Critical level of phosphorus in cotton plants I: plant growth as a function of available phosphorus

Authors

  • A.A.de Medeiros Empresa de Pesquisa do Rio Grande do Norte
  • H.P. Haag Universidade de Sao Paulo; E.S.A. Luiz de Queiroz; Departamento de Química

DOI:

https://doi.org/10.1590/S0071-12761990000100006

Keywords:

cotton, varieties, phosphorus, plant growth

Abstract

In order to establish the critical level of phosphorus in annual varieties of IAC-17, LAC-19, IAC-20, CNPA 78/SME-4 and in perennial varieties CNPA 2M and CNPA 3M, young cotton plants were grown in nutrient solutions containing the following phosphorus concentrations: 0.38ppm, 1.14ppm, 3.42ppm, 10.26ppm and 30.78ppm. Plants were harvested when 75 days old. Plant height and dry weight of roots, stem and leaves were determined. The authors concluded that available P for all varieties is in the range between 19.20 and 21.9ppm.

Downloads

Download data is not yet available.

Downloads

Published

1990-01-01

Issue

Vol. 47 No. 1 (1990)

Section

Plant Nutrition

How to Cite

Medeiros, A., & Haag, H. (1990). Critical level of phosphorus in cotton plants I: plant growth as a function of available phosphorus . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 47(1), 85-106. https://doi.org/10.1590/S0071-12761990000100006