Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil

Carrots (Daucus carota L. var sativus) in the midwestern United States are generally raised commercially on sandy-loam or muck soils. Some smaller growers may not have the luxury of an ideal soil type, so raised beds are often recommended to improve taproot growth. To determine specific yield and sh...

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Main Author: Charlie L. Rohwer
Format: Article
Language:English
Published: American Society for Horticultural Science (ASHS) 2021-05-01
Series:HortScience
Subjects:
Online Access:https://journals.ashs.org/hortsci/view/journals/hortsci/56/6/article-p722.xml
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spelling doaj-a996637e5ada43d9a76767cfec32d2462021-06-17T21:25:32ZengAmerican Society for Horticultural Science (ASHS)HortScience2327-98342021-05-01566722729https://doi.org/10.21273/HORTSCI15823-21Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam SoilCharlie L. RohwerCarrots (Daucus carota L. var sativus) in the midwestern United States are generally raised commercially on sandy-loam or muck soils. Some smaller growers may not have the luxury of an ideal soil type, so raised beds are often recommended to improve taproot growth. To determine specific yield and shape responses of carrots to raised-bed culture in heavy soil, three hybrids (‘Cupar’, ‘Envy’, and ‘Naval’) were grown in 2019 and 2020 on raised or flat beds in clay-loam soil. In addition, two seeding rates (high or low) were incorporated into the split-split plot design. ‘Cupar’ was larger and less misshapen than the other hybrids, but total marketable yields were similar among all three. ‘Naval’ was the most cylindrical. High seeding rate generally resulted in more numerous but smaller marketable roots and no change in total marketable weight. Raised beds caused a 10.6% increase in total marketable weight by allowing more marketable roots classified as “short” (between 76 and 127 mm long, diameter >25 mm) to grow to lengths more than 127 mm long. The average taproot cylindricity was increased and diameter decreased by growing on raised beds. Soil penetration resistance at 7.6 cm was correlated with many of the measured responses.https://journals.ashs.org/hortsci/view/journals/hortsci/56/6/article-p722.xmlcylindricitydaucus carotaeffects sizeflat bedplant population
collection DOAJ
language English
format Article
sources DOAJ
author Charlie L. Rohwer
spellingShingle Charlie L. Rohwer
Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
HortScience
cylindricity
daucus carota
effects size
flat bed
plant population
author_facet Charlie L. Rohwer
author_sort Charlie L. Rohwer
title Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
title_short Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
title_full Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
title_fullStr Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
title_full_unstemmed Carrot Yield and Shape Altered by Seeding Rate and Raised Beds in Clay-loam Soil
title_sort carrot yield and shape altered by seeding rate and raised beds in clay-loam soil
publisher American Society for Horticultural Science (ASHS)
series HortScience
issn 2327-9834
publishDate 2021-05-01
description Carrots (Daucus carota L. var sativus) in the midwestern United States are generally raised commercially on sandy-loam or muck soils. Some smaller growers may not have the luxury of an ideal soil type, so raised beds are often recommended to improve taproot growth. To determine specific yield and shape responses of carrots to raised-bed culture in heavy soil, three hybrids (‘Cupar’, ‘Envy’, and ‘Naval’) were grown in 2019 and 2020 on raised or flat beds in clay-loam soil. In addition, two seeding rates (high or low) were incorporated into the split-split plot design. ‘Cupar’ was larger and less misshapen than the other hybrids, but total marketable yields were similar among all three. ‘Naval’ was the most cylindrical. High seeding rate generally resulted in more numerous but smaller marketable roots and no change in total marketable weight. Raised beds caused a 10.6% increase in total marketable weight by allowing more marketable roots classified as “short” (between 76 and 127 mm long, diameter >25 mm) to grow to lengths more than 127 mm long. The average taproot cylindricity was increased and diameter decreased by growing on raised beds. Soil penetration resistance at 7.6 cm was correlated with many of the measured responses.
topic cylindricity
daucus carota
effects size
flat bed
plant population
url https://journals.ashs.org/hortsci/view/journals/hortsci/56/6/article-p722.xml
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