Effect of harvest date on onion yield in a northern climate

IF 1.7 4区 农林科学 Q2 HORTICULTURE
T. Terhi Suojala
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引用次数: 7

Abstract

Summary Timing of harvest is an essential factor affecting the quantity, quality and storability of onion yield. This study aimed to establish when no further yield increase is to be expected and to determine the relationship between maturity stage and yield development. Experiments on 4-6 harvests at 9-14 d intervals were conducted at several locations in southern Finland in 1996-1999. Generally little, if any, yield increase was recorded after plants had reached 100% maturity, but in some cases bulb growth continued after complete fall-down of leaves. On the other hand, harvesting before 100% maturity resulted in a yield loss of 0-45% of final yield. Weight loss, and thus energy consumption during drying, was still reduced after complete leaf fall-down. Therefore, it may be concluded that delaying harvest up to 100% maturity, or even longer, ensures that highest yield and lowest drying costs.
北方气候条件下收获日期对洋葱产量的影响
收获时机是影响洋葱产量、品质和贮藏性的重要因素。本研究旨在确定何时不再预期产量增加,并确定成熟期与产量发展之间的关系。1996-1999年,在芬兰南部的几个地点进行了4-6次收获、间隔9-14 d的试验。一般来说,植株达到100%成熟后,产量几乎没有增加,但在某些情况下,鳞茎在叶片完全脱落后仍继续生长。另一方面,在100%成熟之前采收会导致最终产量损失0-45%。在叶片完全脱落后,干燥过程中的重量损失和能量消耗仍然减少。因此,可以得出结论,延迟采收至100%成熟,甚至更长时间,可以确保最高的产量和最低的干燥成本。
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来源期刊
CiteScore
3.90
自引率
5.30%
发文量
67
审稿时长
3 months
期刊介绍: The Journal of Horticultural Science and Biotechnology is an international, peer-reviewed journal, which publishes original research contributions into the production, improvement and utilisation of horticultural crops. It aims to provide scientific knowledge of interest to those engaged in scientific research and the practice of horticulture. The scope of the journal includes studies on fruit and other perennial crops, vegetables and ornamentals grown in temperate or tropical regions and their use in commercial, amenity or urban horticulture. Papers, including reviews, that give new insights into plant and crop growth, yield, quality and response to the environment, are welcome, including those arising from technological innovation and developments in crop genome sequencing and other biotechnological advances.
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