University of Maryland Extension

Goldenberry Trials

There are no peer-review published nutrient recommendations for goldenberries, however recommendations by Montes Hernández and Aguirre Rivera (1994) for a similar plant, the tomatillo, suggests a range of 107 to 214 lb N/acre. This should be performed in 3 or 4 split applications between planting in April and middle of August for high tunnel production.

High tunnels were prepared in April 2016 by amending soil with Smartleaf® compost at 4 lb (wet) per square ft, in row (7.9cuft/100 sqft). Three rows (80 sqft per row) were prepared. The compost was 0.5% nitrogen (N) and 0.04% phosphorus (P). A total of 1.6 lb of N and 0.1 lb P (organic, not all available) was applied per row. December 2016 soil tests showed adequate nutrients with an expected nitrogen release (ENR) of 150 lb. No further additions of compost were applied for 2017. 

 

Seed for fruit were purchased from an online vender. Seeds were germinated in early February and grown in plug trays until they were 5 to 8 inches high.  A soils test in September showed adequate nutrients except potassium.  Plants were planted in late March, and assigned positions by variety in each row.  A starter 20-20-20 fertilizer was applied as a soil drench.   Summer fertilizer additions included two 70% potassium nitrate and 30% urea in split applications totaling 34 lb N/acre each.

2016 Harvest

P. pruinosa fruit were harvested seven times between July 29th and November 10th. Fruit fall from plant when ripe.  Approximately 43 lb were collected from 15 plants. This averages about 46 oz per plant over the season.  Potential profit per plant is over $40 for this part of the season (30.5 oz x $1.33 per oz).  Figure 2 shows harvest date and average yield in ounces per plant. Flavor quality of fruit decreased into the fall when sunlight levels decreased, however the plants remained alive 3 weeks after the first hard frost. 

 

2017 Harvest

P. pruinosa fruit were harvested seven times between June 24th and August 15th. Approximately 43 lb were collected from 15 plants. This averages about 46 oz per plant over the season.  Potential profit per plant is over $61 for this part of the season (46 oz x $1.33 per oz).  Figure 2 shows harvest date and average yield in ounces per plant. 

 

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