scholarly journals Effect of Low Tunnels and Planting Dates on the Fruit Quality of Organic Day-Neutral Strawberries in High Tunnels in North Carolina

2020 ◽  
Vol 20 (sup2) ◽  
pp. S1036-S1053
Author(s):  
Tekan S. Rana ◽  
Sanjun Gu ◽  
Jianmei Yu
Keyword(s):  
North Carolina ◽  
Fruit Quality ◽  
Planting Dates ◽  
High Tunnels ◽  
Low Tunnels

scholarly journals Growth and Yield of Organic Day-neutral Strawberries in Low Tunnels inside High Tunnel in North Carolina

HortScience ◽  
2020 ◽  
Vol 55 (3) ◽  
pp. 336-343 ◽  
Author(s):  
Tekan S. Rana ◽  
Sanjun Gu
Keyword(s):  
North Carolina ◽  
Economic Value ◽  
Total Yield ◽  
Growth Yield ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Planting Dates ◽  
San Andreas ◽  
High Tunnels ◽  
Low Tunnels

North Carolina’s fresh strawberry has a $21.4 million economic value, which is primarily from short-day cultivars in the annual plasticulture system. Organic and off-season day-neutral strawberries have higher prices than the conventional, field-grown strawberries. There have been no published studies on suitable cultivars, transplanting dates, and additional winter protection methods for day-neutral strawberry production in high tunnels in North Carolina. The objective of this study was to examine the effect of low tunnels, planting dates, and cultivars on growth, yield, and season extension potential of day-neutral strawberries in high tunnels. Plugs of day-neutral cultivars Albion and San Andreas were either transplanted in raised beds covered with low tunnels (LT) or without low tunnels (control, NLT), inside high tunnels on the N.C. A&T State University Farm (Greensboro, NC) on two different planting dates, which were 1 Sept. (D1) and 29 Sept. (D2) of 2016, or 9 Sept. (D1) and 10 Oct. (D2) of 2017, respectively. A completely randomized design with split-split plots was used. LT did not significantly affect the total yield and plant phenology, but they promoted the first harvest by a week compared with NLT, which resulted in higher yield during the winter of both years. D1 promoted about 24 days of earlier harvest than D2. ‘Albion’ had an earlier bloom and harvest date (by 1 to 3 weeks and 2 to 3 weeks, respectively) than ‘San Andreas’. Strawberry yield was low in the fall season, but it started to increase from January, peaked in April, and decreased again in May. D1 increased the whole season’s marketable yield of ‘Albion’ (430.3 g/plant), compared with that of ‘San Andreas’ (330.9 g/plant). During the winter, ‘Albion’ had a higher yield than ‘San Andreas’. Our study indicates that LT inside HT might not significantly improve the plant growth, early harvest, or total yield. Planting dates had no consistent effect on yield. It was suggested that ‘Albion’ should be considered for high winter yields, and ‘San Andreas’ be a cultivar with high yields of the entire season in high tunnels.

scholarly journals Production and quality of strawberry cultivated under different colors of low tunnel cover

2017 ◽  
Vol 35 (3) ◽  
pp. 364-370 ◽  
Author(s):  
Juliane M Henschel ◽  
Juliano TV Resende ◽  
Patrícia C Giloni-Lima ◽  
André R Zeist ◽  
Renato B Lima Filho ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Light Quality ◽  
Specific Response ◽  
Light Spectrum ◽  
Vegetative Traits ◽  
Low Tunnels ◽  
Social Importance ◽  
Physiological And Biochemical ◽  
Lower Production

ABSTRACT Strawberry is a crop of great economic and social importance. Its fruits are appreciated both for their flavor and nutraceutical potential. Some studies confirm that light quality influences plant physiology. Thus, the aim of this study was to investigate if changes in light spectrum, provided by low tunnels, can improve vegetative traits, as well as, production and fruit quality of strawberry. The authors used six tunnel covers (red, yellow, blue, green, transparent and opaque and one control, without cover), and two cultivars: a short photoperiod cultivar (Camarosa) and a neutral photoperiod cultivar (Albion). Experiment was evaluated in two seasons: production and plant development first; and then, post-harvest quality. Overall, Camarosa showed higher vegetative growth, lower production, and better fruit quality than Albion. Due to the complexity of physiological and biochemical responses, each trait evaluated showed a specific response to light changes. The red, blue, yellow and green covers did not show any significant improvement comparing with transparent and opaque covers. Thus, the authors suggest the use of the latter ones which have already been used commercially.

EFFECT OF PLASTIC MULCHES ON YIELD AND FRUIT QUALITY OF STRAWBERRY PLANTS GROWN UNDER HIGH TUNNELS

2011 ◽  
pp. 1327-1332 ◽  
Author(s):  
Y. Medina ◽  
A. Gosselin ◽  
Y. Desjardins ◽  
L. Gauthier ◽  
R. Harnois ◽  
...  
Keyword(s):  
Fruit Quality ◽  
High Tunnels

scholarly journals Improving Growth and Productivity of Early-season High-tunnel Tomatoes with Targeted Temperature Additions

HortScience ◽  
2012 ◽  
Vol 47 (6) ◽  
pp. 733-740 ◽  
Author(s):  
Britney Hunter ◽  
Dan Drost ◽  
Brent Black ◽  
Ruby Ward
Keyword(s):  
Energy Requirement ◽  
High Elevation ◽  
Plant Performance ◽  
Plastic Mulch ◽  
Soil Warming ◽  
Planting Dates ◽  
Early Season ◽  
High Tunnel ◽  
High Tunnels ◽  
Low Tunnels

In northern climates where the growing season is shortened by cool spring conditions, high tunnels make it possible to plant and produce tomatoes (Solanum lycopersicum L.) at least 1 month earlier than in the field. However, limited high-tunnel research has been performed in arid high-elevation regions that experience extreme diurnal temperature fluctuations. High tunnels are designed to be passively heated; therefore, additional protection from frost may be warranted if growers wish to plant significantly earlier than normal. Low tunnels built within a high tunnel reduce the energy requirement by concentrating heat around the plants, particularly when a heat source is placed inside the low tunnel. ‘Sunbrite’ tomatoes were transplanted through black plastic mulch in four high tunnels in North Logan, UT (lat. 41.73° N, long. 111.83° W, 1382 m elevation) on 17 Mar., 30 Mar., and 7 Apr. in 2009 and on 19 Mar., 30 Mar., and 9 Apr. in 2010. Low tunnels were constructed over each row, and three supplemental heat treatments (unheated, soil-warming cables, and soil-warming cables plus 40-W incandescent lights) were tested to improve plant performance. The highest total marketable yield was achieved for earliest planting dates in both 2009 and 2010. In 2009, early-season yield was significantly greater when both the soil + air were heated, but only for the earliest planting date. In 2010, soil heat alone and in conjunction with air heat significantly improved early-season yield. Information gathered in this study on planting dates, yield, and energy costs provides valuable production and economic information to growers in arid high-elevation climates who desire the benefits of growing early-season tomatoes in high tunnels.

scholarly journals Influence of Fall Nitrogen and Spring Nitrogen—Potassium Applications on Yield and Fruit Quality of `Chandler' Strawberry

1997 ◽  
Vol 122 (2) ◽  
pp. 290-295 ◽  
Author(s):  
G.S. Miner ◽  
E.B. Poling ◽  
D.E. Carroll ◽  
L.A. Nelson ◽  
C.R. Campbell
Keyword(s):  
North Carolina ◽  
Fruit Quality ◽  
Sandy Loam ◽  
Soluble Solids ◽  
Soil Test ◽  
Plastic Mulch ◽  
Total N ◽  
Black Plastic ◽  
Main Effects

Annual-hill strawberry (Fragaria ×ananassa Duch.) production with black plastic mulch and drip irrigation is gaining popularity in North Carolina. Two experiments (E1 and E2) were conducted on a Wagram loamy sand (Arenic Kandiudult) in 1992 and on a Norfolk sandy loam (Typic Kandiudult) in 1993 to investigate the effects of fall-applied N and spring-applied N and K on `Chandler' strawberry yield and fruit quality. E1 treatments included factorial combinations of banded fall-applied N (0, 34, and 67 kg·ha-1) and drip spring-applied N (0, 0.19, 0.37, 0.56, and 0.75 kg·ha-1·d-1 and 0, 0.37, 0.75, and 1.12 kg·ha-1·d-1 in 1992 and 1993, respectively). E2 treatments included combinations of drip spring-applied N (0.56, 1.12, 1.68, and 2.24 kg·ha-1·d-1) and K (0.46, 1.39, and 2.32 kg·ha-1·d-1 and 0, 0.75, 1.49, and 2.24 kg·ha-1·d-1 in 1992 and 1993, respectively). There were no significant interactions among main effects for any of the measured variables. Market yield maximized with total N at ≈120 kg·ha-1 with one-half banded in the fall and the remainder drip-applied in the spring. Fruit firmness decreased with increasing N rate. Fruit pH and concentrations of total acids and soluble solids were not affected by N treatments, but soluble solids increased as the harvest season progressed. Plant crown number was not affected by N treatment but crown yield increased with N rate similar to market yield. There was no response to drip-applied K for any variable in either year. Based on soil test, fall-applied K (broadcast-soil incorporated) met the K requirements both years.

Culture and fruit quality of rambutan (Nephelium lappaceumL.) in the Soconusco region, Chiapas, Mexico

Fruits ◽  
2004 ◽  
Vol 59 (5) ◽  
pp. 339-350 ◽  
Author(s):  
Eva Johanna Maria Vanderlinden ◽  
H. Alfred Juergen Pohlan ◽  
Marc J.J. Janssens
Keyword(s):  
Fruit Quality
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