scholarly journals Effect of Different Cutting Frequencies on the Forage Yield and Some Silage Quality Characteristics of Switch grass (Panicum virgatum)

2020 ◽  
pp. 658-668
Author(s):  
Hakan GEREN
Keyword(s):  
Panicum Virgatum ◽  
Quality Characteristics ◽  
Forage Yield ◽  
Switch Grass ◽  
Silage Quality

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 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.

Millet forage yield and silage quality as affected by water and nitrogen application at different sowing dates

2020 ◽  
Vol 75 (2) ◽  
pp. 169-180
Author(s):  
Afsaneh Nematpour ◽  
Hamid Reza Eshghizadeh ◽  
Morteza Zahedi ◽  
Gholam Reza Ghorbani
Keyword(s):  
Forage Yield ◽  
Nitrogen Application ◽  
Sowing Dates ◽  
Silage Quality

scholarly journals Effect of Biogas Digestate and Mineral Fertilisation on the Soil Properties and Yield and Nutritional Value of Switchgrass Forage

Agronomy ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 490
Author(s):  
Aleksandra Głowacka ◽  
Bogdan Szostak ◽  
Renata Klebaniuk
Keyword(s):  
Physicochemical Properties ◽  
Panicum Virgatum ◽  
Nutritional Value ◽  
Organic Matter Content ◽  
Application Rate ◽  
Matter Content ◽  
Forage Yield ◽  
Biogas Digestate ◽  
Green Fodder ◽  
Silty Loam

The aim of this study was to assess the effect of a three-year application of digestate from an agricultural biogas plant on the physicochemical properties of highly acidic pHKCl 4.4 ± 0.23, silty loam soils with low macronutrient content and on the yield and nutritional value of switchgrass (Panicum virgatum L.) biomass harvested for green fodder. The experiment included the following treatments: (1) O (control)—no fertilisation, (2) NPK—mineral fertilisation with (in kg ha−1) 150 N, 53.0 P and 105 K, (3) biogas digestate at 30 m3 ha−1 and (4) biogas digestate at 60 m3 ha−1. The higher application rate of biogas digestate significantly reduced soil acidity to pHKCl 4.9 ± 0.18 and improved its sorption properties. It also increased the soil organic matter content from 5.6 ± 0.21 to 6.4 ± 0.22 g Corg kg−1 and of K and Zn. The higher level of biogas digestate significantly increased switchgrass yield to 5.15 ± 0.26 t ha−1. The lower application rate of biogas digestate resulted in forage yield of 4.30 ± 0.20 t ha−1 comparable to that obtained after mineral fertilisation (4.33 ± 0.22 t ha−1). Following application of mineral fertilisers and the higher level of biogas digestate, the number of panicles per plant (150 ± 2.49–157 ± 0.6.17), panicle height (107 ± 1.98–114 ± 2.08), crude ash content (61.2 ± 0.43–65.5 ± 0.38) and protein content (106 ± 0.59–92 ± 1.11) in the switchgrass biomass from the first cut were higher than in the case of unfertilised soil (110 ± 3.81, 93 ± 1.32, 55.5 ± 0.40, 80.3 ± 0.37). The use of mineral fertilisers and biogas digestate increased the content of protein, P and Mg in biomass from the second cut. The results suggest that the use of digestate improved the physicochemical properties of highly acidic soil and increased the yield of switchgrass forage without diminishing its nutritional value.

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.

scholarly journals Row Arrangements of Maize and Soybean Intercrop on Silage Quality and Grain Yield

2019 ◽  
Vol 11 (2) ◽  
pp. 286
Author(s):  
Vanderson Vieira Batista ◽  
Paulo Fernando Adami ◽  
Pedro Valério Dutra de Moraes ◽  
Karine Fuschter Oligini ◽  
Cleverson Luiz Giacomel ◽  
...  
Keyword(s):  
Grain Yield ◽  
Crude Protein ◽  
Biomass Yield ◽  
Block Design ◽  
Forage Yield ◽  
Protein Yield ◽  
Maize Grain Yield ◽  
Sole Crop ◽  
Silage Quality ◽  
Maize Grain

The success of maize + soybean intercrop depends on the plant arrangement. An experiment was carried out to evaluate different row arrangements on intercrop forage yield, silage quality and maize grain yield in relation to maize as a sole crop. The experiment was set up with a randomized complete block design with eight row arrangements between maize and Soybean. Maize biomass yield among crop arrangements were similar, although, lower than the maize sole crop. On the other hand, these treatments showed higher soybean biomass yield, which in turn increased silage crude protein and crude protein yield per unit area. Maize thousand grain weight, grain yield per plant and per area was affected by the intercrop arrangements. The use of two corn rows + two soybean rows (2M+2S-30 cm) and four corn rows + four soybean rows (4M+4S-30 cm) showed higher crude protein yield per area associated with similar maize grain yield in relation to the sole maize crop. In conclusion, alternating four maize rows with four soybean rows was the optimum row ratio in maize + soybean intercrop, though this needs to be further confirmed by more trials.

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