Evidence level: Self-reported grower trial, not an independently verified or peer-reviewed finding. This is the single most repeated claim in Electric Fertilizer’s history — republished across three different eras of the site. Repetition is not validation. Here is exactly what was reported, by whom, and what wasn’t measured.
Who and what
Originally published August 2014. The growers, identified as “Weber and Lang” — a father and son who were also preparing an entry for a school science fair — grew tomatoes in sub-irrigation planters (5-gallon buckets with a self-watering reservoir). Rather than a plain DC power supply, they tested one of David Wechsler’s own prototype pulsed-DC devices.
The reported result
Per the growers’ own account, relayed by Electric Fertilizer: “Over 2-3 seasons they have consistently achieved yield gains of over 50% by weight.” In one specific trial on indeterminate tomato varieties, the treated plants reportedly began producing a harvestable crop “more than 3 weeks sooner than their control group.”
A separate, more specific data point from the same collaboration (recorded in David’s own research notes, 2014): during an outbreak of Tomato Spotted Wilt Virus (TSWV) that started in May, electrified plants continued producing despite active infection — diseased portions were clipped as they appeared — while a mid-June weigh-in showed 29 oz from the treated plants vs. 18.25 oz from the untreated control, a +59% difference. This is the single most specific quantified number behind the general “50%+” claim, but it’s one weigh-in from one season, not a full dataset.
What is and isn’t established here
- This is a grower’s own multi-season report, not EF’s own controlled experiment. Electric Fertilizer supplied the prototype hardware but did not run this trial, measure the plants day-to-day, or independently verify the harvest weights.
- Sample size and replication were never published. Neither the original post nor the surviving notes state how many plants or buckets were in each group, or whether growing conditions were otherwise identical beyond both being in the same SIP system.
- “Consistently… over 2-3 seasons” is the growers’ own characterization, not a dataset Electric Fertilizer has reviewed in full — the one specific weigh-in that survives (+59%, mid-June) is a single data point, not the full multi-season record.
- The TSWV disease-recovery observation is notable but unreplicated. Plants continuing to produce through an active viral infection is a real, specific, positive observation — and also exactly the kind of result that needs independent replication before it means anything beyond this one grow.
The correct way to describe this result
Do not state “electroculture increases tomato yields by 50%” as a general or verified fact — that overstates what this source establishes. The accurate framing is: a father-son grower team testing prototype pulsed-DC electronics reported roughly 50-59% greater tomato yield by weight, self-observed over 2-3 growing seasons (with one specific mid-June weigh-in at +59%, alongside an active Tomato Spotted Wilt Virus infection) — a real, repeated, named account, but never independently measured or verified by Electric Fertilizer.
See Research for peer-reviewed and pre-print findings, and Experiments for EF’s own current, instrumented trials.