Across the ocean, more threats await. Incoming stocks can be held for two years to check for latent infections.
But as potato blight and countless other diseases have shown, pathogens have a way of catching up to their hosts. Unlike human diseases, plant pathogens are easy to handle and safe for people — and they can quickly destabilise nations by destroying staple crops or important exports.
There are disturbing precedents for this. But how did the fragile fungal spores make it through the careful cordon that protected the area? Some suspect foul play. The disease had appeared suddenly, in the heart of the plantations as opposed to their fringes.
There were claims that diseased branches were wired to trees. The goal was to destabilise the local government, which was supported by cocoa barons. If true, the incident marks the first documented account of disease-based agroterrorism. Whether through accident or malice, we cannot count on plant diseases staying where they are. Their expansion is a matter of when, not if. We need to start preparing countermeasures.
Education can help. Simple measures can help to control cocoa diseases, like planting trees more sparsely to improve air flow and reduce humidity, planting other crops to restrict the flow of pests, or removing blackened pods to stop ants from spreading spores to new trees.
Several programmes exist to train farmers in the use of these techniques. Other scientists are mining the cocoa genome for variants that are resistant to major pathogens. Still, resistant strains would only ever be a temporary solution.
As P infestans has shown, pathogens will always evolve around resistance, as surely as they skip through quarantines. Hughes thinks the answer lies in ecology.
Targeting a single cocoa pathogen is too reductionist — by studying all of them together, Hughes hopes to work out the weak link in their ensemble. If any of these techniques works, farmers could keep the ants away from cocoa and prevent them from ferrying Phytophthora spores into the trees. Non-farming ants, and there are many around, would soon replace them. Without bodyguards or tents, the mealybugs would be vulnerable to parasites and pesticides, meaning less of them would survive to pump the trees with CSSV.
Every time we have a silver bullet, evolution jumps back at us with a response. A s lunch was drawing to a close, Evans recounted the story of his greatest achievement — controlling rubber vine in Australia. Originally brought in to pretty up the coal mines with its pink flowers, this woody vine ran amok in Queensland. It exuded a poisonous latex, blocked animals from reaching waterways, and smothered eucalyptuses and other native plants.
Neither fire nor pesticides could control it — but Evans was able to. It was a rare success for Australia, a country known for its failed attempts at biological control. A different scientist might have milked a stream of high-profile publications from that kind of success, but Evans restricted himself to a few papers in backwater journals. He had more important things to do.
The brief was to control the spread of the invasive. Hughes toasted this do-first-publish-later approach, wishing more scientists shared it. Did you control it or not? You did? Oh, well done. When ash dieback disease hit British trees in , history repeated itself. In a recent audit, the British Society for Plant Pathology found that their subject is in free fall, relegated to a few lectures at a smattering of universities. Labs have halved in numbers, most scientists in the field are over 50, and new faces are rare.
The same is true across the pond. Hughes sees a deeper tragedy at play — the loss of a patient, contemplative approach to British natural history that allowed Charles Darwin and Alfred Russel Wallace to envision the theory of evolution by natural selection. As the old guard retires sans apprentices, we lose the knowledge in their heads and we cripple our intellectual immune system. When Phytophthora ramorum started killing oak trees in the western US in the mids, it took a long time before anyone knew what it was, giving the disease a chance to establish a foothold.
The knowledge that remains is hardly accessible. Hughes wants to democratise that hidden knowledge to give farmers a way of helping themselves. Earlier this year, the duo launched plantvillage.
Users vote the answers up and down, and accumulate points depending on how helpful they are. Many start-ups with world-changing ambitions have died on the vine, but five months in and the site is gently blooming. Admittedly, they are largely middle-class Americans and Europeans — a far cry from Ghanaian cocoa farmers. But Hughes is realistic. In his vision, people could snap photos of rotting leaves or blistering fruits, and receive diagnoses and tips from farmers and academics around the world.
This has already started happening. We might never be able to replace the natural historians of the past, but we might be able to mobilise the village to compensate for the loss of its elders. Individual ants are hardly great strategists, but through their interactions, they can achieve incredible feats of swarm intelligence.
Some successfully rear bugs, and build tents to defend them from threats. Others grow a delectable fungus by feeding it chopped up leaves, while killing off other moulds with antibiotic-secreting bacteria. For millions of years, ants have raised crops, herded livestock and weeded their gardens, all by working together as a large connected society.
Humans could learn a thing or two from that approach. Modern biomedicine sees the body as a closed mechanistic system. But illness shows us to be permeable, ecological beings. Coronavirus vaccine: Can a nasal vaccine act as Covaxin booster dose? Air pollution: As AQI level turns severe, here are groups most at risk from pollution complications. Refrain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks, name calling or inciting hatred against any community.
Help us delete comments that do not follow these guidelines by marking them offensive. Let's work together to keep the conversation civil. If you are fond of chocolates, coffee, pasta then you need to read this as we are going to share the most bizzarest thing ever!
Did you know your chocolate, coffee, macaronis may secretly contain bugs and insects. Yes, most of our favourite foods and drinks may secretly contain bug bits, and what will freak you out a little more is that it is absolutely legal. According to an insect control company-Terro based in Pennsylvania,USA; On an average we consume around 1,40, insect bits every year! There are many countries, where bugs and insect delicacies are a part of their culinary culture.
So much so that eating all kinds of insects are legal, and are relished as a staple! Well, the mere thought of eating insects would leave you muddled. But you would be amazed to know that the reason why these bug bits and insects are allowed in minimum quantities in most of our processed foods is because insects are rich in proteins, healthy fats, calcium, iron and are low in calories.
And a little addition of these are considered harmful for health. Although the addition of fly eggs, creepy crawling insect bits to as good as 70 fragments can be super disgusting and bizarre. And it is still believed to be legal and safe to consume! We often feel that we choose our food carefully, but then how our favourite processed foods are packed with insects and bug bits?
This happens because the production units are vast and most procedures involve mechanical processing and it is practically impossible to keep an eye on every unit of production. Despite adaptation of safety measures, some insects and bugs find their way to these foods.
Here are a few foods that are consumed every now and then, and they contain a good amount of insect bits. Chocolate is an universal favourite, but did you know your chocolate may secretly contain around 70 odd bug bits, Yes according to FDA guidelines, grams of chocolate may contain as good as bug fragments.
As per a study by Terro, cockroach bits are one of the most common incest bits found in chocolate. We bet you will think twice before taking that heavenly bite. If you thought your favourite cup of joe was safe enough to drink, then you would be shocked that even 10 percent insect-infested beans are allowed in your pack of coffee. In fact, you would be secretly drinking as good as bug bits in your favourite cup of coffee! Grabbing a dose of healthy juice will certainly give you that satisfaction of healthy indulgence, but how will you react if someone told you that a bottle of packaged juice may contain fly eggs?
While you might think that regulators ensure that your end product is bug-free, that might not always be the case. According to ABC News , your average chocolate bar, for instance, contains around 8 insect parts.
In a study by ant and insect control company Terro, this means that chocolate lovers could be eating almost 6, pieces of bugs in their diets every single year. Allergist Morton Teich at the Icahn School of Medicine at Mount Sinai said that instead, most people who experience hives, migraines, cramps or itching after consuming chocolate are probably triggered by cockroach parts and droppings on cocoa beans.
Consuming pesticide residue is not only more harmful to your health than bug parts, but is associated with a number of environmentally damaging impacts, including contaminating water and soil , as well as killing non-targeted plants and wildlife such as birds and fish.
Natural contaminants also appear in a number of common staple foods, such as pasta.
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