نتایج جستجو برای: in modern agriculture

تعداد نتایج: 17010793  

Journal: :Bulletin of the Moscow State Regional University (Natural Sciences) 2018

Journal: :E3S web of conferences 2023

As the global demand for food continue to increase, it is important find a way meet without creating any problems environment. Cyanobacteria have prospective be utilised modern agriculture, as they contribute improvement of soil fertility, crop yield, and also do not harm Therefore, crucial understand species cyanobacteria or characteristics that could used agriculture. The development Next-Gen...

Journal: :management studies and economic systems 2015
charles odinakachi njoku emmanuel ezeji chigbu a.b.c. akujuobi

this paper examines the impact of government expenditure on the nigerian economy for the period 1983 - 2012. the government expenditure components used as the explanatory variables in the model are: expenditures on health, education, defense, agriculture and transportation and communication. the gross domestic product (gdp) was used as a parameter for measuring economic growth. in order to esta...

2011
Hans-Peter Fahrni

Sewage sludge was used as fertilizer in agriculture in Switzerland since the begin ning of modern waste water treatment. During the last 40 years several difficulties arose with the agricultural use. The problems with pathogenic germs could be solved with a prepasteurisation. The contamination with heavy metals was reduced during the years but remained a cause for concern. The fear of mad cow d...

Journal: :Annals of the New York Academy of Sciences 1999
W A Deen

Current trends in American agriculture have changed the vulnerability to use of biological weapons against plant and animal resources. The major effect has been a requirement to look again at the model of the U.S. BW program of widespread dissemination of agent and look to attack models requiring much lower levels of resources. The U.S. biological warfare program models must take the effects of...

2011
Margaret McMillan

One of the earliest and most central insights of the literature on economic development is that development entails structural change. The countries that manage to pull themselves out of poverty and get richer are those that are able to diversify away from agriculture and other traditional products. As labour and other resources move from agriculture into modern economic activities, overall pro...

2007
F. Hole

Agriculture began in the eastern Mediterranean Levantine Corridor about 11000 years ago toward the end of the Younger Dryas when aridity had diminished wild food resources. During the subsequent Climatic Optimum, agricultural villages spread rapidly but subsequent climatic changes on centennial to millennial scales resulted in striking oscillations in settlement, especially in marginal areas. N...

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