Leek production according to doses of plant compounds inoculated with fermentative microorganisms

Abstract

“Bokashi” type fermented composts are fertilizers made mainly with vegetable bran inoculated with microorganisms, whose effects after application can be influenced by microbial inoculation, however, there is an absence of experimental results that demonstrate this effect. In this sense, this work aimed to evaluate the phytotechnical performance of leeks fertilized with vegetable bran, with or without the inoculation and fermentation process, depending on the application of different doses of compost. The formulation used consisted of a mixture of wheat and castor bran in the proportion of, 60:40% (p/p), respectively. The experimental design adopted was of randomized blocks arranged in a 2 x 4 +1 factorial scheme, consisting of two methods of preparing organic fertilizers (inoculated vegetable bran and fermented for 21 days and non-inoculated vegetable bran) and four doses of the compost (4, 8, 16, and 32 t/ha), plus a control treatment (without organic fertilization). We concluded that the application of the inoculated compost and subjected to fermentation for 21 days did not provide greater benefits than the application of the mixture of the same non-inoculated vegetable bran concerning the phytotechnical features evaluated in organic leek crop. The doses of the respective fertilizers increased crop yield, with the maximum value reached equivalent to 55.37 t/ha, obtained with a dose of 9.15t/ha, which provided commercial stems with 2.61 cm in diameter.