868 Articles found
Soil Science Society of America (SSSA) Articles
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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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Forage potential of intercropping barley with faba bean, lupin, or field pea
Annual cool-season grain legumes grown in mixtures with barley (Hordeum vulgare L.), may offer advantages over barley sole crops for forage production. Our objective was to evaluate the effects of intercropping ‘Snowbird’ tannin-free faba bean ...
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Yield, yield components, and forage nutritive value of alfalfa as affected by seeding rate under irrigated conditions
Persistence is a critical component of alfalfa (Medicago sativa L.) crop yield. Our objective was to determine the effect of seeding rate on alfalfa persistence, yield, and yield components and how they evolved over time in irrigated areas with long ...
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Variation in characteristics and imazamox tolerance of feral rye
Rye (Secale cereale L.) is a minor crop in America, with similarities to wheat (Triticum aestivum L.) in growth habit and distribution. However, feral rye has become a weed in wheat. Little is known about variation in feral rye morphological ...
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A simple spectral index using reflectance of 735 nm to assess nitrogen status of rice canopy
Spatial distribution of canopy N status is the primary information needed for precision management of N fertilizer. This study demonstrated the feasibility of a simple spectral index (SI) using the first derivative of canopy reflectance spectrum at ...
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Dietary cation–anion difference and tetany index of timothy forage fertilized with liquid swine manure
Incidence of metabolic disorders increases when dairy cows (Bos taurus) are fed forages that have a high dietary cation-anion difference (DCAD) (>250 mmolc kg–1 dry matter, DM) or high grass tetany (GT) index (>2.2), both associated with high forage ...
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Arrowleaf, crimson, rose, and subterranean clover growth with and without defoliation in the southeastern united states
Understanding the growth pattern of cool-season annual clovers is necessary to develop management practices that maximize forage production and identify compatible grass associations and farming systems. Plant density, light interception, shoot ...
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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 ...