November 24, 2017

Individual berry weight for day-neutral strawberries

As part of this project, we calculated individual fruit size, in grams, of each cultivar by randomly choosing 20 berries per treatment at each harvest.  At the WCROC, the average berry weight (g) across cultivars within the low tunnel was 15.56 g while the open field average was 14.27 g.  At the St. Paul site the average berry weight (g) of each cultivar in the low tunnel was 12.62 g per individual fruit.  The St. Paul non-low tunnel was 11.85 g per individual fruit.  By comparison, 2010-2011 data from the WCROC June-bearing variety trial shows the average berry weight was 11.45 g per individual fruit.  At this point in the project, the day-neutral study is proving to have larger individual fruit size when compared to June-bearing strawberry trials.

Average Berry Weight

LT = low tunnel; PL = open field on raised beds with plastic; SM = straw mulch, raised beds no plastic

Average berry weight (g) of each cultivar and treatment based on 4 replications, with standard error of the means at WCROC

Cultivar

Treatment

Berry weight

se

Albion

LT

15.16

0.42

Albion

PL

14.32

0.32

Evie 2

LT

14.86

0.17

Evie 2

PL

12.96

0.35

Monterey

LT

14.93

0.42

Monterey

PL

13.87

0.71

Portola

LT

18.61

0.17

Portola

PL

14.78

0.12

San Andreas

LT

15.48

0.28

San Andreas

PL

16.52

0.46

Seascape

LT

14.40

0.39

Seascape

PL

13.20

0.68

 

Average berry weight (g) of each cultivar and treatment based on 4 replications, with standard error of the means at St Paul

Cultivar

Treatment

Berry weight

se

Albion

LT

12.33

0.10

Albion

PL

11.82

0.39

Albion

SM

13.59

0.09

EV2

LT

12.63

0.40

EV2

PL

11.61

0.39

EV2

SM

10.81

0.56

Monterey

LT

13.11

0.45

Monterey

PL

11.53

0.78

Monterey

SM

10.39

1.44

Portola

LT

13.00

0.66

Portola

PL

12.87

0.46

Portola

SM

13.41

0.60

San Andreas

LT

13.35

0.93

San Andreas

PL

13.22

0.52

San Andreas

SM

10.40

1.37

Seascape

LT

11.31

0.32

Seascape

PL

10.07

0.61

Seascape

SM

10.69

0.97

Many thanks to the North American Strawberry Growers Association (NASGA) which helped to sustain this project.