English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In Morocco, the potential of agricultural waste is estimated at 34.7 MT/year. Composting is an effective way for waste management. If badly monitored, it can affect the environment. Initial C/N ratio (C/Ni) and aeration appear to be major factors impacting the composting process. This work studied the effect of C/Ni and turning frequency (TF) on the olive pomace and turkey manure co-composting process and on the final compost quality. The study concerned the Moroccan agricultural region Chaouia-Ouardigha where these two by-products are abundant and not valued. Six heaps (H1 to H6), at three levels of C/Ni (20, 22, 28) and two levels of TF (once and twice a week), were studied. Statistical tests showed that the studied factors had no significant effects on pH, total nitrogen, electrical conductivity, and cation exchange capacity (CEC). However, C/Ni had a significant increase of 60% in nitrates. Varying from 20 to 22 or from 22 to 28, C/Ni reversed its significant effect on final C/N and CEC/organic carbon. TF reduced significantly OM and final C/N by about 22% and 9% respectively. The dendrogram showed that the six heaps could form at the end two groups: group 1 (four heaps) and group 2 (two heaps) with a similarity of about 75 and 90 respectively. C/Ni of 22 and TF of twice a week seem to be an optimum to produce a final compost of better quality. This work shows that (1) C/Ni and TF significantly impact several final quality parameters of composts from olive pomace and turkey manure, and (2) composting has a strong effect of reducing the variability between heaps initially different to produce very similar final composts.

Effect of initial C/N ratio and turning frequency on quality of final compost of turkey manure and olive pomace