Efficiency of biological content of soils on the vineyards of the Kabardino-Balkaria

Abstract

In the conditions of intensive grape production in a monoculture mode, there is a violation of the small biological cycle of nutrients and a decrease in the productivity of ampelocenoses. The solution to this problem is the introduction of a biological system of soil maintenance through sideration, sprigging the vineyards, the use of biofertilizers and an agrobiological stimulator in the form of effective microorganisms. The aim of the work is to study the humic-sod system of soil content compared with the control (dead fallow). The studies were conducted in 2015-2018 on the territory of the Kabardino-Balkarian Republic (transition zone from foothill to steppe).

The object of the study is planting grapes of Bianca variety. The soil content in the rows between the vineyards of the experimental plots, the morphometric parameters (shoot length, cluster weight) and the quality of the grapes (the mass fraction of sugars and titratable acids) have been studied in the control (dead fallow), with an alternate strip and overall sprigging of the rows between the legume-cereal mixture (red clover – 40,0 %, redtail fescue grass – 26,7 %; purple – stem catmint – 33,3 %), followed by mowing the grass and creating a mulch cover. In the fall of 2018 cut and root residues were buried into the soil. The humic-sod system helps to restore the process of soil fertility reproduction, improve its water and physical parameters, prevent water erosion, create a favorable microclimate, increase the yield of grapes and quality of grape juice.

The feasibility of overall (at an annual precipitation of more than 600 mm) and alternate strip (at an annual precipitation of 520-540 mm) sprigging of rows with legumecereal mixture of perennial grasses has been proved.