Impact of Cover Crops and Nitrogen on Cotton Fiber Cellulose and Quality Traits

Autor(es)

Aguiar Silva, Gustavo Ricardo ; Rocha, Caroline Honorato ; Echer, Fabio Rafael

• Tipo de documento: Artigo Científico
• Fonte: Communications in Soil Science and Plant Analysis; v. N/A, p. 14-pg., 2022-10-21.

Resumo

Fiber quality varies depending on the fruit position of the cotton plant. Nitrogen (N) availability can alter fruiting dynamics and, consequently, fiber quality. The current study evaluated the effect of cover crops and N availability on cellulose content and fiber quality in different plant positions. The experiment was carried out in Presidente Bernardes, Sao Paulo, Brazil. Experiment design was a split-plot in completely randomized block design with five replicates. Cover crops were allocated: Fallow (F), Velvet bean (VB), Ruzigrass (Urochloa ruziziensis) (R), Inoculated ruzigrass (IR) (Azospirillum), Ruzigrass + velvet bean (R+VB) and Inoculated ruzigrass + velvet bean (IR+VB); and N rates (80 and 120 kg ha(-1)) in the sub-plots. Cellulose content in the lower, middle, and upper third of the plants were evaluated at 15 and 30 days after anthesis (DAA) and at harvest. At 15 and 30 DAA, the cellulose content was higher in the lower third in most treatments, except in the treatment with ruzigrass (120 N), which was higher in the upper third. Fibers with higher quality and final cellulose content are in the lower parts of the plant, and IR+VB improved fiber quality by providing applications with lower rates of N. (AU)

• Processo FAPESP: 19/19957-0 - Efeito das plantas de cobertura e das doses de N sobre a atividade da sacarose sintase (SuSy), teor de celulose e qualidade das fibras de algodão
• Beneficiário: Gustavo Ricardo Aguiar Silva
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica