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| Zobiole,Luiz Henrique Saes; Castro,César de; Oliveira,Fábio Alvares de; Oliveira Júnior,Adilson de; Moreira,Adônis. |
| Most studies in the literature regarding the uptake of micronutrients [zinc (Zn), manganese (Mn), iron (Fe), copper (Cu) and boron (B) accumulation] by sunflower are old. For this reason, this work is aimed to establish curves of sunflower micronutrient accumulation in tropical edaphoclimatic conditions. The experiment was conducted in field on Rhodic Eutrudox, located at the experimental farm of Embrapa Soja in Londrina-PR, using the commercial hybrid BRS 191. The experimental design was completely randomized, with four replicates. The experimental units consisted of 14 lines with a spacing of 0.70 meter between lines and 25.0 meters in length, with final density of 42,858 plants per hectare. Plants samples were collected every 14 days after emergence.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus; Nutrient uptake rate; Micronutrients; Mineral nutrition. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000200016 |
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| Oliveira Júnior,Adilson de; Prochnow,Luís Ignácio; Klepker,Dirceu. |
| Soybean (Glycine max L. Merrill) crop started to be planted in the Brazilian Cerrado in the 1970's, and this region currently contributes with 57% of total soybean production in Brazil. Under natural conditions in this region, the soils present chemical limitations such as low pH, low Cation Exchange Capacity, low nutrient availability, and moreover, clayey soils have a high P fixation capacity mainly due to high contents of Fe/Al oxides. Since P is the most limiting nutrient is this region, a study was performed in the state of Maranhão, Brazil, in a Typic Hapludox, with clayey texture and low available P (extracted by resin). Treatments were defined to evaluate soybean response to broadcast Arad phosphate rock (PR) plus banded triple superphosphate (TSP)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Glycine max L. Merrill; Oxisols; P source solubility; Phosphorus; Cerrado soils. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300016 |
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