نتایج جستجو برای: agricultural r

تعداد نتایج: 544555  

Journal: :The Journal of antimicrobial chemotherapy 2012
Yang Wang Stefan Schwarz Zhangqi Shen Wanjiang Zhang Jing Qi Yuqing Liu Tao He Jianzhong Shen Congming Wu

Key Laboratory of Development and Evaluation of Chemical and Herbal Drugs for Animal Use, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China; Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Höltystr. 10, 31535 Neustadt-Mariensee, Germany; Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, I...

2013
David Cheong Marion Jansen Ralf Peters

9 7 8 9 2 2 1 2 6 8 1 2 3 IL O -U N C TA D S H A R E D H A R VE S TS : A gr ic ul tu re , Tr ad e, a nd E m pl oy m en t Agriculture employs more than a billion people in developing countries, representing 48 per cent of the developing-country labour force. This book analyses how agricultural trade affects labour markets in developing countries and in particular what it implies for the creation...

2006
Michael L Burton Douglas R White

Female agricultural contributions decline with agricultural intensification. W e formulate a n d test a theory of t h e processes of agricultural intensi fcation that explains a high proportion o f t h e variance i n female contributions t o agriculture. Five variables show replicable effects across two or more regions o f t h e world. These are n u m b e r o f d r y months , importance of dome...

2014
T MOHAPATRA S ROBIN N SARLA M SHESHASHAYEE A K SINGH K SINGH N K SINGH S V AMITHA R P SHARMA

EMS Induced Mutants of Upland Rice Variety Nagina22: Generation and Characterization T MOHAPATRA1+, S ROBIN2, N SARLA3, M SHESHASHAYEE4, A K SINGH5, K SINGH6, N K SINGH1, S V AMITHA MITHRA1 and R P SHARMA1* 1National Research Centre on Plant Biotechnology, Indian Agricultural Research Institute, New Delhi 110012, India 2Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India 3D...

2002
Michael Kremer Alix Peterson Zwane Gavin McGillivray Ranajit Bandyopadhyay Nicholas Hayden

Agricultural needs in poor, tropical countries differ significantly from those in temperate, rich countries. Yet little agricultural research is performed on products for the tropics. Private sector research is particularly concentrated in rich countries. This is a result of significant failures in the market for R&D, in particular, the difficulty of preventing the resale of seed in developing ...

2005
D. Andrew Scott McLearen Norris James A. Burger

Short-rotation hardwood plantations generally require repeated applications of nitrogen (N) fertilizer to maintain desired growth and are being installed on two previous land uses: agricultural fields and cutover forest lands. Because the soil organic matter chemistry is different between agricultural field and cutover soils, indices of N availability developed for one land use or the other may...

Journal: :International journal of phytoremediation 2010
Ying Teng Yongming Luo Xianghui Sun Chen Tu Li Xu Wuxing Liu Zhengao Li Peter Christie

A field experiment was conducted to study the effects of inoculation with the arbuscular mycorrhizal fungus Glomus caledonium and/or Rhizobium meliloti on phytoremediation of an agricultural soil contaminated with weathered PCBs by alfalfa grown for 180 days. Planting alfalfa (P), alfalfa inoculated with G. caledonium (P + AM), alfalfa inoculated with R. meliloti (P + R), and alfalfa co-inocula...

2013
P. C. Tizioto J. E. Decker J. F. Taylor R. D. Schnabel M. A. Mudadu F. L. Silva G. B. Mourão L. L. Coutinho P. Tholon T. S. Sonstegard A. N. Rosa M. M. Alencar R. R. Tullio S. R. Medeiros R. T. Nassu G. L. D. Feijó L. O. C. Silva R. A. Torres F. Siqueira R. H. Higa L. C. A. Regitano

P. C. Tizioto, J. E. Decker, J. F. Taylor, R. D. Schnabel, M. A. Mudadu, F. L. Silva, G. B. Mourão, L. L. Coutinho, P. Tholon, T. S. Sonstegard, A. N. Rosa, M. M. Alencar, R. R. Tullio, S. R. Medeiros, R. T. Nassu, G. L. D. Feijó, L. O. C. Silva, R. A. Torres, F. Siqueira, R. H. Higa, and L. C. A. Regitano Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, São ...

2006
John M. Antle Roberto O. Valdivia

© Australian Agricultural and Resource Economics Society Inc. and Blackwell Publishing Ltd 2006 doi: 10.1111/j.1467-8489.2006.00315.x Blackwell Publishing Ltd Oxford, UK AJAR The Australian Journal of Agricultural and Resource Economics 1364-985X &ãgr; Australian Agricultural and Resource Economics Society Inc. and Blackwell Publishers Ltd 2006 50RIGINAL ARTICLE Ecosyst m services f om ag icult...

Journal: :اقتصاد و توسعه کشاورزی 0
مهرابی بشرآبادی مهرابی بشرآبادی جاودان جاودان

abstract research and development (r&d;) spending plays a major role in innovation, raising productivity and increasing economic growth. the purpose of this paper is to investigate the impact of r&d; spending on growth and total factor productivity (tfp) in iran's agricultural sector. we estimate growth and productivity models using auto-regressive distributed lag (ardl) approach and data over ...

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