|
|
| MARTINS,KARLA V.; DOURADO-NETO,DURVAL; REICHARDT,KLAUS; FAVARIN,JOSÉ L.; SARTORI,FELIPE F.; FELISBERTO,GUILHERME; MELLO,SIMONE C.. |
| ABSTRACT Decision support for nutrient application remains an enigma if based on soil nutrient analysis. If the crop could be used as an auxiliary indicator, the plant nutrient status during different growth stages could complement the soil test, improving the fertilizer recommendation. Nutrient absorption and partitioning in the plant are here studied and described with mathematical models. The objective of this study considers the temporal variation of the nutrient uptake rate, which should define crop needs as compared to the critical content in soil solution. A uniform maize crop was grown to observe dry matter accumulation and nutrient content in the plant. The dry matter accumulation followed a sigmoidal model and the macronutrient content a power... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; Fertilizer rate estimation; Nutrient content; Nutrient partition. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200705 |
| |
