Water extracts of fresh and 3-month stabilized FYM were examined. The maturation process produced a significant increase in the water-soluble dry matter, organic C and N, pH and EC. No significant difference was found in phenol content, whereas spectroscopic measurements of the extract indicated a higher condensation of organic components with the ageing of the materials. Germination index values, higher in the mature samples, show the persistence in nearly all samples of long-lasting toxicity. Molecular weight distribution in water extract shifts markedly to the high molecular weight side as the stabilization occurs.

Water extracts of fresh and mature farmyard manure

SAVIOZZI, ALESSANDRO;
1988

Abstract

Water extracts of fresh and 3-month stabilized FYM were examined. The maturation process produced a significant increase in the water-soluble dry matter, organic C and N, pH and EC. No significant difference was found in phenol content, whereas spectroscopic measurements of the extract indicated a higher condensation of organic components with the ageing of the materials. Germination index values, higher in the mature samples, show the persistence in nearly all samples of long-lasting toxicity. Molecular weight distribution in water extract shifts markedly to the high molecular weight side as the stabilization occurs.
Riffaldi, R.; Saviozzi, Alessandro; Levi Minzi, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/13094
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