We are searching data for your request:
Tall indoor or large house plants are known to be home to microorganisms, such as bacteria, fungi, and protozoa, all of which can affect the overall health of plant or the health of an animal who drinks or eats its leaves or roots. For instance, a bacterial or fungal contamination in a plant can lead to excessive toxin accumulation in that plant, which, in turn, can deliver an undesirable human health risk. Certain protozoa can also infect plants causing the plants to be unhealthy.
In order to minimize the presence of harmful microorganisms in plants, the use of chemicals and antibiotics is often employed. Unfortunately, these chemicals and antibiotics are not selective in their action, and can be harmful to humans as well as other animals and plants.
Another approach to controlling the presence of harmful microorganisms in plants is through the use of pesticides. Unfortunately, the use of pesticides on plants is also not selective in nature. For example, certain plants can be prone to an allergic reaction when exposed to certain pesticides. As such, the use of pesticides on plants needs to be performed with caution, and also requires that the pesticides be used responsibly.
In addition the microorganisms, fungi, and bacterial residue in the soil where plants are grown or cultivated may also be detrimental to the plants' health. In order to control the presence of these microorganisms in the soil, certain pesticides may be added to the soil, which may allow the pesticides to be absorbed by the plants, and thus retard the growth of undesirable microorganisms in the soil.Unfortunately, such approaches are not selective in nature, and consequently the pesticides may also be detrimental to humans and other animals, and therefore, are not permitted to be used on the soil or water where these pesticides are applied.
In addition to the pesticide approaches described above, the use of copper in the form of copper sulfate as a fungicide has been widely used. However, copper has also been shown to be harmful to plants and to humans, and therefore, the use of copper as a fungicide has been voluntarily forbidden in the United States since 1996.
The use of copper sulfate for controlling the fungi in or on aquatic plants has also been the subject of much research, and a variety of copper sulfate formulations have been developed in the past. For example, U.S. Pat. No. 6,258,292 to D'Amato et al. teaches an aqueous fungicidal composition comprising at least one fungicide selected from the group consisting of copper, mancopper, zinc, manzinc, manganese, and mixtures thereof, and at least one chelating agent selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), ethylenediamine-N,N′-disuccinic acid (EDDS), iminodiacetic acid, and mixtures thereof. The composition may be applied to aquatic plants or used in a water treatment process.
U.S. Pat. No. 6,867,914 to D'Amato teaches that in addition to the copper sulfate fungicides described in U.S. Pat. No. 6,258,292, other metal salts such as zinc sulfate, copper sulfate, manganese sulfate, and mixtures thereof, can be used to control fungal plant diseases. Likewise, U.S. Published Patent Application No. 2005/0058519 discloses that of a broad range of chelating agents including iminodiacetic acid (IDA), iminodiacetic acid alkyl esters, hydroxyethylidene diphosphonic acid (HEDP), amino phosphonates, aminopolyphosphonic acids, diethylenetriaminepentaacetic acid (DTPA