Root and shoot development, nutrition and uptake efficiency of macronutrients and zinc by upland rice cultivars as affected by phosphorus fertilization

Authors

  • Carlos Alexandre Costa Crusciol Faculdade de Ciências Agronômicas, Universidade Estadual Paulista
  • Adriano Stephan Nascente Embrapa Arroz e Feijão
  • Munir Mauad Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados
  • Ana Claudia de Lima Silva Embrapa Arroz e Feijão

DOI:

https://doi.org/10.5433/1679-0359.2013v34n5p2061

Keywords:

Oryza sativa L., Nutrients, Rooting system, Pot growth.

Abstract

In Brazil, phosphorus availability is one factor that that more limit yield of upland rice under rainfed system. Then, better understanding of cultivars development at phosphorus soil fertilization is very important in the production systems making this more sustainable. The objective was to evaluate the influence of phosphorus doses applied to the soil over the root length, root and shoot dry matter, concentration and content of macronutrient and zinc in shoot and root system as well as the efficiency of nutrient absorption per meter root of upland cultivars of intermediate and modern groups. The experiment was carried out in greenhouse conditions in a completely randomized design in factorial scheme 4 x 4. Treatments were four levels of P fertilization applied at the soil (0, 50, 100 and 200 mg dm-3 of P) and four upland rice cultivars (Maravilha – modern group, IAC-201, IAC-202 and Carajás – intermediate group). There is increase in phosphorus availability in the soil with increasing levels of P fertilization. Under low phosphorus availability, cultivars of the intermediate group have better shoots and root system development in relation to the modern cultivar group. Level of phosphorus affected nutrients contents in shoots and root system of upland rice cultivars. The increasing phosphorus fertilization increased absorption of nutrients per meter of root; and although under higher phosphorus availability there was a bigger root growth, in low phosphorus availability root growth was bigger at the expense of shoot growth.

 

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Author Biographies

Carlos Alexandre Costa Crusciol, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista

Engº Agrº, Prof. Titular do Deptº de Produção Vegetal, DPV, Faculdade de Ciências Agronômicas, FCA, Universidade Estadual Paulista, UNESP. C P 237, CEP 18603-970. Botucatu, SP. Bolsista CNPp.

Adriano Stephan Nascente, Embrapa Arroz e Feijão

Engº Agrº, Pesquisador Embrapa Arroz e Feijão, Santo Antônio de Goiás, GO.

Munir Mauad, Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados

Engº Agrº, Prof. da Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, UFGD, Dourados, MS.

Ana Claudia de Lima Silva, Embrapa Arroz e Feijão

Engª Agrª, Discente de Mestrado em Agronomia, Área de concentração Agricultura do Deptº de Produção Vegetal, DPV, UNESP, Botucatu, SP.

Published

2013-10-17

How to Cite

Crusciol, C. A. C., Nascente, A. S., Mauad, M., & Silva, A. C. de L. (2013). Root and shoot development, nutrition and uptake efficiency of macronutrients and zinc by upland rice cultivars as affected by phosphorus fertilization. Semina: Ciências Agrárias, 34(5), 2061–2076. https://doi.org/10.5433/1679-0359.2013v34n5p2061

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