نتایج جستجو برای: agricultural total factorproductivity

تعداد نتایج: 890560  

Journal: :Applied soil ecology : a section of Agriculture, Ecosystems & Environment 2009
R Zornoza C Guerrero J Mataix-Solera K M Scow V Arcenegui J Mataix-Beneyto

In Eastern Spain, almond trees have been cultivated in terraced orchards for centuries, forming an integral part of the Mediterranean forest scene. In the last decades, orchards have been abandoned due to changes in society. This study investigates effects of changes in land use from forest to agricultural land and the posterior land abandonment on soil microbial community, and the influence of...

Journal: :The Annals of occupational hygiene 2009
Rena Saito Brian K Cranmer John D Tessari Lennart Larsson John M Mehaffy Thomas J Keefe Stephen J Reynolds

Endotoxin exposure is a significant concern in agricultural environments due to relatively high exposure levels. The goals of this study were to determine patterns of 3-hydroxy fatty acid (3-OHFA) distribution in dusts from four types of agricultural environments (dairy, cattle feedlot, grain elevator, and corn farm) and to evaluate correlations between the results of gas chromatography/mass sp...

2008
Susan E. Carozza Bo Li Kai Elgethun Ryan Whitworth

BACKGROUND The potential for widespread exposure to agricultural pesticides through drift during application raises concerns about possible health effects to exposed children living in areas of high agricultural activity. OBJECTIVES We evaluated whether residence in a county with greater agricultural activity was associated with risk of developing cancer in children < 15 years of age. METHO...

2004
Claude E. Boyd

Three techniques for treating fish ponds with agricultural limestone were evaluated in ponds with clayey soils in Brazil and in ponds with sandy soils in South Africa. Amounts of agricultural limestone equal to the lime requirement of bottom soils were applied by the following methods to each of three ponds: (1) direct application over the pond surface; (2) spread uniformly over the bottom of t...

Journal: :Journal of environmental management 2008
Tine Ningal A E Hartemink A K Bregt

The relation between human population growth and land use change is much debated. Here we present a case study from Papua New Guinea where the population has increased from 2.3 million in 1975 to 5.2 million in 2000. Since 85% of the population relies on subsistence agriculture, population growth affects agricultural land use. We assessed land use change in the Morobe province (33,933 km2) usin...

لطیفیان, احمد ,

  In the present research, has been studied the performance of agricultural co-operative societies in Khorasan Province. The main purposes of this study were as follows: 1-Determination of the performance level of agricultural co-operatives in organizing the dispersed human resources in agriculture sector.   2- Determination of the performance level of agricultural co-operatives in meeting memb...

2015
Roberto Ponce María Blanco

The purpose of this research is to assess the welfare effects of climate change on the Chilean agricultural sector, with special focus on changes in water availability. The productive impacts of climate change on the agricultural sector are well analyzed at both a global and national level. There is, however, a lack of evidence about the aggregated impacts, considering both demand and supply. T...

Journal: :Land 2022

Improving agricultural green total factor productivity (AGTFP) is an important aspect of sustainable development. Agricultural services, a new way farmland utilization in production, solved the problem ‘who and how to farm’ context labor off-farm migration. The literature has analyzed different factors that affect AGTFP, but there relative dearth research into services AGTFP. Therefore, based o...

Gholamreza Pezeshki Rad Mohhamad Chizari Zahra Haji Hashemi

The benefits of Information and Communication Technologies (ICTs) for agricultural extension purposes and activities are obvious. The main objective of this article is to identify encouraging and discouraging factors in application of ICTs in agricultural extension in Isfahan province of Iran. This study investigated areas of ICTs application by Extension Workers (EWs), too. The research design...

The support of agricultural sector is adopted in various countries of the globe through different means and mostly with the aims such as increasing farmers incomes, protecting domestic products, ending dependence (on foreign goods), augmenting employment and reducing poverty. This paper tries to survey the support policies in agricultural sector in different countries as far as their components...

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