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Rather than describing the techniques of forage production, this book focuses on forage husbandry for ruminants, because these animals can produce useful outputs from natural resources that humans cannot eat directly. Husbanding forage resources for ruminants is thus largely complementary to cultivating food for humans. The main emphasis of the book is on the functions of the different types of resources within forage husbandry systems. Biological and agronomic aspects are treated only to the extent needed to understand these functions. This text was written with the aim of: illuminating the principles and dynamics of forage husbandry within existing pastoral and smallholder farming systems; indicating the potentials and constraints of externally-developed innovations in forage husbandry; indicating the opportunities for indigenous development of forage husbandry; and giving development agents, especially those who can influence the planning of development programmes and the policy environment, some guidelines for understanding existing forage husbandry practices, development needs and opportunities.
“Weed Control” describes the basic biology of weeds and the characteristics of weed species. The methods of control – manual, animal-powered and engine-driven cultivation methods, biological, cultural and chemical control – are described and illustrated in detail, together with the main herbicides and their application measures. Preventative measures and how to choose a control method are included to stress the importance of appropriate methods. This volume continues by describing weed control in all the main annual and perennial tropical crops and concludes with botanical details and control measures for the main tropical weed species.