Accumulation of nutrients and growth in castor bean plants

Autores

  • Altino Junior Mendes de Oliveira Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Carlos Henrique de Oliveira Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Enilson de Barros Silva Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Evander Alves Ferreira Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Gustavo Antônio Mendes Pereira Universidade Federal de Viçosa
  • Daniel Valadão Silva Universidade Federal Rural do Semi-Árido

DOI:

https://doi.org/10.15361/1984-5529.2016v44n4p549-556

Resumo

Information about nutrient uptake and accumulation by different crops during development stages allows iden­tifying periods of higher demand and an adequate fertilization management. An experiment under field condi­tions was carried out in order to evaluate macro and micronutrient accumulation in castor bean leaf tissue, as well as to identify nutrient uptake critical stages of this crop. Treatments were consisted of evaluation periods with samples collected every ten days until 160 days after emergence of crop. Castor bean plants showed higher macronutrient accumulation in descending order: N > K > Ca > S > Mg > P and the following micronutri­ents Fe > Mn > Zn > B > Cu > Mo. The highest accumulation rates of N, P and K nutrients occur from 20 to 110 days after emergence (DAE) with the highest N uptake from 30 to 40 DAE, remaining high until approximately 110 DAE. Regarding potassium, the highest uptake occurs between 40 and 50 DAE, with high uptake rates until approximately 110 DAE. The highest phosphorus uptake was between 80 and 90 DAE. The majority of macro and micronutrients were accumulated in leaves during most part of evaluation cycle.

Biografia do Autor

Altino Junior Mendes de Oliveira, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Departamento de Agronomia

Carlos Henrique de Oliveira, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Departamento de Agronomia

Enilson de Barros Silva, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Departamento de Agronomia

Evander Alves Ferreira, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Departamento de Agronomia

Gustavo Antônio Mendes Pereira, Universidade Federal de Viçosa

Departamento de Fitotecnia

Daniel Valadão Silva, Universidade Federal Rural do Semi-Árido

Departamento de Agronomia

Publicado

11/11/2016

Edição

Seção

Fitotecnia - Crop Production