scholarly journals Determination of mechanization properties in Switch Grass(Panicum virgatum L.) Agriculture

2017 ◽  
Vol 31 (3) ◽  
pp. 111-115
Author(s):  
Cevat Filikci ◽  
Tamer Marakoğlu
Keyword(s):  
Panicum Virgatum ◽  
Switch Grass ◽  
Panicum Virgatum L

scholarly journals Вплив умов вирощування на врожайність фітомаси світчграсу (Panicum Virgatum L.) другого року веґетації

2013 ◽  
pp. 30-35
Author(s):  
М. І. Кулик
Keyword(s):  
Panicum Virgatum ◽  
Crop Productivity ◽  
Raw Material ◽  
Biofuel Production ◽  
Switch Grass ◽  
Panicum Virgatum L ◽  
Second Year ◽  
Quantitative Indexes ◽  
Space Width

Наведено особливості формування врожайності фітомаси світчграсу – проса лозовидного за вирощування його на деградованих ґрунтах із метою отримання сировини для виробництва біопалива. Подано фенологічні спостереження – тривалість міжфазних періодів під час веґетації культури другого року життя. Встановлено кількісні показники веґетативної частини рослин, подано їх взаємозв’язок та влив на формування врожайності культури. Визначена продуктивність фітомаси світчграсу досліджуваних сортів за різної ширина міжрядь. Peculiarities of forming switch-grass phytomass productivityduring growing on the degraded soils for obtaining raw material for biofuel production are given.Phenologicalobservations such asinterphase perioddurationduring the second year crop vegetation are made. The quantitative indexes of plantvegetative part,correlation of these indexes and influence on crop productivity are established. Switch-grass phytomass productivity of the experimentedvarietieswith different space width between rows is defined.

NITRATE REDUCTASE ACTIVITY AND N FRACTIONS IN TIMOTHY AND SWITCH GRASS AS INFLUENCED BY N AND S FERTILIZATION

1977 ◽  
Vol 57 (4) ◽  
pp. 1151-1157 ◽  
Author(s):  
J. W. FRIEDRICH ◽  
DALE SMITH ◽  
L. E. SCHRADER
Keyword(s):  
Nitrate Reductase ◽  
Panicum Virgatum ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
N Fertilization ◽  
Phleum Pratense ◽  
Total N ◽  
Switch Grass ◽  
Panicum Virgatum L ◽  
N Fractions

The effects of N and S fertilization on nitrate reductase activity (NRA) and N fractions were studied in timothy (Phleum pratense L.) and switch grass (Panicum virgatum L.). Soil cores of timothy and switch grass plants were obtained from a marginally S-deficient area at Madison, Wisconsin. The cores were placed in growth chambers maintained near the optimal temperature for each species. Three rates of N (0, 224, 448 kg N/ha as Ca(NO3)2) and three rates of S (0, 11.2, and 22.4 kg S/ha as CaSO4) were applied in all possible combinations. Plants were harvested at anthesis and NRA in the leaves (blades) was determined. Total N, reduced N, nitrate-N (NO−3-N), and free α-amino N concentrations (concns.) were measured in leaves and stems (culms, leaf sheaths, and inflorescences). Fertilization with S had little effect on the concn. of any N fraction or on NRA in either species. Switch grass and timothy were not S-deficient as indicated by tissue S concn. Total N, NO−3-N, and free α-amino N concns. increased significantly in all plant fractions of both species with each increment of N fertilization. "Toxic" concns. of NO−3-N accumulated in timothy leaves when N was applied. Switch grass leaf NO−3-N concn. was less than one-half that found in timothy. NRA and concn. of reduced N in timothy leaves increased significantly only with the first increment of N fertilization. NRA and concn. of reduced N in switch grass leaves increased significantly with each increment of N fertilization. NRA was significantly correlated (0.01 level) with the concn. of every N fraction in the leaves of both species.

Effect of Different Sowing Methods on Growth and Fodder Yield of Switch Grass (Panicum virgatum L.) in Jega Semi-arid Zone of Kebbi State, Nigeria

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Misbau Alaba Muftau ◽  
Bello Shehu Malami ◽  
Umar Yushau Gwamba ◽  
Muhammad Ibrahim Ribah ◽  
Yakubu NaAllah
Keyword(s):  
Panicum Virgatum ◽  
Arid Zone ◽  
Switch Grass ◽  
Panicum Virgatum L ◽  
Fodder Yield ◽  
Semi Arid

scholarly journals Determination of swithgrass (Panicum virgatum L.) seeds quality

2021 ◽  
Author(s):  
V. A. Doronin ◽  
Yu. A. Kravchenko ◽  
V. V. Dryha ◽  
V. V. Doronin ◽  
H. S. Honcharuk
Keyword(s):  
Seed Germination ◽  
Panicum Virgatum ◽  
Production Test ◽  
Third Way ◽  
Cool Period ◽  
Germination Energy ◽  
Dormancy Period ◽  
Panicum Virgatum L

Purpose. Developing a method for determination of the laboratory seed germination that could reduce the biological dormancy period and, accordingly, increase the intensity of germination. Methods. Laboratory, measuring and weighing, mathematical and statistical. Results. Cooling switchgrass seeds at a temperature of 10°C for 7 days on average for three years did not lead to a decrease in germination energy and germination compared to cooling for 14 days. These indexes were almost the same and amounted to 74 and 76%, 73 and 75%, respectively. There were no significant deviations in germination energy and seed germination over the years of research as affected by duration of the cool period. The production test of the developed method, carried out in the accredited control and measuring laboratory, confirmed the obtained in the laboratory results. Conclusions. Seed germination by an improved method, when pre-cooling is carried out for 7 instead of 14 days and counting of germinated seeds on 15th day instead of 20th, has reduced the time to determine germination by 13 days without reducing the quality of analysis. It is advisable to determine the 1000-seed weight in one of three ways, but the most accurate is the third way, i.e. counting the seeds in 10 repetitions.

Content and deposition rates of cellulose, hemicellulose, and lignin during regrowth of forage grasses and legumes

1992 ◽  
Vol 72 (3) ◽  
pp. 809-818 ◽  
Author(s):  
J. E. Bidlack ◽  
D. R. Buxton
Keyword(s):  
Cell Wall ◽  
Panicum Virgatum ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Dry Weight ◽  
Limited Information ◽  
Switch Grass ◽  
Panicum Virgatum L ◽  
Trifolium Pratense L ◽  
Dactylis Glomerata L

Cell-wall (CW) components greatly influence digestibility of forages as they mature. There is only limited information on the timing of rates of deposition of CW components. This investigation examined differences in CW and CW component deposition in greenhouse-grown alfalfa (Medicago sativa L.), birds-foot trefoil (Lotus corniculatus L.), red clover (Trifolium pratense L.), orchardgrass (Dactylis glomerata L.), smooth bromegrass (Bromus inermis Leyss.), and switchgrass (Panicum virgatum L.). Plant material was sampled from the basal 10 cm of forage after harvesting at 3–5 cm above the soil level. Samples analyzed included sheaths from orchardgrass, sheaths and stems from bromegrass and switch-grass, and stems from all legumes. After establishment and herbage removal, samples were collected biweekly between 2 and 10 wk of regrowth. Results indicated that, except for orchardgrass, maximum rates of CW and CW component deposition usually occurred earlier in legumes compared with those of grasses. Maximum CW deposition for all species occurred within 1–3 d of maximum dry weight deposition. Among CW components in grasses and legumes, maximum deposition of hemicellulose occurred first, followed by that of cellulose (1–6 d later), and then lignin (up to 14 d after maximum hemicellulose deposition). Maximum cellulose deposition in all species occurred at the same time as maximum CW deposition.Key words: Cell wall, deposition, cellulose, hemicellulose, lignin, forage

Identifying Native Prairie Grass Seedlings

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 450e-451
Author(s):  
Virginia A. Gaynor ◽  
Mary Hockenberry Meyer
Keyword(s):  
Panicum Virgatum ◽  
Schizachyrium Scoparium ◽  
Sorghastrum Nutans ◽  
Native Prairie ◽  
Switch Grass ◽  
Little Bluestem ◽  
Prairie Grass ◽  
Central United States ◽  
Prairie Restorations ◽  
Sideoats Grama

There is great interest in prairie gardens and prairie restorations in the central United States. Small prairie gardens are often established with plugs, but most restorationists and landscape contractors use seed for large plantings. If initial establishment is poor, restorations are often interseeded the second or third season. However, to evaluate early establishment and determine if interseeding is necessary, contractors must be able to identify native grasses in the seedling and juvenile stages. In this study we investigated vegetative characteristics of native prairie grass seedlings. Seven species of native prairie grass were grown in the greenhouse: Andropogon gerardii (big bluestem), Sorghastrum nutans (Indian grass), Panicum virgatum (switch grass), Schizachyrium scoparium (little bluestem), Bouteloua curtipendula (sideoats grama), Elymus canadensis (Canada wildrye), and Bromus kalmii (Kalmís brome). Every 2 to 3 weeks after germination, seedlings were photographed, pressed, and mounted. Additional photographs were taken through the dissecting scope at key stages of development. Ligules and auricles were found to be useful in distinguishing species, and our close-up photographs highlight these structures. Hairiness and color were variable within a species and could not be used reliably in identification. A seedling identification key will be presented for the species studied.

scholarly journals Internode structure and cell wall composition in maturing tillers of switchgrass (Panicum virgatum. L)

2007 ◽  
Vol 98 (16) ◽  
pp. 2985-2992 ◽  
Author(s):  
Gautam Sarath ◽  
Lisa M. Baird ◽  
Kenneth P. Vogel ◽  
Robert B. Mitchell
Keyword(s):  
Cell Wall ◽  
Panicum Virgatum ◽  
Cell Wall Composition ◽  
Panicum Virgatum L
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