MARIA D. N SANAM Pengarang Micha S. Ratu Rihi, SP., M.Si Dosen Pembimbing 1 Dr. Ir. Zainal Arifin, MP Dosen Pembimbing 2 Marsema M. Kaka Mone, SP., M.Sc Penguji 1 Roosna M.O. Adjam, SP., M.Si Penguji 2

The marketing costs of leeks are not yet known because of the differences chains and marketing functions. Likewise with the efficiency in each of marketing channels. This study aims to: 1) identify marketing channels of leeks; 2) identify marketing functions of leeks implemented by marketing institutions; 3) calculate marketing margin of leeks; 4) determine the marketing efficiency of leeks in Kupang City. Data is collected since 1 – 31 March 2020. Data collection method is conducted by survey method, while the method of determining respondents is conducted by taking all population (census) as respondents. The number of retailers respondents are 80 people. Determination of respondents to other marketing institutions is determined by the snowball method, namely tracing information from retailers to farmers. The results show there are three marketing channel of leeks in Kupang City, namely: channel I: Farmers → Retailers → Consumers; channel II: Farmers → Brokers → Retailers → Consumers; and channel III: Farmers → Brokers → Collectors → Retailers → Consumers; the exchange function (selling) is conducted by farmers, brokers, collectors, and retailers in all channels, while the exchange function (buying) is conducted by brokers, collectors, retailers, and consumers in all channel. Physical function (transportation) is conducted by brokers on channel II and III, packaging is implemented by brokers on channel II and III; collectors on channel III, and retailers on channel I, II, and III. Facility function (financing or retribution) is conducted by brokers on channel I, II, and III; collectors on channel III; and retailers on channel I, II and III, (weight loss/risk taking) is conducted by brokers on channel II and III. Marketing margin of leeks on channel I, II, and III respectively is; Rp.6,837.86/kg; Rp.8,801.92/kg; Rp.11,718.75/kg. Marketing efficiency of leeks in Kupang City 2020 is efficient with the value of marketing efficiency on channel I, II, and III respectively is 0.21%; 1.30%; and 3.87%. Key words: marketing, leeks, marketing margin, and efficiency