Articles
Growth and yield performance of new asparagus (Asparagus officinalis L.) cultivars under shading conditions
Article number
1376_7
Pages
43 – 50
Language
English
Abstract
Due to the increasing consumption of fresh asparagus in Korea, there is a need to expand its planting area.
This study compares the growth and yield potential of four current green asparagus cultivars and eight new hybrids bred in the United States under control and shading conditions in Korea.
Seedlings of all cultivars were produced in plug trays filled with commercial growing media.
Two-month-old seedlings were planted in polytunnels with 30 and 70% shading using polyethylene films for the shading treatment.
The control plants were grown in the polytunnel without additional polyethylene films.
Significant differences were found in all observed morphological characteristics of three-month-old plants among current cultivars and new hybrids grown in control conditions. 30% shade delayed the mean days for bud break from 1 to 12 days compared to the control, depending on the cultivar.
The same shading treatment significantly increased spear production and diameter of some cultivars compared to the control and 70% shading treatments.
These results suggested that some new hybrids may be suitable for growing in South Korea and that 30% shading might, to some extent, increase the yield of certain cultivars.
Further experiments are required to determine the long-term yield performance of new cultivars under different environments.
This study compares the growth and yield potential of four current green asparagus cultivars and eight new hybrids bred in the United States under control and shading conditions in Korea.
Seedlings of all cultivars were produced in plug trays filled with commercial growing media.
Two-month-old seedlings were planted in polytunnels with 30 and 70% shading using polyethylene films for the shading treatment.
The control plants were grown in the polytunnel without additional polyethylene films.
Significant differences were found in all observed morphological characteristics of three-month-old plants among current cultivars and new hybrids grown in control conditions. 30% shade delayed the mean days for bud break from 1 to 12 days compared to the control, depending on the cultivar.
The same shading treatment significantly increased spear production and diameter of some cultivars compared to the control and 70% shading treatments.
These results suggested that some new hybrids may be suitable for growing in South Korea and that 30% shading might, to some extent, increase the yield of certain cultivars.
Further experiments are required to determine the long-term yield performance of new cultivars under different environments.
Publication
Authors
N. Cho, T.H. Lee, T.L. Cao, W. Chen, S. Walker, M. Walker, Y.G. Ku
Keywords
bud break, light intensity, new hybrid, spear number, yield
Groups involved
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