Nutrient Omission in Corn Plant Development Cultivated in Nutrient Solution
Palavras-chave:
fertilization, plant nutrition, Zea Mays L.Resumo
Macronutrients are essential for plants, and their deficiency results in decreased productivity, hindering the plant from completing its life cycle. The aim of this study was to evaluate the effect and symptomatology of macronutrient omission in maize (Zea mays L.) cultivation. The experiment was conducted in a greenhouse, with the following treatments: T1: no macronutrients; T2: complete except for Nitrogen; T3: complete except for Phosphorus; T4: complete except for Potassium; T5: complete except for Calcium; T6: complete except for Magnesium; T7: complete except for Sulfur; and T8: all nutrients included. Micronutrients were added to the treatments, irrigated with 60% water retention capacity. A Completely Randomized Design was applied, with 5 repetitions per treatment. After 80 days, the analyzed variables were: plant height, number of leaves, stem diameter, fresh mass weight, and dry mass of above-ground and root parts. Analysis of variance was performed, and means were compared using the T-test for multiple comparisons (LSD) at a 5% probability level. Treatments with omission of N, P, and S were the most affected in all evaluated variables. On the other hand, the absence of Ca, K, and Mg nutrients had little impact on plant development.
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