Doug Akers from the cooperative extension service at Purdue University in Indiana suggests straw or shredded leaves for the mulch.

VOA: special.2010.06.29

So I ended up getting into Berkeley, A&M, Purdue and... Oh, no, no, Boston University, not NYU.

而我最后可以去伯克利，德州农工学院，普渡大学和……哦，不，不，还有波士顿大学，不是纽约大学，

学习化学专业的原因 - SpeakingMax英语口语达人

So UC Berkeley, Stanford, University of Texas at Austin, Texas A&M, Harvard, Princeton, NYU, Purdue.

有加州大学伯克利分校，斯坦福，德州大学奥斯汀分校，德州农工大学，哈佛大学，普林斯顿，纽约大学，普渡大学。

学习化学专业的原因 - SpeakingMax英语口语达人

"It can be really tricky if it's something with a background that's associated with livestock, " says Jacquelynn O'Palka, chair of the department of nutrition and dietetics at Indiana University-Purdue University Indianapolis.

WSJ: Can a Food for Cows Make Healthier Snickerdoodles?

Another study, from Indiana University-Purdue University Fort Wayne found that 89% of undergraduates were so connected to their smartphones that they experienced phantom phone vibrations at least once every two weeks.

FORBES: What I Learned From Swimming With My SmartPhone

Ryan Brewer, an assistant professor of finance at Indiana University-Purdue University Columbus, calculated the intrinsic valuations for 115 of the 120 teams in the Football Bowl Subdivision (excluding Air Force, Navy, Tulane, Tulsa and Wake Forest).

WSJ: How Much Is Your Alma Mater's College Football Team Worth?