The Effect Of Irrigation Schedule on Consumptive Water Use and Yield of Patchouli (Pogostemon cablin)

Eko Sulistyono 1) dan Sandi Yanuar 2)

ABSTRACT
The objective of this research was to study the effect of irrigation schedule on consumptive water use and yield of patchouli. The irrigation schedule treatment was combination between irrigation level and growth phase. Irrigation levels included irrigation until field capacity were applied every day (100%AT1), 3 days (100% AT3), 6 days (100% AT6), 9 days (100% AT9), irrigation until 75% of available water every day (75% AT1), 50 % of available water every day (50% AT1) and 25% of available water every day (25% AT1). The growth phase was described into whole growth phase, 2 weeks before harvest and 4 weeks before harvest.
Results showed that consumptive-water-use ranged from 129.18 cm/4 months to 47.58 cm/4 months that was equivalent to 63379 liter on pot with 25 cm diameter (100% AT3 applied at 4 weeks before harvest) to 23344 liter on pot with 25 cm diameter (25% AT1 applied during whole growth phase), respectively. High water use efficiency was yielded by irrigation level of 50% AT1 or 100% AT6. High productivity was yielded by irrigation level of 50% AT1 or 100% AT3.
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Key words: Irrigation schedule, water use efficiency, available water (AT, air tersedia), Pogostemon cablin

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1) Staf Dosen Dept Agronomi dan hortikultura, Faperta, Institut Pertanian Bogor, Jl Meranti, Kampus IPB Darmaga, Bogor 16680. Telp:081310342431, Fax(251)629353. E-mail: pengelolaanair @yahoo.com.
2) Alumni Dept Agronomi dan Hortikultura, Faperta, IPB.