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Letopis naučnih radova Poljoprivrednog fakulteta
2013, vol. 37, iss. 1, pp. 110-119
article language: Serbian
document type: Original Scientific Paper
published on: 02/12/2013
Impact of organic fertilizer guano and biofertilizer application on yield of corn hybrid
aUniversity of Novi Sad, Faculty of Agriculture, Department of Field and Vegetable Crops
bInstitute of Field and Vegetable Crops, Novi Sad
cPoljoprivredna škola sa domom učenika, Futog

Project

Organic agriculture: Improvement of production by use of fertilizers, biopreparates and biological measures (MESTD - 31027)

Abstract

Number of organic producers and the area under certified organic production in Serbia is continuously increasing, due to growing market demand for healthy food. Organic production of various corn hybrids (popping corn, sweet corn, white-seeded corn.) in the world, but also in our country has found its place on the safe food consumers market. Studies were performed during 2011 and 2012 on experimental field of the Institute for Vegetable and Field Crops, Hops, Sorghum and Medicinal Plants Department in Bački Petrovac. The experiment was set up on certified plot, as two-factorial according to split plot design with four corn hybrids: ZP 555su, NS 620k, NS 609b and NS 6030 (the paper will present the results of three hybrids) and two fertilization systems: foliar fertilization with organic fertilizer guano with increasing concentrations and treatment of seed corn variety by Azotobacter chroococcum strain also with three different concentrations. The aim of the study was to determine whether different concentrations of Azotobacter chroococcum strain - bio-fertilizer with which the corn seed was treated and increasing concentrations of organic fertilizer guano, foliar applied through two fertilizations, affect the yield and quality of corn grain. The results of two years lasting studies of joint action of foliar application of increasing guano concentrations and decreasing concentration of Azotobacter strain in hybrids NS 620k and hybrid NS-6030, significantly increased corn grain yield in comparison to the unfertilized control variant. In the treatment with the highest applied concentration of guano in fertilization, and the lowest concentration of Azotobacter chroococcum for popping corn seed treatment, statistically higher yield was achieved in comparison to the treatments with lower concentrations of the applied fertilizer and bacterium strain. Statistically, higher yield of hybrid NS 620k was achieved in 2011, at all treatments with joint action of guano and Azotobacter, in relation to the treatments only by Azotobacter chroococcum. In both years of the study, in the grain yield of the hybrid NS 609b, there were no statistically significant differences between fertilized treatments and control, as well as between differently applied concentrations per treatment.

Keywords

organic farming; organic fertilizer guano; Azotobacter chroococcum; corn yield

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