This happened before the Israeli military left. Here is the New York Times report on it:

http://www.nytimes.com/2005/07/15/world/middleeast/israeli-settlers-demolish-greenhouses-and-gaza-jobs.html

"About half the greenhouses in the Israeli settlements in Gaza have already been dismantled by their owners, who have given up waiting to see if the government was going to come up with extra payment as an inducement to leave them behind, say senior officials working on the coordination of this summer's Israeli pullout from Gaza."

Also, from another article from the New York Times:

http://www.nytimes.com/2005/11/28/world/middleeast/gaza-gets-ready-for-a-harvest-of-produce-and-promise.html

"After overcoming numerous obstacles, the Palestinians said their main worry now was the Karni border crossing between the Gaza Strip and Israel, critical to moving the produce to the markets."

This article gives a complete overview:

http://mondoweiss.net/2014/08/propaganda-dehumanize-palestinians/