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Liming as a means of reducing copper toxicity in black oats. Repositório Alice
COMIN, J. J.; AMBROSINI, V. G.; ROSA, D. J.; BASSO, A.; LOSS, A.; MELO, G. W. B. de; LOVATO, P. E.; LORENZI, C. R.; RICACHENEVSKY, F. K.; BRUNETTO, G..
Soils which are cultivated with grapevines have high available copper (Cu) content, which can be toxic to cover crops cohabiting vineyards, such as black oats. This study aimed to assess the effect of liming in reducing Cu toxicity in black oats grown in sandy soils. Samples of a Typic Hapludalf were collected at 0-20cm, dried and subjected to the addition of Cu (0 to 50Mg kg-1) and limestone (0, 1.5, and 3.0Mg ha-1). The soil was placed in a rhizobox and black oats were grown for 30 days. We assessed root and shoot dry matter production, copper (Cu), calcium (Ca) and magnesium (Mg) contents in the tissues; Cu content in the root symplast and apoplast, as well as Cu, carbon and pH values in the rhizosphere and bulk soil. Liming reduced Cu toxicity in black...
Tipo: Artigo de periódico Palavras-chave: Heavy metal; Fitotoxidez; Videira; Metal Pesado; Calcário; Rizosfera; Solo; Cobre; Phytotoxicity; Limestone; Rhizosphere.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103437
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Morphological and kinetic parameters of the uptake of nitrogen forms in clonal peach rootstocks. Repositório Alice
PAULA, B. V. de; MARQUES, A. C. R.; RODRIGUES, L. A. T.; SOUZA, R. O. S. de; KULMANN, M. S. de S.; KAMINSKI, J.; CERETTA, C. A.; MELO, G. W. B. de; MAYER, N. A.; ANTUNES, L. E.; RICACHENEVSKY, F. K.; NICOLOSO, F. T.; BRUNETTO, G..
Peach (Prunus persica L.) rootstock cultivars are typically selected for scion compatibility, ease of propagation, vigor, development, flowering season, yield, low need for cold temperatures, resistance to diseases, effects on the physical-chemical characteristics of the fruit, plant longevity and adaptation to adverse edaphoclimatic conditions. However, kinetic parameters related to nutrient uptake efficiency are usually not considered, such as those of nitrate (NO3 −) and ammonium (NH4 +). N is the nutrient that most impacts growth and yield. The objective of this study was to show the importance of the kinetic parameters of NO3 − and NH4 + uptake as additional criteria for selecting peach rootstocks. The experiment was conducted in a...
Tipo: Anais e Proceedings de eventos Palavras-chave: Ammonium; Nitrate; Nutrient uptake efficiency; Maximum nitrogen influx; Prunus persica L; Rootstock; Clonal peach rootstocks; Peaches.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103453
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