کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5761337 1624443 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partial root-zone drying irrigation in orange orchards: Effects on water use and crop production characteristics
ترجمه فارسی عنوان
آبیاری قطره ای جزئی در باغ های پرتقال: اثرات استفاده از آب و ویژگی های محصول
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
We have studied the effects of partial root-zone drying (PRD) on plant physiological response, plant-soil water dynamics, yield and fruit quality of young orange trees during the irrigation seasons 2013 and 2014 in an orchard located in Eastern Sicily (Southern Italy). The irrigation treatments included: (i) full irrigation (T1), with trees irrigated by supplying 100% of crop water demand using micro-irrigation systems; and (ii) alternate partial root-zone drying (T4), with trees irrigated at 50% of crop water demand. Minimally invasive electrical resistivity tomography (ERT) was adopted to help quantify root-water-uptake (RWU) processes at the finer (decimetric) spatial scale. Results show that, compared with the full irrigation treatment, PRD at 50% of crop water demand (ETc) increased the fruit yield by 20% in 2013 and 10% in 2014. The PRD irrigation treatment, which induces a reduction of the wetted soil volumes, had also obvious positive effects on water use efficiency (WUE), compared to full irrigation. From the results of this study, we concluded that when water resources are limited, PRD at 50% level of ETc is an efficient water saving strategy to increase WUE, while other physiological and growth parameters are practically unaffected.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Agronomy - Volume 82, Part A, January 2017, Pages 190-202
نویسندگان
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