Intermittent circulation of simplified deep flow technique hydroponic system increases yield efficiency and allows application of systems without electricity in Haiti

Table 1 Comparison of BSS yields and water usage in constantly and intermittently circulated Victory Garden systems

Replicate	Treatment	Transfer date	Harvest date	Yield (g)	Yield per energy input (g/kWh)	Yield per water input (g/L)	ADWU (L)
1	Constant	20-Oct-21	9-Nov-21	3570.50 ± 205.72	1499.33 ± 86.39	58.84 ± 6.36	3.38 ± 0.38
1	Intermittent	20-Oct-21	9-Nov-21	3693.00 ± 51.28	26,645.02 ± 369.96^a	120.89 ± 78.36	2.25 ± 0.43
2	Constant	23-May-22	13-Jun-22	5177.50 ± 362.87	2075.32 ± 145.45	77.32 ± 34.50	3.44 ± 0.30
2	Intermittent	23-May-22	13-Jun-22	4850.00 ± 141.61	33,402.2 ± 975.27^a	85.42 ± 9.98	2.58 ± 0
3	Constant	15-Jul-22	4-Aug-22	3251.25 ± 93.43	1365.27 ± 39.23	22.90 ± 5.51	6.98 ± 0.34
3	Intermittent	15-Jul-22	4-Aug-22	2421.25 ± 105.74^a	17,469.34 ± 762.90^a	19.54 ± 4.86	6.08 ± 0.34

^aSignificant difference between treatments according to a Welch’s two sample t-test or Wilcoxon rank sum test, p < 0.05

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