Optimalisasi Frekuensi Penyiraman terhadap Pertumbuhan dan Produktivitas Selada (Lactuca sativa L.) pada Sistem Hidroponik Wick
Optimization of Watering Frequency on the Growth and Productivity of Lettuce (Lactuca sativa L.) in a Wick Hydroponic System
Keywords:
Berat Segar, Frekuensi Penyiraman, Hidroponik Wick, RAK Non-Faktorial, SeladaAbstract
Pertanian urban memerlukan teknik budidaya yang efisien dan hemat sumber daya untuk mengatasi keterbatasan lahan dan meningkatnya kebutuhan pangan. Sistem hidroponik wick merupakan metode sederhana dan berbiaya rendah yang banyak digunakan untuk produksi sayuran daun, namun pengelolaan frekuensi penyiraman belum banyak dikaji secara eksperimental. Penelitian ini bertujuan untuk menganalisis pengaruh frekuensi penyiraman terhadap pertumbuhan dan produktivitas tanaman selada (Lactuca sativa L.) pada sistem hidroponik wick. Penelitian menggunakan pendekatan kuantitatif dengan Rancangan Acak Kelompok non-faktorial yang terdiri atas empat taraf frekuensi penyiraman dan empat ulangan. Parameter yang diamati meliputi jumlah daun, tinggi tanaman, dan berat segar. Data dianalisis menggunakan ANOVA dan dilanjutkan dengan uji Tukey pada taraf 5%. Hasil penelitian menunjukkan bahwa frekuensi penyiraman berpengaruh sangat nyata terhadap jumlah daun (F = 18,92), tinggi tanaman (F = 24,61), dan berat segar (F = 32,14) pada taraf signifikansi 1%. Penyiraman tiga kali per hari menghasilkan pertumbuhan dan produksi tertinggi. Penelitian ini memberikan kontribusi teoretis dalam manajemen air sistem hidroponik pasif serta rekomendasi praktis untuk meningkatkan produktivitas selada secara efisien.
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