نتایج جستجو برای: history agricultural employment

تعداد نتایج: 497351  

2017
Wallace E. Huffman

Nonmetropolitan America contains almost 25 percent of the nation's population and 33 percent of its labor force. Rural residents are more likely to experience subemployment or poverty than their urban counterparts', and nonmetropolitan areas have lower wage rates and family income than urban areas. During the 1970s, rural areas benefited from a shift of manufacturing jobs from the metropolitan ...

2008
Jeremy J Burdon Peter H Thrall

Infectious disease is a major causal factor in the demography of human, plant and animal populations. While it is generally accepted in medical, veterinary and agricultural contexts that variation in host resistance and pathogen virulence and aggressiveness is of central importance to understanding patterns of infection, there has been remarkably little effort to directly investigate causal lin...

Journal: :Journal of invertebrate pathology 2014
Punya Nachappa Julien Levy Elizabeth Pierson Cecilia Tamborindeguy

The potato/tomato psyllid, Bactericera cockerelli (Šulc) transmits the bacterium, "Candidatus (Ca.) Liberibacter solanacearum" (Lso), also known as "Ca. Liberibacter psyllaurous", which causes zebra chip disease in potato and other solanaceous crops. The authors previously showed that fecundity and nymph survival is significantly reduced in Lso-infected psyllids compared to uninfected psyllids ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم کشاورزی 1387

چکیده ندارد.

2010
Mary Liz Jameson Grant T. McQuate

The Chinese rose beetle, Adoretus sinicus Burmeister (Coleoptera: Scarabaeidae: Rutelinae: Adoretini), is a broadly polyphagous scarab beetle that is economically important and causes damage to a wide variety of host plants including agricultural crops and ornamentals in Southeast Asia, China, the Hawaiian Islands and several other Pacific Islands. The species has become established in numerous...

1999
E. S. Ariga A. M. Okeyo M. M. Waithaka

4}} INTRODUCTION 1.1 Background. The major challenges facing Kenya today are poverty and unemployment. About 50% of the rural population and 30% of the urban population live below the poverty line. With 80% of the population being rural the poverty problem is overwhelming. The country has been unable to generate adequate employment and wage employment has been declining over the recent past. Wh...

Journal: :Land Use Policy 2022

This paper investigates the impact of Common Agricultural Policy (CAP) subsidies on farm employment in Hungary and Slovenia. Econometric models were estimated separately for total labor, family hired labor. We find that and, within these, Pillar I subsidies, have positive effect paid labor Irrespective country type employment, is significantly positively associated with size. Mixed results are ...

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