Fig. 1
From: Mechanism of nutrition activity of a microgranule fertilizer fortified with proteins
Changes in the mean protein concentration with time in the extracts from three soil layers acquired at different distances from the microgranule fortified with the whey protein isolate (soil layer 1: 0–1.5 cm, layer 2: 1.5–3 cm, layer 3: 3–4.5 cm)