نتایج جستجو برای: land productivity

تعداد نتایج: 198818  

Journal: :iran agricultural research 2016
j. aminifar m. ramroudi m. galavi g.r. mohsenabadi

abstract- declining land productivity associated with decreasing soil organic carbon and nutrients is a significant issue in monoculture production. the field experiment with different rates of fertilizer systems (60 kg ha-1 n + 100 kg ha-1 p, 300 kg ha-1 bio-organic (organic fertilizer), 3 kg ha-1 bioumik (biofertilizer), 30 kg ha-1  n + 50 kg ha-1 p + 150 kg ha-1 bio-organic fertilizer and 30...

2013
C Eisfelder I Klein J Huth M Niklaus C Kuenzer

Monitoring of net primary productivity (NPP) is especially important for the fragile ecosystems in arid and semi-arid regions. Great interest exists in observing large-scale vegetation dynamics and understanding spatial and temporal patterns of NPP in these areas. In this study we present results of NPP obtained with the model BETHY/DLR for Kazakhstan for 2003-2011 and its spatial and temporal ...

Journal: :Journal of dairy science 2011
J del Corral J A Perez D Roibas

The effect of land fragmentation on agriculture has worried policymakers for a long time because it is expected to be a negative effect. Land consolidation policies are frequently implemented to soften the degree of land fragmentation. However, to the authors' knowledge, no study in the dairy sector has empirically analyzed the role of land fragmentation on farm productivity and profits. This s...

2016
Jacob Ricker-Gilbert Nicole M. Mason Jordan Chamberlin

Informal land markets, particularly land rental markets, are emerging rapidly in many parts of subSaharan Africa (SSA). Land rental markets have the potential to contribute to structural transformation if, for example, such markets facilitate the transfer of land from less productive to more productive farming households. Although there is a growing literature on the determinants of smallholder...

2011
Klaus Deininger Songqing Jin Vandana Yadav Anne Ruohonen

We use data on inter-generational gains in educational attainment by some 500,000 individuals in 200 West Bengal villages to explore gender-differentiated impacts of land reform on human capital accumulation at the individual level. While there are significant gains (of about 0.3 years for males) in the immediate post-reform generation, their magnitude pales in comparison to second-generation e...

2011
Winslow D. Hansen Helen T. Naughton

While tropical land clearing in the Brazilian Amazon provides for the livelihoods of Brazilians from a variety of socio-economic backgrounds, it also contributes to changes in climatological and ecological processes at a variety of scales. To develop sustainable approaches that balance the needs of forest users with ecological requirements, further study is needed to investigate the root causes...

2017
Klaus Deininger Sara Savastano Fang Xia

While scholars long recognized the importance of land markets as a key driver of rural non-farm development and transformation in rural areas, evidence on the extent of their operation and the nature of participants remains limited. We use household data from 6 countries to show that there is great potential for such markets to increase productivity and equalize factor ratios. While rental mark...

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