@article{Lopez:256483,
      recid = {256483},
      author = {Lopez, Yluminada O. and Campo, Miguel M. and Nunez, Jose  B.},
      title = {Effects of Altitude and Harvest Period on Broca  (Hypothenemus hampei Ferrari) infestations in Coffee  (Coffea arabica L.) Beans in the Dominican Republic; Efecto  de la Altitud y Periodos de Cosecha en la Infestaciôn por  la Broca (Hypothenemus hampei Ferrari), en Granos del  Cultivo de Café (Coffea arabica L.), Barahona, Republica  Dominicana},
      address = {2008-07-13},
      number = {1875-2017-367},
      pages = {9},
      year = {2008},
      abstract = {In the Dominican Republic, the area planted with coffee is  132,500 ha which produces an annual harvest of 36,636,364  kg through the efforts of more than 50,000 coffee farmers.  Since 1997, the broca (Hypothenemus hampei) pest has  infested the coffee fields in the country and has reduced  crop yield and quality. The objectives of this study were  to evaluate the influence of altitude and harvest period on  the incidence of the broca incidence and on coffee bean  grain quality. The experimental design was a completely  randomized design with a factorial arrangement with 4  replicates. The twelve treatment combinations were formed  from four altitudes (400-500, 600-700, 850-950 and 1000-  1100 meters) and three harvest periods (November, December  and January). The variables were crop management,  percentage of infected grains, and commercial quality of  the beans. The results showed that from 78.4% to 100% of  the farmers controlled the shade at 850-950 meters of  altitude while 74.75% did so at 400-500 meters of altitude.  The higher incidences (22.33 % and 20.00 %) of infected  beans were at 400-500 and 600- 700 meters of altitude,  respectively. The lineal regression analysis showed an  inverse relationship between altitude and percentage of  infected grains. Moreover, this analysis showed a direct  relationship between altitude and bean quality AAA, but an  inverse relationship with quality AA and A. The highest  percentage of beans with quality AAA (69.44 %) and AA  (52.61 %) were at 1000 -1100, and 400-500 meters of  altitude, respectively. The data suggest that altitude  affects the yield and quality of coffee beans.},
      url = {http://ageconsearch.umn.edu/record/256483},
      doi = {https://doi.org/10.22004/ag.econ.256483},
}