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Design considerations of variable rate liquid fertilizer applicator for mature oil palm trees

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  • نوع التسجيلة:
    Electronic Resource
  • الدخول الالكتروني :
    http://psasir.upm.edu.my/id/eprint/100900/
    https://link.springer.com/article/10.1007/s11119-022-09892-5
    http://psasir.upm.edu.my/id/eprint/100900
    https://link.springer.com/article/10.1007/s11119-022-09892-5
    10.1007/s11119-022-09892-5
  • معلومة اضافية
    • Publisher Information:
      Springer 2022-03-02
    • Added Details:
      Yamin, Muhammad
      Wan Ismail, Wan Ishak
      Abd Aziz, Samsuzana
      Mohd Kassim, Muhamad Saufi
      Akbar, Farah Naz
      Ibrahim, Muhammad
    • نبذة مختصرة :
      This research study focuses on the design of variable rate liquid fertilizer applicator which can measure the NPK status of soil and applies N, P and K nutrients simultaneously at separate variable rates around the oil palm trees in the form of aqueous solutions of straight fertilizers having single nutrient. A fertilizer flow control and spray system was designed to apply liquid fertilizer around the oil palm tree on a 5 m × 5 m (25 m2) area of most effective roots. On the basis of simulation and calculations, six 8006 flat fan nozzles were selected to maintain the adequate swath coverage of fertilizer spray. The nozzles 1–3 were mounted vertically on the horizontal boom to spray on the machine side of an oil palm tree, i.e. the side of an oil palm where the machine is passing through. Whereas nozzles 4–6 were fixed at − 22°, − 21° and − 20° angles with respect to the horizontal plane on a 45° angled boom to spray across the tree using trajectory method. An average simulated liquid velocity of 14.05 m/s from each nozzle was found to spray at 2.5 m distance across the tree using trajectory method. Thus an improved distribution of fertilizer around the tree at 25 m2 area of most effective roots can be achieved using this system. Mechanical structure of the applicator which carries all the equipment and fertilizer tanks was designed by using the finite element analysis. Minimum safety factors of 3.13 and 11.34 were found for mechanical structure and fertilizer tank assembly respectively which were satisfactory to bear the necessary loads during field operation.
    • الموضوع:
      Article; PeerReviewed
    • Other Numbers:
      MYPUT oai:psasir.upm.edu.my:100900
      Yamin, Muhammad and Wan Ismail, Wan Ishak and Abd Aziz, Samsuzana and Mohd Kassim, Muhamad Saufi and Akbar, Farah Naz and Ibrahim, Muhammad (2022) Design considerations of variable rate liquid fertilizer applicator for mature oil palm trees. Precision Agriculture, 23 (4). pp. 1413-1448. ISSN 1385-2256; ESSN: 1573-1618
      1395417234
    • Contributing Source:
      UNIVERSITI PUTRA MALAYSIA
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1395417234
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