Perennial Grasslands Are Essential for Long Term SOC Storage in the Mollisols of the North Central USA

Soil Carbon ◽  
2014 ◽  
pp. 281-288 ◽  
Author(s):  
Gregg R. Sanford
Keyword(s):  
North Central ◽  
The North ◽  
Central Usa

The Sydney Cyprus Survey Project: An Interdisciplinary Investigation of Long-Term Change in the North Central Troodos, Cyprus

1999 ◽  
Vol 26 (1) ◽  
pp. 19 ◽  
Author(s):  
Michael Given ◽  
A. Bernard Knapp ◽  
Nathan Meyer ◽  
Timothy E. Gregory ◽  
Vasiliki Kassianidou ◽  
...  
Keyword(s):  
North Central ◽  
The North ◽  
Term Change

Relating apparent electrical conductivity to soil properties across the north-central USA

2005 ◽  
Vol 46 (1-3) ◽  
pp. 263-283 ◽  
Author(s):  
K.A. Sudduth ◽  
N.R. Kitchen ◽  
W.J. Wiebold ◽  
W.D. Batchelor ◽  
G.A. Bollero ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Soil Properties ◽  
North Central ◽  
The North ◽  
Apparent Electrical Conductivity ◽  
Central Usa

Agricultural Drought in North-Central Mexico

2005 ◽  
Author(s):  
José Alfredo Rodríguez-Pineda ◽  
Lorrain Giddings
Keyword(s):  
Agricultural Land ◽  
Agricultural Drought ◽  
Natural Phenomenon ◽  
North Central ◽  
Water Policies ◽  
The North ◽  
Time Period ◽  
Northern Half ◽  
The Government

Drought is the most significant natural phenomenon that affects the agriculture of northern Mexico. The more drought-prone areas in Mexico fall in the northern half of the country, in the states of Chihuahua, Coahuila, Durango, Zacatecas, and Aguascalientes (figure 10.1). The north-central states form part of the Altiplanicie Mexicana and account for 30.7% of the national territory of 1,959,248 km2. This area is characterized by dry and semidry climates (Garcia, 1981) and recurrent drought periods. The climate of Mexico varies from very dry to subhumid. Very dry climate covers 21%, dry climate covers 28%, and temperate subhumid and hot subhumid climates prevail in 21% and 23% of the national territory, respectively. About 20 years ago, almost 75% of Mexico’s agricultural land was rainfed, and only 25% irrigated (Toledo et al., 1985), making the ratio of rainfed to irrigated area equal to 3. However, for the northern states this ratio was 3.5 during the 1990–98 period (table 10.1). Because of higher percentage of rain-fed agriculture, drought is a common phenomenon in this region, which has turned thousands of hectares of land into desert. Though the government has built dams, reservoirs, and other irrigation systems to alleviate drought effects, rain-fed agriculture (or dryland farming) remains the major form of cultivation in Mexico. In Mexico, there is no standard definition for agricultural drought. However, the Comisión Nacional del Agua (CNA; i.e., National Water Commission), which is a federal agency responsible for making water policies, has coined its own definition for drought. This agency determines whether a particular region has been affected by drought, by studying rainfall records collected from the national climatic network. The national climatic network is spread throughout the country and is managed by the Servicio Meteorológico Nacional (SMN; i.e., National Meteorological Services). The CNA determines, for a municipal region, if the rainfall is equal to or less than one standard deviation from the long-term mean over a time period of two or more consecutive months. If it is, then the secretary of state declares drought for the region.

Genetic diversity and phylogeny of strains of Clavibacter nebraskensis associated with recent and historic Goss's wilt epidemics in the north Central USA

2020 ◽  
Vol 69 (6) ◽  
pp. 990-1002
Author(s):  
Blake T. Webster ◽  
Rebecca D. Curland ◽  
Cory D. Hirsch ◽  
Ryan R. McNally ◽  
Dean K. Malvick ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
North Central ◽  
The North ◽  
Central Usa

Initiation Date and Nitrogen Rate for Stockpiling Smooth Bromegrass in the North-Central USA

2005 ◽  
Vol 97 (4) ◽  
pp. 1194-1201 ◽  
Author(s):  
Gregory J. Cuomo ◽  
Margot V. Rudstrom ◽  
Paul R. Peterson ◽  
Dennis G. Johnson ◽  
Av Singh ◽  
...  
Keyword(s):  
Smooth Bromegrass ◽  
Nitrogen Rate ◽  
North Central ◽  
The North ◽  
Central Usa

scholarly journals Comparative productivity of alternative cellulosic bioenergy cropping systems in the North Central USA

2016 ◽  
Vol 216 ◽  
pp. 344-355 ◽  
Author(s):  
Gregg R. Sanford ◽  
Lawrence G. Oates ◽  
Poonam Jasrotia ◽  
Kurt D. Thelen ◽  
G.Philip Robertson ◽  
...  
Keyword(s):  
Cropping Systems ◽  
North Central ◽  
The North ◽  
Cellulosic Bioenergy ◽  
Central Usa ◽  
Bioenergy Cropping Systems

scholarly journals Biology and Economics of Recommendations for Insecticide-Based Management of Soybean Aphid

2016 ◽  
Vol 17 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Robert L. Koch ◽  
Bruce D. Potter ◽  
Phillip A. Glogoza ◽  
Erin W. Hodgson ◽  
Christian H. Krupke ◽  
...  
Keyword(s):  
Insect Pest ◽  
Soybean Aphid ◽  
North Central ◽  
The North ◽  
Central United States ◽  
Glycine Max L ◽  
Short And Long Term ◽  
Aphis Glycines Matsumura

Soybean aphid, Aphis glycines Matsumura, remains the key insect pest of soybean, Glycine max (L.) Merrill, in the north-central United States. Management of this pest has relied primarily on scouting and application of foliar insecticides based on an economic threshold (ET) of 250 aphids per plant. This review explains why this ET remains valid for soybean aphid management, despite changes in crop value and input costs. In particular, we review how soybean aphid impacts soybean yield, the role of biology and economics in recommendations for soybean aphid management, and the short- and long-term consequences of inappropriately timed insecticide applications. Accepted for publication 13 December 2016.

Forage Yield and Quality of Six Annual Medicago Species in the North‐Central USA

1996 ◽  
Vol 88 (6) ◽  
pp. 955-960 ◽  
Author(s):  
Yanping Zhu ◽  
Craig C. Sheaffer ◽  
Donald K. Barnes
Keyword(s):  
Forage Yield ◽  
North Central ◽  
The North ◽  
Yield And Quality ◽  
Annual Medicago ◽  
Central Usa ◽  
Medicago Species
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