Abstract

Composted organic materials release nitrogen at rates 1-3 % of total N/year and the leaching process can extend for many years. A model that will be able to predict the nitrogen remaining on compost is developed for estimating the need for nitrogen fertilizers to be applied again to support the growth of the vegetative cover. The aim of this work is to understand the effect of compost age on the extent and rates of nitrogen release by conducting detailed studies of one compost type at three different ages. The results will be used to construct a mathematical model of nitrogen remaining on compost following repeated storm events. After the experimental test results we can assume that Nitrogen content (%) and bulk density of compost increased with the increase in compost age. Total nitrogen released decreased with the increase in compost age. The three rain simulations (storms) performed on each of the three compost ages show that nitrogen release declined each day of the repeated daily storms. A first-order kinetics model can be used to estimate the amount of nitrogen remaining on compost after several storms.

Autore Pugliese

• Ranieri Ezio

Tutti gli autori

• AL-BATAINA B.B , YOUNG T.M , RANIERI E

Titolo volume/Rivista

INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH

Anno di pubblicazione

2014

ISSN

0013-936X

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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