Scholarlink

Purpose <p>This study aimed to evaluate the effect of increasing potassium (K) rates above published critical soil test values on fruit firmness, size, and weight.</p> Methods <p>Blueberries ʻDukeʼ and ʻLegacyʼ were studied during two consecutive seasons at three commercial farms (soils entisol, inceptisol and andisol) in south-central Chile and involved five treatments (0, 67, 133, 200, and 267&#xa0;kg K ha<sup>-1</sup>).</p> Results <p>Increased potassium rates had an effect on the physical quality of blueberries grown in Entisol soil only when 267&#xa0;kg of K per hectare was applied. The highest values for ʻDukeʼ in the three soils were firmness between 164 and 181&#xa0;g mm<sup>-1</sup>, size between 15.1 and 16.4&#xa0;mm, and weight between 1.53 and 1.92&#xa0;g. As for ʻLegacyʼ, firmness was between 148 and 171&#xa0;g mm<sup>-1</sup>, size between 16.2 and 16.6&#xa0;mm, and weight between 1.92 and 2.12&#xa0;g.</p> Conclusions <p>While no general effect was observed, limited responses in the fruit physical quality occurred under Entisol conditions. In Inceptisol and Andisol soils with high initial K availability, increasing K rates did not affect fruit quality attributes. Under Entisol conditions, particularly for the ‘Duke’ cultivar, higher K rates resulted in limited but statistically significant improvements in certain fruit quality parameters.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effects on Increasing Potassium Rates on Fruits Physical Quality of Northern Highbush Blueberry Grown in Different Soil Types

  • 期刊论文

  • 发表日期：

    2026年6月27日

查看全文
  • Juan Hirzel,
  • Jorge Retamal-Salgado,
  • Yasna Tapia

摘要

Purpose

This study aimed to evaluate the effect of increasing potassium (K) rates above published critical soil test values on fruit firmness, size, and weight.

Methods

Blueberries ʻDukeʼ and ʻLegacyʼ were studied during two consecutive seasons at three commercial farms (soils entisol, inceptisol and andisol) in south-central Chile and involved five treatments (0, 67, 133, 200, and 267 kg K ha-1).

Results

Increased potassium rates had an effect on the physical quality of blueberries grown in Entisol soil only when 267 kg of K per hectare was applied. The highest values for ʻDukeʼ in the three soils were firmness between 164 and 181 g mm-1, size between 15.1 and 16.4 mm, and weight between 1.53 and 1.92 g. As for ʻLegacyʼ, firmness was between 148 and 171 g mm-1, size between 16.2 and 16.6 mm, and weight between 1.92 and 2.12 g.

Conclusions

While no general effect was observed, limited responses in the fruit physical quality occurred under Entisol conditions. In Inceptisol and Andisol soils with high initial K availability, increasing K rates did not affect fruit quality attributes. Under Entisol conditions, particularly for the ‘Duke’ cultivar, higher K rates resulted in limited but statistically significant improvements in certain fruit quality parameters.