scholarly journals Dry Matter Accumulation of Four Warm Season Grasses in the Nebraska Sandhills

1979 ◽  
Vol 32 (1) ◽  
pp. 52 ◽  
Author(s):  
William L. Gilbert ◽  
L. J. Perry ◽  
J. Stubbendieck
Keyword(s):  
Dry Matter ◽  
Warm Season ◽  
Dry Matter Accumulation ◽  
Nebraska Sandhills ◽  
Warm Season Grasses

scholarly journals Morphological Development of 2 Warm-Season Grasses in the Nebraska Sandhills

1998 ◽  
Vol 51 (4) ◽  
pp. 456 ◽  
Author(s):  
J. R. Hendrickson ◽  
L. E. Moser ◽  
K. J. Moore ◽  
S. S. Waller
Keyword(s):  
Warm Season ◽  
Morphological Development ◽  
Nebraska Sandhills ◽  
Warm Season Grasses

scholarly journals Evaluating Digestibility and Toxicity of Native Warm-season Grasses for Equines

2020 ◽  
Author(s):  
S M Ghajar ◽  
H McKenzie ◽  
J Fike ◽  
B McIntosh ◽  
B F Tracy
Keyword(s):  
Dry Matter ◽  
Latin Square ◽  
Warm Season ◽  
Big Bluestem ◽  
Cool Season ◽  
Digestible Energy ◽  
Eastern Gamagrass ◽  
Dry Matter Digestibility ◽  
Structural Carbohydrate ◽  
Warm Season Grasses

Abstract Introduced cool-season grasses are dominant in Virginia’s grasslands, but their high digestible energy and non-structural carbohydrate (NSC) levels pose a risk for horses prone to obesity and laminitis. Native warm-season grasses (NWSG) have lower digestible energy and NSC levels that may be more suitable for horses susceptible to laminitis. Although NWSGs have desirable characteristics, they are novel forages for horses. Little is known about NWSG intake or potential toxicity to horses or how grazing by horses may affect NWSG swards. The overall objectives of this research were to 1) assess voluntary intake, toxicological response, and apparent digestibility of NWSG hays fed to horses; and 2) evaluate the characteristics of three NWSG species under equine grazing. For the first objective, a hay feeding trial using indiangrass (IG) (Sorghastrum nutans) and big bluestem (BB) (Andropogon gerardii) was conducted with 9 Thoroughbred geldings in a replicated 3 x 3 Latin square design. Voluntary dry matter intake of IG and BB hays by horses were 1.3% and 1.1% of BW/d, lower than orchardgrass (Dactylis glomerata), an introduced cool-season grass, at 1.7% of BW/d (P = 0.0020). Biomarkers for hepatotoxicity remained within acceptable ranges for all treatments. Apparent dry matter digestibility (DMD) did not differ among hays, ranging from 39 to 43%. Non-structural carbohydrate levels ranged from 4.4 to 5.4%, below maximum recommended concentrations for horses susceptible to laminitis. For the second objective, a grazing trial was conducted comparing IG, BB, and eastern gamagrass (Tripsacum dactyloides) (EG) yields, forage losses, changes in vegetative composition, and effects on equine bodyweight. Nine, 0.1-hectare plots were seeded with one of the three native grass treatments, and each plot was grazed by one Thoroughbred gelding in two grazing bouts, one in July and another in September 2019. Indiangrass had the greatest available forage, at 4340 kg/ha, compared with 3590 kg/ha from BB (P < 0.0001). Eastern gamagrass plots established poorly, and had only 650 kg/ha available forage during the experiment. Grazing reduced standing cover of native grasses in IG and BB treatments by about 30%. Horses lost 0.5 to 1.5 kg BW/d on all treatments. Findings suggest indiangrass and big bluestem merit further consideration as forages for horses susceptible to obesity and pasture-associated laminitis.

scholarly journals Ecophysiology of Two Native Invasive Woody Species and Two Dominant Warm‐Season Grasses in the Semiarid Grasslands of the Nebraska Sandhills

2006 ◽  
Vol 167 (5) ◽  
pp. 991-999 ◽  
Author(s):  
Kathleen D. Eggemeyer ◽  
Tala Awada ◽  
David A. Wedin ◽  
F. Edwin Harvey ◽  
Xinhua Zhou
Keyword(s):  
Warm Season ◽  
Woody Species ◽  
Nebraska Sandhills ◽  
Native Invasive ◽  
Warm Season Grasses

scholarly journals Stomatal variability of native warm-season grasses from the Nebraska Sandhills

2002 ◽  
Vol 82 (2) ◽  
pp. 349-355 ◽  
Author(s):  
Tala Awada ◽  
Lowell E. Moser ◽  
Walter H. Schacht ◽  
Patrick E. Reece
Keyword(s):  
Leaf Surface ◽  
Stomatal Density ◽  
Warm Season ◽  
Limiting Factor ◽  
Stomatal Characteristics ◽  
Little Bluestem ◽  
Nebraska Sandhills ◽  
Dry Down ◽  
Sand Bluestem ◽  
Warm Season Grasses

Soil moisture deficit is usually the major limiting factor for herbage production in the Sandhills of Nebraska. We examined inter-population and interspecific variability in stomatal characteristics and drought tolerance in sand bluestem (Andropogon hallii Vitman), little bluestem [Schizachyrium scoparium (Michx.) Nash], prairie sandreed [Calamovilfa longifolia (Hook) Scribn.], and switchgrass (Panicum virgatum L.). Ramets were collected during the dormant season across an aridity gradient from east to west (ranging from 560 mm to 340 mm average annual precipitation) in the Sandhills of Nebraska. Plants were grown in individual pots under greenhouse conditions. Once plants were well established, stomatal characteristics were determined and stomatal conductance (gs) was measured through a dry-down period of no watering. Populations did not differ in stomatal characteristics across the gradient, except for stomatal density on the adaxial leaf surface of prairie sandreed and the abaxial leaf surface of sand bluestem. Leaves of switchgrass and prairie sandreed were amphistomatic (stomata on both leaf surfaces), whereas leaves of little bluestem and sand bluestem were hypostomatic (stomata on the lower leaf surface). In the absence of drought, gs was 17 to 31% higher in little bluestem than in other species. Differences among species in gs were found mainly when watered and disappeared as the dry-down progressed. There was a positive relationship between stomatal density and gs in all species except prairie sandreed. Prairie sandreed maintained 35% of the initial relative water content of its leaves after 17 d of dry-down, compared to 23% for sand bluestem, 14% for switchgrass, and 9% for little bluestem. Variation in stomatal traits within species did not explain ecotypic adaptation to sites with a range of precipitation in the Nebraska Sandhills. Key words: Stomatal characteristics, water stress, warm season grasses, Nebraska Sandhills

Characteristics of Dry Matter Accumulation and Effect of Fertilizer Application in Cassava

2013 ◽  
Vol 39 (1) ◽  
pp. 126
Author(s):  
Qiao-Yi HUANG ◽  
Shuan-Hu TANG ◽  
Jian-Sheng CHEN ◽  
Fa-Bao ZHANG ◽  
Kai-Zhi XIE ◽  
...  
Keyword(s):  
Dry Matter ◽  
Fertilizer Application ◽  
Dry Matter Accumulation

Photosynthetic Characteristics, Dry Matter Accumulation and Translocation, Grain Filling Parameter of Three Main Maize Varieties in Production

2018 ◽  
Vol 44 (3) ◽  
pp. 414 ◽  
Author(s):  
Tian-Jun XU ◽  
Tian-Fang LYU ◽  
Jiu-Ran ZHAO ◽  
Rong-Huan WANG ◽  
Chuan-Yong CHEN ◽  
...  
Keyword(s):  
Dry Matter ◽  
Grain Filling ◽  
Photosynthetic Characteristics ◽  
Dry Matter Accumulation ◽  
Maize Varieties
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