Botany Quiz: which nutrient makes a plant green?

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admin (Zone 7a) Aug 20, 2018
There are a total of 24 votes:

nitrogen
(17 votes, 70%)		Red dot

phosphorus
(3 votes, 12%)		Red dot

potash
(1 votes, 4%)		Red dot

calcium
(0 votes, 0%)		Red dot

magnesium
(3 votes, 12%)		Red dot

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