Strawberry under sodium and chloride stress: +20.8% yield and lower leaf chloride — Holden Research, California 2014-15
Irrigation water with excess sodium and chloride.
+20,8%
Rendimiento comercial bajo
+30,0%
Aprovechamiento comercial bajo
+824 $/acre
Ingreso neto bajo
Products certified CE 2018/848, NOP USDA and JAS — suitable for certified organic production
Trial protocol
Product / dose
Application timing
Methodology
Portola strawberry in 2-litre containers with commercial potting media, controlled nursery. Completely randomised block design with two Ecoganic programmes overlaid on the grower standard, exposed to increasing salt loads in the irrigation water. All treatments received controlled-release fertiliser at planting; products were delivered by drench. Four treatments: grower standard (control), Ecoganic standard, grower standard + NaCl, and Ecoganic high-rate + NaCl. Products: ECOGANIC CALCIUM 40% PLUS and ECOGANIC BOOST UNIVERSAL. 18-24 sampling periods over 9-12 weeks at peak production. No phytotoxicity observed. The figures shown compare the two salt-stressed arms.
Source
Holden Research and Consulting (D. Holden) — Camarillo, California, EE. UU. Protocolo 15frtclstraw01, Ventura County, campaña 2014-2015. Variedad Portola, diseño en bloques completos al azar, nivel de confianza 90-95%. (2015)
Quantitative results
Values measured under real field conditions.
Rendimiento comercial bajo estrés salino
flats/acreControl
1200
Ecoganic
1450
Gain
+20,8%
Aprovechamiento comercial bajo estrés salino
%Control
35
Ecoganic
45.5
Gain
+30,0%
Ingreso neto bajo estrés salino
$/acreControl
4505
Ecoganic
5329
Gain
+824 $/acre
Cloruro en hoja bajo estrés salino (menos es mejor)
% MSControl
1.23
Ecoganic
1.11
Gain
−9,8%
Sodio en hoja bajo estrés salino (menos es mejor)
% MSControl
0.77
Ecoganic
0.73
Gain
−5,2%
Nitrógeno en hoja bajo estrés salino
% MSControl
2.18
Ecoganic
2.36
Gain
+8,3%
Potasio en hoja bajo estrés salino
% MSControl
1.65
Ecoganic
1.89
Gain
+14,5%
| Parameter | Unit | Control | Ecoganic | Gain |
|---|---|---|---|---|
| Rendimiento comercial bajo estrés salino | flats/acre | 1200 | 1450 | +20,8% |
| Aprovechamiento comercial bajo estrés salino | % | 35 | 45.5 | +30,0% |
| Ingreso neto bajo estrés salino | $/acre | 4505 | 5329 | +824 $/acre |
| Cloruro en hoja bajo estrés salino (menos es mejor) | % MS | 1.23 | 1.11 | −9,8% |
| Sodio en hoja bajo estrés salino (menos es mejor) | % MS | 0.77 | 0.73 | −5,2% |
| Nitrógeno en hoja bajo estrés salino | % MS | 2.18 | 2.36 | +8,3% |
| Potasio en hoja bajo estrés salino | % MS | 1.65 | 1.89 | +14,5% |
Visual comparison
Rendimiento comercial bajo estrés salino (flats/acre)
+20,8%
Aprovechamiento comercial bajo estrés salino (%)
+30,0%
Ingreso neto bajo estrés salino ($/acre)
+824 $/acre
Cloruro en hoja bajo estrés salino (menos es mejor) (% MS)
−9,8%
Sodio en hoja bajo estrés salino (menos es mejor) (% MS)
−5,2%
Nitrógeno en hoja bajo estrés salino (% MS)
+8,3%
Potasio en hoja bajo estrés salino (% MS)
+14,5%
Trial conclusions
With salt added to the irrigation water, the Ecoganic programme recovered 1,450 flats/acre against 1,200 for the conventional programme under the same stress: 20.8% more marketable yield. Market utilisation rose from 35.0% to 45.5% and net revenue by $824/acre. The agronomically decisive figure is in the tissue: treated plants accumulated less chloride (1.11% vs 1.23%) and less sodium (0.73% vs 0.77%) while holding more nitrogen and potassium in the leaf. Under salt stress the programme does not just yield more — it lets less salt into the plant.
Verified source
Holden Research and Consulting (D. Holden) — Camarillo, California, EE. UU. Protocolo 15frtclstraw01, Ventura County, campaña 2014-2015. Variedad Portola, diseño en bloques completos al azar, nivel de confianza 90-95%. — 2015
Validated by Ecoganic agronomic team · Francisco Tomás Krinner
Complete technical data
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