questions: asking about value addition for horticultural crops and increase the shelf life for preservation.
recommended to add vinegar for preservation of fruits and vegetables. further for scientific method approach agricltural technology information centre located at assam agricultural university then visit deppt. of horticulture and food processing 
 answers: recommended to add vinegar for preservation of fruits and vegetables. further for scientific method approach agricltural technology information centre located at assam agricultural university then visit deppt. of horticulture and food processing