Agronomy Journal

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Simulating Effects of Genes for Physiological Traits in a Process‐Oriented Crop Model
Agronomy Journal - Tập 88 Số 3 - Trang 416-422 - 1996
Jeffrey W. White, Gerrit Hoogenboom
AbstractRecent improvements in crop simulation techniques and in understanding of crop genetics suggest the possibility of integrating genetic information on physiological traits into crop simulation models. By using known genotypes, rather than empirically fitted cultivar‐specific coefficients, a simulation model should permit more explicit testing of hypotheses c...... hiện toàn bộ
Path Analysis of Heavy Metal Adsorption by Soil
Agronomy Journal - Tập 85 Số 5 - Trang 1054-1057 - 1993
Nicholas T. Basta, Dan J. Pantone, M. A. Tabatabai
AbstractPath analysis, a statistical technique that differentiates between correlation and causation, was used to describe heavy metal adsorption by soil. A path analysis model that evaluates the effect of soil pH, CEC, organic carbon content (OC), and clay content on adsorption of Cd, Cu, Ni, Pb, and Zn by soils from two long‐term cropping experiments in Sutherlan...... hiện toàn bộ
In Situ Nuclear Magnetic Resonance Imaging of Roots: Influence of Soil Type, Ferromagnetic Particle Content, and Soil Water1
Agronomy Journal - Tập 79 Số 6 - Trang 957-965 - 1987
H. H. Rogers, Paul A. Bottomley
AbstractThe paucity of root information combined with the difficulty in obtaining it make new approaches imperative. The observation of roots is essential to the understanding of plant growth and productivity. Proton (1H) nuclear magnetic resonance (NMR) imaging offers a noninvasive method for the study of both root morphology and function in s...... hiện toàn bộ
Source–Sink Capacity Responsible for Higher Maize Yield with Removal of Plastic Film
Agronomy Journal - Tập 105 Số 3 - Trang 591-598 - 2013
Lingduo Bu, Lin Zhu, Jianliang Liu, Shasha Luo, Xin‐ping Chen, Shiqing Li
Techniques based on the use of double ridges and furrows mulched with plastic film is very effective for improving water use efficiency and maize (Zea mays L.) yields in semiarid areas. Little is known, however, about the impact of removing the plastic film mulch during the reproductive stage (RS), i.e., during the July to September rainy season. We therefore per...... hiện toàn bộ
Legume and Mineral N Effects on Crop Yields in Several Crop Sequences in the Upper Mississippi Valley1
Agronomy Journal - Tập 73 Số 5 - Trang 885-890 - 1981
Jon O. Baldock, R. L. Higgs, W. H. Paulson, J. A. Jackobs, W. D. Shrader
AbstractThe total effect of legumes on subsequent crop yields may be divided into two categories: (i) the effect of the N that they supply, and (ii) the net effect of all other contributions. Knowing the size of these two effects, plus the N response of the subsequent crops, allows N fertilization to be optimized for decreased energy use and for reduced pollution p...... hiện toàn bộ
Microbial Biomass Turnover in Indian Subtropical Soils under Different Sugarcane Intercropping Systems
Agronomy Journal - Tập 98 Số 3 - Trang 698-704 - 2006
Archna Suman, Menhi Lal, A. K. Singh, Asha Gaur
Changes in soil organic C (Corg), total N (Nt), available nutrients, soil microbial biomass C (Cmic) and N (Nmic), and mineralizable C and N in the sugarcane (Saccharum officinarum L.) rhizosphere were evaluated under intensive sugarcane cropping systems with intercrops including ...... hiện toàn bộ
Rotation and Nitrogen Fertilization Effects on Changes in Soil Carbon and Nitrogen
Agronomy Journal - Tập 86 Số 2 - Trang 319-325 - 1994
Gary E. Varvel
AbstractLong‐term effects of cropping systems on soil properties, such as organic soil C and N levels, is necessary so more accurate projections can be made regarding the sequester and emission of CO2 by agricultural soils. This information can then be used to predict the effects of cropping systems on both soil degradation, maintenance, or imp...... hiện toàn bộ
Cover Crop Mixtures Do Not Use Water Differently than Single‐Species Plantings
Agronomy Journal - Tập 107 Số 3 - Trang 1025-1038 - 2015
D. G. Nielsen, Drew J. Lyon, Gary W. Hergert, Robert K. Higgins, Francisco J. Calderón, Merle F. Vigil
Recent recommendations advocating the use of cover crop mixtures instead of single‐species in semi‐arid environments require rigorous scientific studies. One of those stated benefits is greatly reduced water use by cover crops grown in mixtures. The objectives of this study were to characterize soil water extraction patterns and determine water use of cover crops grown in single‐species pl...... hiện toàn bộ
Choice of Summer Fallow Replacement Crops Impacts Subsequent Winter Wheat
Agronomy Journal - Tập 99 Số 2 - Trang 578-584 - 2007
Drew J. Lyon, D. G. Nielsen, Douglas G. Felter, Paul Burgener
Winter wheat (Triticum aestivum L.) is the foundation of dryland cropping systems in the Central Great Plains. The objective of this study was to quantify the effects of four short‐season spring‐planted crops used to replace summer fallow on the subsequent winter wheat crop. Wheat was seeded into four crop stubbles [spring triticale (×Triticosecale... hiện toàn bộ
Legume Green Fallow Effect on Soil Water Content at Wheat Planting and Wheat Yield
Agronomy Journal - Tập 97 Số 3 - Trang 684-689 - 2005
D. G. Nielsen, Merle F. Vigil
Growing a legume cover crop in place of fallow in a winter wheat (Triticum aestivum L.)–fallow system can provide protection against erosion while adding N to the soil. However, water use by legumes may reduce subsequent wheat yield. This study was conducted to quantify the effect of varying legume termination dates on available soil water content at wheat planti...... hiện toàn bộ
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