Thư viện số
Giáo trình, tài liệu tham khảo và tài nguyên học tập mở.
Nguồn ngoài
Building Soils for Better Crops - Ecological Management for Healthy Soils 4e
Fred Magdoff & Harold van Es · Sustainable Agriculture Research and Education (SARE) program
Có trong mục lục: 2.03: Organic Matter And Natural Cycles · 3.02: Natural Factors
Nguồn ngoài
Public Values Leadership: Striving to Achieve Democratic Ideals
Barry Bozeman & Michael M. Crow · Arizona State University
Có trong mục lục: 7.05: Leadership Case. Brian and Kelly Swette and Sweet Earth Natural Foods
Nguồn ngoài
Irrigation Systems Management (AET 021)
Dean E. Eisenhauer, Derrel L. Martin, Derek M. Heeren, Glenn J. Hoffman · University of Nebraska Lincoln
Our goal is for the reader to understand the complexities of irrigation systems and how they are to be managed to meet the water needs of the crop production system. This is not an irrigation engineering design book; we have purposely minimized the presentation of design steps and the supporting equations. The intended audience of the book is upper-level undergraduate students and graduate in agricultural or natural resource sciences.