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Roots and nitrogen in cropping systems of the Semi- Arid tropics / edited by: O. Ito ... [et al.]

Tác giả : edited by: O. Ito ... [et al.]

Nhà xuất bản : Japan International Research Center for Agricultural Sciences

Năm xuất bản : 1996

Nơi xuất bản : Tsukuba, Ibaraki, Japan

Mô tả vật lý : xiii, 691 p. : ill. ; 27 cm

ISBN : 4906635016

Số phân loại : 631.4

Tùng thư : JIRCAS International Agriculture Series No.3

Chủ đề : 1. Nitrogen -- Congresses -- Fixation. 2. Cropping systems -- Congresses -- Tropics. 3. Crops and nitrogen -- Congresses -- Tropics. 4. Hệ thống canh tác. 5. Nông nghiệp nhiệt đới.

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Tóm tắt :

This book is the proceedings of a workshop on roots and N dynamics in cropping systems of the semi-arid tropics, held in Patancheru, Hyderabad, India, in 1994, are presented. In 47 papers the following subjects are dealt with: (1) the significance of intercropping in various cropping systems; (2) the functions and morphology of root systems, and their changes in relation to genotypes of crops and environmental stresses such as excess and deficiency of moisture and nutrients; (3) the N input from biological-N fixation in relation to its balance with C input and N uptake; (4) the status and dynamics of N in soils and the effects of long-term cropping on the N budget, and effective ways of N management in intercropping; and (5) recent developments in modelling root growth, root interaction, crop growth, and the N budget in intercropping and in farming systems. The main cropping systems are pigeon pea-based systems as widely practised in India; other crops include chickpea, cotton, rice, sorghum, wheat, and white clover (Trifolium repens).

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