Home |
Search |
Today's Posts |
#16
|
|||
|
|||
Insecticides with Plant Oils as Active Ingredients
Very limited OMRI approval, pyrethrum† Diatect V w/ green OMRI-Listed sticker R Diatect International Inc PyGanic Crop Protection EC 1.4 (reformulation) R MGK Company PyGanic Crop Protection EC 1.4 II R MGK Company PyGanic Crop Protection EC 5.0 II R MGK Company On Fri, 16 May 2003 19:40:02 GMT, animaux wrote: On Fri, 16 May 2003 18:44:35 GMT, "Stephen M. Henning" wrote: animaux wrote: Permethrin is a pyrethroid which is not natural. Pyrethrum is found in ONE plant. According to Oregon State University, my alma mater: The term "pyrethrins" refers to the natural insecticides commercially derived from chrysanthemum flowers; "pyrethroids" are the synthetic chemicals, and "pyrethrum" is a general name covering both compounds. Pyrethrins are natural insecticides extracted from several species of chrysanthemums. The flowers of the plant are harvested shortly after blooming and are either dried and powdered or the oils within the flowers are extracted with solvents. Two pyrethrins are most prominent, pyrethrin-I and pyrethrin-II. The pyrethrins have another four different active ingredients, Cinerin I and II and Jasmolin I and II. It is a bit presumptuous to assume that none of these chemicals or other pyrethrins don't occur in other plants found in nature. Many plants have never been examined and even more plants are discovered every year. Ref: http://ace.ace.orst.edu/info/extoxnet/pips/pyrethri.htm Oh, I was not talking about pyrethrins. I was talking about PeRmethrin. It has nothing to do with pyrethrum or pyrethrins. Pyrethroids are not naturally occuring. "Nature, left alone, is in perfect balance. Harmful insects and plant diseases are always present, but do not occur in nature to an extent which requires the use of poisonous chemicals. The sensible approach to disease and insect control is to grow sturdy crops in a healthy environment." Masanobu Fukuoka, One Straw Revolution--1978 |
#17
|
|||
|
|||
Insecticides with Plant Oils as Active Ingredients
I don't use any pesticides other than biological. I have no need for pyrethrum.
When we spoke we agreed on leave it and the beneficials will come! v On Fri, 16 May 2003 16:08:48 -0700, Tom Jaszewski wrote: Very limited OMRI approval, pyrethrum† Diatect V w/ green OMRI-Listed sticker R Diatect International Inc PyGanic Crop Protection EC 1.4 (reformulation) R MGK Company PyGanic Crop Protection EC 1.4 II R MGK Company PyGanic Crop Protection EC 5.0 II R MGK Company On Fri, 16 May 2003 19:40:02 GMT, animaux wrote: On Fri, 16 May 2003 18:44:35 GMT, "Stephen M. Henning" wrote: animaux wrote: Permethrin is a pyrethroid which is not natural. Pyrethrum is found in ONE plant. According to Oregon State University, my alma mater: The term "pyrethrins" refers to the natural insecticides commercially derived from chrysanthemum flowers; "pyrethroids" are the synthetic chemicals, and "pyrethrum" is a general name covering both compounds. Pyrethrins are natural insecticides extracted from several species of chrysanthemums. The flowers of the plant are harvested shortly after blooming and are either dried and powdered or the oils within the flowers are extracted with solvents. Two pyrethrins are most prominent, pyrethrin-I and pyrethrin-II. The pyrethrins have another four different active ingredients, Cinerin I and II and Jasmolin I and II. It is a bit presumptuous to assume that none of these chemicals or other pyrethrins don't occur in other plants found in nature. Many plants have never been examined and even more plants are discovered every year. Ref: http://ace.ace.orst.edu/info/extoxnet/pips/pyrethri.htm Oh, I was not talking about pyrethrins. I was talking about PeRmethrin. It has nothing to do with pyrethrum or pyrethrins. Pyrethroids are not naturally occuring. "Nature, left alone, is in perfect balance. Harmful insects and plant diseases are always present, but do not occur in nature to an extent which requires the use of poisonous chemicals. The sensible approach to disease and insect control is to grow sturdy crops in a healthy environment." Masanobu Fukuoka, One Straw Revolution--1978 |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Herbicides/weed killers - active ingredients? Effectiveness? | Gardening | |||
Herbicides/weed killers - active ingredients? Effectiveness? | Australia | |||
Herbicides/weed killers - active ingredients? Effectiveness? | Plant Science | |||
Ecoaromuz organic herbs and essential oils | Plant Biology |