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01 Dec 2017
Aeroview
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Boer nou presies en winsgewend

Johan van der Merwe
Landbouweekblad Agri Megaweek Promosie

As presisieboerdery vir jou ’n mikpunt is, is Aeroview ’n uitstekende hulpmiddel in jou boerdery.

Aerobotics, ’n tegnologiemaatskappy van Kaapstad, se digitale platform is nou bekostigbaarder en gebruikersvriendeliker as ooit. Die maatskappy is al meer as drie jaar lank gemoeid om dataverwerking vir die landbou bruikbaar te maak.

Mnr. Hein Gerber, sitrusboer van die First Fruit Farms by Simondium naby die Paarl, sê Aeroview, Aerobotics se dataverwerkingsplatform, is die gebruikersvriendelikste platform wat hy nog teëgekom het.

“Vir die boer wat bereid is om moeite te doen en ’n behoefte het om in meer detail presisieboerderypraktyke toe pas, sal hierdie platform gewis van waarde wees.

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18 Feb 2016
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New clementine, satsuma and orange varieties. Growing interest in early and late easy-peeling citrus fruits

www.freshplaza.com

According to David Alba, director of Citrus Genesis, a specialist in integrated development and management of new protected plant varieties, when it comes to citrus fruits, mandarins and clementines are the most common in terms of protected varieties, given current consumer trends, which favour easy-peelers, intense flavour profiles and lack of seeds.

Click here to read the full article.

17 Feb 2016
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Europe picks up more RSA citrus

Fred Meintjies
www.fruitnet.com

Despite the ongoing focus on citrus black spot, South Africa’s citrus volumes to Europe actually increased significantly in 2015.

The South African citrus industry has been at great pains all season to point out how difficult and expensive it has become for them to trade in Western Europe, due to the measures relating to citrus black spot (CBS) disease they have to contend with.

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16 Feb 2016
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The Reproductive Phenology of Citrus III: Morphogenesis from Flower to Fruit

Jakkie (OPJ) Stander
Citrus Research International | University of Stellenbosch
E-mail: jakkie@sun.ac.za

Flowers are a critical determinate of eventual yield of perennial fruit trees. In the first two articles in this series of three covering the reproductive phenology of citrus, the focus was on elaborating the importance of flowers and the factors determining the prevalence thereof.

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16 Feb 2016
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The Reproductive Phenology of Citrus. II: Citrus floral ontogeny

Jakkie (OPJ) Stander
Citrus Research International | Department of Horticultural Science, University of Stellenbosch
E-mail: jakkie@sun.ac.za

Citrus trees are perennial evergreens, which sustain a complex tree structure with one to three distinct annual vegetative growth flushes. After a sufficient induction period, with the onset of growth-promoting conditions during spring (increase in temperatures and sufficient water and mineral nutrient supply), flowers develop from buds on vegetative shoots that originated from vegetative shoots in the different growth flushes of the previous 12-month season.

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16 Feb 2016
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The Reproductive Phenology of Citrus. I: Introduction to the physiology of citrus flowering

Jakkie (OPJ) Stander
Citrus Research International | Department of Horticultural Science, University of Stellenbosch
E-mail: jakkie@sun.ac.za

Flowers are a critical determinate of eventual yield of perennial fruit trees. Therefore, an understanding of the underlying mechanisms and influencing factors, as well as the general phenology of flower development in citrus, is critically important to the sustainability of successful commercial citrus production.

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15 Feb 2016
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Could Ethylene Metabolism in Lemon Fruit Influence Peteca Incidence?

Paul J.R. Cronjé
Citrus Research International | Department of Horticultural Science, Stellenbosch University
E-mail: paulcronje@sun.ac.za

Peteca of lemon is a postharvest physiological disorder resulting in the collapse of the oil glands. Subsequently, the oil leaks into the adjacent tissue and
causes a darkened depression. The occurrence can be severe, without any specific pre- or postharvest practises to employ to reduce the incidence.

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15 Feb 2016
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Fruit Splitting in Citrus

Paul J. R. Cronje
Citrus Research International | Department of Horticultural Science, Stellenbosch University

Ockert P. J. Stander and Karen I. Theron
Department of Horticultural Science, Stellenbosch University

Various citrus cultivars of ‘Navel’ and ‘Valencia’ orange [Citrus sinensis (L.) Osbeck], as well as mandarin and mandarin hybrids (Citrus reticulata Blanco) are prone to a preharvest physiological rind disorder, known as fruit splitting.

Similar disorders occur as fruit cracking and/or splitting in other commercially important horticultural crops, most notably in apple, apricot, cherry, grape, nectarine, prune, and tomato. Fruit splitting in citrus differs from other crops due to the unique morphology of a citrus fruit, consisting of the pulp and rind, which is made up of the spongy white internal layer, the albedo (mesocarp), and the external layer, the flavedo (exocarp).

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