questions: asking about nursery bed preparation 
 answers: told him that the soil of the nursery bed is thoroughly mixed with 5-10 kg per sqm rotten farmyard manure.
• this type of bed is prepared about 15 cm high from the ground level. the width is kept at 1-1.5 m and length 3-5 m. this enables adequate drainage during rains and checks water stagnation.
• a space of 3-4 cm is left between two beds in order to carry out cultural practices smoothly. 
fungicides like captan or thiram @ 5 g/m2 are used to control soil-borne pathogens.and for control of insects apply malathion 5 % dust