25 Jan 2019
Citrus Black Spot

EU digs in heels and remains aggressively protectionist on CBS


Despite one of the best seasons on record in terms of mitigating the risk of Citrus Black Spot (CBS) symptoms on fruit arriving at EU borders, the EU seems determined to meet South Africa’s best efforts with unflinching bureaucratic coldness.

At a meeting in Brussels on 27 November between the EU’s Directorate-General for Health and Food Safety (DG Sante), the Department of Agriculture, Forestry and Fisheries (DAFF) and a delegation of SA citrus producers, the EU begrudgingly acknowledged this year as a good season.


25 Jan 2019
Orri Jaffa

Easy-Peeler Orri Jaffa expected to see 70% sales growth in North American markets


The Plant Production and Marketing Board of Israel predicts that 2019 will see significant increase in exports of the Orri Jaffa mandarin to the US and Canada. The organization set goals for expanding export of its leading, easy-to-peel mandarin in response to the increased demand for high-quality, easy-peelers.

The Jaffa Orri is a mandarin developed by scientists at the Israeli Volcani Research Center. This easy-to-peel mandarin retains an excellent, fresh, sweet flavor with a fleshy texture, and mouthful juiciness, while bearing virtually no seeds. It also carries a particularly long shelf life and appears later in the season compared to other easy peelers – from January into May.


25 Jan 2019

Plant nutrition status, yield and quality of satsuma mandarin (Citrus unshiu Marc.) under soil application of Fe-EDDHA and combination with zinc and manganese in calcareous soil

Ying Zhang, Cheng-Xiao Hu∗, Qi-Ling Tan, Cang-Song Zheng, Hui-Ping Gui, Wei-Nan Zeng, Xue-Cheng Sun, Xiao-Hu Zhao
College of Resources and Environment/Micro-element Research Center, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China

The purpose of this study was to investigate citrus tissue’s response to varying applications of Fe-EDDHA, zinc (Zn) and manganese (Mn) combinations and the resulting effects on citrus fruit yield and quality in calcareous soil. A field experiment was conducted for three years with satsuma mandarin trees planted in calcareous soil. Four treatments were conducted: (i) control; (ii) soil Fe application; (iii) soil Fe + Zn application; and (iv) soil Fe + Zn + Mn application. Soil available Fe and Zn concentrations were raised through the application of Fe-EDDHA and Zn, whereas the soil available Mn concentration was not increased through the application of Mn. Applying Fe-EDDHA raised the leaf active Fe content significantly without influencing the leaf and fruit Fe concentrations. The Zn concentrations in leaf and fruit decreased when Fe-EDDHA was applied exclusively, but increased when Fe + Zn and Fe + Zn + Mn were applied in the third year. There was no significant difference in leaf and fruit Mn concentrations among all treatments between 2010 and 2012.