Nutritional diagnosis of manganese toxicity in crioula and xai 32 alfafa cultivars

Authors

  • Patrícia Sarmento Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Zootecnia, Jaboticabal, SP
  • Francisco Antonio Monteiro Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Solos e Nutrição de Plantas, Piracicaba, SP
  • Moacyr Corsi Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Produção Animal, Piracicaba, SP
  • Pelerson Furlan Schiavuzzo Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Solos e Nutrição de Plantas, Piracicaba, SP
  • Renata Rodrigues Vidal Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Solos e Nutrição de Plantas, Piracicaba, SP

Keywords:

mineral composition, nutritional symptoms, Medicago sativa L

Abstract

The objectives of this study were: (i) to characterize the nutrition of Crioula and XAI 32 alfalfa cultivars, as well as to describe the toxicity symptoms of such cultivars to manganese; (ii) to evaluate the dry mass production by the plant top and roots, as well as the mineral composition of the top part of plants grown in nutrient solution at rates of manganese (0.5, 2.5, 5.0, 15.0 and 30.0 mg L-1). Plants had two growth periods. The toxicity symptoms to manganese were characterized by the yellowing of the adaxial borders of mature leaves, purpling of the abaxial borders, necrotic spots in the borders and downward cupping. There was no significant variation in the dry mass production by the plant top and roots as a function of the manganese rates. However, there were increases in manganese and magnesium concentrations in the plant top from 28 to 194 mg kg-1 and from 4.86 to 6.36 g kg-1, respectively. For iron concentration in the plant top, there was a decrease from 156 to 131 mg kg-1. No differences between cultivars were observed for the dry mass production and for concentrations of magnesium, copper, zinc, iron and manganese in the alfalfa€™s top part. On the other hand, a higher phosphorous concentration was observed in the top part of the Crioula cultivar (1.92 g kg-1) when compared to the XAI 32 cultivar (1.55 g kg-1) in the first harvest and at manganese rate of 15 mg L-1. Calcium concentration was higher in the top part of the XAI 32 cultivar (2.99 g kg-1) when compared to the Crioula cultivar (2.33 g kg-1).

Downloads

Download data is not yet available.

Published

2013-11-29

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Nutritional diagnosis of manganese toxicity in crioula and xai 32 alfafa cultivars. (2013). Bulletin of Animal Husbandry, 59(2), 137-145. http://bia.iz.sp.gov.br/index.php/bia/article/view/1361

Most read articles by the same author(s)

1 2 3 4 > >>