Skip to main content
padlock icon - secure page this page is secure

Open Access Desenvolvimento de mudas de citros cultivadas em vaso em resposta à adubação NPK Development of citrus nursery trees grown in pots in response to NPK fertilization

Download Article:

The full text article is available externally.

The article you have requested is supplied via the DOAJ. View from original source.

O objetivo deste trabalho foi avaliar o efeito da adubação NPK sobre o desenvolvimento de mudas de laranjeira 'Valência' (Citrus sinensis) sobre o porta-enxerto de limoeiro 'Cravo' (C. limonia) em vasos com substrato de casca de Pinus, vermiculita e perlita. Utilizou-se um esquema de fatorial fracionário (1/5)5³ com um delineamento em blocos ao acaso. Os tratamentos consistiram em 5 doses (em g por planta) de N&58; 1,25&59; 6,25&59; 11,25&59; 16,25&59; 21,25&59; 5 doses de K&58; 0,42&59; 3,75&59; 6,22&59; 9,34&59; 12,45&59; e 5 doses de P&58; 0,19&59; 0,89&59; 1,59&59; 2,29&59; 2,99. O N e o K foram fornecidos semanalmente, sendo 37,5% da dose para o porta-enxerto. O P foi fornecido totalmente no plantio. Avaliaram-se a produção de material seco das folhas, raízes, caule, parte aérea e total&59; área foliar, relação raízes/parte aérea&59; altura de plantas&59; volume radicular, relação área foliar/material seco para os porta-enxertos e as mudas, e o diâmetro do caule para os porta-enxertos. Funções de resposta foram ajustadas e os níveis de nutrientes foram calculados. Os resultados mostraram que as doses de fertilizantes que levaram às melhores respostas para produção de mudas de laranjeira 'Valência'/'Cravo' sobre o porta-enxertos de limoeiro 'Cravo' foram&58; N, 9,85&59; P, 2,86&59; K, 7,99 g por plantas.&60;br&62;The objective of this research was to evaluate the NPK fertilizer effect on 'Valencia' sweet orange nursery tree (Citrus sinensis) development, budded on Rangpur lime rootstocks (C. limonia) in a protected environment using containers with Pinus bark, vermiculite and perlite substrates. The experiment consisted of a complete (1/5) 5³ factorial randomized block design. Treatments comprised five concentrations in g per plant of N&58; 1.25&59; 6.25&59; 11.25&59; 16.25&59; 21.25&59; five concnetrations of K&58; 0.42&59; 3.75&59; 6.22&59; 9.34&59; 12.45&59; and five concentration of P&58; 0.19&59; 0.89&59; 1.59&59; 2.29&59; 2.99. Nitrogen and K were applieded weekly, and 37.5% of the total fertilization was applied to rootstocks. All P was supplied at planting. Leaf, root, stem, shoot and total dry matter production, shoot/root ratio, leaf area, plant height, root system volume&59; leaf area dry matter ratio stem diameter were evaluated. Response functions were adjusted and nutrient rates for maximum yield are presented. Results showed that fertilizer level that lead to the best 'Valencia' sweet orange on Rangpur lime nursery tree response was (g per plant)&58; N, 9.85&59; P, 2.86&59; K, 7.99.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Publication date: January 1, 2000

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more