DESAIN JARINGAN IRIGASI CURAH (SPRINKLER IRRIGATION) PADA TANAMAN ANGGREK
ABSTRACT: The export of
orchids increased from about US$ 3 million in 1999 to US$ 4,1 million in 2002.
An improvement in any aspects of its culture techniques is important to
increase its productivity. One of the techniques need to develop is related to
the irrigation system. The research was conducted to develop a sprinkle type
irrigation system for Cattelya orchids of 6-7 years old, cultured in Batu,
Malang. The system was then designed, constructed and tested. It was found that, the daily water
requirement of this particular orchid was 0.12 L. Based on the water
requirement, the irrigation system was designed and constructed. At a design
level, the measurements showed that the daily discharges of the sprinkle,
lateral pipe and main pipe were 0.49 L, 4.88 L and 24.37 L respectively. The
total head loss resulted from the sprinklers, lateral pipe, main pipe, 90 angles and joints was 2.46 x 10-4 m, at a total head of pump of
10.00024631 m. The results of the performance tests on the constructed
system showed that the discharge levels were lower than that at the designed
level. It was probably due to the pump efficiency which was recorded as low as
29.31%. It was found that at 25 Psi, the water sprayed diameter was 0.8 m, with
the respective values of the uniformity coefficient, uniformity distribution,
PELQ and AELQ were 88.76%, 57.87%, 10.53% and 8.53%. The total cost needed for
the irrigation system was 4,197.22 rupiahs/m2.
Key words: design, sprinkler
irrigation, orchid
Penulis: Evi Kurniati, Bambang
Suharto, Tunggal Afrilia
Kode Jurnal: jppertaniandd070009
