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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Mean cob length cm was determined using a ruler to measure from the cob base to its tip.
Height cm and stem diameter mm data were collected azosspirillum 30 March 17th, and 60 April 17th, days after sowing using a measuring tape and a digital caliper. Therefore, this study aimed at evaluating the effects of seed inoculation and leaf-spraying with Azospirillum brasilense inoculants in combination with increasing doses of N-fertilizer urea on the growth and yield of second-harvest maize.
However, in the second harvest, the cover fertilization in association with inoculation reduced yield. Within this group, the genus Azospirillum stands out. Services on Demand Journal.
Inoculation with Azospirillum, associated with nitrogen fertilization in maize
The leaf-inoculant spray was comprised of 5 doses mL of the azospirlllum diluted in 50 L ha -1 of water. The application of nitrogen, in topdressing or sowing, has positively influenced shoot dry biomass, as well as productivity, and base nitrogen fertilization has also provided an increase in leaf N content of plants Table 5.
Potencialidad de Azospirillum en optimizar el crecimiento vegetal bajo condiciones adversas. The highest yield was associated with the highest doses of nitrogen. The capacity of these bacteria to fix nitrogen allows them to promote plant growth Hungria et al. The chemical characteristics of the axospirillum soil layer prior to planting were: Canadian Journal of MicrobiologyOttawa, v. Azospirilum inoculation increases maize height and stem diameter, chlorophyll content and dry biomass weight for the shoot and root system, as well as 1,grain weight, ear length and grain yield, azopirillum the maize is inoculated via seed or leaf.
One alternative to reduce the impact of chemical fertilizers is the use of inoculants containing nitrogen-fixing and plant growth promoting bacteria.
At this point, plants may not have enough time to express the effect of the inoculation.
Plant heights cm at 30 and 60 days after sowing are shown in Table 1. The area was prepared by eliminating invasive plants through the application of 1, g ha -1 of glyphosate. Comunicata ScientiaeTeresina, v. Journal of Plant PhysiologyHobart, v. Maize Zea mays L. Plant and SoilAmsterdam, v. It can also be noted on Table 3 that without the application of nitrogen topdressing fertilization, seed inoculation with Azospirillum significantly increased the production of shoot dry biomass in This indicates its efficiency in increasing crop yield.
However, there were significant differences among control and inoculation treatments Table 4.
The regression analyses generated a linear fit for both traits, with different functions depending on the inoculation treatment Figures 3a and 3b. Three inoculation levels were tested: In agreement with the present study, Ohland et al. This study aimed at evaluating the effects of an inoculant with Azospirillum brasilense on the growth and yield of secondharvest maize.
The biological nitrogen fixation is an alternative to supply the nitrogen needed for maize. In the early studies on the associations between plants and Azospirillum spp. Inoculated plants showed a greater growth for height 9. The parameters assessed included: Results for such interactions are shown in Table 5.
As for azospjrillum grain yield, the addition of 1. These results exceed those obtained by Cavallet et al. When the harvest date was reached, azospiri,lum days after sowing June 28th,three cobs along a meter in the four central lines were randomly sampled in each plot to determine the length and 1,grain azosprillum, as well as yield. The misuse of fertilizers has become a growing concern in terms of agricultural and environmental sustainability.
Azospirillum brasilense – plant genotype interactions modify tomato response to bacterial diseases, and root and foliar microbial communities. The high cost of chemical fertilizers and concerns about more sustainable and less polluting agriculture have led to increasing interest in the use of inoculants containing bacteria that promote plant growth and enhance crop yield Hungria et al.
Responses of agronomically important crops to inoculation with Azospirillum Australian. Brazilian Archives of Biology and TechnologyCuritiba, v. To estimate the grain yield of the culture, all ears azowpirillum the usable area of each plot were collected, and then threshing was performed with the aid of a manual thresher.