Scholarlink

Purpose <p>Adequate water availability is critical for producing hazelnuts with high nutritional content. However, the availability of water for irrigation is becoming increasingly limited due to increased demand and changing precipitation patterns. Adequate water management is fundamental for simultaneously maximizing production, quality, and soil health.</p> Methods <p>Here, we studied the effects at the end of three years of irrigation levels (150%, 100%, 75%, and 50% of the water replacement of potential evapotranspiration [ETp]) on soil physicochemical properties (organic matter, aggregate stability, texture, pH, and total elements) and soil biological properties (nematode abundance and soil enzymes), in hazelnut orchards of two localities (Coihueco and Ñiquén) in Chile that differed in their fertility and soil properties.</p> Results <p>Irrigation consistently changed the soil physiochemistry but did not modify its biological properties. Lower irrigation (50% ETp) reduced the redox potential and increased the pH of the soil compared with higher irrigation doses (100% ETp). Locality was the main driver of physicochemical and biological properties of soil. Coihueco, the site with greater OM and nutrients (P, S, Ca, and Zn), had greater nematode abundance (268%) and enzymatic activity as β-glucosidase (162%) and N-acetyl-β-glucosaminidase (145%) than Ñiquén. Other effects of irrigation were more evident in Coihueco, where higher irrigation (150% ETp) decreased clay and Ba (56%) and increased the ratio of CP (85%) and NP (206%) compared to lower irrigation (50% ETp).</p> Conclusions <p>Doses below 150% ETp are adequate for maintaining soil functionality, particularly in high-fertility areas. We recommend irrigating hazelnut trees with 50% ETp to conserve water resources, while simultaneously maintaining soil function.</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

Reduced Irrigation Levels Maintain Nematode Abundance and Soil Enzyme Activities in Hazelnut (Corylus Avellana L.) Orchards in South-Central Chile

  • 期刊论文

  • 发表日期：

    2025年4月23日

查看全文
  • Matías Betancur,
  • Raúl Ochoa-Hueso,
  • Jorge Retamal-Salgado,
  • Hamil Uribe,
  • Mauricio Schoebitz

摘要

Purpose

Adequate water availability is critical for producing hazelnuts with high nutritional content. However, the availability of water for irrigation is becoming increasingly limited due to increased demand and changing precipitation patterns. Adequate water management is fundamental for simultaneously maximizing production, quality, and soil health.

Methods

Here, we studied the effects at the end of three years of irrigation levels (150%, 100%, 75%, and 50% of the water replacement of potential evapotranspiration [ETp]) on soil physicochemical properties (organic matter, aggregate stability, texture, pH, and total elements) and soil biological properties (nematode abundance and soil enzymes), in hazelnut orchards of two localities (Coihueco and Ñiquén) in Chile that differed in their fertility and soil properties.

Results

Irrigation consistently changed the soil physiochemistry but did not modify its biological properties. Lower irrigation (50% ETp) reduced the redox potential and increased the pH of the soil compared with higher irrigation doses (100% ETp). Locality was the main driver of physicochemical and biological properties of soil. Coihueco, the site with greater OM and nutrients (P, S, Ca, and Zn), had greater nematode abundance (268%) and enzymatic activity as β-glucosidase (162%) and N-acetyl-β-glucosaminidase (145%) than Ñiquén. Other effects of irrigation were more evident in Coihueco, where higher irrigation (150% ETp) decreased clay and Ba (56%) and increased the ratio of CP (85%) and NP (206%) compared to lower irrigation (50% ETp).

Conclusions

Doses below 150% ETp are adequate for maintaining soil functionality, particularly in high-fertility areas. We recommend irrigating hazelnut trees with 50% ETp to conserve water resources, while simultaneously maintaining soil function.