Vine desiccation characteristics and influence of time and method of top kill on yields and quality of four cultivars of potato (Solanum tuberosum L.)
Vine desiccation characteristics and influence of time and method of top kill on yields and quality of four cultivars of potato (Solanum tuberosum L.)
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4个马铃薯品种的藤蔓干燥特性及顶杀时间和方式对产量和品质的影响
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发表时间：
2007
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通讯作者：
D. Waterer
中科院分区：
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作者：
D. Waterer
马铃薯作物通常在收获前几周进行化学干燥，以促进块茎成熟并促进收获操作。本研究比较了几个马铃薯品种在4个不同处理时期对机械灭顶和敌草畏干燥处理的产量和加工品质的影响。在化学干燥的作物中，也评估了年份和品种对葡萄干燥速度和程度的影响。Ranger Russet的干燥速度比Russet Burbank、Shepody或Russet Norkotah慢，可能是因为它的树冠更大。平均超过3年和4个处理日期，甩梢使四个品种的产量比顶端化学干燥平均减少4%。如果使用干燥剂后的条件有利于树冠逐渐变小，那么连结作物和化学干燥作物之间的产量差异就会增大。化学干燥处理的比重均等于或高于此。
Potato crops are typically flailed or chemically desiccated several weeks prior to harvest to promote tuber maturity and facilitate harvest operations. This study evaluated how yields and processing quality of several potato cultivars responded to mechanical top kill versus desiccation with diquat at four different treatment dates. The influences of year and cultivar on the rate and extent of vine desiccation were also evaluated in the chemically desiccated crop. The cultivar Ranger Russet was slower to desiccate than Russet Burbank, Shepody or Russet Norkotah, likely because of its larger canopy. Averaged over 3 yr and four treatment dates, flailing reduced yields of the four cultivars tested by an average of 4% relative to chemical desiccation of the tops. The yield difference between flailed and chemically desiccated crops increased if conditions after application of the desiccant favored a gradual die down of the canopy. Specific gravities of the chemically desiccated treatments were equal to or highe...