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Teknologi Pupuk dan Pemupukan Ramah Lingkungan
Pemupukan merupakan salah satu bagian penting dalam pemeliharaan tanaman. Nutrisi mineral yang ada di tanah akan diserap oleh akar tanaman, sehingga tanaman dapat memberikan produksi yang optimal. Akan tetapi, nutrisi yang ada di tanah secara bertahap akan hilang akibat diserap tanaman, tercuci, dan terbawa oleh limpasan permukaan, sehingga nutrisi tersebut perlu untuk dicukupi kembali. Pupuk menjadi solusi untuk menyuplai kembali nutrisi yang hilang dengan jumlah yang tepat. Tidak jarang pemenuhan nutrisi melalui pemupukan tidak diperhitungkan sesuai dengan kebutuhan tanaman. Hal ini menimbulkan dampak buruk yang tidak hanya menurunkan produktivitas pertanian, tetapi juga membahayakan keber...
Pengelolaan Bahan Organik di Lahan Pertanian
Pengelolaan kesuburan tanah dan pasokan air sangat penting untuk keberhasilan produksi tanaman di semua komoditas pertanian. Penggunaan pupuk anorganik telah menjadi kontributor signifikan terhadap peningkatan produktivitas tanaman sejak revolusi hijau, dan telah mengakibatkan berkurangnya penggunaan sumber nutrisi organik yang telah diandalkan petani selama berabad-abad. Kualitas pupuk, biayanya, dan kontribusi hasil beragam seperti sumbernya. Sumber pupuk organik yang paling umum digunakan dalam produksi tanaman adalah kotoran ternak kompos dan sisa tanaman hijau, bahan organik di pekarangan dan pupuk organik dari sistem alaml dan sistem produksi material. Ketergantungan pada pupuk anorgan...
Soil Formation
Soil Formation deals with qualitative and quantitative aspects of soil formation (or pedogenesis) and the underlying chemical, biological, and physical processes. The starting point of the text is the process - and not soil classification. Effects of weathering and new formation of minerals, mobilisation, transport, and breakdown or immobilisation of dissolved and suspended compounds are discussed. Soil processes and profiles are discussed in relation to the landscape, the geosphere, and the biosphere. Emphasis lies on the universality of soil-forming processes in past and present, and on the soil as a dynamic entity that forms part of the total environment. Complexity of genetic processes in time and space is given much attention. The text gives many examples from literature and places some in a new light. The reader is guided through the subject matter by a large number of questions and problems to help understand and synthesis the material. Answers to all questions are included. This second edition has been updated to reflect recent discoveries. Printing errors have been corrected, and new photographs support the text.
Tropical Soils
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Soil Carbon
This book brings together the essential evidence and policy opportunities regarding the global importance of soil carbon for sustaining Earth's life support system for humanity. Covering the science and policy background for this important natural resource, it describes land management options that improve soil carbon status and therefore increase the benefits that humans derive from the environment. Written by renowned global experts, it is the principal output from a SCOPE rapid assessment process project.
Soil Fertility Decline in the Tropics
Wide coverage of soils and perennial cropping systems in the tropicsSynthesis of decades of researchChallenges assumptions on the benefits of plantations for soil fertilityIt is generally assumed that soil fertility decline is widespread in the tropics and that this is largely associated with annual cropping and subsistence farming. In contrast, perennial plant cover (as in plantation agriculture) provides better protection for the soil.This book reviews these concepts, focusing on soil chemical changes under different land-use systems in the tropics. These include perennial crops, annual crops and forest plantations. Two case studies, on sisal plantations in Tanzania and sugar cane in Papua New Guinea, are presented for detailed analysis. The author demonstrates that soil fertility decline is also a problem on plantations.
Food Yams
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The Yam
This study of the dioscorea genus or yam, consisting of 600 species, is a synthesis of new information. In this world of famine, the yam must play a leading role in the regions it is grown. Its cultivation may even increase once the problems which this book highlights have been resolved. The text fills a critical gap, summarizing what is known about the yam; it is also significant because it asks many questions, and encourages further experimentation.
Plundering Paradise
This gripping portrait of environmental politics chronicles the devastating destruction of the Philippine countryside and reveals how ordinary men and women are fighting back. Traveling through a land of lush rainforests, the authors have recorded the experiences of the people whose livelihoods are disappearing along with their country's natural resources. The result is an inspiring, informative account of how peasants, fishers, and other laborers have united to halt the plunder and to improve their lives. These people do not debate global warming—they know that their very lives depend on the land and oceans, so they block logging trucks, protest open-pit mining, and replant trees. In a country where nearly two-thirds of the children are impoverished, the reclaiming of natural resources is offering young people hope for a future. Plundering Paradise is essential reading for anyone interested in development, the global environment, and political life in the Third World.
Soil Science
Offers a practical introduction to the various basic methods of assessing the properties of soil. Each method is explained in a concise and accessible manner, providing useful guidance on how each method might be used in a practical situation.
