Select the correct statement (s) regarding the solution culture techniques.

Options

A. successful hydroponic culture required a large volume of nutrients solution or frequency adjustment of the nutrients solution of prevent roots from producing radical changes in nutrients concentration and pH of the medium.
B. In nutrient film growth system, plant roots lie on the surface of a trough, and nutrients solution flow in a thin layer along the trough over the roots.
C. In aeroponics technique, plants are grown with their roots suspended in air while being sprayed continously with a nutrient solution
D. all of these

Answer

D