Photos of the pest and cultural practices 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 (http://www.hort.purdue.edu/hort/facilities/greenhouse/CornMethod.shtml) regarding best practices for corn 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 both high-tech and low-tech facilities. Digital images showing treatment differences are included, as well as statistical analysis of data. A summary of recommendations; materials and methods description; and a reference list are available in separate documents.
corn, maize, Zea mays, growing methods, greenhouse methods, greenhouse protocols, greenhouse best practices, Purdue methods, calcined clay, porous ceramic, Turface, tassel storage, pollen storage, automated irrigation, drip irrigation, growth regulator
Date of this Version
Eddy, Robert and Hahn, Daniel T., "Optimizing Greenhouse Corn Production: How can Two-Spotted Spider Mites be Controlled?" (2012). Purdue Methods for Corn Growth. Paper 4.