EFFECT OF NUTRIENT SOLUTION FLOW INTERVAL ON GROWTH AND YIELD OF LETTUCE (Lactuca sativa) GROWN IN HYDROPONICALLY DEEP FLOW TECHNIQUE

Authors

  • Suci Sapta Ningrum Universitas Swadaya Gunung Jati
  • Ismail Saleh Universitas Swadaya Gunung Jati
  • Dodi Budirokhman Universitas Swadaya Gunung Jati

DOI:

https://doi.org/10.36423/agroscript.v1i1.192

Abstract

Lettuce (Lactuca sativa L.) is one of the vegetables that are commonly cultivated by using hydroponic systems. Some hydroponic systems require high current expenses in particular for the electricity in order to circulate nutrient solution e.g. in the water culture system – deep flow technique (DFT) -. Electricity costs can be reduced by changing from continuous nutrient flow to intermittent nutrient flow. The aim of this research was to investigate the effect of interval nutrient flow on growth and yield of lettuce. The experiment was conducted in Cirebon from February to April 2018. The experiment was arranged by using randomized complete block design with four treatments: (i) continuous nutrient flow (control), intermittent nutrient flow (nutrient flow during (ii) 15 minutes, (iii) 30 minutes, and (iv) 45 minutes). For each intermittent treatment, the nutrient flow was interrupted for 60 minutes. Each treatment was repeated four times. The result showed nutrient flow interval affected to plant height, shoot diameter, and leaf area at 35 days after planting (DAP). Meanwhile, leaves number, root volume, and fresh weight of harvested crops were not significantly different in all nutrient interval treatments. The highest plant height and shoot diameter were detected in the treatment (ii) nutrient flow during 15 minutes and interruption for 60 minutes, the results were not significantly different to the control – continuous flow treatment. It can be concluded the interval nutrient flow can be used as an alternative of the continuous flow of nutrient solution in hydroponically DFT.

References

AlShrouf, A. (2017). Hydroponics, aeroponic and aquaponic as compared with conventional farming. American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS), 27(1), 247–255.

Barbosa, G. L., Gadelha, F. D. A., Kublik, N., Proctor, A., Reichelm, L., Weissinger, E., … Halden, R. U. (2015). Comparison of land, water, and energy requirements of lettuce grown using hydroponic vs. conventional agricultural methods. International Journal of Environmental Research and Public Health, 12(6), 6879–6891.

Chun, C., & Takakura, T. (1994). Rate of root respiration of lettuce under various dissolved oxygen concentrations in hydroponics. Environment Control in Biology, 32(2), 125–135.

Febriani, D. N. S., Indradewa, D., & Waluyo, S. (2013). Pengaruh Pemotongan Akar dan Lama Aerasi Media Terhadap Pertumbuhan Selada (Lactuca sativa L.) Nutrient Film Technique. Vegetalika, 1(1), 123–134.

Hounsome, N., Hounsome, B., Tomos, D., & Edwardsâ€Jones, G. (2008). Plant metabolites and nutritional quality of vegetables. Journal of Food Science, 73(4), R48–R65.

Jensen, M. H. (1997). Hydroponics worldwide. International Symposium on Growing Media and Hydroponics 481, 719–730.

Ningrum, D. Y., Triyono, S., & Tusi, A. (2014). Pengaruh Lama Aerasi Terhadap Pertumbuhan dan Hasil Tanaman Sawi (Brassica juncea L.) pada Hidroponik DFT (Deep Flow Technique). Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), 3(1), 23-29.

Roidah, I. S. (2015). Pemanfaatan lahan dengan menggunakan sistem hidroponik. Jurnal Bonorowo, 1(2), 43–49.

Zeroni, M., Gale, J., & Ben-Asher, J. (1983). Root aeration in a deep hydroponic system and its effect on growth and yield of tomato. Scientia Horticulturae, 19(3–4), 213–220.

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Published

2019-07-19

How to Cite

Ningrum, S. S., Saleh, I., & Budirokhman, D. (2019). EFFECT OF NUTRIENT SOLUTION FLOW INTERVAL ON GROWTH AND YIELD OF LETTUCE (Lactuca sativa) GROWN IN HYDROPONICALLY DEEP FLOW TECHNIQUE. AGROSCRIPT: Journal of Applied Agricultural Sciences, 1(1). https://doi.org/10.36423/agroscript.v1i1.192

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