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Cotton (Sinop, MT- Brazil)

Research institution: NEMABIO, Agronomic Research
Researcher: Dr. Claudinei Kappes)
Date: 2023
Location: Sinop, MT - Brazil
Crop variety: TMG 44 B2RF – 11 seeds/meter
Soil: Dystrophic Red-Yellow Latosol (Oxisol) consisting of clay (49.8%), sand (32.5%) and silt: 17.7%
Soil pH: 5.7 (CaCl₂)
Additional soil information: OM 24.3 g/dm³; P 28.9 mg/dm³; K 91.6 mg/dm³ S 25 mg/dm³; Ca 4.1 cmol_c/dm³; Mg 1.6 cmol_c/dm³; B 0.23 mg/dm³; Cu 0.5 mg/dm³; Mn 0.5 mg/dm³; Zn 3.4 mg/dm³; Fe 60 mg/dm³
Fertilizer: Granubor^® and acidulated ulexite
Trial design: Randomized complete block with four repetitions
Metrics: Yield (kg/ha), B content in the leaves, and B content in the soil (after harvest). Plant stand evaluation to ensure consistent stand in each replication

The application of 3.0 kg/ha of boron broadcast at the time of sowing in soil with low availability of the element, provided a higher yield of seed cotton, whose percentage increase was 5.28% in comparison to the control treatment (increase of 267.9 kg/ha).
Applications of increasing doses of boron linearly increased the content of the element in the leaf and soil, the lowest values were verified in the control, which did not receive an application of boron.

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