Physicochemical and Biological Indicators of Soils in an Organic Farming System

Table 5

Phytomeliorative effect of safflower on the content of chemical indicators of dark chestnut soils.

Soil layer, cm	Nitrate nitrogen, mg/100 g of soil			Mobile phosphorus, mg/100 g of soil
	Spring	Autumn	Difference	Spring	Autumn	Difference
0–10	4.88	5.10	+0.22	1.19	1.26	+0.07
10–20	5.20	5.57	+0.37	1.11	1.15	+0.04
0–20	5.04	5.34	+0.30	1.15	1.21	+0.06