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| Raposo,Roberto Wagner Cavalcanti; Muraoka,Takashi; Basso,Luiz Carlos; Lavres Jr.,José; Franzini,Vinicius Ide. |
| The phosphate fertilization represents the most costly fraction of soybean crop production. Efficient soybean cultivars for P absorption and utilization in soils of medium available P are highly desirable and might contribute for increasing crop production potential. Thirty two soybean [Glycine max (L.) Merr.] cultivars recommended for 'Cerrado' and differing in growth cycle (early, semi-early, semi-late, and late) were grown in a dystrophic Typic Haplustox Cerrado soil to evaluate the acid phosphatase activity, P content in the diagnostic leaf, and shoot biomass. There were differences among the soybean cultivars within all maturation groups in acid phosphatase activity and shoot biomass. The diagnostic-leaf P-content showed significant differences on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymatic activity; Diagnostic-leaf; Maturation group. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400014 |
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| Lavres Jr.,José; Ferragine,Maria Del Carmen; Gerdes,Luciana; Raposo,Roberto Wagner Cavalcanti; Costa,Michelle Nazaré Xavier da; Monteiro,Francisco Antonio. |
| Areas with Aruana grass (Panicum maximum Jacq.) in Brazilian pastures, especially those used by sheep, have expanded due to yield and morphological characteristics of this grass that are favorable to these animals. Nevertheless, the knowledge concerning yield attributes of this grass in relation to nitrogen fertilization is very limited. The objective of this research was to evaluate yield and physiological attributes in this forage grass when grown in nutrient solutions containing N rates. The experiment was carried out in a greenhouse with plastic pots containing ground quartz as substrate, during the Spring season. Six N rates in the solution (14, 112, 210, 294, 378, and 462 mg L-1), with 70% N-NO3- and 30% N-NH4+ were tested. Experimental units were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Panicum maximum; Leaf area; Phyllochron; Leaves; Tillering. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600011 |
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