Effect of nitrogen and phosphorus fertilization on phytic acid concentration and vigor of oat seed (var. Saia) in Mexico [Efecto de la fertilización nitrogenada y fosforada en el contenido de ácido fítico y vigor de la semilla de avena de la variedad Saia en México]

Oats cereal is a worldwide significant crop. It is grown in restrictive climates and in rainy regions of temperate areas. Cultivation of oats produces high forage yields and grain quality, which gives it a wide variety of uses as animal feed and human food. However, the physiological quality of oat seeds in Mexico faces problems, which impact both their import and export. Phytic acid concentration in the oat seed plays a very important role since it affects seed viability, its germination capacity and potential seedling vigor. The objective of this study was to determine the effect of chemical fertilization on the phytic acid concentration and vigor of oat seeds. The study was conducted at the Technological Institute of Roque (ITR) and the National Research Institute for Forestry, Agricultural and Livestock in Celaya, Guanajuato in 2004 and 2005. Effects of two factors were evaluated at four levels each. Factor A was nitrogen fertilization (60, 100, 140, and 180 kg/ha). Factor B was phosphorus fertiliza ion (40, 80, 120 and 160 kg/ha). Variables measured were phytic acid, protein and amino acid concentrations, and vigor of oat seeds. Results indicated a cubic effect from nitrogen fertilization, and a quadratic effect from phosphorus fertilization, on the phytic acid concentration of oat seeds. The same trends were observed in seed vigor. However, there were no statistical differences in protein concentration for any of the study factors. Amino acid and phytic acid concentrations were not significantly related

Effect of nitrogen and phosphorus fertilization on phytic acid concentration and vigor of oat seed (var. Saia) in Mexico [Efecto de la fertilizaci�n nitrogenada y fosforada en el contenido de �cido f�tico y vigor de la semilla de avena de la variedad Saia en M�xico]

Oats cereal is a worldwide significant crop. It is grown in restrictive climates and in rainy regions of temperate areas. Cultivation of oats produces high forage yields and grain quality, which gives it a wide variety of uses as animal feed and human food. However, the physiological quality of oat seeds in Mexico faces problems, which impact both their import and export. Phytic acid concentration in the oat seed plays a very important role since it affects seed viability, its germination capacity and potential seedling vigor. The objective of this study was to determine the effect of chemical fertilization on the phytic acid concentration and vigor of oat seeds. The study was conducted at the Technological Institute of Roque (ITR) and the National Research Institute for Forestry, Agricultural and Livestock in Celaya, Guanajuato in 2004 and 2005. Effects of two factors were evaluated at four levels each. Factor A was nitrogen fertilization (60, 100, 140, and 180 kg/ha). Factor B was phosphorus fertiliza ion (40, 80, 120 and 160 kg/ha). Variables measured were phytic acid, protein and amino acid concentrations, and vigor of oat seeds. Results indicated a cubic effect from nitrogen fertilization, and a quadratic effect from phosphorus fertilization, on the phytic acid concentration of oat seeds. The same trends were observed in seed vigor. However, there were no statistical differences in protein concentration for any of the study factors. Amino acid and phytic acid concentrations were not significantly related

Agronomic traits associated to yield and quality in oat seeds

This study aimed the evaluation of the role of plant density and fertilization on yield and quality of oat seeds. Factors as plant density and type of fertilization (nitrogen and phosphoric) were evaluated in the study. Measurements of yield, vigor, germination, volumetric weight, weight of 1000 seeds and protein content were determined in oat seeds. Present results showed that in order to increase yield and seed quality in oat, it is necessary a plant density of 40 kg ha -1, as well as nitrogen fertilization of 60 kg ha -1. Besides, phosphoric fertilization of 80-120 kg ha -1 increased both yield and seed quality. © 2008 Asian Network for Scientific Information