2. Fertilizer containing microorganisms that help the nutrient is beneficial to plants.2.1 fertilizer of plant growth promoting bacteria Plant growth promoting bacteria (Plant Growth Promoting Rhizocacteria or PGPR) or PG PR is ปุ๋ยชีวภาพชนิดหนึ่ง containing bacteria the same or different groups. As well as contain bacteria that can fix nitrogen, dissolved phosphate production ฮอร์โมนส่งเสริม plant growth. And gives some kind of nutrient is useful. In which the bacteria are capable of many currencies combination, such as bacteria genera azo Spirillum some lines Aqua can in nitrogen fixation. Dissolved phosphate to produce hormones to promote the growth of plant roots Enhances the adsorption plant nutrients. This type of fertilizer, reducing fertilizer use at least 10% were พีจีพีอาร์ 1 fertilizer for corn, sorghum, etc.2.2 fertilizer that enhances the availability of plant nutrients. Bio fertilizer in this group enhances the beneficial elements to eat some plants dissolve in the keep. Helpful to plant more by increasing surface area for absorption of roots. With plants by increasing the amount of rhizosphere microbial fiber Help nutrients helpful difficult, such as phosphorus and calcium, the chance to touch the root and deeply used more. Thereby increasing the availability to plants. As well as Ji first 60 some group can create organic acids or enzymes of some kind. That can help dissolve or digest phosphate in the form that plants can absorb to ease up, so the nutrients such as beneficial to the plant increased. Can be divided into 3 group.The group. 1 fertilizer containing microorganisms help enhance the absorption of plant nutrients. The fungus is the mycorrhiza living with plant rely on each other.? สร้างส่วน of fibers intertwined with plant roots and some can burrow into the earth to help absorb nutrients. The plants are especially phosphorus phosphorus through the suction of fiber, Ko Raisa help
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