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PDF | The corn crop is one of the most cultivated in the world and of corn crop, in function of foliar Azospirillum brasilense inoculation, associated with nitrogen doses. capacidade de expansão do grão em milho-pipoca. Inoculação de Azospirillum brasilense e doses de nitrogênio em milho para In this context, the use of bacteria of the genus Azospirillum brasilense appears. inoculation with Rhizobium tropici in the absence of N fertilization was efficient Crescimento do milho em resposta a Azospirillum brasilense.

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Efficiency of inoculant with Azospirillum brasilense on the growth and yield of second-harvest maize 1. Dalla Santa et al. The regression analyses indicate a growing response to treatments with increasing doses of N for weight of 1, seeds.

Os efeitos das doses de N foram significativos apenaspara massa de 1. On average, both the seed and leaf-spray inoculated treatments showed longer ear lengths, in comparison with the non-inoculated control. The initial increase in the stem diameter of plants subjected to inoculation may be associated with the production of phytohormones Moreira et al.

Biomass was determined in leaves, stalks and ears collected from a linear meter of each plot. Such changes in the root system are related to the production of growth enhancing substances by bacteria, since plant growth regulators phytohormonesmainly the indole acetic acid IAAexcreted by Azospirillum spp.

The misuse of fertilizers has become a growing concern in terms of agricultural and environmental sustainability. This study aimed at evaluating the effects of an inoculant with Azospirillum brasilense on the growth and yield of secondharvest maize.

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Inoculation with Azospirillum, associated with nitrogen fertilization in maize

The objective of this study eem to evaluate the development and yield of maize in response to inoculation with Azospirillum associated with nitrogen fertilization. An increase in the dry biomass of both the shoots and roots of the plant caused by Azospirilum was also found by Dalla Santa et al.

By the other hand, it is agreed that plant genotype is the key factor to obtain the benefits derived from biological nitrogen fixation, combined with the selection of efficient strains. Responses of agronomically important crops to inoculation with Azospirillum Australian. Nitrogen fertilization at azospiriloum has increased leaf N content; however, when complemented by inoculation, it azowpirillum a reduction of such a variable.

Russian Journal of Plant Physiology, As for productivity, it can be noted that, when inoculation with Azospirillum spp.

Brazilian Archives of Biology and TechnologyCuritiba, v. Thirty-six seeds were sown per line in an attempt to establish a population of 60, plants ha Despite this increase in relation to control, the yield values obtained in this experiment are inferior to kg ha -1 estimated for the hybrid AG YG for a population of 55 to 60 thousand plants per hectare.

Bioscience Journal

Significant eem was observed with respect to inoculation with Azospirillum brasilense. In order azospirilum do so, a measurement ruler was used for surveying. According to Embrapathe soil in the experimental area is classified as a Distroferric Red Latosol Oxisol and is composed of g kg -1 of clay, 75 g kg -1 of silt and g kg -1 of sand. Plant and SoilAmsterdam, v.

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The area was prepared by eliminating invasive plants through the application of 1, g ha -1 of glyphosate.

How to cite this article. The parameters assessed included: For the experiment carried out in Cascavel, there was significant interaction among inoculation, N application at sowing and in topdressing for the variables yield, shoot dry biomass and leaf N content Table 2. Australian Journal of Plant Physiology, Inoculated plants showed a greater growth for height 9.

Crop Science Efficiency of inoculant with Azospirillum brasilense on the growth and yield of second-harvest maize 1. However, in the second harvest, the cover fertilization in association with inoculation reduced yield.

No significant impacts on ear size were observed for different N doses, independently of the treatment. The lack of response to leaf-spray inoculation may be related to the fact that this treatment was only applied 20 days after sowing. To determine dry biomass, maize plants were cut off close to the soil. However, there were significant differences among control and inoculation treatments Table 4. Leaf chlorophyll content is used to predict the nutritional level of N in plants, and the content of this pigment is positively correlated with N content Piekielek et al.