Inm on African Marigold

My book is useful for getting information on effect of organic, inorganic and bio-fertilizers on growth, flower quality and flower yield; how to reduce the inorganic fertilizer dose through organic and bio-fertilizer for marigold?; effect of organic and inorganic fertilizers on nutrient content and uptake of marigold as well as nutrient status of the soil. It is also useful to know the suitable dose of chemical fertilizers with bio-fertilizers and vermicompost.