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Orchard Water Use App

With memories of the recent debilitating droughts still fresh in the minds of many in the major fruit producing regions in South Africa, there is a need to radically improve how water is managed to make every drop count

With memories of the recent debilitating droughts still fresh in the minds of many in the major fruit producing regions in South Africa, there is a need to radically improve how water is managed to make every drop count

Orchard Water Use App

by Munyaradzi Mandava
Orchard Water Use App
Orchard Water Use App
Orchard Water Use App

What is it about?

With memories of the recent debilitating droughts still fresh in the minds of many in the major fruit producing regions in South Africa, there is a need to radically improve how water is managed to make every drop count. The number of tools available to farmers to optimize their irrigation is growing mostly by harnessing modern technologies. So, this CSIR Orchard Water Use Application (APP) adds to the existing products.

Orchard Water Use App

App Details

Version
1.0
Rating
NA
Size
81Mb
Genre
Utilities Productivity
Last updated
August 16, 2020
Release date
August 16, 2020
More info

App Screenshots

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App Store Description

With memories of the recent debilitating droughts still fresh in the minds of many in the major fruit producing regions in South Africa, there is a need to radically improve how water is managed to make every drop count. The number of tools available to farmers to optimize their irrigation is growing mostly by harnessing modern technologies. So, this CSIR Orchard Water Use Application (APP) adds to the existing products.

Over the years, researchers from the Council for Scientific and Industrial Research (CSIR) in collaboration with fruit industry partners have conducted research aimed at measuring the actual water use of orchards using state-of-the-art techniques. This APP is a culmination of those efforts as it pulls these data together to develop a tool that is both accurate and simple. Currently the APP is designed to forecast the water requirements in apple orchards only. Other crops will be added in future.

The APP follows the internationally acclaimed FAO 56 principles to predict the orchard water requirements 1 to 7 days in advance. Reference evapotranspiration (ETo) for the orchard’s location is calculated using data from reliable online weather forecasts. The weather forecast data is pulled into the APP when the user enters the site coordinates. An experimentally validated algorithm runs in the background to derive the orchard crop factors using readily available information e.g. the tree canopy fractional cover (0-1), tree height, soil type, cover crop status (i.e. whether tall and dense, average, or bare) and the irrigation system. In this way, appropriate crop factors are derived for each orchard thereby avoiding the problem of over-irrigation especially in younger orchards whose crop factors are not well known.

The outputs from the APP include the daily orchard transpiration and evapotranspiration including the reference evaporation (in mm/d). These data are displayed in either graphical or tabular forms. A weekly summary of each water use variable is also provided. Weekly crop factors are provided.

This free version of the APP has been validated with actual sap flow measurements of transpiration and eddy covariance measurements in more than 12 apple orchards in different production regions in the Western Cape. However, we would appreciate feedback on your experiences with the APP and how the tool can be improved to make it more relevant to your operations.

DISCLAIMER
Neither the CSIR, its employees or the developers of this application take responsibility for any losses arising from use of this product. User discretion is advised.

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