The use of compost for soil amendment is a promising agricultural practice environmentally and economically viable. In the framework of awide research project designed to evaluate the effects of soil amendmentwith municipal solidwaste compost in comparisonwith traditional mineral fertilization practices, 54 different cultivars (Cvs) of potatoeswere AFLP (amplified fragment length polymorphism) molecularly fingerprinted. The seven most genetically biodiverse potato Cvs were used to establish an experimental field in southern Italy. The field area was divided into two portions fertilized with compost (20 Mg ha−1) or with ammonium sulphate (200 kg ha−1). No significant differences in productivity, organoleptic characteristics and element concentrationswere observed between the potato tubers obtained with both kinds of soil fertilization, while the tubers grown on compost amended soil showed, on average, higher K concentrations with respect to those grown on mineral fertilised soil. cDNA-AFLP (complementary DNA-AFLP) andMSAP (methylation sensitive amplified polymorphism) analyses were carried out on both leaves and tubers of one selected Cv to estimate if any transcriptome alterations or epigenetic modifications were induced by the two kinds of fertilization, however no variations were detected. Chemical and biological soil qualities (i.e., microbial respiration, FDA hydrolysis, alkaline and acid phosphatase) were assessed on soil samples at the start of the experiment and at the end of potato crop cycle. No significant differences in soil pH and limited ones, in the available fraction of sometrace elements,were observed;while conductivitywas much higher for the compost amended portion of the experimental field.Microbial respiration, FDA hydrolysis and acid phosphatase activities were significantly increased by compost amendment, in comparison with mineral fertilization. Finally, a sensory panel of potato Cvs detected no significant differences among qualitative descriptors and among potatoes coming from the two differently fertilized soils.
|Autori:||Cicatelli, A.;Baldantoni, D.;Iovieno, P.;Carotenuto, M.;Alfani, A.;De Feis, I.;Castiglione, S.|
|Data di pubblicazione:||2014|
|Titolo:||Genetically biodiverse potato cultivars grown on a suitable agricultural soil under compost amendment or mineral fertilization: yield, quality, genetic and epigenetic variations, soil properties|
|Rivista:||SCIENCE OF THE TOTAL ENVIRONMENT|
|Appare nelle tipologie:||1.1 Articolo in rivista|