nitrates in the soil

In this method, different types of crops having different requirements are grown alternatively in the same soil so that the soil is not deprived of any particular nutrient. In the rotation of crops, the leguminous crops such as pulses, peas, beans, grams, groundnuts etc are sow..

It is a method by which two or more different crops are grown together in the same soil. A mixed cropping of ragi with pigeon gram replenishes the soil because pigeon gram fixes the atmospheric nitrogen, which goes into the soil in the form of nitrates. From..

Nitric acid is present in small quantities in the atmosphere. But during thundershowers, a large quantity of this acid is produced in the atmosphere. It then comes down as a very dilute solution in rainwater. This nitric acid present in the acid rain reacts with the minerals present in the soi..

Nitrogen is an essential constituent of animal and plant matter as it forms proteins, which are the building blocks of life. The ultimate source of nitrogen is atmospheric nitrogen but neither plants nor animals are capable of assimilating free nitrogen. Thus the process of converting atmospheric n..

Nitrogen is obtained from the soil in the form of nitrates (NO 2 - ), nitrites (NO 3 - ) and ammonium (NH 4 + ) sal..

In Free State - Nitric acid is present in small quantities in the atmosphere. But during thundershowers, a large quantity of this acid is produced in the atmosphere. It then comes down as a very dilute solution in rainwater. This nitric acid present in the acid rain reacts with the minerals present..

>The nitric oxide so formed then reacts with more oxygen to form nitrogen dioxide. Nitrogen dioxide so formed, gets washed down by rain and forms nitrates and nitrites in the soil. Plants absorb these of nitrates and nitrites from the soil and convert them in..

>When nitrogen is heated with calcium carbide at 800 o C to 1000 o C, nitrolim an important fertilizer is formed. Nitrogen is used in high temperature thermometers, as a refrigerant and in electric bulbs. Nitrogen cycle charts the circulation of nitrogen compounds in nature, through the various org..

A schematic diagram showing progressive reduction of one molecule of nitrogen in the presence of enzyme nitrogenase to yield two molecules of ammonia The plants pick up nitrogen from the soil in the form of ammonium ions (NH 4 + ) or nitrate ions (NO 3 - ), ammonia being the mai..

Nitrogen occurs in free state in atmosphere, which contains 78% of nitrogen by volume. It is present in volcanic gases and gases evolved by burning coal. In combined state, nitrogen occurs in animals and plants as proteins, and as nitrates, such as NaNO 3 (chile salt peter), KNO 3 (nit..