Tag Archives: Azospirillum brasilense

1464-1472 E.R.T. Cruz, F.A. Teixeira, D.D. Fries, R.R. Jardim, N.T. Cruz, F. Rossa, A.P.S. Santos, E.M.V. Porto and H.S. Silva
Yield and morphology of Nopalea cochenillifera under N fertilization and biological inoculation
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Yield and morphology of Nopalea cochenillifera under N fertilization and biological inoculation

E.R.T. Cruz*, F.A. Teixeira, D.D. Fries, R.R. Jardim, N.T. Cruz*, F. Rossa, A.P.S. Santos, E.M.V. Porto and H.S. Silva

State University of Southwest of Bahia, BR45700-000, Itapetinga, Bahia, Brazil
*Correspondence: elitonrtdacruz@hotmail.com; teles.nc@gmail.com

Abstract:

The objective was to evaluate the effect of inoculation with Azospirillum brasilense and levels of nitrogen fertilization on the productive aspects of the spineless cactus (Nopalea cochenillifera). The experiment was carried in Ribeirão do Largo, Southwest region of the state of Bahia, from April 2019 to April 2020. The experiment was carried out in a 2×4 factorial, in a randomized block design with eight treatments and four replications. The treatments consisted of the absence or inoculation with Azospirillum brasilense and nitrogen fertilization levels 0, 50, 100 and 150 kg¹ of N ha–¹. There was a positive effect for the use of the bacteria on cladode area index, height, number of secondary, tertiary and total cladodes, total weight for cladodes of all orders and also for final weight per ha–¹. There was a significant effect of the use of the inoculant for the levels of total soluble sugars and starch, where there was a decrease in the values for the treatments submitted to the use of the bacteria. There was a quadratic effect for the weight of the tertiary cladodes, number of tertiary cladodes and total of spineless cactus when submitted to nitrogen fertilization levels. There was a linear test for cladodes area index when nitrogen fertilization was used. The use of Azospirillum brasilense is positive for the cultivation of spineless cactus, improving development and increasing crop productivity.

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412-418 N. Mikhailouskaya and I. Bogdevitch
Effect of biofertilizers on yield and quality of long-fibred flax and cereal grains
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Effect of biofertilizers on yield and quality of long-fibred flax and cereal grains

N. Mikhailouskaya and I. Bogdevitch

Research Institute for Soil Science and Agrochemistry, Kazintsa 62, 220108 Minsk, Belarus;e-mail:brissa5@mail.belpak.by, bionf@yandex.ru

Abstract:

Application of biofertilizers provides the implementation of biological mechanisms of plant nutrition, growth promotion and protection. These are arguments for the use of biofertilizers as elements for nutrient management in organic agriculture, along with low cost and environmental safety. Azobacterin and Kaliplant were developed in Belarus. Natural N2-fixing bacteria are acting agents of Azobacterin. Kaliplant contains a natural strain of K-mobilizing bacteria. Both strains possess P-solubilization activity. The effects of biofertilizers on crop yield and quality were studied in field experiments on Luvisol soils. The contribution of biofertilizers for the crop yield increment varied in range from 8–30%. Azobacterin applications were most effective for barley and long-fibred flax. Kaliplant inoculations were mostly profitable for winter rye and winter triticale. Biofertilizers positively influenced crop production quality. Reliable increase of protein content and the improvement of amino acid composition in cereal grains were observed.

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