Changes in Paddy Soil Fertility in Tropical Asia under Green Revolution, Yanai
Автор: Hashmi Название: Environmental Pollution of Paddy Soils ISBN: 3319936700 ISBN-13(EAN): 9783319936703 Издательство: Springer Рейтинг: Цена: 13974.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The paddy field is a unique agro-ecosystem and provides services such as food, nutrient recycle and diverse habitats, etc. Chemical contamination of paddy soils has degraded this important ecosystem quality. This book provides our current understanding of paddy soils pollution.
Название: Indian agriculture after the green revolution ISBN: 0367374838 ISBN-13(EAN): 9780367374839 Издательство: Taylor&Francis Рейтинг: Цена: 6736.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The book provides a comprehensive discussion on the different aspects of changes and challenges faced by Indian since the Green Revolution. It also looks at how Indian farmers and policymakers are responding to the challenges.
Описание: This book investigates the effect of the Green Revolution (GR) on long-term changes in the fertility status of paddy soils in tropical Asia. While information on long-term changes in soil fertility status are rather limited due to difficulties in obtaining past data or samples for comparison, this investigation on temporal changes in soil fertility is possible by comparing fertility status in the 2010s, which the authors examined recently, with those from the 1960s, when GR was initiated, which was reported by Kawaguchi & Kyuma (1977). More than 220 paddy soils collected from Thailand, the Philippines, Malaysia, Bangladesh, and Indonesia were analyzed for their physicochemical properties as well as total and available fractions of plant macro- and micro- essential elements, and their temporal changes were examined in addition to their spatial variation in each country. The most significant change was a drastic increase of available phosphorus in soils, possibly due to fertilization after the GR. Changes in organic matter, pH, and other nutrients were relatively small. A considerable decrease in the content of some micronutrients was also observed. Long-term studies on soil fertility status in the past and present will be useful to establish soil/fertilizer management for sustainable rice production in the future. This book is an essential reading for soil scientists, agricultural scientists, environmental scientists, as well as policymakers and nongovernmental officers such as FAO.
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