ResearchSpace
→
Browsing by Author

Browsing by Author "Annandale, JG"

Now showing items 1-6 of 6

Are sap flow measurements useful for determining water use of fruit orchards, when absolute values are important?

Author: Taylor, NJ ; Ibraimo, NA ; Annandale, JG ; Everson, CS ; Vahrmeijer, JT ; Gush, Mark B Date: Jun 2013 The determination of accurate figures for orchard water use is critical for improved irrigation scheduling and for the issuing of water licenses. Under- or over estimations can have serious implications for production and water resources in ... Read more
Are simple empirical crop coefficient approaches for determining pecan water use readily transferrable across a wide range of conditions?

Author: Taylor, NJ ; Annandale, JG ; Ibraimo, NA ; Steyn, JM ; Gush, Mark B Date: Feb 2017 planning. However, it is impossible to measure ET under all possible combinations of climate and management practices, which necessitates the use of ET models. Although empirical models are more likely to be adopted by consultants and growers, ... Read more
Citrus water use in South Africa

Author: Vahrmeijer, JT ; Annandale, JG ; Gush, Mark B ; Taylor, NJ Date: Sep 2012 Agriculture, as the largest user of fresh water worldwide, is under close scrutiny to justify its use of water due to the increase in competition from a number of end-users. Apart from on-farm measures to increase water use efficiency, ... Read more
Crop coefficient approaches based on fixed estimates of leaf resistance are not appropriate for estimating water use of citrus

Author: Taylor, NJ ; Mahohoma, W ; Vahrmeijer, JT ; Gush, Mark B ; Allen, RG ; Annandale, JG Date: 01 Mar 2015 The estimation of crop water use is critical for accurate irrigation scheduling and water licenses. However, the direct measurement of crop water use is too expensive and time-consuming to be performed under all possible conditions, which ... Read more
Estimating water use of mature pecan orchards: A six stage crop growth curve approach

Author: Ibraimo, NA ; Taylor, NJ ; Steyn, JM ; Gush, Mark B ; Annandale, JG Date: Nov 2016 Mature pecans use large quantities of water and therefore the accurate estimation of water use or evapotranspiration (ET) of pecan orchards is critical for judicious irrigation water management and planning. Measuring ET under all possible ... Read more
Understanding the dynamics of citrus water use

Author: Taylor, NJ ; Annandale, JG ; Vahrmeijer, JT ; Gush, Mark B Date: Dec 2012 The quantification of water use of citrus orchards is important in order to prevent stress developing in the orchard and to avoid wasting precious water resources. Measurement of citrus orchard water use is not possible under all environ-mental ... Read more

Now showing items 1-6 of 6

Browse

All of ResearchSpace

Quick Links

Legislation and compliance

General Enquiries

Tel: + 27 12 841 2911
Email: callcentre@csir.co.za

Physical Address
Meiring Naudé Road
Brummeria
Pretoria
South Africa

Postal Address
PO Box 395
Pretoria 0001
South Africa

Social Connect

Resources on this site are free to download and reuse according to associated licensing provision. Please read the terms and conditions of usage of each resource.

Browsing by Author "Annandale, JG"

Browsing by Author "Annandale, JG"

Browse

All of ResearchSpace

Quick Links

Legislation and compliance

General Enquiries

Social Connect