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1. Studies on the growth of alfalfa and some perennial grasses

Author:
Albert, W.B.
Source:
Agronomy journal 1927 v.19 no.7 pp. 624-653
ISSN:
0002-1962
Subject:
perennials,   etc   ; Medicago sativa; grasses; carbohydrates; nitrogen; roots; plant development; Agrostis gigantea;     Show all 8 Subjects
Abstract:
... Grimm alfalfa was much more resistant to winterkilling than was common alfalfa, especially on plats where the fall growth was removed and on the plats cut at immature stages. The protection afforded to alfalfa plants by even small amounts of late fall top growth has a pronounced influence toward preventing winterkilling. In the first year of cutting the largest yields of hay were obtained from pla ...
DOI:
10.2134/agronj1927.00021962001900070007x

2. Seasonal production of grasses and legumes at Beltsville, Maryland, in 1931

Author:
Vinall, H.N.; Hein, M.A.
Source:
Agronomy journal 1933 v.25 no.9 pp. 588-594
ISSN:
0002-1962
Subject:
perennials,   etc   ; grasses; forage legumes; crop yield; Poaceae; Fabaceae; seasonal growth; seasonal variation; rain; phosphorus fertilizers; potassium fertilizers; silt loam soils; steers; liveweight gain; Maryland;     Show all 15 Subjects
Abstract:
... The data presented were obtained from plats on Sassafras silt loam at Beltsville, Md., seeded in September, 1928, to a pasture mixture and to each of the important pasture grasses and legumes. The plats devoted to the pasture mixture were in duplicate while all others were single plats. Cuttings were made with a lawn mower at intervals throughout the season whenever the growth was sufficient. All ...
DOI:
10.2134/agronj1933.00021962002500090005x

3. Some Vegetation and Sil Characteristics of Mountain Grasslands in Central Idaho

Author:
Mueggler, W. F.; Harris, C. A.
Source:
Ecology 1969 v.50 no.4 pp. 671-678
ISSN:
0012-9658
Subject:
perennials,   etc   ; Cyperaceae; annuals; forage; forbs; grasses; grasslands; shrubs; soil; water holding capacity; Idaho;     Show all 11 Subjects
Abstract:
... Vegetation and soils were evaluated on 23 relatively undisturbed grasslands scattered throughout the mountainous region of central Idaho. Analyses by ordination and cluster techniques suggest existence of at least two classifiable communities; (1) the Agropyron—Melica community, which includes an abundance of native annuals and relatively few perennial species; and (2) the Festuca—Agropyron—Antenn ...
DOI:
10.2307/1936258

4. Assimilate distribution in Poa annua L

Author:
Ong, C.K.; Marshall, C.
Source:
Annals of botany 1975 v.39 no.3 pp. 413-421
ISSN:
0305-7364
Subject:
perennials,   etc   ; Poa annua; carbon; filling period; flowering; grains; grasses; leaves; ripening; roots; tillers;     Show all 11 Subjects
Abstract:
... The carbon economy of a flowering tiller of Poa annua L. has been examined over the period from inflorescence emergence to grain shedding. The total import of 14C by the inflorescence reached a maximum at late grain filling but the relative import of assimilate was greatest 14 days after its appearance and represented 20–25 per cent of that assimilated by the inflorescence itself. The inflorescenc ...
DOI:
10.1093/oxfordjournals.aob.a084955

5. Planting Corn in Sod and Small Grain Residues with Minimum Tillage

Author:
Robertson, W. K.; Lundy, H. W.; Prine, G. M.; Currey, W. L.
Source:
Agronomy journal 1976 v.68 no.2 pp. 271-274
ISSN:
0002-1962
Subject:
perennial weeds,   etc   ; Paspalum notatum; Quartzipsamments; Secale cereale; Zea mays; atrazine; broadleaf weeds; corn; crops; cyanazine; discing; double cropping; forage yield; glyphosate; grasses; grazing; harvesting; herbicide residues; linuron; minimum tillage; no-tillage; nutrients; paraquat; pesticide application; planting; rye; sand; seasonal variation; weed control;     Show all 29 Subjects
Abstract:
... High costs of labor, fuel, and machinery; need to conserve moisture; loss of soil from erosion; and desire to double crop are some of the factors considered in the trend towards no-tillage methods of planting crops. No-tillage planting of corn in Pensacola bahiagrass (Paspalum notatum Flugge) sod and small grains such as rye (Secale cereale L.) was compared to conventional planting “rotavating, di ...
DOI:
10.2134/agronj1976.00021962006800020016x

6. Botanical implications of bracken control

Author:
CADBURY, C.J.
Source:
Botanical journal of the Linnean Society 1976 v.73 no.1/3 pp. 285-294
ISSN:
0024-4074
Subject:
perennials,   etc   ; Agrostis; Calluna vulgaris; Cirsium; Deschampsia flexuosa; Digitalis purpurea; Epilobium; Glyceria; Holcus mollis; Juncus effusus; Poa; Pteridium aquilinum; Rumex acetosella; Ulex; Urtica dioica; asulam; canopy; conservation areas; farms; ferns and fern allies; flora; grasses; habitats; heathlands; highlands; land management; pastures; spraying; woodlands; woody plants;     Show all 30 Subjects
Abstract:
... In addition to bracken, Pteridium aquilinum, and other ferns, only a restricted range of species among the natural flora suffer severe damage if sprayed with asulam in late summer. Of the plants associated with bracken in relatively well-drained situations those affected most by the herbicide include the three Ulex species, Rumex acetosella, young plants of Calluna vulgaris, some Compositae and gr ...
DOI:
10.1111/j.1095-8339.1976.tb02027.x

7. Copper Smelter Effluent Effects on Sonoran Desert Vegetation

Author:
Wood, Charles W., Jr.; Nash, Thomas N., III
Source:
Ecology 1976 v.57 no.6 pp. 1311-1316
ISSN:
0012-9658
Subject:
perennials,   etc   ; annuals; cacti and succulents; cadmium; copper; effluents; grasses; highlands; iron; lead; shrubs; soil; species diversity; vegetation; zinc; Arizona; Sonoran Desert;     Show all 17 Subjects
Abstract:
... The vegetation of an Arizonan upland community near a recently inactivated copper smelter at Superior, Arizona was studied. Vegetational parameters of species diversity, density, and cover were inversely related to concentrations of Cu, Cd, Pb, Fe, and Zn in the soil. Near the smelter, annuals, herbaceous perennials, grasses, cacti, and some shrubs were almost entirely absent. The most probable ca ...
DOI:
10.2307/1935056

8. Field Evaluations of the Herbicidal Effects of Fluridone on Two Soils

Author:
Banks, P. A.; Merkle, M. G.
Source:
Agronomy journal 1979 v.71 no.5 pp. 759-762
ISSN:
0002-1962
Subject:
perennial weeds,   etc   ; Albaqualfs; Cyperus esculentus; Gossypium hirsutum; Haplustolls; Sorghum halepense; annual weeds; annuals; application rate; autumn; broadleaf weeds; clay; clay soils; cotton; crop rotation; dinitroaniline herbicides; fluridone; grasses; growing season; herbicide residues; herbicide resistance; montmorillonite; pesticide application; phytotoxicity; plant density; rhizomes; sandy loam soils; spring; weed control;     Show all 29 Subjects
Abstract:
... The selective control of perennial weeds in cotton (Gossypium hirsutum L.) with soil applied herbicides has been difficult to achieve with currently available chemicals. Also, the long-term use of the dinitroaniline herbicides in cotton has resulted in a shifting of the weed spectrum to species which are resistant to these herbicides. New herbicides are needed to control these weed problems. The p ...
DOI:
10.2134/agronj1979.00021962007100050013x

9. Availability of Rock Phosphate as Measured by an Acid Tolerant Pasture Grass and Extractable Phosphorus

Author:
Yost, R. S.; Naderman, G. C.; Kamprath, E. J.; Lobato, E.
Source:
Agronomy journal 1982 v.74 no.3 pp. 462-468
ISSN:
0002-1962
Subject:
perennials,   etc   ; Haplustox; Urochloa decumbens; acid tolerance; agricultural development; aluminum; cerrado; citric acid; crops; forage; forage yield; grasses; pH; pasture plants; pastures; phosphorus; planting; rock phosphate; sodium bicarbonate; solubility; sulfuric acid; superphosphate; Brazil;     Show all 23 Subjects
Abstract:
... As agricultural development intensifies in tropical countries and as costs of superphosphate production increase, the need for further evaluation of rock phosphates has become apparent. An acid tolerant pasture grass (Brachiaria decumbens Stapf.) was used to evaluate the initial and residual (3 years) availability of P from several phosphate materials. A field study was conducted on a Typic Haplus ...
DOI:
10.2134/agronj1982.00021962007400030016x

10. Serengeti Grassland Ecology: The Role of Composite Environmental Factors and Contingency in Community Organization

Author:
McNaughton, S. J.
Source:
Ecological monographs 1983 v.53 no.3 pp. 291-320
ISSN:
0012-9615
Subject:
perennials,   etc   ; Andropogon; C4 plants; Echinochloa; Hyparrhenia; Themeda triandra; canopy; conservation areas; ecosystems; environmental factors; floodplains; grasses; grasslands; grazing intensity; herds; hills; landscapes; national parks; rain; rare species; savannas; soil texture; spatial variation; species diversity; topography; trees; understory; ungulates; water interception; Kenya; Tanzania;     Show all 31 Subjects
Abstract:
... Canopy interception data from 105 grassland stands in the Serengeti National Park in Tanzania and the Masai Mara Game Reserve in Kenya were used to evaluate community organization within an ecosystem defined by the annual movements of large herds of nomadic ungulates. Other studies tested hypotheses about factors influencing species composition and diversity of the communities. The herbaceous vege ...
DOI:
10.2307/1942533

11. Effect of Disturbed Soil Thickness on Soil Water Use and Movement under Perennial Grass

Author:
Merrill, S. D.; Smith, S. J.; Power, J. F.
Source:
Soil Science Society of America journal 1985 v.49 no.1 pp. 196
ISSN:
0361-5995
Subject:
perennials,   etc   ; soil texture; grasses; soil water; thickness;     Show all 5 Subjects
Abstract:
... Previous research has shown that plant growth on minespoil of lower plant productivity is dependent upon thickness of soil replaced. Sodium-affected strip-mine spoils are a significant reclamation problem in the northern Great Plains. The purpose of this work was to develop understanding of plant growth response to soil thickness over sodic minespoils by measurement of water movement, water use, a ...
Handle:
10113/16746
DOI:
10.2136/sssaj1985.03615995004900010039x

12. Avian Community Dynamics in Desert Grasslands: Observational Scale and Hierarchial Structure

Author:
Maurer, Brian A.
Source:
Ecological monographs 1985 v.55 no.3 pp. 295-312
ISSN:
0012-9615
Subject:
perennials,   etc   ; Passeriformes; Prosopis; biomass; birds; body size; breeding; breeding season; censuses; flowers; gene flow; grasses; grasslands; habitats; insect communities; insectivores; leaves; males; nutrient content; nutritive value; phenology; primary productivity; rain; rare species; savannas; seasonal variation; species richness; summer; trees; winter;     Show all 30 Subjects
Abstract:
... Avian communities living in a complex environment were studied by censuses of singing males, using several levels of resolution which focussed on different properties of the community. Within each level of resolution, various community parameters in two grassland habitat types were calculated over the entire breeding season, and for census intervals within the breeding season. The community level ...
DOI:
10.2307/1942579

13. Ergot Toxicity from Endophyte-Infected Grasses: A Review

Author:
Bacon, Charles W.; Lyons, Philip C.; Porter, James K.; Robbins, Joe D.
Source:
Agronomy journal 1986 v.78 no.1 pp. 106-116
ISSN:
0002-1962
Subject:
perennial weeds,   etc   ; Andropogon virginicus; Balansia; Claviceps; Festuca arundinacea; Sporobolus indicus; agroclavine; agronomy; blood serum; cattle; endophytes; ergometrine; ergot; ergotamine; ergovaline; etiology; geographical distribution; grasses; leaves; parasites; parasitism; pasture management; prolactin; surveys; toxicity; warm season;     Show all 26 Subjects
Abstract:
... Clarifying the role of grasses parasitized by a tribe of clavicipitaceous endophytes (Balansiae) in tbe etiology of the many cattle (Bos taurus) ergot toxicity syndromes is essential for identifying the correct toxic grass and establishing the proper pasture management practice necessary to eliminate toxicity. The distinction is required as the management practice used to prevent ergot toxicity by ...
DOI:
10.2134/agronj1986.00021962007800010023x

14. Nitrate Leaching and Drainage from Annual and Perennial Crops in Tile-drained Plots and Lysimeters

Author:
Bergström, Lars
Source:
Journal of environmental quality 1987 v.16 no.1 pp. 11-18
ISSN:
0047-2425
Subject:
perennials,   etc   ; Festuca pratensis; Hordeum vulgare; Medicago sativa; alfalfa; barley; calcium nitrate; cropping systems; disturbed soils; drainage; drainage water; forage crops; grasses; groundwater; leaching; leys; lysimeters; nitrogen fertilizers; plowing; soil profiles; tile drainage; weather;     Show all 22 Subjects
Abstract:
... Leaching of NO₃ with drainage water from tile-drained field plots and from three types of lysimeters was estimated during a 4-yr period. Treatments included barley (Hordeum distichum L.) with and without N-fertilizer, a grass ley (Festuca pratensis), and a lucerne ley (Medicago sativa) (i.e., 4-yr forage crops). The maximum amount of NO₃ leached was 36 kg N ha⁻¹ yr⁻¹ for barley fertilized with Ca( ...
DOI:
10.2134/jeq1987.00472425001600010003x

15. Secondary Succession and the Pattern of Plant Dominance Along Experimental Nitrogen Gradients

Author:
Tilman, David
Source:
Ecological monographs 1987 v.57 no.3 pp. 189-214
ISSN:
0012-9615
Subject:
perennials,   etc   ; Elymus repens subsp. repens; Schizachyrium scoparium; annuals; calcium; grasses; magnesium; nitrogen; normal distribution; phytomass; potassium; savannas; secondary succession; soil; species richness; surveys; trace elements; woody plants; Minnesota;     Show all 19 Subjects
Abstract:
... In 1982, experimental nitrogen gradients were established on both existing and disturbed (disked) vegetation in three fields (abandoned 14, 25, and 48 yr) and on existing vegetation in native oak savannah. Each of these seven gradients contained five or six replicates of each of nine treatments that differed in the annual rate of nitrogen addition. In none of the fields did plant biomass, height, ...
DOI:
10.2307/2937080

16. Succession in Old‐Field Plant Communities: Effects of Contrasting Types of Nutrient Enrichment

Author:
Carson, Walter P.; Barrett, Gary W.
Source:
Ecology 1988 v.69 no.4 pp. 984-994
ISSN:
0012-9658
Subject:
perennials,   etc   ; annuals; fertilizers; grasses; nutrients; plant communities; primary productivity; sludge; species diversity; summer;     Show all 10 Subjects
Abstract:
... We investigated the effects of monthly nutrient applications on succession in two old—field plant communities. Succession was monitored for 3 yr in 1—yr (younger) and 4—yr (older) experimental plots. Three 0.1—ha plots in each old field were treated with sludge, three with fertilizer, and two were left as untreated controls. In the younger community, herbaceous perennials and winter annuals replac ...
DOI:
10.2307/1941253

17. Model Evaluation for Perennial Grasses in the Southern United States

Author:
Overman, A. R.; Wilkinson, S. R.
Source:
Agronomy journal 1992 v.84 no.3 pp. 523-529
ISSN:
0002-1962
Subject:
perennials,   etc   ; grasses; crop yield; nitrogen fertilizers; Georgia; Arkansas; Alabama; Florida;     Show all 8 Subjects
Abstract:
... Models can be used to estimate yield response of grasses to applied N. This analysis was conducted to show variation of model parameters among grasses at the same location and differences among locations. The logistic equation was used to relate annual dry matter yield to applied N for four locations (Blairsville, GA; Fayetteville, AR; Thorsby, AL; Jay, FL) and five perennial grasses [bermudagrass ...
DOI:
10.2134/agronj1992.00021962008400030031x

18. Growth of C3 and C4 Perennial Grasses under Reduced Irradiance

Author:
Kephart, Kevin D.; Buxton, Dwyane R.; Taylor, Elwynn S.
Source:
Crop science 1992 v.32 no.4 pp. 1033-1038
ISSN:
0011-183X
Subject:
perennials,   etc   ; grasses; photosynthesis; solar radiation; plant morphology; photoperiod; crop yield; artificial shade; Iowa;     Show all 9 Subjects
Abstract:
... Several studies have compared C₃ and C₄ species for response to water and temperature regimes. Little comparative information exists, however, on growth responses of C₃ and C₄ species to irradiance regime. The objective of this study was to determine adaptive responses of C₃ and C₄ grasses to irradiance regime. Three C₃ and two C₄ perennial forage grasses were field—established near Ames, IA, and ...
DOI:
10.2135/cropsci1992.0011183X003200040040x

19. Breeding systems for cross-pollinated perennial grasses

Author:
Vogel, K.P.; Pedersen, J.F.
Source:
Plant breeding reviews 1993 v.11 pp. 251
ISSN:
0730-2207
Subject:
perennials,   etc   ; Poaceae; grasses; plant breeding; selection methods; genetic improvement; progeny testing; crossing; cross pollination; breeding methods; selection response;     Show all 11 Subjects
Abstract:
... This review describes and critically evaluates the methods that have been developed for breeding improved perennial, cross-pollinated forage grasses by referring to the following: reproductive and breeding characteristics; breeding systems, including ecotype selection, recurrent restricted phenotypic selection, a half-sib progeny test, between and within family selection, and recurrent multi-step ...
Handle:
10113/32497

20. Competition Among Grasses Along a Nitrogen Gradient: Initial Conditions and Mechanisms of Competition

Author:
Wedin, David; Tilman, David
Source:
Ecological monographs 1993 v.63 no.2 pp. 199-229
ISSN:
0012-9615
Subject:
perennials,   etc   ; Agropyron; Agrostis hyemalis var. scabra; Elymus repens subsp. repens; Poa pratensis; Schizachyrium scoparium; ammonium; biomass; grasses; interspecific competition; interspecific variation; models; nitrates; nitrogen; nitrogen fertilizers; sand; soil;     Show all 17 Subjects
Abstract:
... We grew four perennial grass species (Poa pratensis, Agropyron repens, Agrostis scabra, and Schizachyrium scoparium) for 5 yr in monocultures and in pairwise competition plots on an experimental nitrogen gradient. The gradient contained plots ranging from 100% sand to 100% black soil, plus plots that received additional N fertilizer. To examine the impact of initial conditions on the long—term out ...
DOI:
10.2307/2937180