868 Articles found
Soil Science Society of America (SSSA) Articles
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The ecologically optimum application of nitrogen in wheat season of rice–wheat cropping system
Because excessive application of N fertilizer for crop production leads to environmental pollution and low N utility efficiency, a better understanding of the effects of N application rates on crop yields and NO3–N leaching is required for ...
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Effect of nitrogen application on yield and quality of silage corn after forage legume-grass
Decomposition of forage legume-grass (FLG) sods after turnover will supply N to the next corn (Zea mays L.) crop. For optimum economic grain production typically a starter N application is sufficient. However, the impact of eliminating sidedress N ...
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Relationship between Phosphorus and Nitrogen Concentrations in Spring Wheat
Efficient management of P in crop production requires the development of tools to quantify the P status of plants. Our objectives were to establish the relationship between P and N concentrations of spring milling wheat (Triticum aestivum L.) during ...
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Sequence analysis of dssat to select optimum strategy of crop residue and nitrogen for sustainable rice-wheat rotation
Weather variability affects the production of most cropping systems, and rice (Oryza sativa L.)-wheat (Triticum aestivum L.) rotation is not an exception. Integrating weather forecasts with soil fertility management options is one way to combat the ...
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Modeling olive crop yield in andalusia, spain
Andalusia (southern Spain) is the largest olive (Olea europaea L.) oil producing region in the world. This study sought to identify the main factors influencing olive fruit production in this region, by modeling pollen release as an index of ...
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The profitability and risk of long-term cropping systems featuring different rotations and nitrogen rates
Yield comparisons do not provide the appropriate basis for decision-making regarding cropping systems. The dominant factor influencing the adoption of cropping systems is economics. The objective of this 15-yr study was to evaluate the long-term ...
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Assessment of pasture biomass with the normalized difference vegetation index from active ground-based sensors
Calculating forage availability is challenging for managers of grazing systems due to the spatial heterogeneity of swards. Remote sensing applications may help to overcome this problem through estimates of biomass made with reflectance data. The ...
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Forage pasture production, risk analysis, and the buffering capacity of triticale
Many livestock producers minimize input costs by relying solely on naturalized, mixed-species pasture, but expose themselves to risks associated with forage yields that fluctuate in response to variable environmental conditions. This study was ...
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Effect of implementing organic farming on chemical and biochemical properties of an irrigated loam soil
Conventional agriculture can lead to reduced soil organic matter and depletion in soil fertility. For that reason, Food and Agriculture Organization of the United Nations (FAO) recommends organic matter incorporation to soils to increase their ...
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Management practices to minimize tan spot in a continuous wheat rotation
In the central United States, practices that maintain residue in wheat (Tritricum aestivum L.) often lead to yield losses from tan spot (Pyrenophora tritici-repentis) infections. Tillage, fungicides, N fertility, and resistant varieties may reduce ...
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Tillage effects on water use and grain yield of winter wheat and green pea in rotation
Under water-limited conditions, increasing water use efficiency (WUE) is essential for successful crop production. A 7-yr study (1977–1982, and 1985) to evaluate tillage and tillage timing effects on soil water storage, crop water use, and grain ...
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No differences in decomposition rates observed between bacillus thuringiensis and non-bacillus thuringiensis corn residue incubated in the field
Recent speculation of slower residue decomposition for Bacillus thuringiensis (Bt) corn (Zea mays L.) hybrids compared with non-Bt corn hybrids has prompted investigative study. We evaluated the residue decomposition rates of Bt and non-Bt corn ...
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Winter wheat blends (mixtures) produce a yield advantage in north carolina
Seed mixtures, or blends, of small grain cultivars are unknown in eastern U.S. wheat production, where numerous diseases and abiotic stresses often reduce yield and quality. In 2004–2005 and 2005–2006, a field experiment was conducted at Kinston, ...
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History, achievements, and current status of genetic resources conservation
This paper has been written to look back at the early period of crop genetic resources conservation and inform readers of what has been achieved so far and what needs to be done in the future. The recognition of the value of crop genetic resources ...
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Soil nitrate leaching in silvopastures compared with open pasture and pine plantation
Wide acceptance of silvopasture as an alternative sustainable agricultural system in the southeastern United States will depend on an improved understanding of the tree-forage interactions and recognition of its environmental benefits. The objective ...
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Surface energy fluxes and evapotranspiration of a mango orchard grown in a semiarid environment
Data from field experiments conducted in the semiarid climatic conditions of northeast Brazil were used to investigate the energy flux relations and evapotranspiration (ET) of a mango (Mangifera indica L.) orchard. The Bowen ratio–energy balance ...
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Net biome productivity of irrigated and rainfed maize–soybean rotations: modeling vs. Measurements
Estimates of agricultural C sequestration require an understanding of how net ecosystem productivity (NEP) and net biome productivity (NBP) are affected by land use. Such estimates will most likely be made using mathematical models that have ...
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Aerial color infrared photography to optimize in-season nitrogen fertilizer recommendations in winter wheat
Remote sensing in the form of aerial color infrared (CIR) photography has been shown to be a useful tool for in-season N management in winter wheat (Triticum aestivum L.). The objectives of this study were (i) to develop a methodology for predicting ...
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Potential for using sunn hemp as a source of biomass and nitrogen for the piedmont and coastal plain regions of the southeastern usa
The tropical legume sunn hemp (Crotalaria juncea L.) could be a valuable green manure/cover crop for vegetable producers in the southeastern USA because of its rapid growth and large N2 fixing ability. Planting and termination date effects on ...
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Response of cultivars of race durango to continual dry bean versus rotational production systems
Continual dry bean (CB, Phaseolus vulgaris L.) production in the same field for 2 or more consecutive years is common worldwide. However, the effects on and performance of dry bean cultivars in the CB production system is not known. The objectives ...