Query : History of minnesota agriculture
Results 1 - 5 of 5
Changes in parentage and genetic diversity of widely used maize hybrids grown in the Northern United States and France from 1930 to the present [Zea mays L.]
Smith, J.S.C. et al. 
Studies of cultivated varieties historically used in agriculture provide measures of genetic gain and help to identify the morphological features, physiological characteristics, and ultimately, the germplasm which contributes those gains. The extent and manner in which genetic diversity is used determines the amount and sustainability of productivity gains. France and the Northern Corn Belt of ...
SUBJECT: iowa; ancestry; germplasm; ascendance; storia
POSTED TO: Maydica (Italy) [0025-6153]
(From extensive to intensive grassland use and back. Intensivation of grassland use from about 1920 to 1960).
Kuehbauch W. 
SUBJECT: intensive farming; manejo de praderas; plant communities; communaute vegetale; rendement des cultures
POSTED TO: LOELF Mitteilungen
Luby, J.J. et al. 
SUBJECT: fraise; reproduccion sexual; genetic resources; ribes; recursos geneticos
POSTED TO: Aspects of Applied Biology (United Kingdom)
Impact of agriculture and urban development on the community structure of wetland birds in East Central Minnesota
von Behren, Christa R [2007-05-01]
Wetlands are one of the fastest disappearing habitats in America. Many wetlands are also being altered due to the effects of various types of land use. Because wetlands provide important habitat for many types of birds, these species can be affected by changes in wetlands due to land use. The impacts of several wetland features, including wetland size, proximity to other wetlands, and vegetati ...
SUBJECT: agriculture; wetland birds; urban development; landscape ecology
Olson, Kent D. et al. 
Inter-firm differences in economic efficiency are major factors explaining differences in firm survival and growth and changes in industry structure. Thus, factors explaining differences in efficiency are of major interest to many involved in or affected by the industry. This study was undertaken to improve our understanding of the inter-farm differences in farm household efficiency in utilizi ...
SUBJECT: productivity analysis