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Evaluation of the risks and profitability for early planting dates and bolt-reducing strategies for Quebec celery production.

机译:评估早期种植日期的风险和获利能力以及魁北克芹菜生产的减螺栓策略。

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摘要

The risks and profitability associated with four early planting dates, and three different types of bolting risk reduction strategies, were evaluated for Quebec celery production. The four planting dates studied were April 17 th, April 24th, May 1st and May 8 th. The impacts on yield if plants were harvested after eleven week, twelve, thirteen, and fourteen weeks in the field were investigated. The three risk reduction strategies considered were plants grown from planting until June 2nd with no row covers, under floating row covers of spunbonded polyester (Agryl P17, Plastitech) and under floating row covers made of clear, perforated polyethylene (Plastitech). The results suggest that the floating row covers can help plants reach the required market standards sooner that if no row covers were used from the planting date investigated until June 2nd. At the earliest two planting dates, the results suggest that row covers may significantly suppress bolting and allow greater yields at earlier harvest dates. The results also suggest that row covers may provide an advantage at later planting dates, as they may allow for the plants to reach marketable standards sooner. The results also suggest that there is a 50 percent chance of encountering bolting rate of 30 percent or higher if transplanting plants on April 17th. The row covers reduced the probability that plants will bolt to close to zero at for all four planting dates. The most profitable strategy was determined to be planting on April 17th, growing the plants under row covers made of spunbonded polyester (Agryl P17, Plastitech) from planting until June 2nd and then harvesting after the plants had been in the field for thirteen weeks.
机译:对魁北克芹菜生产评估了与四个早期播种日期以及三种不同类型的抽穗风险降低策略相关的风险和获利能力。研究的四个播种日期为4月17日,4月24日,5月1日和5月8日。研究了在田间十一周,十二周,十三周和十四周后收获植物后对产量的影响。考虑的三种降低风险的策略是从种植到6月2日,没有行盖的植物,在纺粘聚酯的浮动行盖下(Agryl P17,Plastitech),在由透明的穿孔聚乙烯制成的浮动行盖下(Plastitech)。结果表明,如果从调查的种植日期到6月2日之间没有使用行盖,则浮动行盖可以帮助植物更快地达到所需的市场标准。结果表明,在最早的两个播种日期,行盖可能会显着抑制抽ing,并在较早的收获日期提高产量。结果还表明,行盖可能在以后的播种日期提供优势,因为它们可以使植株尽快达到适销对路的标准。结果还表明,如果在4月17日进行植物移植,则发生螺栓率达到30%或更高的机会为50%。该行覆盖降低了在所有四个播种日期植物将螺栓抽成零附近的可能性。确定了最有利可图的策略是在4月17日开始种植,从种植到6月2日,在由纺粘聚酯(Agryl P17,Plastitech)制成的行盖下种植植物,直到植物进入田间十三周后再收获。

著录项

  • 作者

    Dessureault, Darlene.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Agricultural economics.;Agronomy.
  • 学位 M.Sc.
  • 年度 2005
  • 页码 161 p.
  • 总页数 161
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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