Translations:Benutzer:Arian/Klett-Mini-Test/1220/en

The type of crystal images in Figure 20 (p. 321) corresponds, with dung-compost manuring, to the light variants; with NPK applications, tendentially to the shade variants. In the latter, the following textural features are especially conspicuous: formation of secondary nucleation centres during crystallisation, branchings at stagnation zones, broad radially directed, irregular, less branched needle stems, unequally long, fan-shaped fine branchings. The coordination of the needle structures is subject, to a lesser degree, to a unified formative principle (cf. var. 11). In the majority of cases, the crystal value numbers of the «light plants» of the NPK plots do not differ from those of the «shade plants» of the organically manured trial members. The particularly striking agreement of the NPK crystal images of the light variants with those of the shaded trial members speaks for a substantially reduced degree of vitalisation, or nutritive value (Figure 19, var. 2 and 11, p. 320).