Influence of agro-technical methods on agro-physical properties of fertility in sod-podzolic soil and oat yield capacity

Experiment on study of different methods of basic and pre-sowing treatment of sod-podzolic soil was found in 2011 on experiment field of Federal Agricultural Scientific Center of North-East. Influence was studied of investigated factors on agro-physical parameters of soil fertility and yield capacity in oat variety Selma. Use of combined units KBM-4.2 and APPN-2.1 supplied the best state of soil arable layer; coefficient of structuring was 7.1-7.3 and 4.2-4.9 correspondingly. Soil density in studied variants was at optimal level (1.1-1.3 g/cm3); in 2017, there was soil compacting up to 1.49 g/cm3. Stock of productive moisture in arable soil layer during years of study was estimated as “satisfactory”. Highest yield capacity was obtained in variant with PNL-3-35 ploughing and pre-sowing treatment with sowing unit APPN-2.1 - 3.46 t/ha. Direct correlation of medium level was pointed out between yield capacity and stock of productive moisture (in seedling stage r = 0.64; in ear formation stage r = 0.52).