Method for producing working reagent and for biological prevention or control - Patents

Method for producing working reagent and for biological prevention or control

Agent: The Webb Law Firm, P.C. - Pittsburgh, PA, US
Inventors: Shih-Pan-Yu Hsieh, Rui-Zhi Huang
Class: 424093400 (USPTO), (Intl Class)
#20060159661
07/20/06
The present invention provides a method for an agent to be used in biocontrol and for preventing plants from suffering from disease. The method includes providing an agent having a microorganism object therein for controlling and preventing a plant lesion, making the agent contact a plant, and releasing the microorganism object from the agent to act on the plant to control and prevent the plant lesion. In practice, the microorganism agent is applied in a paddy rice system to make the agent contact the plant and release the microorganism object on the plant to control and prevent plant disease.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] The present invention relates to a method for producing a microorganism agent to achieve the purpose of biocontrol, and also to a method and for protecting the plants.
[0003] Traditionally, farmers apply agricultural chemicals to prevent plants and crops from suffering from the diseases, which will increase the yield of the crops and reduce the probability of suffering from the diseases. When the agricultural chemical is applied in a high concentration or in the late harvesting period, it will cause the residue of agricultural chemical on the crop. An acute poison will cause damage to the human health by accumulating the high concentration of agricultural chemical in the body.
[0004] Now, using the antagonistic microorganism for biocontrol makes the application of the non-agricultural chemical to be possible in controlling and preventing the plant diseases. In general situation, it is operated by widely spraying the controlling microorganism over the cultivation area to prevent and control the plant diseases. But the spraying method is labor extensive work in order to have even spray the microorganism to the right place of the pathogen invading site of the plant. To take the Rhizoctonia solani, the casual organism of rice sheath blight disease of the paddy rice as an example, the invading sites are usually on the leaf sheath. In order to have effective spraying on leaf sheath, sometimes, the spray rod has to be inserted inside the rice hills that might hurt the rice plant and resulted in bringing a lot of wounds caused by compacting with the leaf when the spray rod is moving between the hills. Thus the spraying method can't be efficiently applied to control the microorganism to work on the leaf sheath. And the wounds on the plant will also increase the probability of suffering fro infection of disease because the pathogen will easily invade the wounded paddy rice through the wounds.
[0005] Therefore, it is attempted by the applicant to provide a method which can rectify the problem caused upon applying a microorganism to the plant and to provide an efficient method to be applied in biocontrol and preventing pathogen infection.
SUMMARY OF THE INVENTION
[0006] It is therefore an object of the present invention to provide a microorganism object to replace the traditional agricultural chemical for solving its improper and massive usage upon cultivating the plant.
[0007] It is therefore another object of the present invention to provide a microorganism object to be applied in biocontrol. In addition to provide a method for a microorganism correctly entering the possible invading site of the plant and decreasing the probability of a pathogen entering the possible invading site of the plant in order to increase the efficiencies for preventing infection and killing the pathogen.
[0008] According to the present invention, there is provided a method for producing an agent which comprises a step (a) of providing a microorganism object to be operated on an object, a step (b) of combining the microorganism object with a modeling material to form an intermediate, and a step (c) of adding a modeling reagent to the intermediate, and forming agent.
[0009] Preferably, the agent further comprises a carrier for carrying the microorganism object. The microorganism object is a kind of antagonistic microorganism, e.g. Gliocladium virens. The antagonistic microorganism of Gliocladium virens is to antagonize Rhizoctonia solani AG-1 the causal organism of rice sheath blight.
[0010] Preferably, the modeling material further comprises an agglutinate material, an inoculating medium and a floating reagent. The inoculating medium is chlamydospore formulation. The floating reagent is Sodium Alginate for modeling the intermediate. The floating reagent is selected from air bubble or non-water-affinity material for providing said agent with an ability of floating on irrigation water.
[0011] Preferably, the non-water-affinity material is a kind of vegetable oil selected from the soybean oil.
[0012] Preferably, the modeling reagent is Calcium Chloride solution for agglomerating with the agglutinate material of the modeling material.
[0013] According to another aspect of the present invention, there is provided a method for an agent to work comprising a step (a) of providing an agent having a microorganism object therein, a step (b) of making the agent to contact an object and a step (c) releasing the microorganism object from the agent to work on the object.
[0014] According to a further aspect of the present invention, there is provided a method for an agent to control and prevent plant disease comprising a step (a) of providing an agent having a microorganism object therein for controlling and preventing plant disease, a step (b) of making the agent contact the plant, and a step (c) of releasing the microorganism object from the agent to work on the object to control and prevent the plant disease.
[0015] Preferably, the method is applicable to plant hydroponic system. In the step (b), the contact is to make the agent attach to the object.
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