Good postharvest handling is harvest handling to postharvest activities in accordance with the principles of Good Handling Practices (GHP). GHP implementation is expected to improve the quality of agricultural products and suppress lost harvest. In the paddy commodity, the implementation of GHP covers harvest based on appropriate harvest index, way to harvest, threshing, drying, grinding and storage. The objective of the study was initiated to determine harvest losess and suitability of GHP implementation in reducing losses at harvest and postharvest in the tidal land of Tanjung Jabung Timur Regency. The study was done with observation approach to determine the suitability of postharvest handling innovation based on GHP implementation. To determine of harvest losses by calculate using a formula (SP) = SPS + SSP directly in the field. The results showed that losses at harvest time based on GHP implementation was 1.6% (Inpara 3 varieties), 1.5% (Ciherang varieties) whereas with the way of farmers losses at harvest was higher about 5.1% (Inpara 3) and 4.5% (Ciherang). The results showed that in general situation the farmers were not practicing GHP on harvest and postharvest process.

Almost 60% of Jambi Province’s potato production comes from Kerinci District. As well as other food crop products, productivity must be balanced with the quality of the produced. Postharvest handling based of Good Handling Practices concept is the key to producing high quality and competitive potatoes and optimizing the results obtained. The data obtained showed that there was a decrease in potato seed yield around 16% during the storage. The loss was contributed by rotten and moisure migration tubers. Very few studies have been conducted to evaluate the appropriateness of postharvest handling of potatoes according to GHP concept in Kerinci District. Therefore, purpose of the study was to determine the level of suitability of postharvest handling of potatoes in Kerinci District. The research method is descriptive exploratory by making hostages systematically, factually and accurately. The data were obtained through observation, interviews and calculating the percentage of postharvest handling suitability based of the GHP concept. The results showed that the level of suitability for postharvest handling of potatoes in Kerinci District was around 69% with the average improvement that had to be done at the cleaning, storehouse handling, sanitation and packing type stages around 31% and digging tube loss reaching 100%. In principle, carrying out potato postharvest activities based of the GHP recommendations is an effort to minimize yield losses. The results of this study are expected to be a solution for improving the quality and competitiveness of potato commodities in Kerinci District, Jambi Province.