Influence of Shade Treatment on Plant Growth Characteristics and Spear Production in Five Asparagus (Asparagus officinalis L.) Cultivars

• Published in: Weon'ye gwahag gi'sulji Vol. 39; no. 1; pp. 37 - 48
• Main Authors: Shawon, Rayhan Ahmed, Ha, Seo Yeon, Lee, Tae Heon, Cao, Thi Luyen, Kim, Ho Cheol, Bae, Jong Hyang, Ku, Yang Gyu
• Format: Journal Article
• Language: English
• Published: 한국원예학회HST 01.01.2021; 한국원예학회
• Subjects: 농학; bud break; walker deluxe; bud number; spear number; correlation
• ISSN: 1226-8763; 2465-8588
• DOI: 10.7235/HORT.20210004

The objective of this study was to investigate the influence of a shade treatment on plant growthcharacteristics, bud break, and spear number of five asparagus (Asparagus officinalis L.) cultivars(Apollo, Atlas, Grande, UC157, and Walker Deluxe) and determine the most appropriate cultivarfor cultivation in a shaded rain-shelter house. For the experiment, two-month-old seedlings weregrown in the rain-shelter house with 30% shade using polyethylene film on the roof of therain-shelter house, whereas the control plants were grown in a rain-shelter house without theadditional layer of polyethylene. The shade treatment significantly increased the plant height, shootnumber, shoot number per week, and bud number, but did not affect the mean number of days to budbreak. The number of spears on asparagus grown in the shade was significantly higher than in thecontrol. Under the shade treatment, Walker Deluxe and UC157 showed significantly higher shootnumber and shoot number per week than the other cultivars. Compared to other cultivars, WalkerDeluxe produced the highest bud number. In the control condition, Grande produced a highernumber of shoots, shoots per week, buds, and roots than in the shade treatment. However, the shadetreatment increased the ratio of spear numbers to bud numbers of Grande, resulting in a highernumber of spears. Walker Deluxe with shade treatment had higher shoots, shoots per week, buds,roots, and spears than the control. These results suggest that Grande is more suited for growth in arain-shelter house without shade treatment but that Walker Deluxe is more appropriate forcultivating in a rain-shelter house with 30% shade. KCI Citation Count: 0