Effects of Fertilization on A Little Bluestem Community

Reardon, Patrick O.; Huss, Donald L.

doi:10.2307/3895488

Cited by 8 publications

(7 citation statements)

References 5 publications

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“…A number of previous investigations have been concerned with fertilizing species that are important on the tallgrass prairie, such as little bluestem, Schizachyrium scoparium (White 1961, Dickinson 1964, Nixon and McMillan 1964, Reardon and Huss 1965, van Amburg and Dodd 1970, Rao et al 1973, Senter 1975, Waller et al 1975. In other instances, fertilizers have been added to the prairie and responses have been measured in terms of yield (Gay and Dwyer 1965, McMurphy 1970, Owensby et al 1970, Hyde and Owensby 1973, Dodd and Lauenroth 1979, species com-positional changes (Huffine and Elder 1960, Owensby eta!.…”

Section: Introductionmentioning

confidence: 99%

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Risser¹,

Parton²

1982

Ecology

123

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Nitrogen cycling in tallgrass prairie was studied by using nitrogen content and concentration data for various ecosystem components on grazed and ungrazed tallgrass prairie in northeast Oklahoma. The seasonal dynamics of N in various plant parts was described, and the annual flow of N among different compartments was calculated. A simulation model was used to study the effect of grazing, fertilization, irrigation, and fire on nitrogen cycling. The results show that grazing, fertilization, and irrigation increase the nitrogen cycling rates. Annual spring fires reduce plant uptake and mineralization of N from plant parts, while mineralization of N from organic matter is increased.

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Section: Introductionmentioning

confidence: 99%

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Risser¹,

Parton²

1982

Ecology

123

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“…In monoculture, increased levels of nitrogen did not affect the growth rate of S. scoparium [51]. Other studies indicated that added nitrogen increased the dry mass of S. scoparium [59]; and there is a suggestion that the response of S. scoparium to soil nitrogen may be water dependent [60]. In the current study, we found that increased soil depth (volume and concomitantly the amount or availability of soil resources) increased the dry mass of S. scoparium in monoculture from 20 g·plant −1 in 30 cm deep soil to 48 g· plant −1 in the deepest soil tested.…”

Section: Discussionmentioning

confidence: 92%

Soil Depth and Changes in Dry Mass and Competitive Intensity of Two C<sub>4</sub> Grasses

Bush¹,

Auken²

2014

AJPS

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The presence of grassland biomes and species cannot be predicted by examining bottom up causes such as precipitation and temperature. Top down causes including herbivory and fire seem to be major controlling aspects with other factors secondary. We examined soil depth and competitive ability of two North American C 4 grasses in a greenhouse experiment. Changes in dry mass were determined and competitive intensity was calculated for both species. Species were grown separately or together in pots 30, 90, or 180 cm deep. When grown in monoculture, Schizachyrium scoparium total and belowground dry mass increased from the 30 to 90 cm depth, with no further significant increase from 90 to 180 cm. Aboveground dry mass did not increase significantly with depth. Total dry mass of Buchloe dactyloides increased significantly with depth when grown in monoculture. Aboveground dry mass increased from 30 to 90 cm depth but not from 90 to 180 cm. Belowground dry mass of B. dactyloides did not increase significantly with depth. In 180 cm pots, 53% of S. scoparium root dry mass was in the top 30 cm; 74% of B. dactyloides root dry mass was in the top 30 cm. Roots of B. dactyloides were not found deeper than 90 cm. Aboveground dry mass of S. scoparium was not different in mixture or monoculture at any depth. Buchloe dactyloides aboveground dry mass in mixture was significantly lower than monoculture at the 30 cm depth, but not at 90 or 180 cm. The greatest competitive intensity was in the shallow soil pots. Soil depth could partially explain mosaics found in C 4 grasslands where both species were found together with S. scoparium on deeper soils and B. dactyloides on shallower soils.

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“…In monoculture, increased levels of nitrogen did not affect the growth rate of S. scoparium (see Wilson and Tilman, 2002). Other studies indicated that nitrogen did increase the dry mass of S. scoparium (Kalmbacher et al, 1993); and there is a suggestion that the response of S. scoparium to soil nitrogen may be dependent on water availability (Reardon and Huss, 1965). In the current study, we found that increased soil nutrients increased the dry mass of S. scoparium in monoculture from 1 g plant À1 at low soil resources to 3.5 g plant À1 at high soil resources.…”

Section: Discussionmentioning

confidence: 98%

Competition between Schizachyrium scoparium and Buchloe dactyloides: The role of soil nutrients

Bush

Auken

2010

Journal of Arid Environments

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Effects of Fertilization on A Little Bluestem Community

Cited by 8 publications

References 5 publications

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Soil Depth and Changes in Dry Mass and Competitive Intensity of Two C<sub>4</sub> Grasses

Competition between Schizachyrium scoparium and Buchloe dactyloides: The role of soil nutrients

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Effects of Fertilization on A Little Bluestem Community

Cited by 8 publications

References 5 publications

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Ecosystem Analysis of the Tallgrass Prairie: Nitrogen Cycle

Soil Depth and Changes in Dry Mass and Competitive Intensity of Two C&lt;sub&gt;4&lt;/sub&gt; Grasses

Competition between Schizachyrium scoparium and Buchloe dactyloides: The role of soil nutrients

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Soil Depth and Changes in Dry Mass and Competitive Intensity of Two C<sub>4</sub> Grasses