Walmart has joined the Conservation International-led Sustainable Coffee Challenge, pledging to purchase only sustainably sourced private brand coffee by the end of 2020, reported an article posted on DailyCoffeeNews.com.“By selling products with certifications and incorporating feedback from coffee growers, we are working to make our coffee value chain effective and sustainable for everyone, from the farmers to our customers and that first delicious sip in the morning,” Fernando Serpa, Walmart’s vice president of sourcing and procurement, is quoted as saying.P2PI Note: Walmart's value-centric Great Value brand includes K-cups in recently upgraded packaging, large tins of ground coffee and instant/soluble coffee, while its Sam's Choice brand name offers a 100% arabica line.