The harvesting of delicate fruits (strawberries, raspberries, grapes, plums) and vegetables (tomatoes, mushrooms, lettuce) for the fresh market has not been successfully completed despite a substantial investment in crop breeding and mechanization research. Machines that can harvest such delicate biological tissues, generally inflict too much damage on a product destined for the fresh market but have been successful with product destined for processing. Selective harvesting is another substantial challenge facing researchers in the fruit and vegetable sector in particular.
The overall sequence of operations (Figure 8) is orientated towards protecting post-harvest product quality and minimizing loss due to deterioration occasioned by respiration, microbial activity, insects or rodents. Control of respiration (i.e. conversion of carbohydrates to carbon dioxide and water) in crop products is achieved by temperature reduction, most usually by refrigeration but also by periodic ventilation typically of the cold night air.

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The harvesting of delicate fruits (strawberries, raspberries, grapes, plums) and vegetables (tomatoes, mushrooms, lettuce) for the fresh market has not been successfully completed despite a substantial investment in crop breeding and mechanization research. Machines that can harvest such delicate biological tissues, generally inflict too much damage on a product destined for the fresh market but have been successful with product destined for processing. Selective harvesting is another substantial challenge facing researchers in the fruit and vegetable sector in particular.
The overall sequence of operations (Figure 8) is orientated towards protecting post-harvest product quality and minimizing loss due to deterioration occasioned by respiration, microbial activity, insects or rodents. Control of respiration (i.e. conversion of carbohydrates to carbon dioxide and water) in crop products is achieved by temperature reduction, most usually by refrigeration but also by periodic ventilation typically of the cold night air.

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