tree density News
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Selective breeding could save trees from drought
Trees with high wood density tend to survive better under drought conditions. In a new study on Douglas-fir tree populations, research suggests that the trees could be selectively bred for high density wood to increase resistance to drought. With predictions that the frequency of droughts could increase over the coming century, such strategies to protect tree populations could aid climate change ...
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Careful urban tree planting and pruning needed to reduce trapping of air pollution
Careful planting and pruning is needed to ensure that air pollution in tree-lined streets is minimised, new research suggests. While planting trees in urban areas can have many benefits, such as enhancing biodiversity, trees can trap particulate matter pollution, say the study’s authors. Particulate matter (PM) air pollution is a component of vehicle exhaust emissions and PM2.5 (particles ...
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Growth-oriented logging: a new concept in forest management
Deforestation in the tropics has both local and global effects, but conservation remains a major challenge. New research describes a method for measuring tree growth and timber harvesting, which can lead to sustainable management of tropical timber resources. The method tailors cutting cycles according to accurate growth rates of different tree species. Research explored the Mamirauá Sustainable ...
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Controlled forest fires could kill invasive tree disease
In a new study, researchers examined the potential influence of human-driven changes in land-use on disease establishment in forests. The research suggests that changes in forest management, which encourage greater and more dense forest cover, are creating environmental conditions that promote disease. The invasive, fungal-like Phytophthora ramorum causes Sudden Oak Death (SOD), which is ...
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Olive growing in Saudi Arabia
A delegation of representatives of the Saudi olive growing sector was received on 7 October by various officials of the IOC Executive Secretariat, including the Executive Director, the Deputy Directors, the Head of the Department of Research & Development and Environment and the Head of the Promotion Unit. Mr Aboabat, the CEO of the company Al-Watania and Mr Sahbi Mahjoub from the ...
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New crop sprayer is kinder on the environment
An EU project has developed a new crop spray system for orchards that is precise, efficient and safer for the environment. It sprays pesticides according to the needs of the crop and local environment, and can reduce spray drift by up to 80 per cent. Preliminary field tests conducted in Poland have demonstrated its effectiveness. The EU has adopted a framework directive on the sustainable use of ...
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New training, ultra-high-density planting systems recommended for sweet cherry
As a result of new dwarfing rootstock selections, improvements in crop protectants, and better methods of postharvest handling and storage, production of sweet cherry is increasing around the world. New sweet cherry cultivars that allow for improved mechanical harvest have also been introduced, and semi-dwarfing and dwarfing rootstocks have improved the potential for developing high-density ...
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