This PDF is a comprehensive
text that the department of soil science and agricultural chemistry at S.V.
Agricultural College has developed on the different inputs necessary to improve
agricultural productivity. The document is preceded by an introduction to bulky
organic manures, where the amount lost at the time of collection and storage of
farm yard manure (FYM) is reported. It deals with the preparation of composts,
green manures, and terms of various organic wastes-terms like sewage and sludge.
The book covers concentrated organic manures, biogas plants, and processes of
manufacture of commercial fertilizers - both of nitrogenous, phosphatic, and
potassic type. It also gives a rundown on mixed fertilizers and amendments, and
secondary and micronutrient fertilizers. An essential feature is the Fertilizer
Control Order, and thus this article becomes a fundamental reference point for
understanding the role of fertilizers and manures in sustainable agriculture.
Author(s): Department of Soil Science
and Agricultural Chemistry, S.V.Agricultural College
It is a comprehensive manual useful for students and practitioners in
agricultural chemistry mainly dealing with techniques for soil analysis. The
whole process elaborated goes from collecting and processing soil samples up to
analyzing soil profiles and characteristics, from determining soil density,
moisture content, and maximum water holding capacity to hydraulic conductivity
and assessment of soil texture. The manual also touches on some critical
measurements: soil temperature, electrical conductivity (EC), pH, and cation
exchange capacity. These contain detailed methods and practical applications
that provide necessary skills in the effective analysis of soils, thereby
adequately practicing agriculture and crop management.
Author(s): Prof. H. P. Dholariya and Dr. Navneet
Kumar
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.