Journal
COMPUTERS AND ELECTRONICS IN AGRICULTURE
Volume 134, Issue -, Pages 33-42Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compag.2016.11.003
Keywords
Crop rotation; Production; Heuristic approach; Mixed integer linear programming
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This paper deals with a vegetable production-planning problem in which a farmer has to simultaneously determine the crop rotations and harvest schedules for a number of vegetables in his farmlands. The crop rotation decisions include the determination of crop sequence, cropping times, and cropping size in each farmland. The harvest decisions include the collection times and harvesting size for each planted crop. By taking into account the growing season and technical-ecological constraints, this paper formulates a mixed integer linear programming model to develop vegetable production decisions for organic farmers. Due to the complexity of the model, we proposed a two-phase heuristic approach to solve the model. We applied the proposed model to analyze an organic farm in Taiwan. Computational results show that the proposed heuristic is superior to CPLEX in terms of solution quality and computational times for large scale problems. In addition, some sensitivity analyses were also conducted to evaluate the impact of parameters in the model.(C) 2016 Elsevier B.V. All rights reserved.
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