Use of small-sized units when spreading fertilizers on mountain slopes

Abstract

BACKGROUND: The results of R&D on a laboratory sample of the unit for spreading mineral fertilizers on mountain slopes, which can increase labor productivity and yield rate of mountain forage lands by 15–20%, are presented.

AIM: Development of a small–sized laboratory sample of the unit for surface spreading of mineral fertilizers, ensuring accelerated restoration of productive and qualitative functions of natural grass stands of fallow forage lands.

METHODS: The technical expertise and testing of the unit and the technology were carried out in the mountainous zone of the Republic of North Ossetia — Alania (Dargava basin, the station of North Caucasian Research Institute of Highland and Piedmont Agriculture) at an altitude of 1540 meters above sea level. The indicators of the test conditions and functional performance of the unit have been determined according to the OST 10.5.1-2000 industry standard. Surface fertilization was carried out according to the OST 10.7.1.-2000. “Testing of agricultural machinery. Machines for applying mineral fertilizers, lime materials and gypsum” industry standard.

The study subject was the technology of spreading granular fertilizers, the design of the unit and working bodies: pendulum spreading devices, spreading rates and method of spreading fertilizers.

RESULTS: A laboratory sample of the small-sized unit based on the KChG-2.4 cultivator of North Caucasian Research Institute of Highland and Piedmont Agriculture design for surface application of mineral fertilizers has been developed and manufactured. The block module is a hinged frame structure with a tow-lifting device, pendulum spreading tubes and rolling rollers installed on it. The considered motion of the mining unit is across the slope from top to bottom in a shuttle manner with rolling of the sown granules by rolling rollers. The tests were carried out on a rarefied section of the northern slope with a steepness of 13–16° in the area “Sugsadtanrag”.

CONCLUSION: The practical application of the small-sized unit for surface spreading of mineral fertilizers with their subsequent rolling in areas in mountainous and foothill zones will ensure a reduction in the degradation processes of slope areas by accelerating the restoration of the quality and quantity of perennial grasses of fallow forage lands.

Keywords

unit / block module / fertilizers / granules / mountains / slopes / meadows / pastures

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