Provoking the germination of fallen seeds with spring-finger harrows - an important agronomic method of agrophytocenosis weed control

Abstract

The purpose of the research is to investigate the quality of spring-finger harrow surface tillage to provoke the germination of carrion depending on the angle of the fingers. Research methods: theoretical – analysis of information resources and research results of spring harrows; laboratory-field – economic tests of the machine with planning of experiment, fixing of agrotechnical indicators; instrumental measurements; mathematical and statistical – processing of the obtained indicators and expert evaluation. Results. Experimental field studies of the quality of surface tillage with a spring-finger harrow were carried out in order to provoke the emergence of winter rapeseed. It was found that the harrow loosens and mulches the top layer of soil well, creating optimal conditions for the germination of weeds and weed seeds. The importance of the agrotechnical measure of field litter management and prospects for the use of spring-finger harrows in the system of soil-protective agriculture is analytically substantiated. Conclusions. The physical parameters obtained as a result of researches of a spring-finger harrow testify that at speed about 20 km / h with increase of an angle of inclination of spring fingers depth of their course increases in 1,6 times from 7,2 cm to 11,3 cm that corresponds to agricultural requirements to spring harrows (4-12 cm). The quality of soil crushing in terms of agronomically valuable aggregates up to 0-25 mm in size increases with satisfactory to excellent values with increasing angle of inclination of the fingers. The results of experimental studies show that the heavy spring-finger harrow Degelman Strawmaster SM 7000-50, in the presence of freshly cut rapeseed stubble of large size and clumps of chaff, provides satisfactory tillage, promoting the germination of rapeseed seeds and improving phytosanitary conditions for future field operations.