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You searched for: Journal name Agronomy journal Remove constraint Journal name: Agronomy journal Publication year rev 7985-2015 Remove constraint Publication year rev: 7985-2015 Source 2015 v.107 no.4 Remove constraint Source: 2015 v.107 no.4
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1. Achieving Water Security in Agriculture: The Human Factor

Author:
Lois Wright Morton
Source:
Agronomy journal 2015 v.107 no.4 pp. 1557-1560
ISSN:
0002-1962
Subject:
agronomy; citizen participation; decision making; ecosystems; humans; hydrologic cycle; land use; social structure; society; soil science; water quality; water security; water supply
Abstract:
... It is widely recognized that achieving water security will take substantive investments in hydrology, engineering, soil science, agronomy, and a wide variety of physical and natural sciences and technologies. Less understood is the human aspect, the social science of beliefs, values, human perceptions and decision-making, social relationships, and social organization that intentionally and uninten ...
DOI:
10.2134/agronj14.0039

2. Algorithm for Variable-Rate Nitrogen Application in Sugarcane Based on Active Crop Canopy Sensor

Author:
Lucas R. Amaral; José P. Molin; James S. Schepers
Source:
Agronomy journal 2015 v.107 no.4 pp. 1513-1523
ISSN:
0002-1962
Subject:
Saccharum; agronomy; algorithms; biomass; canopy; nitrogen; plant density; soil; sugarcane; Brazil
Abstract:
... Nitrogen fertilization is challenging for sugarcane (Saccharum spp.) producers due to its complex interaction with the crop and soil. Thus, the main goal of this study was to develop a feasible approach to guide variable-rate N application in sugarcane based on canopy sensor readings. This study was conducted for 5 yr. Several plot and strip N-rate experiments were conducted under a wide range of ...
DOI:
10.2134/agronj14.0494

3. Anhydrous Ammonia Timing and Rate Effects on Maize Nitrogen Use Efficiencies

Author:
Péter Kovács; George E. Van Scoyoc; Thomas A. Doerge; James J. Camberato; Tony J. Vyn
Source:
Agronomy journal 2015 v.107 no.4 pp. 1205-1214
ISSN:
0002-1962
Subject:
Zea mays; anhydrous ammonia; corn; developmental stages; drought; equipment; grain yield; nutrient use efficiency; planting
Abstract:
... Current guidance and equipment technologies permit anhydrous ammonia (NH₃) to be confidently placed parallel to crop rows in both before- and after-planting situations at shallower depths than traditional applications. Field studies from 2010 to 2012 investigated the effects of pre-plant vs. side-dress NH₃ at four N rates (0, 90, 145, and 202 kg N ha–¹) on maize (Zea mays L.) grain yield (GY), N r ...
DOI:
10.2134/agronj14.0350

4. Biomass Quality of Brassica Oilseed Crops in Response to Sulfur Fertilization

Author:
Krzysztof J. Jankowski; Wojciech S. Budzyński; Łukasz Kijewski; Tadeusz Zając
Source:
Agronomy journal 2015 v.107 no.4 pp. 1377-1391
ISSN:
0002-1962
Subject:
Brassica juncea; Brassica napus; Sinapis alba subsp. alba; biomass; chemical analysis; crops; fertilizer application; field experimentation; glucosinolates; oilseed crops; rapeseed; root residues; seed yield; seeds; soil; spring; straw; sulfur; sulfur fertilizers; winter; Poland
Abstract:
... Rapeseed [Brassica napus (L.)], white mustard [Sinapis alba (L.)], and Indian mustard [Brassica juncea (L.) Czern. et Coss] belong to the family Brassicaceae. These crop species synthesize substantial amounts of fat, protein, and glucosinolates (GLS). Brassica species can differ in their concentrations of fat, protein, and GLS in response to S fertilization. Plant material for chemical analyses wa ...
DOI:
10.2134/agronj14.0386

5. Blue Water Demand for Sustainable Intensification

Author:
Neil C. Hansen
Source:
Agronomy journal 2015 v.107 no.4 pp. 1539-1543
ISSN:
0002-1962
Subject:
agronomy; arid lands; diagnostic techniques; groundwater; irrigation; irrigation water; issues and policy; sustainable agricultural intensification; Africa; Asia; North America
Abstract:
... The agricultural challenge of meeting global food demand requires an increase in the level of agricultural water productivity and some increases in global water use. But many arid or semiarid agricultural regions of the world are facing declining water availability for irrigation. Examples of declining groundwater availability are seen throughout arid and semiarid areas of North America, Africa, a ...
DOI:
10.2134/agronj14.0138

6. Clustering of Environmental Parameters Discriminates Drought and Heat Stress Bread Wheat Trials

Author:
Bruno Bouffier; Jeremy Derory; Alain Murigneux; Matthew Reynolds; Jacques Le Gouis
Source:
Agronomy journal 2015 v.107 no.4 pp. 1489-1503
ISSN:
0002-1962
Subject:
Triticum aestivum; cluster analysis; drought; environmental factors; genotype-environment interaction; heat; heat stress; irrigated conditions; irrigation; methodology; principal component analysis; variance; wheat; Mexico
Abstract:
... Wheat (Triticum aestivum L.) is the most widely cultivated crop worldwide and faces a wide range of stresses. To make effective crop improvement decisions, environmental characterization is of paramount importance. This study presents a new methodology for characterizing the environment that enables replacing the conventional arbitrary classification of the environment by a series of environmental ...
DOI:
10.2134/agronj14.0452

7. Comparison of Low-Cost Methods for Measuring Ammonia Volatilization

Author:
Francirose Shigaki; Curtis J. Dell
Source:
Agronomy journal 2015 v.107 no.4 pp. 1392-1400
ISSN:
0002-1962
Subject:
agronomy; ammonia; crop production; fertilizer application; grasses; nitrogen fertilizers; soil; urea; volatilization
Abstract:
... Nitrogen fertilizer use to improve crop production is increasing worldwide, and subsequent N losses via NH₃ emissions generate undesirable economic and environmental consequences. Thus, low cost and practical methods to quantify NH₃ emissions are essential for the development of management practices that minimize environmental impacts. The objective of this study was to compare different methods t ...
DOI:
10.2134/agronj14.0431

8. A Comparison of Soil Properties after Five Years of No-Till and Strip-Till

Author:
Fabián G. Fernández; Brad A. Sorensen; Maria B. Villamil
Source:
Agronomy journal 2015 v.107 no.4 pp. 1339-1346
ISSN:
0002-1962
Subject:
Glycine max; Zea mays; aggregate stability; agronomy; bulk density; corn; infiltration rate; no-tillage; nutrient uptake; resistance to penetration; soil organic matter; soybeans; strip tillage; yields; Illinois
Abstract:
... Recent research in Illinois suggests that yield increase in corn (Zea mays L.) and soybean [Glycine max. (L.) Merr.] with strip-till (ST) vs. no-till (NT) could be explained by differences in root characteristics and enhanced nutrient uptake in ST. However, the effect of these tillage practices on soil properties remains unclear. Our objective was to evaluate the impact of NT and ST on soil organi ...
DOI:
10.2134/agronj14.0549

9. Dry Soil Planting of Maize for Variable Onset of Rainfall in Ethiopia

Author:
Feyera M. Liben; Charles S. Wortmann; Kindie Tesfaye
Source:
Agronomy journal 2015 v.107 no.4 pp. 1618-1625
ISSN:
0002-1962
Subject:
Vertisols; Zea mays; agronomy; corn; cultivars; rain; risk reduction; soil water deficit; Ethiopia
Abstract:
... Farmers in water-limited environments of the Central Rift Valley of Ethiopia (CRVE) practice dry soil planting of maize (Zea mays L.) on Vertisols in response to variable onset of rainfall and because of the difficulties of working on these soils when wet. However, little information is available for improving this practice. Therefore the effect of dry soil planting depth for two maize cultivars w ...
DOI:
10.2134/agronj14.0621

10. Effect of Three Tillage Depths on Sugarbeet Response and Soil Penetrability Resistance

Author:
Jalal D. Jabro; William M. Iversen; William Bart Stevens; Robert G. Evans; Maysoon M. Mikha; Brett L. Allen
Source:
Agronomy journal 2015 v.107 no.4 pp. 1481-1488
ISSN:
0002-1962
Subject:
Beta vulgaris; cold; crop yield; deep tillage; manual harvesting; no-tillage; roots; sandy loam soils; soil penetration resistance; soil water; spring; sucrose; sugar beet; weather
Abstract:
... Tillage can alter soil properties and affect crop yield and quality. A 4-yr study was conducted on a Lihen sandy loam soil loam (sandy, mixed, frigid Entic Haplustoll) to evaluate the effect of tillage depth on sugarbeet (Beta vulgaris L.) root yield, root quality, and soil penetration resistance (PR). Tillage treatments consisted of no-tillage (NT), shallow tillage (ST), and deep tillage (DT). So ...
Handle:
10113/61038
DOI:
10.2134/agronj14.0561

11. Heterotic Grouping and the Heterotic Pattern among Chinese Rapeseed (Brassica napus L.) Accessions

Author:
H. Y. Tian; S. A. Channa; S. W. Hu
Source:
Agronomy journal 2015 v.107 no.4 pp. 1321-1330
ISSN:
0002-1962
Subject:
Brassica napus; agronomy; commercialization; genetic markers; heterosis; hybrids; inbreeding; rapeseed; China
Abstract:
... Heterotic groups and patterns are extremely important in hybrid breeding. Nine elite inbreds widely used in Chinese rapeseed hybrid breeding programs were crossed in a diallel mating design to develop 36 hybrids. These hybrids and their parents were evaluated for two successive years in northern China. Five different methods, which were based on specific combining ability (SCA) effects, SCA-Yang’s ...
DOI:
10.2134/agronj14.0557

12. Improving Productivity of Managed Potato Cropping Systems in Eastern Canada: Crop Rotation and Nitrogen Source Effects

Author:
Judith Nyiraneza; Rick D. Peters; Vernon A. Rodd; Mark G. Grimmett; Yefang Jiang
Source:
Agronomy journal 2015 v.107 no.4 pp. 1447-1457
ISSN:
0002-1962
Subject:
Hordeum vulgare; Solanum tuberosum; Sorghum bicolor subsp. drummondii; Trifolium pratense; agronomy; crop rotation; green manures; liquids; lobsters; nitrates; nitrogen; nitrogen fertilizers; particulate organic matter; pig manure; potatoes; slurries; soil; soil organic matter; total nitrogen; winter; Prince Edward Island
Abstract:
... Strategies to improve sustainability are important in intensively managed potato (Solanum tuberosum L.) systems. This study has assessed rotation systems and N sources to mitigate potato yield and soil organic matter decline in Prince Edward Island (PEI), Canada. Three-year potato rotation systems were initiated in 2006: continuous potato (CP); potato–barley (Hordeum vulgare L.) underseeded with r ...
DOI:
10.2134/agronj14.0430

13. Management of Manure Nitrogen Using Cover Crops

Author:
Malinda S. Thilakarathna; Stephanie Serran; John Lauzon; Ken Janovicek; Bill Deen
Source:
Agronomy journal 2015 v.107 no.4 pp. 1595-10607
ISSN:
0002-1962
Subject:
Lolium perenne; Raphanus sativus; Trifolium pratense; Zea mays; agronomy; ammonia; biomass; corn; cover crops; grain yield; liquids; manure spreading; nitrogen; oats; oilseeds; pig manure; radishes; soil minerals; Ontario
Abstract:
... The experiment was conducted to determine whether cover crops reduce N losses of fall-applied liquid hog manure and whether sequestered N by cover crops is “transferred” to subsequent corn (Zea mays L.). Two locations (Elora and St. Mary’s) in southern Ontario from 2003–2004 were used consisting of six cover crop treatments (red clover [RC] [Trifolium pratense L.] fall-killed, RC spring-killed, oa ...
DOI:
10.2134/agronj14.0634

14. Managing Green Water in Dryland Agriculture

Author:
B. A. Stewart; G. A. Peterson
Source:
Agronomy journal 2015 v.107 no.4 pp. 1544-1553
ISSN:
0002-1962
Subject:
Zea mays; arid lands; arid zones; biomass production; corn; dry environmental conditions; evaporation; grain crops; grain yield; growing season; harvest index; soil; transpiration; vegetation
Abstract:
... Green water is the portion of precipitation that is stored in the soil, or temporarily stays on top of the soil or vegetation during the growing season. Eventually, part of it is used by plants as transpiration and the amount of water transpired is directly related to biomass production. For grain crops, a portion of the biomass is grain, and the ratio of grain to biomass is the harvest index. The ...
DOI:
10.2134/agronj14.0038

15. Nitrogen Fertilization Strategies Suitable to Achieve the Quality Requirements of Wheat for Biscuit Production

Author:
Massimo Blandino; Federico Marinaccio; Patrizia Vaccino; Amedeo Reyneri
Source:
Agronomy journal 2015 v.107 no.4 pp. 1584-1594
ISSN:
0002-1962
Subject:
Triticum aestivum; ammonium nitrate; biscuits; cultivars; fertilizer application; field experimentation; flour; grain protein; grain yield; growing season; leaves; nitrogen; nitrogen fertilizers; protein content; rheological properties; slow-release fertilizers; split application; storage proteins; tillering; wheat; Italy
Abstract:
... A low grain protein content (GPC) and flour strength (W) are desirable traits for wheat (Triticum aestivum L.) for biscuit production. Nitrogen fertilization is the main factor that affects storage proteins. The aim of this study was to compare the effect of different commonly applied N fertilization strategies on the quality requirements of common wheat intended for biscuits production. Field exp ...
DOI:
10.2134/agronj14.0627

16. Nitrogen Rate, Cover Crop, and Tillage Practice Alter Soil Chemical Properties

Author:
Edwin L. Ritchey; Donald D. Tyler; Michael E. Essington; Michael D. Mullen; Arnold M. Saxton
Source:
Agronomy journal 2015 v.107 no.4 pp. 1259-1268
ISSN:
0002-1962
Subject:
Gossypium hirsutum; Hapludalfs; Vicia villosa; acidity; agronomy; cotton; cover crops; crop production; discing; exchangeable aluminum; nitrogen; no-tillage; silt loam soils; soil organic carbon; soil pH
Abstract:
... Long-term management practices can influence many physical and chemical soil properties. This study investigated the influence of 14 yr of continuous cotton (Gossypium hirsutum L.) management systems on soil pH, soil organic C (SOC), and exchangeable cations. Management practices consisted of varying N rate, tillage (no-tillage [NT] or disk tillage [DT]), and cover crop on a Lexington silt loam so ...
DOI:
10.2134/agronj14.0226

17. Pollen Thermotolerance of Upland Cotton Related to Anther Structure and HSP Expression

Author:
Guicheng Song; Chenliang Jiang; Xiaoyang Ge; Quanzhan Chen; Canming Tang
Source:
Agronomy journal 2015 v.107 no.4 pp. 1269-1279
ISSN:
0002-1962
Subject:
Gossypium hirsutum; cultivars; deformation; endoplasmic reticulum; gene expression; gene expression regulation; genes; heat shock proteins; heat stress; heat tolerance; heat treatment; mitochondria; pollen; pollen germination; screening; starch granules; temperature; thermosensitivity; ultrastructure; vacuoles
Abstract:
... High temperature stress influences pollen grains development in upland cotton (Gossypium hirsutum L.) anthers, resulting in anthers with an abnormal structure and pollen grains with a low germination rate. To examine the thermotolerance mechanisms of pollen grains in upland cotton, we observed pollen germination rates, pollen grain ultrastructure, anther structure, and the expression of heat shock ...
DOI:
10.2134/agronj14.0458

18. Processing Snap Bean Variety Responses to Applied Nitrogen and Irrigation in the North Central United States

Author:
Yi Wang; Matthew D. Ruark; Amanda J. Gevens; Don T. Caine; Amanda L. Raster; Nicholas J. Goeser; Alvin J. Bussan
Source:
Agronomy journal 2015 v.107 no.4 pp. 1401-1410
ISSN:
0002-1962
Subject:
Phaseolus vulgaris; agronomic traits; fertilizer application; green beans; harvest index; high-yielding varieties; irrigation management; nitrogen; nitrogen fertilizers; nodulation; sandy soils; starter fertilizers; water stress; Wisconsin
Abstract:
... Irrigated processing snap bean (Phaseolus vulgaris L.) production in Wisconsin, mostly in the central sands region, ranks first in both yield and harvested hectarage in the U.S. However, there is little information assessing N need across processing snap bean varieties under different irrigation strategies on sandy soils. The objective of this study was to determine the effects of N rate and irrig ...
DOI:
10.2134/agronj14.0406

19. Radiation Interception and Use Efficiency Contributes to Higher Yields of Newer Maize Hybrids in Northeast China

Author:
Jin Zhao; Xiaoguang Yang; Xiaomao Lin; Gretchen F. Sassenrath; Shuwei Dai; Shuo Lv; Xiaochao Chen; Fanjun Chen; Guohua Mi
Source:
Agronomy journal 2015 v.107 no.4 pp. 1473-1480
ISSN:
0002-1962
Subject:
Zea mays; corn; dry matter accumulation; grain yield; harvest index; hybrids; leaves; photosynthesis; photosynthetically active radiation; radiation use efficiency; solar radiation; China
Abstract:
... A significant trend of decreasing solar radiation has been observed in Northeast China over the past six decades. Such a decline in solar radiation could negatively impact maize (Zea mays L.) production. The improved cultivated hybrids may have adapted to these changes in solar radiation. In this study, four commonly cultivated maize hybrids in Northeast China were selected for a 2-yr field study. ...
DOI:
10.2134/agronj14.0510

20. Stocking Rate and Nitrogen Fertilization Affect Root Decomposition of Elephantgrass

Author:
Hiran Marcelo Siqueira da Silva; José Carlos Batista Dubeux; Maria Lúcia Silveira; Erinaldo Viana de Freitas; Mércia Virginia Ferreira dos Santos; Mário de Andrade Lira
Source:
Agronomy journal 2015 v.107 no.4 pp. 1331-1338
ISSN:
0002-1962
Subject:
Cenchrus purpureus; agronomy; animal production; animals; biomass; body weight; carbon dioxide; chemical composition; detergents; forage; grasslands; models; nitrogen; pasture management; plant growth
Abstract:
... Roots are an important component controlling grassland sustainability. They can act as a C sink of atmospheric CO₂ and supply essential nutrients for plant growth. Pasture management strategies intended to increase forage and animal production can also affect root biomass, root composition, and root decomposition. This 2-yr study evaluated the effects of N fertilization and stocking rate (SR) on r ...
DOI:
10.2134/agronj14.0618