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Table 1.

The content of productive moisture in the soil under grain tillage crop rotation sequence depending on the effect and aftereffect of various forms and norms of organic fertilizers in comparison with the effect of mineral fertilizers and the natural background (weighted average chronological indicators for the growth and development of crops, mm)

Norms and types of fertilizers Spring wheat (effect, 2016) Corn (1st year of aftereffect, 2017) Spring wheat (2nd year of aftereffect, 2018)
Soil layer, cm
0-20 0-40 0-100 0-20 0-40 0-100 0-20 0-40 0-100
Without fertilizers – control (natural background) 20.9 36.6 107 26.86 49.4 142.0 28.8 53.6 128.2
NPK of mineral fertilizers to obtain 4 t/ha of grain and 40 t/ha of corn green mass 22.3 39.6 119 25.9 49.4 135.0 27.8 52.0 140.5
GCM 1,0 t/ha 23.7 40.6 136 29.7 57.9 143.8 38 65.8 156.9
GCM 2,0 t/ha 23.9 44.0 137 31.2 58.3 161.6 38 67.9 173.3
GCM 3,0 t/ha 25 43.3 139 34.4 64.9 170.2 39 75.9 177.1
Straw-based manure 42 t/ha (in the composition of 3 t/ha GCM) 21.4 39.6 126 32.7 61.4 146.2 37.5 67.6 177.2
Buckwheat green manure 27 t/ha 21.1 38 120 30.1 56.7 144.1 36.1 63.7 174.6

Note.

Mineral fertilizers were applied every year directly under each crop according to the calculation and balance method for the planned yield.

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