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Introductory Soil Chemistry, Fertility And Microbiology
This note deals with the meaning and explanation of the basic principles of soil chemistry, fertility and microbiology. Explanations were also given on the basic concepts of these fields of soil science. This note focused on: soil phases, cation exchange capacity and base saturation, soil acidity and liming, nutrient movement in soils,nutrient uptake mechanisms, chemistry, status and availability of essential nutrients in soils.
Author(s): National Open University of Nigeria
96 Pages 
Principles and practices of agricultural analysis
This is a very enlightened online material that has gone into deep detail on the methods and principles of agricultural analysis, especially concentrating on the chemistry of phosphates. While elaborating on general analytical processes that should be used while carrying out agricultural research, Wiley also goes ahead to give detail method for analyzing mineral phosphates and phosphoric acid. The general text introduces numerous techniques in the realm of analytical determinations, including the citrate method and volumetric determination, amongst others, and the importance of possessing the right titration in agricultural chemistry. The book will also take great length discussing chemistry involved in the manufacture of superphosphates, which is inevitable in improving soil fertility. Of special benefit to students, researchers, and other professionals in agricultural science are the broad foundational knowledge provided in the book that applies in academic and practical settings.
Author(s): Harvey Washington Wiley
NA Pages
UC Davis course notes on soil chemistry include some of the interactions in the soil system. These include three-phase system of the soil; solid phase reactivity; and the chemistry of solutions within the soil matrix. Cation exchange reactions, soil buffering and pH dynamics, and redox reactions affecting chemistry in soil have also been covered. This resource has been very important especially for students who wish to understand the intricate processes by which chemicals regulate soil fertility and health and grant them knowledge that ensures effective soil management.
Author(s): UC Davis
NA Pages