Using which MYCORRHIZA for low cost tropical agriculture? Or other BIOSTIMULANTS, BIOFERTILIZERS?
What specific natural plant nutrient sources or plant growth-promoting sources, such as BIOSTIMULANTS, BIOFERTILIZERS, etc., would you use for starting cultivating tropical crops like corn, sorghum, millet, peanuts, tomatoes, and onions in a middle scale production in a tropical country as Simbabwe, where chemical fertilizers are economically not afordable or either unavailable, but where some animal dung is accessible?
How economically successful is it which commercially available mycorrhiza to use or other microorganisms of the soil microbiome with similar benefits such as PGPR (plant growth-promoting rhizobacteria), PGPF (plant growth promoting fungi), PGPM (plant-growth-promoting microorganisms), as well to use seaweed, algae stimulants or verimcompost?
Go to the Rodale Institute website Douds and the collaborators have formulated the method for on farm mycorrhizae production.
The on farm propagation gives an adaptive mixture of species with ability to be effective under your conditions.
Johann HUMER Everything that increases crop yield must be applied. It is hard to predict effect of particular biological agents in your target area. There are many factors that increase/decrease effect of biofertilizers or biopesticides (crop, cultivar, soil type, weather, pathogens and natural beneficial organisms in soil, nutrients in soil, etc). Generally, it must be a forecasting system for beneficial organisms just like that is used for the plant pathogens /diseases. Usually, the positive effect of applied beneficial organisms grows up to maximum after several years of continuous application.
Johann HUMER Another important factor - quality of bioagents. Even lyophilized microorganisms may have contamination and reduced viability after storage, and for the liquid culture of beneficial bacteria/fungi it is rather expected. Application of biological fertilizers/pesticides need very high discipline from both producers and farmers, and quality control. Hot and humid climate only increases the problem.
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