Results 261 to 270 of about 870,191 (308)
Some of the next articles are maybe not open access.
Science, 2019
Synthetic photorespiration bypass increases crop ...
Eisenhut, Marion, Weber, Andreas P. M.
openaire +2 more sources
Synthetic photorespiration bypass increases crop ...
Eisenhut, Marion, Weber, Andreas P. M.
openaire +2 more sources
Plant Biology, 2018
AbstractThirty crop species provide 90% of our food, most of which display severe yield losses under moderate salinity. Securing and augmenting agricultural yield in times of global warming and population increase is urgent and should, aside from ameliorating saline soils, include attempts to increase crop plant salt tolerance.
C. Zörb, C.‐M. Geilfus, K.‐J. Dietz
openaire +2 more sources
AbstractThirty crop species provide 90% of our food, most of which display severe yield losses under moderate salinity. Securing and augmenting agricultural yield in times of global warming and population increase is urgent and should, aside from ameliorating saline soils, include attempts to increase crop plant salt tolerance.
C. Zörb, C.‐M. Geilfus, K.‐J. Dietz
openaire +2 more sources
2018
Abstract This chapter focuses on the various processes that determine the growth and yield of tomatoes, with emphasis on the influence of environmental factors and crop management, such as light, carbon dioxide, temperature, humidity, salinity, plant density and leaf and fruit pruning.
Heuvelink, E., Li, T., Dorais, M.
openaire +2 more sources
Abstract This chapter focuses on the various processes that determine the growth and yield of tomatoes, with emphasis on the influence of environmental factors and crop management, such as light, carbon dioxide, temperature, humidity, salinity, plant density and leaf and fruit pruning.
Heuvelink, E., Li, T., Dorais, M.
openaire +2 more sources
2005
AbstractThe processes that determine tomato crop growth and yield are considered in detail, with emphasis on the influence of environmental factors such as light, CO2, temperature, humidity and salinity. The main topics are as follows: Biomass production (leaf area and light interception, leaf and crop photosynthesis); Crop and fruit growth; Biomass ...
Heuvelink, E., Dorais, M.
openaire +1 more source
AbstractThe processes that determine tomato crop growth and yield are considered in detail, with emphasis on the influence of environmental factors such as light, CO2, temperature, humidity and salinity. The main topics are as follows: Biomass production (leaf area and light interception, leaf and crop photosynthesis); Crop and fruit growth; Biomass ...
Heuvelink, E., Dorais, M.
openaire +1 more source
Geography of crop yield skewness
Agricultural Economics, 2015AbstractAnalysis of crop yield distributions provides insights into better understanding how natural resources shape agricultural productivity. This study seeks to provide a rigorous theoretical and empirical understanding of the effects of exogenous geographic and climatic factors on the first three moments of crop yields with focus on the third ...
Du, Xiaodong +3 more
openaire +2 more sources
Annual Review of Phytopathology, 1989
Ozone (03) in the atmosphere plays a dual role in its effects on the earth's environment. In the stratosphere, it performs a critical task of absorbing some of the sun's ultraviolet radiation. Paradoxically, 03 in the troposphere is a component of photochemical air pollution and causes more damage to vegeta tion than all other pollutants combined.
openaire +1 more source
Ozone (03) in the atmosphere plays a dual role in its effects on the earth's environment. In the stratosphere, it performs a critical task of absorbing some of the sun's ultraviolet radiation. Paradoxically, 03 in the troposphere is a component of photochemical air pollution and causes more damage to vegeta tion than all other pollutants combined.
openaire +1 more source
Land Economics, 2020
How does the historical legacy of agriculture affect democratic traditions in contemporary societies? This paper provides empirical evidence that inherent crop yield and democracy exhibit an inverted U-shaped relationship. This finding is supported by cross-country data from up to 147 countries, 186 pre-colonial societies, and the U.S. states.
James B. Ang +2 more
openaire +1 more source
How does the historical legacy of agriculture affect democratic traditions in contemporary societies? This paper provides empirical evidence that inherent crop yield and democracy exhibit an inverted U-shaped relationship. This finding is supported by cross-country data from up to 147 countries, 186 pre-colonial societies, and the U.S. states.
James B. Ang +2 more
openaire +1 more source
Does Crop Insurance Affect Crop Yields?
2007We use administrative data from the Federal crop insurance program to examine how yield distributions change as farmers cycle into and out of the program. We are able to do this by linking many years of crop insurance data by individual farm conditioning observed yields on the particular county and year in which they are observed.
Roberts, Michael J. +5 more
openaire +3 more sources
Optimum Area Yield Crop Insurance
American Journal of Agricultural Economics, 1999AbstractThis article considers the problem of the optimal design of crop insurance when the indemnity is based upon the aggregate yield of a surrounding area. The optimal area yield crop insurance contract depends on the individual beta coefficient which measures the sensitivity of farm yield to area yield.
openaire +3 more sources
Area‐Yield Crop Insurance Reconsidered
American Journal of Agricultural Economics, 1991AbstractOne of the more promising proposals for reforming the federal crop insurance program calls for both premium rates and indemnities to be based not on the producer's individual yield but rather on the aggregate yield of a surrounding area.
openaire +2 more sources