2018 California

Environmental evaluation of high-value agricultural produce with diverse water sources: case study from Southern California

Authors: Bell, E.; Stokes-Draut, J.; Horvath, A.

Meeting agricultural demand in the face of a changing climate will be one of the major challenges of the 21st century. California is the single largest agricultural producer in the United States but is prone to extreme hydrologic events, including multi-year droughts. Ventura County is one of California's most productive growing regions but faces water shortages and deteriorating water quality. The future of California's agriculture is dependent on our ability to identify and implement alternative

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2021 Multiple

Water management and salinity adaptation approaches of Avocado trees: A review for hot-summer Mediterranean climate

Authors: Kourgialas, N.; Dokou, Z.

The production and consumption of avocado has increased significantly over the past years, experiencing a steady expansion into new markets around the world. This review paper focuses on avocado cultivation in its new markets with hot-summer Mediterranean climate. A significant literature gap exists on the viability of this crop in such data environments which experience limited availability of water in the summer exacerbated by climate change and potential salinity issues in irrigation water, typical

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2021 Israel

Rootstock-Dependent Response of Hass Avocado to Salt Stress

Authors: Lazare, S.; Cohen, Y.; Goldshtein, E.; Yermiyahu, U.; Ben-Gal, A.; Dag, A.

Salt stress is a major limiting factor in avocado (Persea americana) cultivation, exacerbated by global trends towards scarcity of high-quality water for irrigation. Israeli avocado orchards have been irrigated with relatively high-salinity recycled municipal wastewater for over three decades, over which time rootstocks were selected for salt-tolerance. This study's objective was to evaluate the physiological salt response of avocado as a function of the rootstock. We irrigated fruit-bearing 'Hass'

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2020 Israel

Mitigating negative effects of long-term treated wastewater application via soil and irrigation manipulations: Sap flow and water relations of avocado trees (Persea americana Mill.)

Authors: Nemera, D.B.; Bar-Tal, A.; Levy, G.; Lukyanov, V.; Tarchitzky, J.; Paudel. I.; Cohen, S.

Recent studies have shown significant negative effects of long-term irrigation with treated wastewater (TWW) on performance of orchards planted on clay soil. The aim of this study was to evaluate water use and water relations of different mitigation measures to remedy the declining performance of a mature commercial fruit-bearing 'Hass' avocado orchard (Persea americana Mill.) growing in a clay soil irrigated with TWW since 2009. The mitigation measures, each in 6 replicates, included freshwater

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2021 Israel

Mitigating negative effects of long-term treated wastewater irrigation: Leaf gas exchange and water use efficiency response of avocado trees (Persea americana Mill.)

Authors: Nemera, D.B.; Bar-Tal, A.; Levy, G.; Tarchitzky, J.; Rog, I.; Klein, T.; Cohen, S.

Declining performance of avocado orchards growing in a clayey soil irrigated with treated wastewater (TWW) for more than 5 years has been observed in Israel. Measures studied to mitigate this were freshwater (FW), blended TWW:FW in a 1:1 ratio (MIX), low-frequency TWW-irrigation (LFI), TWW irrigated tuff trenches (TUF) and TWW as the control treatment. This study reports on the response of avocado leaf gas exchange, intrinsic water use efficiency, leaf water potential and leaf hydraulic conductance

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2007 California

Salinity and water effects on 'Hass' avocado yields

Authors: Oster, J.; Stottlmyer, D.E.; Arpaia, M.L.

A field experiment was conducted between 1992 and 1997 in a commercial orchard of mature 'Hass' avocados on Mexican seedling rootstock (Persea antericana Mill.) to determine how yield was influenced by the amount of irrigation water applied and the frequency of application. Three amounts of water (targeted at 90%, 110%, and 130% of estimated crop evapotranspiration) were applied at three frequencies (one, twice, and seven times per week) with microsprinklers located beneath the tree canopy. The site

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