{"product_id":"kopero-elektrocultuur","title":"Kopero Electroculture","description":"\u003cp\u003eFour copper antennas with a coil on top, which you push upright into the soil beside the plants you have in mind. Nothing else is involved: no power, no batteries, no maintenance. Where the idea comes from and what has been studied about it is in \u003ca href=\"\/blogs\/knowledge-base\/electroculture-a-centuries-old-gardening-tradition-rediscovered\"\u003ethe article on electroculture\u003c\/a\u003e. The history in the Netherlands itself, from a garden attraction in Andijk to a Philips trial in the Beemster, is in \u003ca href=\"\/blogs\/knowledge-base\/electroculture-in-the-netherlands-from-andijk-to-today\"\u003eelectroculture in the Netherlands\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eYou choose between 30 and 60 centimetres. The short size suits pots, houseplants and low planting; the long one reaches further into a border or vegetable garden and still stands above taller crops. Four to a set, so you can spread them across a bed or a group of pots. How far apart and how deep is in \u003ca href=\"\/blogs\/knowledge-base\/placing-electroculture-antennas\"\u003eplacing the antennas\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThe whole antenna is solid copper, the stake included. That is the difference with versions where only the coil is copper and the stake is wood: wood can rot in the ground, and there is less conductive surface in the soil. Which copper we use is in \u003ca href=\"\/blogs\/knowledge-base\/what-our-copper-products-are-made-of\"\u003ewhat our copper products are made of\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThat it is copper in particular has the same reason an earth rod is copper: of all metals only silver conducts better, and copper keeps doing so in wet ground for years. The international unit of electrical conductivity is even defined on it. What sits behind that physically is in \u003ca href=\"\/blogs\/knowledge-base\/why-copper-conducts\"\u003ewhy copper conducts\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThat comparison with the earth rod is not a metaphor. The European lightning protection standard EN-IEC 62305 lists copper as a conductor and as an earth electrode, and what an electrician calls earthing is literally a copper connection to the soil. More on that is in \u003ca href=\"\/blogs\/knowledge-base\/copper-shielding-and-earthing\"\u003ecopper as a shield\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eHow to get the most out of your copper\u003c\/h3\u003e\u003cp\u003ePush on the stake when you put the antenna into the ground, not on the coil. It bends easily and should stay round, clear of leaves and mesh. Keep your distance from the roots of the plant itself.\u003c\/p\u003e\u003cp\u003eOutdoors copper discolours faster than indoors: rain and soil do their work, and the antennas turn darker and eventually green. That is normal and says nothing about how they work. \u003ca href=\"\/blogs\/knowledge-base\/why-is-my-copper-turning-green-or-black-and-is-that-a-problem\"\u003eWhy is my copper turning green or black\u003c\/a\u003e explains when discolouration does mean something.\u003c\/p\u003e\u003cp\u003eMore has been measured than you would expect. Between 1918 and 1936 the British Ministry of Agriculture reported yield increases of 30 to 50%, in China a programme runs across more than 3,600 hectares of greenhouses with yields 20 to 30% higher, and in 2022 Nature Food published peas that germinated 26.3% faster. We promise no harvest, because that depends on your soil, your crop and your season. Every measurement is laid out in the article above. Measurements were also taken extensively in the Soviet Union, all the way to a greenhouse aboard a space station: \u003ca href=\"\/blogs\/knowledge-base\/electroculture-in-the-soviet-union-and-into-space\"\u003eelectroculture in the Soviet Union and into space\u003c\/a\u003e. And what insects have to do with electric fields, you can read in \u003ca href=\"\/blogs\/knowledge-base\/can-insects-sense-electricity\"\u003ecan insects sense electricity\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kopero","offers":[{"title":"30 cm","offer_id":54697656648021,"sku":"8720726791540","price":39.95,"currency_code":"EUR","in_stock":true},{"title":"60 cm","offer_id":54697656680789,"sku":"8720726791557","price":59.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/7259\/4005\/files\/kopero-elektrocultuur-30-cm-1.jpg?v=1791102152","url":"https:\/\/kopero.com\/products\/kopero-electroculture","provider":"Kopero","version":"1.0","type":"link"}