Category: Water management
Salinity and water effects on 'Hass' avocado yields
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
Use of alternative water sources in irrigation: potential scales, costs, and environmental impacts in California
Under the risk of drought, unreliable water supplies, and growing water demand, there is a growing need worldwide to explore alternative water sources to meet the demand for irrigation in agriculture and other outdoor activities. This paper estimates stocks, production capacities, economic costs, energy implications, and greenhouse gas (GHG) emissions associated with recycled water, desalinated brackish and seawater, and stormwater in California, the largest US state and the most significant fresh
Dealing with Water Scarcity and Salinity: Adoption of Water Efficient Technologies and Management Practices by California Avocado Growers
The irrigated agriculture sector has been facing an increased scarcity of good quality water worldwide. Consequently, the sustainability of water intensive crops, such as avocado, is threatened when water becomes scarce and expensive, or when growers must use saline water supplies that reduce crop yields. A variety of irrigation technologies and water management practices are now recommended to help growers through times of limited water supplies and elevated salinity levels. To examine how growers
Avocado Production Implications at Water Balance since a Geographic Information Systems (GIS) Perspective, 2011-2019
Worldwide 0.77% of available fresh water is accessible to humans (Harrison and Pearce, 2000), approximately 70% of it is used as input for agriculture (CONAGUA, 2018), which responds to the growing global demand for foods. In particular, the production of an avocado requires 227.1 liters of water (WFN, 2015). The growing world demand for this fruit has led to the exponential growth of the cultivated area in the last 15 years in Michoacan, the effects on the water balance are already significant.
The roles of fruit sink in the regulation of gas exchange and water uptake: A case study for avocado
The effects of drip irrigation frequency on ‘Hass’ avocado trees grown in lysimeters were examined. The experimental design comprised three irrigation frequencies: (a) pulsed irrigation (10–20 min every 30 min) throughout the day (Irg1); (b) one daily irrigation event beginning at night and terminated in the morning every day (Irg2); and (c) one irrigation event every two days (Irg3). Irrigation treatments induced significant differences in water availability in the root zone and in plant water
Response of ‘Hass’ avocado trees to irrigation management and root constraint
The performance of ‘Hass’ avocado trees grown in lysimeters under different irrigation regimes obtained by manipulating drip irrigation frequency and root volume was examined. The experimental design comprised six treatments (3×2) with three irrigation frequencies and two container volumes (100- and 200-L). The three irrigation frequencies were: pulsed irrigation (10–20min every 30min) throughout the day (Irg1), one daily irrigation event beginning at night and terminated in the morning every