taproot

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taproot

a primary ROOT structure in which one main root forms the major part of the underground system. Taproots are often swollen, serving as storage organs of perennation. Many vegetable crops, such as carrot, swede, sugar beet, have taproots.
References in periodicals archive ?
Weeds like dandelions have taproots. They grow deep into the soil and if their taproots are not pulled entirely, new plants will grow back in a week or two.
Passiflora cincinnata, Passiflora mucronata, Passiflora giberti, Passiflora morifolia and Passiflora edulis (control) developed in polyvinyl chloride tubes of 100 mm in diameter and 150 cm in height, in order to assess plant height, leaf area, number of secondary roots, stem diameter, taproot lenght, root system volume, absolute growth rate, relative growth rate, net assimilation rate, leaf mass ratio and root mass ratio, at 30, 45, 60, 75, 90 and 105 days after transplanting.
All taproots in sandy-loam and clay-loam soils developed secondary roots thicker than 2.0 mm, whereas only 13% of the taproots in sandy soil developed such roots.
Many weeds develop taproots several feet deep that aid in breaking up hardpan layers, thus improving drainage and aeration.
Except for trees with deep taproots, even the largest grow, absorb nutrients and are anchored in only the top two feet of soil.Newly installed plants should be watered immediately with a thorough soaking.
Dozens of eager children lined up along a raised garden bed at Food for Lane County's Grassroots Garden on Saturday morning and speculated about the size of the orange taproots lurking just under the soil.
Figure 4-2 shows the three basic types of root systems: taproots, which have a main central root, and a storage taproot, which acts as a food reservoir to retain surplus food during the winter or adverse periods, fibrous roots, which have many roots of equal size.