1981
DOI: 10.1590/s0071-12761981000200016
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Aproveitamento de um fosfato natural parcialmente solubilizado pelas culturas do arroz, milho e soja: I. Resultados preliminares

Abstract: RESUMOEm solos pouco ácidos, pobres em P disponí-vel, dois dos quais anteriormente com vege¬ tação de cerrado, foram conduzidos ensaios destinados a comparar a eficiência de um fosfato natural parcialmente acidulado com ácido sulfúrico (FAPS) com a do super simples (SS) e a do fosfato de Araxá original. Usaram-se as culturas de arroz de sequeiro, milho e soja. Verificou-se que: (1) o FAPS deu produções que não diferiram estatística (*) Entregue para publicação em 29/12/1981.

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“…Total root length and surface area from the control (AN+ZS) were inferior to UFZO and UFZS fertilizer treatments. The lower root dimensions in the presence of AN+ZS might be because of the high salt content of this source since the salt content of ammonium nitrate is equal to 105 % while for urea is 75.4 % (Malavolta et al, 1981). Ammonium nitrate (AN), as a salt, dissolves and may raise the electrolyte concentration of the fertilized soil solution in proximity to the roots.…”
Section: Roots Morphology In Response To Zn\ \N Co-fertilizationmentioning
confidence: 99%
“…Total root length and surface area from the control (AN+ZS) were inferior to UFZO and UFZS fertilizer treatments. The lower root dimensions in the presence of AN+ZS might be because of the high salt content of this source since the salt content of ammonium nitrate is equal to 105 % while for urea is 75.4 % (Malavolta et al, 1981). Ammonium nitrate (AN), as a salt, dissolves and may raise the electrolyte concentration of the fertilized soil solution in proximity to the roots.…”
Section: Roots Morphology In Response To Zn\ \N Co-fertilizationmentioning
confidence: 99%