Abstract
The article presents the results of studies of the influence of soil cultivation methods, mineral fertilizers and biofungicide on yield, grain quality of spring wheat and economic indicators. The studies were carried out in 2018-2020. The soil of the experimental site is represented by slightly leached heavy loamy chernozem with a humus content of 5.8%. The object of research is spring wheat, grade “Ulyanovskaya 100”. The subject of research is six methods of soil cultivation: 1) moldboard - (plowing by 20-22 cm PLN-4-35) control; 2) differentiated - (plowing 25-27 cm for the previous crop, disking 6-8 cm for spring wheat); 3) mulching - (by 10-12 cm APK-3 in spring); 4) comb - (OP-3S for 13-15cm); 5) disk - (paper machine for 6-8cm); 6) flat-carved - (KPSh-3 by 13-15cm). The experiment was carried out on four backgrounds: 1) N0P0K0 (control); 2. Background (N30P30K30 - for pre-sowing cultivation); 3. “Fitotrix”; 4.Background N30P30K30 + Fitotrix. The experiment was repeated four times. The arrangement of the plots is systematic, the total area of the plot is 250 m2 (10 x 25), the accounting area is 125 m2 (5 x 25). The highest yield - 3.73 t/ha, was achieved with the use of differentiated tillage, here the profitability of grain production was 161%, the energy efficiency coefficient was 3.51 units, against plowing, where the indicators were respectively by 0.15 t/ha, 52% and 0.43 units below. The greatest responsiveness in the harvesting of grain from fertilizers was observed in the variant with ridge cultivation, where the increments were 0.49 t/ha against the background of the application of N30P30K30, against the background of N30P30K30 + “Fitotrix” - by 0.96 t/ha relative to the non-fertilized background. The quality characteristics of the grain were similar regardless of the main tillage methods. The highest indicators were observed in the combination of biofungicide with mineral fertilizers, where the increase in gluten and protein was 3.4 and 1.1%, compared with the non-fertilized background
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