the best organic fertilizers

The fertility of the topsoil can be restored by taking the following measures. a) Regular use of manures and fertilizers can replenish the minerals used by the crops. Green manuring can also be done. b) Crop rotation should be practiced c) New techniques of applying water benea..

The farm yard manure or organic manure or bio fertilizers and inorganic fertilizers supply the necessary plant nutrients to the soil. Thus, application of such materials increases the nutrient value of the soi..

Pesticides, detergents, chemical dyes and other industrial chemicals and their waste constitute synthetic organic compounds. When present in water, these chemicals can act as toxic poisons for plants, animals and humans. Such chemicals enter the hydrosphere either by usage, by accidental..

Organ Transplants and Antibodies - Organ transplantation is defined as the transfer of organs (like kidneys, heart liver etc) from one person to another. An organ transplant always involves a donor - who donates an organ and a recipient - who receiv..

A Painting exhibition is being organized in Milan. The painters who wish to exhibit and sell their paintings need to pay $100 for the space and $20 for each painting they sell. Which of the following equations best suits the function rule that represents the amount paid to the h..

Henry and his friends plan to organize a stage show to raise funds for earthquake victims. The cost of the tickets for adults is $12, and for children is $5. In order to cover expenses, at least $2000 worth of tickets must be sold. Which of the following best describes the data?..

(Embryology) It is the study of early life history of individual organisms from the fertilized egg to the adult stage (Ontogeny..

Soil Erosion - Land is also a precious resource. Land is needed for agriculture and occupation. Land is under pressure due to increasing population. Land for agriculture has to be fertile in order to be able to support a good crop. The fertility of land lies in the quality of th..

The pH of the soil is very important for having proper crop yield. The soils get buffered due to the presence of salts such as carbonates, bicarbonates, phosphates and organic acids. The choice of fertilizers depends upon pH of the soi..

. Polyploidy may be caused by fertilization of an egg by more than one sperm failure of meiosis during gamete formation. Polyploidy can artificially be introduced by a chemical called colchicine or by crossing diploids with tetraploids. Although triploids exhibit sterility, polyploidy is ..