CIRAD imported this fruit tree into Réunion in 1993, as part of a plan to diversify agriculture in the humid highlands. To develop well in Réunion, the species has to be grown at heights of between 200 and 600 m above sea level, in which case it can produce up to 140 kg of fruit and may even double its yields after a devastating cyclone. The current production potential is estimated at around 15 tonnes a year.
Only two producers are currently growing Costa Rica guavas in Réunion, under the watchful eye of CIRAD, and until now, most of what they produce has been used by small-scale ice cream makers. However, the agrifood industry has also shown an interest in the past year or so. For instance, Glaces de Bourbon, a subsidiary of the CILAM (Compagnie laitière des Mascareignes) group, recently launched a new Costa Rica guava ice cream in supermarkets. The fruit has several good points: its distinctive flavour on the one hand, but above all its high vitamin C content (twelve times higher than oranges and three times higher than guavas).
The crop management sequence developed by CIRAD under a project aimed at diversifying agriculture in the highlands of Réunion limits the use of inputs and guarantees a "clean" crop. There had not previously been any technical references on this fruit, which was not grown commercially anywhere in the world: in its zone of origin, it was primarily grown in gardens and only occasionally in orchards.
If the product proves popular with consumers, it is likely to provide new outlets and enable the development of Costa Rica guava growing in the humid highlands. To satisfy future demand for the fruits, CIRAD is already storing plants, so as to plant new plots rapidly. These plots would serve both to provide new technical references and to supply the agrifood industry.
Helen Burford | alfa
Back to Nature: Palm oil plantations are being turned back into protected rainforest
21.03.2019 | Forschungsverbund Berlin e.V.
The inner struggle of the evening primrose: Chloroplasts are caught up in an evolutionary arms race
14.03.2019 | Max-Planck-Institut für Molekulare Pflanzenphysiologie
DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
The nonlinear process of high-order harmonic generation (HHG) in gases is one of the cornerstones of attosecond science (an attosecond is a billionth of a...
Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.
The magnetic properties of a material control how this material responds to the presence of a magnetic field. Iron oxide is the main component of rust but also...
Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.
Superficial micro-scratches on the car body or on other high-gloss surfaces are harmless, but annoying. Especially in the luxury segment such surfaces are...
The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
11.03.2019 | Event News
01.03.2019 | Event News
28.02.2019 | Event News
22.03.2019 | Life Sciences
22.03.2019 | Life Sciences
22.03.2019 | Information Technology