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• Effect of ZnSO4and Rosabor on Productivity and Economic Efficiency of Robusta Coffee Grown onFerralsols of Daklak Province

  Nguyen Van Minh

  Received: 14-04-2014 / Accepted: 26-06-2014

   Abstract PDF (VIETNAMESE)

  Field fertilizer experiments were conducted to identify the most effective dosage of ZnSO4 and Rosabor applied to Robusta coffee grown on Ferralsols of DakLak Province. All of experiment plots were applied with 260kg N + 95kg P2O5 + 240kg K2O and 10 tons of manure (every two years). The results showed that ZnSO4 0,4% + Rosabor 0,25% plots with 5 times/year (twice in the dry season and thrice in the rainy season) increasedthe content of nitrogen, potassium, zinc and boron in leaves.Application of ZnSO4 and Rosabor also exerted positive effecton the growthand development, increasedreserve branchlength by 17% and reducedthe ratio of fresh/dry bean by 4%.Highest yield of coffee beans per ha could attain 3.97 tons withVND 71.78 million annual profit.

• Competitiveness of Quality Coffee Beans of Dak Lak

  Nguyen Thanh Truc, Do Thi Nga, Nguyen Van Minh

  Received: 17-09-2012 / Accepted: 18-12-2012

   Abstract PDF (VIETNAMESE)

  The quality of consumed coffee bean is still low because of farming techniques, the standard unguaranty in harvesting and processing. Over 90% of the exported coffee bean outputs is based on old standards (TCVN 4193-93) which is unsuitable for Resolution 420 of the ICO. The competitive ability in quality of coffee beans in Dak Lak is much lower than with the largest producing coffee countries in the world. This study aims to evaluate the competitiveness of quality coffee beans of Dak Lak; In order to propose some mainly solutions improving the quality of coffee beans to increase their competitiveness.