Comparative assessment of use of a multifunctional tillage unit in corn cultivation technology for grain

Abstract

When corn cultivation for grain, the protection of crops from weeds is an issue, especially during the period of germination and plant height gain of about 20–30 cm, when cultivated plants begin to shade and oppress weeds. The main methods of protecting corn crops are the chemical method, which consists in spraying with herbicide in several repetitions during the growing season, and the mechanical method using several row-to-row cultivations. The main disadvantage of the chemical method is the herbicidal load on the soil, which can be eliminated when using row-to-row developments by a row cultivator with a set of scientifically sound design and operating parameters. The purpose of these studies is to substantiate the increase in corn grain yield by improving the technological process of row-to-row processing of crops and by reducing the herbicidal load in the Amur region. It was found out that the use of two universal pointed paws with displacement in combination with a chisel-shaped paw and needle discs in the center of a multifunctional tillage unit for row-to-row tillage and weed eradication in wide-row corn crops ensured grain yields at the level of 9.7 t/ha without the use of chemical weed control agents.

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