Organic fertilization and liming of soil versus lead content in vegetables
2003
Jablonska-Ceglarek, R. | Zaniewicz-Bajkowska, A. | Rosa, R. | Franczuk, J. (Akademia Podlaska, Siedlce (Poland). Katedra Warzywnictwa)
The effect of organic fertilization and liming on lead content in soil and in the white cabbage grown in the first year after fertilization was studied. The following organic fertilizers were used: farmyard manure at the dose 60 t/ha, rye straw at the dose of 4 t/ha and rye and winter vetch culivated for green fertilizer as winter intercrops. The soil was limed with the normal calcium carbonate fertilizer at the dose of 1.5 t CaO/ha. In the first year after organic fertilization lowering of soil content of lead dissolvable in ammonium acetate, assumed available for the plants, was obtained with the use of fertilization with straw, farmyard manure and rye. The greatest lowering of lead content in cabbage was obtained with fertilization with farmyard manure and winter rye. The liming of soil, in the first year after use, did not have an essential influence on the quantity of dissolvable lead in soil and its contents in cabbage. The successive effect of organic fertilization on the content of lead dissolvable in soil and in vegetables was found only in the second year following its application. The most beneficial effect on lowering dissolvable lead content in soil and red beet was exercised by fertilization with winter vetch and rye. The liming of soil did not have an essential influence on the content of lead in vegetables
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