23 Nov 2020
Citrus Exports

SA citrus exports to US up 50%, set to grow even further as local growers now have access to more ports

More South African citrus fruits will be heading to the US under a new agreement. Early this month, the US government announced the opening of several new ports for South African citrus fruits. The US department of agriculture’s Animal and Plant Health Inspection Service approved the use of additional ports for South African citrus on November 5. The US embassy said the facilitation of the trade between the two countries provided flexibility to American retailers and wholesalers, lowering transportation costs and broadening the reach of South African citrus to other regions.

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23 Nov 2020
Crop Manipulation

Crop manipulation uppermost on the minds of South African citrus growers

South Africa’s Limpopo and Mpumalanga citrus production regions enjoyed mild temperatures during an “almost ideal” fruit set this spring on all cultivars, including on seedless Valencias. Regions that have been receiving sub-average rainfall for years now, had substantial rain early last month. “Producers need to be cognisant of the potential negative impact of too high fruit set, of which a reduction in fruit size is the most problematic,” the South African citrus industry’s technical service Citrus Research International reminds growers.

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23 Nov 2020
Climate Change

Potential climate change impacts on citrus water requirement across major producing areas in the world.

Understanding how potential climate change will affect availability of water resources for citrus production globally is needed. The main goal of this study is to investigate impacts of potential future climate change on citrus irrigation requirements (IRR) in major global citrus producing regions, e.g., Africa, Asia, Australia, Mediterranean, Americas. The Irrigation Management System (IManSys) model was used to calculate optimum IRR for the baseline period (1986–2005) and two future periods (2055s and 2090s) subject to combination of five and seven temperature and precipitation levels, respectively. Predicted IRR show significant spatio-temporal variations across study regions. Future annual IRR are predicted to globally decrease; however, future monthly IRR showed mixed results.

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23 Sep 2020
CYVC symptoms on young lemon leaves

Two new citrus virus diseases found in Turkey

“Two serious viral diseases are affecting Turkey’s citrus cultivation and threatening all the Mediterranean countries”. This was reported by Antonino Catara, former president of the International Organisation of Citrus Virologists.

“One of the two diseases – continued the scientist – is the Citrus Chlorotic Dwarf CCD, which mainly affects lemon and grapefruit plants, but also marginally mandarin and clementine plants. The viral infection has a significant impact on the yield and quality of the fruit, as well as on the crown’s vegetative development, due to the short internodes”.

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23 Sep 2020
Citrus

Citrus industry negotiates a new trade deal

Cape Town – After eleven years of negotiations, South Africa’s citrus industry has been given the go-ahead to export to the Philippines, with the signing of a work plan between the Department of Agriculture, Land Reform and Rural Development, and the Philippines Bureau of Plant and Industry.

Agriculture Minister Thoko Didiza made the announcement yesterday as the South African citrus industry estimates that close to 500 000 tons of additional citrus would be available for export by 2024.

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23 Sep 2020
Coldling Moth

South Africa takes proactive FCM measures with its EU citrus exports

For the first time since 2018 when the South African citrus industry introduced its False Codling Moth Management System, the citrus industry has had to intervene in its normal functioning to manage false codling moth.

The decision to strengthen the shipping protocol for South Africa’s oranges for the rest of the season, on very short notice, is made possible by the agility of its systems approach, says Deon Joubert, Citrus Growers’ Association envoy to the EU. The system’s requirements for continuous, thorough orchard and fruit monitoring had made it clear to the industry that there was a lot of false codling moth activity this year.

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26 Aug 2020
Organic blood oranges from Agrofair in Italy

There is room for growth on the organic citrus market

The organic citrus market is in full swing. Besides the superpower in this market, Spain, importers are now finding their way only too well to countries such as Greece, Italy, and South Africa.

“We specifically chose Italy for the import of our organic citrus,” says Martin Pietersma from Agrofair. This company, based in Barendrecht, the Netherlands, imports, among other products, organic blood oranges from Sicily. “There are, naturally, other countries besides Italy where this product is available, such as Greece and, of course, Spain.”

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29 Jun 2020
Cover Crops

Can cover crops save Florida’s citrus?

Citrus greening has devastated the Sunshine State’s orange industry. Researchers and pioneering farmers see cover crops as a road to recovery.

For the last couple of decades, a tiny insect called the Asian citrus psyllid has fed on the stems and leaves of the orange trees in Florida, infecting them with bacteria that cause a lethal disease called citrus greening. The bacterial disease, huanglongbing (HLB), originated in China and has destroyed 90 percent of the state’s groves, devastating its $9 billion citrus industry.

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26 May 2020
Distribution of Liberibacter

HLB now in Kenya: Preparations to mitigate its impact on the Southern African citrus industry.

The presence of Diaphorina citri (Asian citrus psyllid, or ACP), the primary vector of the dreaded Huanglongbing disease (HLB, or Asian Citrus Greening), was first reported in east Africa in Tanzania (2015) and Kenya (2016). Surveys that CRI conducted in collaboration with local scientists, confirmed the presence of ACP in the eastern regions of Tanzania. Recently HLB, previously known to occur in some parts of Ethiopia, was detected on the east coast of Kenya (Fig. 1). The recent detection of HLB in Kenya brings it considerably closer to citrus production in Southern Africa. CRI has engaged in a process with Department of Agriculture, Land Reform and Rural Development (DALRRD) to encourage Kenyan partners to scope the possibility of containing and eradicating the disease in the region.

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