- UPSpace Home
- →
- Natural and Agricultural Sciences
- →
- Browsing Natural and Agricultural Sciences by Supervisor
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing Natural and Agricultural Sciences by Supervisor "Vahrmeijer, J.T."
Now showing items 1-6 of 6
-
(University of Pretoria, 2016)The aim of this study was to calibrate and decide on the most appropriate sap flow technique for citrus species in the laboratory by pushing water through cut branches. Various sap flux density techniques, including heat ...
-
(University of Pretoria, 2017)A substantial number of South African citrus trees are rooted on rough lemon rootstocks. In order to ensure the successful establishment of a high percentage of young citrus trees, it is necessary to ensure that farmers ...
-
Nitrogen, phosphorus and potassium availability as influenced by humate and fulvate soil amendment (University of Pretoria, 2014)Citrus fruit in South Africa is produced mainly for the export market where it competes with other countries such as Spain, Turkey, USA and Egypt. South Africa is the third largest exporter of citrus after Spain and Turkey. ...
-
(University of Pretoria, 2016)It is a common practice to use large quantities of reduced nitrogen (N) such as urea, ammonia (NH3) and ammonium (NH4+) as pre-plant (before planting) fertilisers in the Free State, Mpumalanga and North West where farmers ...
-
(University of Pretoria, 2016)Perennial fruit crops like citrus can benefit from foliar nutrition since deep roots can deplete the soil and soil amendments other than fertigation are not easily applied without damaging roots. Increases in production ...
-
(University of Pretoria, 2017)Sap flux density (SFD) measurements methods have been widely used in woody plants to accurately quantify tree water use (transpiration). Two different methods viz., heat ratio method (HR) and the compensation heat pulse ...
Now showing items 1-6 of 6