Author Archives: Neil S. Mattson

About Neil S. Mattson

Neil Mattson is an assistant professor and floriculture Extension specialist in the Department of Horticulture at Cornell University. You can eMail him at neil.mattson@cornell.edu.

Hand Watering, Booms, Sprinklers Or Drip?

The amount of water that can be held by the substrate in a given container with a specific irrigation method is the effective water-holding capacity (EWHC). It may be desirable to maintain the moisture content of the medium below EWHC in order to regulate plant growth or reduce the risk of soil-borne diseases. Overall, it

Soluble Salts: Don’t Get Burned

As discussed in our previous article last month, high soluble salts can accumulate in the root zone when there is poor quality (high salt) irrigation water or excessive fertilizer input. Understanding which bedding plants are most sensitive can aid in crop selection and in management practices such as leaching. At Cornell University we conducted an

Salts In Greenhouse Crops: Don’t Get Burned

Greenhouse bedding plants have been traditionally grown with high quality low-salt irrigation water because plants can be damaged when salts build up in the root zone. Because water is becoming a limiting factor in several parts of the United States and across the world, it is important to understand how floriculture crops respond to poor

Ethylene In The Greenhouse

Plants exposed to high concentration (> 0.05 ppm) ethylene exhibit a range of familiar symptoms, such as leaf yellowing, epinasty or abscission, and flower senescence (see Figure 1) and abscission. Usually, low concentrations (< 0.05 ppm) of ethylene precede high concentrations. Imagine a slightly malfunctioning heater becoming progressively worse. So, plant symptoms of low concentration