Nitrogen is very important to many crops; without nitrogen the production is decreased.
nitrogen
Nitrogen is a fertiliser that encourages green growth, but, as it also encourages soft growth it is better used in a balanced fertiliser.
Yes, though often in the form of Ammonia.
Examples: nitrogen, potassium, phosphorous, calcium, sulfur and other microelements.
Fertilizer may contain: potassium, nitrogen, phosphorous, sulfur, cacium and some microelements.
possibly to much nitrogen based fertiliser
Plants do need nutrients beyond H2O, CO2, and sunlight ... mostly various minerals and "fixed nitrogen" ... that means nitrogen compounds rather than nitrogen gas. Fertilizer is an attempt to supply those needs faster than nature would do it on her own.
It has a lot of the foods on which plants thrive, especially nitrogen.
Phosphorous minerals (ex.: apatite) Potassium minerals (ex.: potassim chloride) A source of nitrogen and hydrogen for fertilizers with nitrogen Natural fertilizers
Yes, nostoc is a type of cyanobacteria that can be used as a biofertilizer. It is able to fix atmospheric nitrogen into a form that plants can use, helping to improve soil fertility and plant growth.
peat
fertiliser