Hill System Plastic Mulched Strawberry Production Guide for Colder Areas

Authors: Charles R. O'Dell Extension Horticulturist, Department of Horticulture, Virginia Tech; Jerry Williams, Teaching Hortculturist, Department of Horticulture, Virginia Tech

Publication Number 438-018, Posted March 2000

TABLE 5-A* - Total first year and carry-over second year fresh weight harvested for nine cultivars of strawberry, planted bare-root dormant on 26 June 1997 (early) or by plugs on 21 August 1997 (late). Harvest was from 14 May to 5 June in 1998 and 19 May to 11 June 1999. 1 replication = 12 single plants. N = 4. 6 tons/acre poultry litter was broadcast on cover crop residue 1 year before planting.⁵

Variety	Total Season Fresh Weight
	Early^Z		Late
	1998	1999	1998	1999
Latestar	1.36a¹	1.30a²	0.58a³	1.57a⁴
Marmalada	0.84b	0.73bc	0.38abc	0.46d
Honeoye	0.65bc	0.89b	0.56ab	0.90b
Primetime	0.53bcd	0.62bc	0.26c	0.79bc
Jewel	0.52bcd	0.54bc	0.37abc	0.75bcd
Northeaster	0.35cd	0.45bc	0.28bc	0.60bcd
Allstar	0.32cd	0.42c	0.39abc	0.56cd
Earliglow	0.31cd	0.39c	0.29abc	0.54cd
Delmarvel	0.21d	0.34c	0.25c	0.50cd

* Charlie O'Dell, Jerry Williams, and Roger Harris, VA Tech, Department of Horticulture, Blacksburg, VA.
^Z Mean separation within columns by Duncan's NMRT. P=0.05.
^Y P>F for treatment within each cultivar for 1998 and 1999.
¹ 1.36 qts/plant @ 14" in-row spacing = 20,400 qts/acre, 1st year
² 1.30 qts/plant @ 14" in-row spacing = 19,500 qts/acre, 2nd year
³ 0.58 qts/plant @ 14" in-row spacing = 8,700 qts/acre, 1st year
⁴ 1.57 qts/plant @ 14" in-row spacing = 23,550 qts/acre, 2nd year
⁵ 6 tons poultry litter/A supplied all nitrogen and phosphorus needs for 1st year crop, spring N fertigations at 5 lbs N/A/week required for second year's crop, 50# N/A spring fertigations total.

TABLE 5-B - Total 1999 fruit weight (kg) and qts/plant of 'Cavendish,' 'Chandler,' and 'Jewel' plugs planted on 31 July (Early), 14 August (Mid-S) and 2 September 1998 (Late). One replication = 6 plants. n = 4.

MEAN FRESH FRUIT WEIGHT (KG/PLOTS) & QTS/PLANT

Cavendish Chandler Jewel

Early^z (2.39a) (2.07b) (1.96a)

0.58 qt 0.51 qt 0.48 qt

Mid-S (2.23ab) (2.53a) (1.31b)

0.55 0.62 0.32

Late (1.59b) (2.65a) (1.37b)

0.39 0.66 0.33

^z Mean separation within columns by Duncan's NMRT.
P < 0.05.

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	Cavendish	Chandler	Jewel
Early^z	(2.39a)	(2.07b)	(1.96a)
	0.58 qt	0.51 qt	0.48 qt
Mid-S	(2.23ab)	(2.53a)	(1.31b)
	0.55	0.62	0.32
Late	(1.59b)	(2.65a)	(1.37b)
	0.39	0.66	0.33