Abstract
The effects of soil forming (SF) and plant density (PD) on the carrot yield, mean root weight and internal quality was studied in field experiments in 1993 and 1994. ‘Fontana BZ’ carrots were grown in flat land, a narrow ridge, a broad ridge, and a compacted broad ridge soil configurations with low (LD) and high (HD) target plant densities, four and seven hundred thousand carrots per hectar. The total and marketable yields were larger in flat land and narrow ridge than in the broad- and compacted broad ridges in 1993 and in 1994 at HD. The number of marketable carrots were highest with the flat land soil configurations in both years. A dry spring in 1993 favored flat land growing conditions; in ridges the fine sand dried quickly. SF did not influence the mean weight of a marketable carrot in 1993, but in 1994 the narrow ridge configuration resulted in heavier carrots than the flat land or broad ridge growing conditions. In the climatically more unfavorable year of 1993, SF and PD affected quality; dry matter was lower in flat land than in the ridges. At HD, the flat land soil configuration produced higher glucose and fructose than carrots grown in the narrow and broad ridges. Dietary fiber and vitamin C were higher in narrow ridge than in compacted broad ridge grown carrots. At LD the flat land and broad ridge produced highest and compacted broad ridge the lowest beta-carotene contents; alpha-carotene was higher at LD than at HD.
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References
Strandberg JO, White JM (1979) Effect of soil compaction on carrot roots. J Am Soc Hort Sci 104: 344-349.
Pietola L (1995) Effect of soil compactness on the growth and quality of carrot. Agric Sci Finland 4(2): 144-237.
White JM (1978) Soil preparation effects on compaction, carrot yield, and root characteristics in organic soil. J Am Soc Hortic Sci 103(4): 433-435.
Millette JA, Vigier B, Hogue EJ (1981) Seedbed preparation for carrot production on organic soil. J Am Soc Hortic Sci 106(4): 491-493.
Olymbios CM, Schwabe WW (1977) Effects of aeration and soil compaction on growth of carrot. J Hortic Sci 52: 489-500.
Agung IGAM Sri, Blair GJ (1989) Effects of soil bulk density and water regime on carrot yield harvested at different growth stages. J Hortic Sci 64: 17-25.
Taksdal G (1984) Effects of tractor wheelings on carrot quality. Acta Hortic 163: 255- 260.
Bleasdale JKA (1967) The relationship between the weight of a plant part and total weight as affected by plant density. J Hort Sci 42: 51-58.
Salter PJ, Currah IE, Fellows JR (1980) Further studies on the effects of plant density, spatial arrangement and time of harvest on yield and root size in carrots. J Agr Sci 94: 465-478.
McCollum TG, Locascio SJ, White JM (1986) Plant density and row arrangement effects on carrot yields. J Am Soc Hortic Sci 111(5): 648-651.
Banga O, Bruyn JW de (1964) Carotenogenesis in carrot roots. Netherlands J Agric Sci 12: 204-220.
Li B, Schuhmann P (1980) Gas-liquid chromatographic analysis of sugars in ready-to-eat breakfast cereals. J Food Sci 45: 138-141.
Haila K, Kumpulainen J, Häkkinen U, Tahvonen R (1992) Sugar and organic acid contents of vegetables consumed in Finland during 1988-1989. J Food Comp and Anal 5: 100-107.
Lee SC, Prosky L, De Vries JW (1992) Determination of Total, Soluble, and Insoluble Dietary Fibre in Foods - Enzymatic-Gravimetric Method, MES-TRIS Buffer, Collaborative Study. J AOAC Int 75: 395-416.
Speek A, Schrijver J, Schreurs W (1984) Fluorometric determination of total vitamin C and total isovitamin C in foodstuffs and beverages by high-performance liquid chromatography with precolumn derivatization. J Agri and Food Chem 32: 352-355.
Hägg M, Ylikoski S, Kumpulainen J (1994) Vitamin C, α and β-carotene contents in vegetables consumed in Finland 1988-1989 and 1992-1993. J Food Comp and Anal 7: 252-259.
Ollilainen V-M, Heinonen M, Linkola E, Varo P, Koivistoinen P (1988) Carotenoids and retinoids in Finnish foods: Meat and meat products. J Food Comp and Anal 1: 178-188.
Hägg M (1994) Effects of various commercially available enzymes in the liquid chromatographic determination with external standardization of thiamin and riboflavin in foods. J AOAC Int 77(3): 681-686.
Milliken GA, Johnson DE (1984) Analysis of Messy Data, Vol. 1: Designed experiments. New York: Van Nostrand Reinhold Company.
SAS Institute Inc. (1992) SAS Technical Report P-229, SAS/STAT Software: Changes and Enhancement, Release 6.07. Cary, NC: SAS Institute Inc.
SAS Institute Inc. (1990a) SAS Pricedures Guide, Version 6, 3th edn. Cary, NC: SAS Institute Inc.
SAS Institute Inc. (1990b) SAS/GRAPH Software: Reference, Version 6, Volume 2, 1st edn. Cary, NC: SAS Institute Inc.
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Evers, AM., Tuuri, H., Hägg, M. et al. Soil forming and plant density effects on carrot yield and internal quality. Plant Foods Hum Nutr 51, 283–294 (1997). https://doi.org/10.1023/A:1007955818503
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DOI: https://doi.org/10.1023/A:1007955818503