Horticulture, Environment, and Biotechnology : HEB

Korean Society of Horticultural Science (한국원예학회)
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Response of Asparagus (Asparagus officinalis) Growth to N-(2-Chloro-4-Pyridyl)-N’-Phenylurea Application

Ku, Yang Gyu;Woolley, D.J.;Nichols, M.A.

  • Published : 20060000
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Abstract

The purpose of this research was to investigate the effect of N-(2-chloro-4-pyridyl)-N’-phenylurea (CPPU) application to Asparagus officinalis foliage (foliar spray and foliar dip) and roots (crown soaking) on fern number, fern height, axillary bud break, cladophyll length and diameter, root number, and bud production, as these may affect photosynthetic rate or bud number limitation of yield. CPPU applied as a root soak decreased numbers of ferns, roots, and buds, fern height, fresh and dry weights (fern, rhizome, and root), and total dry weight. In contrast, CPPU as a foliar spray or dip stimulated the height of initial ferns, but decreased the height of subsequent ferns. All CPPU treatments significantly enhanced axillary bud break and stimulated axillary shoot length compared to the control. CPPU was also effective in promoting cladophyll diameter and length. However, CPPU applied as a foliar spray or dip did not influence the ratio of root mass to crown bud numbers. Root to shoot ratio of CPPU foliar spray and dip treated plants was lower than control plants, indicating that although CPPU as a foliar spray and dip increased fresh and dry weight of fern, number of roots and buds, and root dry weight were not increased in proportion.

Keywords

References

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