How to prepare salt solution?
Ten litre of water is taken in a plastic bucket of 15 litre capacity and a good quality fresh egg is dropped in the water and the egg sinks in water and reaches the bottom. The commercial grade common salt is added little by little and dissolved in water. As the density of salt solution increases, the egg raise up. The addition of salt (Sodium chloride) is stopped when the surface of the egg to the size of a 25paise coin is visible above the solution. Now the density of water is suitable for separation of quality seeds. To this salt solution add 10kg of seeds. The seeds with low density float on the surface of the solution, whereas the seeds with high density sink in the solution. The seeds floating on the surface of the solution are removed. The seeds sunk in the solution are washed for 2-3 times in water and then used. Similarly another 10 kg of seeds are separated based on the density. By this method, 20kg of seeds required for one acre can be upgraded. Dense and quality seeds resul
