Sustainable Management of the Soil Rhizosphere System
Methods for the sustainable management of the soil rhizosphere system for efficient crop production and fertilizer use clearly fall into three distinct ways and methods: a) cultural management/practices; b) efficient nutrient application/fertilizer management; and c) use of organic fertilizers and bio-fertilizers.
Mycorrhizal fungi are species of fungi that intimately
associate with plant roots forming a symbiotic relationship, with the
plant providing sugars for the fungi and the fungi providing nutrients
such as phosphorus, to the plants. Mycorrhizal fungi can absorb,
accumulate and transport large quantities of phosphate within their
hyphae and release to plant cells in root tissue.
Current activities of biofertilizer project in Japan
Takuji Ohyama, Faculty of Agriculture, Niigata University
Biofertilizer mailing list
Biofertilizer mailing list has been established for exchanging information among researchers, producers, technicians, farmers, students and people who are interested in biofertilizer in Asia proposed in the last meeting in Bangkok. This list is managed by Project manager Dr. Tsuguo Genka JAIF. There are 73 people in the current list.
A field experiment was conducted in 1996/1997 to investigate the effect of charcoal (CH) and vesicular-arbuscular mycorhiza (VAM) inoculation on vine growth, fruit development and quality of passion fruits grown in the field. Plants grown in soils that are low (< 30 ppm) in P content, benefited from root colonisation by VAM. Inoculation of passion fruit cuttings raised in sterilised media inoculated with VAM fungi significantly increased vine growth, yield and quality of fruit. Inoculation with VAM fungi resulted to 100% survival of passion fruit transplants.
5. Use of Wood Vinegar
If agricultural chemical use is inevitable, wood vinegar is added to the mixture. Adding wood vinegar can improve effectiveness by 30~40%. By using a small amount of wood vinegar, great effects can be obtained. Wood vinegar from oak trees boosts the color and sugar of melons.