Publication AbstractClose Publication Abstract

Something Green in Your Pond

Madsen, J. D. (2011). Something Green in Your Pond. 5th National Aquaculture Extension Conference. Memphis, TN.

Abstract

While aquaculturists are very sophisticated when approaching the species they are growing or studying, this level of sophistication tends to drop off when confronting nuisance plant growth in their ponds. Some important considerations will make nuisance plant control much more predictable and successful. First, accurate identification of the plant species often will mean the difference between selecting an effective herbicide, and one that is ineffective. In the past, correct identifications meant sending a specimen to an expert. With the advent of e-mail and digital cameras, most species can be effectively identified if a suitable photo is taken. Accurate measurements of pond size and depth will also enhance herbicide effectiveness, or possibly save money. For floating and emergent plants, the pond area is the important dimension. For submersed applications, the pond volume is the critical dimension. Knowledge of the life history of some nuisance plant populations may also enhance successful control, as well as understanding the critical environmental requirements to form nuisance plant growth. Controlling seed producing plants before, rather than after, seed production will reduce potential nuisance problems in the long term. Aquaculture ponds are typically very high in nutrients, particularly phosphorus. High phosphorus content may lead to the growth of taste- and odor-causing algae. Some research has shown that manipulating the nitrogen:phosphorus ratio in the pond can alter the algae community of that pond, towards species that do not cause taste or odor problems.


Geosystems Research Institute  •  Contact GRI
Modified: May 17, 2016  •  WebMaster  •  Intranet