Influence of herbicides and foliar fertilizers on the yield, the structural elements of yield and technological qualities of the maize grain

Sonya Goranovska1, Shteliyana Kalinova2 and Mariyan Yanev2
1 Agricultural Academy, Institute of Maize, 5835 Knezha, Bulgaria
2 Agricultural University, Faculty of Agronomy, 4000 Plovdiv, Bulgaria

Abstract

Goranovska, S., Kalinova, Sht. & Yanev, M. (2022). Influence of herbicides and foliar fertilizers on yield, the structural elements of yield and technological qualities of the maize grain. Bulg. J. Agric. Sci., 28(1), 137–144

The field experiment was conducted in the experimental field of the Institute of Maize – Knezha in the period 2016 – 2018. After sowing of maize hybrid Kneja-613 before weed emergence Stomp New 330 EC (330 g/l pendimethalin) was used in a dose of 400 ml/da. In phase 5th leaf of the culture it was treated with Chemnico 24 SC (240 g/l nicosulfuron) at a dose of 21 ml/da. Simultaneously with Chemnico 24 SC were used: Amalgerol – growth stimulator; Microelements for Maize; Vertex H-34 and Foliar Extra – foliar fertilizers. Highest positive effect on grain yield has the system of pendimethalin and nicosulforone, Microelements for Maize and Amalgerol. The average grain yield for the period is 731.73 kg/da and its increase by 14.16% is statistically proven. The system of pendimethalin and nicosulforone at combination with Amalgerol, with Microelements for Maize, with Vertex H-34 or with Foliar Extra increases the protein content to 9.29%, the fat content to 5.61%, and the starch content to 76, 68% of the grain of the Knezha-613 hybrid.

Keywords: maize; herbicides; foliar fertilizers; technological qualities of the grain

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