Written Paper

Influence of the application of Azotobacter chroococcom on mulberry (Morus alba) biomass yield  [2009]

García-Soldevilla, F., Instituto de Investigaciones de Pastos y Forrajes García, R., Instituto Nacional de Investigaciones Fundamentales en Agricultura Tropical Fernández, R., Instituto Politécnico Agropecuario Villena Revolución Valdés, R.L., Instituto de Investigaciones de Pastos y Forrajes

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Two experiments were carried out to assess the effect on yield and quality of the aerial biomass of applying different amounts of an Azotobacter chroococcum (strain MB9) dilution to the soil around the stump in a mulberry plantation used as cutting forage (Exp.1), as well as the application of the biopreparation to the foliage of this plant in equal l concentrations (Exp.2) when it was also compared to the foliar application of urea at a rate of 40 kg per hectare. A significant (P0.01) response was found in the unfertilized control for both levels of application to the soil and of Azotobacter (30 and 60 litres per hectare) and also between both Azotobacter levels for total biomass (stems and leaves), while for edible biomass (young stems and leaves) only the application of 60 L/ha significantly (P0.01) increased dry matter yield. Foliar application of Azotobacter did not show significant effect on total or edible biomass yield, while the foliar application of urea influenced significantly (P0.05) dry matter yield in both forages fractions. In experiment 1 only 60 L/ha increased significantly (P0.05) the crude protein (CP) content in both ways of foliage evaluation, while in experiment 2 there was only significant (P0.01) effect on the foliar application of urea in total biomass during the dry period. It is concluded that the application to the soil of the Azotobacter strain MB9 in dosages of 60L/ha could show a productive impact in commercial mulberry plan
tation and other perennial cultures.

From the journal

Ciencia y Tecnología Ganadera

ISSN : 1998-3050