Farhan Ahmed wrote:uptake of carbohydrates???
Yes sorry I should have explained it better ... the Micorrhiza (fungi) being minute attach themselves to the roots of the host plant. being so small yet spread out evenly they create a greater surface area, which facilitates better uptake of various essential minerals for the plant. in return the plant sends its manufactured carbohydrates (such as glucose and sucrose) from the leaves down to the roots directly into the fungi. thus creating a mutually beneficial arrangement.
Many plants are unable to access the phosphate and nitrogen in soils with a basic PH. It has been proven that the fungi allow plants to colonise nutrient poor sites such as pines in leaf litter because the fungi are able synthesise phosphate ions making them available to the plant. . They are also known to host nitrogen fixing bacteria which contribute a significant amount of nitrogen for the plants use.
That therefore is the primary reason why many acid loving plants require a looser structure of planting media.