Case Study

China Greenhouse Strawberry Trial: 24% More Fruit and Higher Brix with Microbial Biofertilizer

In a China greenhouse strawberry trial over the December to February winter season, Sunrise Soil Probiotic, an OMRI Listed and CDFA registered microbial biofertilizer, lifted fruit count 24% (202 to 251 berries per plant, and 34% at the January peak) and held Brix above 10.7 all season while the untreated control fell to 9.64.

24%
more fruit per plant
34%
more fruit at January peak
+1
Brix point vs control

Results at a glance

MetricUntreated controlSunrise treated
Fruit per plant (3-month total)202251 (+24%)
January fruit per plant79106 (+34%)
Brix, December10.7211.22
Brix, February9.6410.71
Canopy and fruit setThinner, weakerDenser, heavier set

The challenge

A commercial strawberry grower in China wanted more marketable berries per plant and sweeter fruit through the December 2022 to February 2023 winter season, without overhauling the existing fertility program. In China's fresh strawberry market, both the number of berries per plant and their sweetness drive packout rates and premium retail pricing, so small per-plant gains scale into real revenue across a greenhouse. The grower needed an input that could add fruit and hold sugar content deep into the season, when Brix often slides as the crop's nutrient demand climbs. The trial put Sunrise Soil Probiotic, an OMRI Listed and CDFA registered multi-strain microbial inoculant of beneficial bacteria and fungi, against an untreated control in an elevated tabletop greenhouse, comparing the two zones across three full months of harvest data to isolate Sunrise as the only changed input.

What we did

An elevated tabletop greenhouse was split into two zones running the same base fertility program. One zone was treated with Sunrise Soil Probiotic, a multi-strain microbial biofertilizer of beneficial bacteria and fungi, while the other was left untreated as a head-to-head control. Fruit count per plant and Brix (soluble solids) were recorded every month from December through February, so the only difference between the two blocks was the Sunrise application. That design let the trial attribute any gain in fruit number, sweetness, or plant vigor directly to the microbial biofertilizer rather than to weather or a change in fertilizer.
This is some text inside of a div block.
This is some text inside of a div block.
Untreated control: 202 strawberries per plant over the season, with Brix sliding from 10.72 to 9.64 and a thinner, less vigorous canopy.
This is some text inside of a div block.

Untreated control: 202 strawberries per plant over the season, with Brix sliding from 10.72 to 9.64 and a thinner, less vigorous canopy.

This is some text inside of a div block.
Sunrise treated: 251 strawberries per plant, 24% more, with Brix held above 10.7 all season and a denser canopy carrying heavier, market-ready fruit.
This is some text inside of a div block.

Sunrise treated: 251 strawberries per plant, 24% more, with Brix held above 10.7 all season and a denser canopy carrying heavier, market-ready fruit.

The results

The Sunrise-treated zone produced 251 berries per plant over the three-month season against 202 in the untreated control, a 24% increase, and the gap was widest at the January peak, where treated plants set 106 berries per plant versus 79, 34% more. Sweetness held up just as clearly: treated Brix stayed above 10.7 all season, from 11.22 in December to 10.71 in February, while the untreated control slid from 10.72 to 9.64. That is roughly a full Brix point of extra sweetness every month, sustained even as the crop's nutrient demand rose late in the cycle. Treated plants also carried denser foliage, stronger canopy, and heavier fruit set, with more berries reaching full market-ready color. For strawberry growers, greenhouse operators, and specialty produce programs, the trial shows what an OMRI Listed microbial biofertilizer can add on both yield and quality.

The data

Fruit per plant
per plant
202
251
24% more fruit per plant over the season
January fruit per plant (peak)
per plant
79
106
34% more fruit per plant at the January peak
Brix at season end (February)
Brix
9.64
10.71
Season-end Brix held higher on treated: 10.71 vs 9.64 on the untreated control
This is some text inside of a div block.
This is some text inside of a div block.
Download the complete case study (PDF)

Frequently asked questions

What is the best fertilizer for greenhouse strawberries?

The strongest results come from pairing your base fertility program with a biological input that improves nutrient uptake. In this China greenhouse trial, adding an OMRI Listed microbial biofertilizer to the same fertilizer program lifted fruit count 24% and held Brix higher all season versus an untreated control.

Can a microbial biofertilizer increase strawberry yield?

Yes. In a head-to-head greenhouse trial, strawberries treated with Sunrise produced 251 berries per plant against 202 in the untreated control, a 24% increase over the season, with a 34% gain at the January peak. The beneficial bacteria and fungi improve nutrient availability and root uptake, so plants set more fruit.

How do you improve Brix or sweetness in strawberries?

Sweetness depends on how efficiently the plant takes up and moves nutrients late in the season. Treated plants here held Brix above 10.7 from December through February, while the untreated control fell from 10.72 to 9.64, about a full Brix point of extra sweetness sustained every month.

Is there an organic or OMRI Listed strawberry fertilizer option?

Yes. Sunrise Soil Probiotic is an OMRI Listed and CDFA registered microbial biofertilizer, so it fits organic production systems and specialty programs. It adds beneficial bacteria and fungi rather than synthetic inputs, and in this trial it improved both yield and fruit quality.

How much more fruit can strawberries produce with a soil probiotic?

In this trial the treated zone set 24% more fruit per plant over three months and 34% more at peak harvest in January. Actual gains depend on variety, system, and program, but the trial shows a clear yield lift from adding the microbial biofertilizer.

How is Sunrise applied to strawberries?

Sunrise is a microbial inoculant worked into the existing fertility and irrigation program, colonizing the root zone so the bacteria and fungi stay active through the season. It is applied alongside your normal fertilizer rather than replacing it.

Does a microbial biofertilizer work in tabletop or greenhouse strawberry systems?

Yes. This trial ran in an elevated tabletop greenhouse, where the treated zone outperformed the untreated control on both fruit count and Brix. The microbes colonize the root zone in container and tabletop media just as they do in field soil.

Will a soil probiotic work alongside my existing strawberry fertilizer program?

That is exactly how it was tested here. Both zones ran the same base fertility program and only the treated block received Sunrise, so the 24% fruit gain and higher Brix came from adding the biofertilizer on top of the grower's normal fertilizer, not from changing it.

sunrise

Product used in this trial

This is the product behind these results. Open its page for full specifications, packaging, and dosing rates.

Trial vs control

Have a lagoon or waste system with the same problem?

Tell us your system size and current numbers. We will recommend a starting dose and send a quote.

Request a Quote