Editing Vermicompost (section)

===Large scale===
Large-scale vermicomposting is practiced in New Zealand, Canada, Italy, Japan, India, Malaysia, the Philippines, and the United States.<ref>{{cite journal |url=https://pdfs.semanticscholar.org/1873/5a709af9fea979c004e281d9f41c0e7bdc90.pdf |archive-url=https://web.archive.org/web/20190701201831/https://pdfs.semanticscholar.org/1873/5a709af9fea979c004e281d9f41c0e7bdc90.pdf |url-status=dead |archive-date=2019-07-01 |title=Vermicomposting: A Better Option for Organic Solid Waste Management |year=2008 |doi=10.1080/09709274.2008.11906100 |s2cid=983903 |access-date=2009-02-21 |last1=Aalok |first1=Asha |last2=Tripathi |first2=A.K. |last3=Soni |first3=P. |journal=Journal of Human Ecology |volume=24 |pages=59–64 }}</ref> The vermicompost may be used for farming, horticulture, market gardening, landscaping, to create [[compost tea]], or for sale. Some of these operations produce worms for bait and/or home vermicomposting.

There are two main methods of large-scale vermicomposting, [[windrow composting]] and raised bed. Some systems use a [[windrow]], which consists of organic feedstock for the earthworms to feed on. Earthworms will move into the windrows and remain within them as long as conditions are favourable; typically involving a balanced mix of feedstock, appropriate moisture content and a comfortable temperature. Often windrows are used on a concrete surface to control and manage leachate.

The world's largest vermicomposting operation by volume is MyNoke, a New Zealand-based operation that's processed over 1.4 million tonnes of organic waste since establishment in 2007.<ref>https://www.mynoke.co.nz/about-us</ref> 

Windrow turners were developed by Fletcher Sims Jr. of the Compost Corporation in Canyon, Texas. The Windrow Composting system is noted as a sustainable, cost-efficient way for farmers to manage dairy waste.<ref>{{Cite web|title = Windrow composting systems can be {{sic|nolink=y|fea|sable}}, cost effective (Research Brief #20) {{!}} Center for Integrated Agricultural Systems|url = http://www.cias.wisc.edu/windrow-composting-systems-can-be-feasable-cost-effective/|website = www.cias.wisc.edu|access-date = 2016-02-21}}</ref>
[[File:Worm bed wave.svg|thumb|350px|Movement of castings through a worm bed]]

The second type of large-scale vermicomposting system is the raised bed or flow-through system. Here the worms are fed an inch of "worm chow" across the top of the bed, and an inch of castings are harvested from below by pulling a breaker bar across the large mesh screen which forms the base of the bed.

Because red worms are surface dwellers constantly moving towards the new food source, the flow-through system eliminates the need to separate worms from the castings before packaging. Flow-through systems are well suited to indoor facilities, making them the preferred choice for operations in colder climates.