Determination of optimal fertilizer norms under tomato vegetation related to vegetable growing is a very important issue. For this purpose, the influence of various norms of nitrogen on the background of organic fertilizers on the background of the biometric data of the "Preliminary" tomato varieties, the total nitrogen, phosphorus and potassium content of tomato bushes have been studied. Also, the biochemical indicators of tomatoes were studied. It has been shown that no fertilization of the fertilizers in the fertilizer (10 t/ha)+N90P90K90 was observed in the fertilizer, but the tomato fruit weight and diameter increased, and the nitrates contained in it did not exceed the norm.
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