I have been putting a lot of fertilizers in my tomato plant, specially nitrogen. I used to put around 5 small balls of urea per 1,5L, and water 750mL per day. Also, I have placed a good amount of ash in the soil before planting it. For some time, I have noticed very fast growth, but also that the leaves are starting to get deformed and twist downward, like a typical nitrogen excess. The problem is, the lower leaves are getting yellowish, except the stem, which I assumed to be a magnesium deficiency. My idea is to dissolve wood ash in nitric acid and apply the diluted nitrate solution, as a way to supply other nutrients (without raising the pH) to try and balance the amount being sucked up right now by the rapid growth. Is it a good idea?

by bolor-matinal

2 Comments

  1. bolor-matinal

    I have read that ammonium, being a cation, can disrupt other nutrient uptakes, such as calcium, magnesium and potassium, and knowing that urea hydrolyses in the soil to ammonium, maybe switching directly to nitrates as a source of nitrogen will have better effects on the plant, while also giving a lot of other nutrients

  2. bolor-matinal

    It’s been like <25 days since I planted it and it’s already huge! Also, there are new flowers coming up, so I’m not really worried about the plant favoring leaves over fruit

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