Reed Canarygrass (Phalaris Arundinacea L.) Response To Liquid Dairy Manure Or Fertilizer N,
2024
USDA, Agricultural Research Service
Reed Canarygrass (Phalaris Arundinacea L.) Response To Liquid Dairy Manure Or Fertilizer N, M P. Russelle, G W. Randall, P D. Clayton, M A. Schmitt, L J. Greub, C C. Sheaffer, R R. Kalton, D H. Taylor
IGC Proceedings (1977-2023)
Livestock farmers face constraints in efficient manure management because of limited land availability, especially during the growing season, but reed canarygrass (Phalaris arundinacea L.) may provide a solution. We measured yield and apparent N removal of established reed canarygrass with surface-applied dairy manure slurry at three locations in the Upper Midwest, USA. Slurry was broadcast or banded at rates up to 375 m3 ha-1 (1190 kg N ha-1) in single or split applications and N fertilizer was applied at rates up to 448 kg N ha- 1 for comparison. Herbage was harvested three times per year. Nitrogen removal in …
The Influence Of Plant Density And Level Of Nitrogen Fertilization On The Production Of Eragrostis Curvula,
2024
University of Kentucky
The Influence Of Plant Density And Level Of Nitrogen Fertilization On The Production Of Eragrostis Curvula, P A. Pieterse, N F.G. Rethman, J Van Bosch
IGC Proceedings (1977-2023)
The objective of this study was to determine whether plant density would have an influence on dry matter (CM) yield and to determine it’s interaction (if any) with levels of N fertilization. Plants on a broadcast establishment of lovegrass (Eragrostis curvula) were mechanically thinned, to leave 30 cm rows with spacing of 0.5 and 1 m. N fertilizer was applied in spring at levels equivalent to 0, 50, 100 and 150 kg N ha-1. The trial was conducted over three growing seasons. In the second and third years the DM yields with 100 and 150 kg N ha-1 on the …
Potassium Rates For Macrotyloma Axillare Growth,
2024
University of Sao Paulo, Brazil
Potassium Rates For Macrotyloma Axillare Growth, R A. Martim, F A. Monteiro, P.R. L. Portilho
IGC Proceedings (1977-2023)
The response of the tropical forage legume macrotiloma guata (Macrotyloma axillare (E. Mey) Verdc) to potassium rates was studied in a greenhouse experiment. The plants were grown in nutrient solution with seven potassium (K) rates, 0; 3.5; 7; 21; 35; 105 and 245 mg l-1 of solution, in randomized complete block design, with four replications. There was significant response of the legume to potassium rates. Considerations are made on the influence of these levels on plant dry matter yield in two harvests, root dry matter production and potassium and magnesium concentrations in the plant tissue.
Phosphorus Use Efficiency For Biomass Production Of Legume Species,
2024
University of Buenos Aires
Phosphorus Use Efficiency For Biomass Production Of Legume Species, A T. Ayala Torales, V A. Deregibus, P R. Moauro
IGC Proceedings (1977-2023)
The objective of the experiment was to identify traits associated with the production of plant biomass, and hence with P utilization efficiency, when legume species were fertilized. Red clover (Trifolium pratense) and narrowleaf birdsfoot trefoil (Lotus tenuis) were compared in a greenhouse experiment using phosphorus deficient soils. Three plants grew in pots fertilized with 0, 2, 4, 8, 15, 20, 30 and 40 ppm in soil, in a randomized experimental design. Harvest was made at 60 days from the sowing date. Leaf areas, shoot and root biomass, and tissue phosphorus contents were measured. Results showed that …
Phosphogypsum As A Source Of Nutrients For Bahiagrass,
2024
University of Florida
Phosphogypsum As A Source Of Nutrients For Bahiagrass, J E. Rechcigl, I S. Alcordo
IGC Proceedings (1977-2023)
Phosphogypsum is a by-product of the manufacture of phosphoric acid from phosphate rock and is a potential source of sulfur and calcium for crops. There are currently more than 700 million Mg of phosphogypsum in Florida alone stacked in waste piles and an additional 30 million Mg produced annually. A 3-year study was conducted to determine whether addition of phosphogypsum to bahiagrass would increase production and quality. Results indicate that addition of up to 4.0 Mg/ha phosphogypsum increased bahiagrass yields, protein content, and in vitro digestibility of forage. This study has demonstrated that phosphogypsum can be used as an alternative …
A Review Of Centrosema Pascuorum (Centurion) Cvv. Cavalcade And Bundey As A Pasture Legume In The Ley Farming System Studies In North West Australia,
2024
Department of Primary Industry and Fisheries
A Review Of Centrosema Pascuorum (Centurion) Cvv. Cavalcade And Bundey As A Pasture Legume In The Ley Farming System Studies In North West Australia, K Thiagalingam, D Zuill, T Price
IGC Proceedings (1977-2023)
Field experiments and commercial experience with the pasture legume Centrosema pascuorum (centurion) in the Katherine and Douglas Daly districts of the Northern Territory over the past ten years were reviewed. Results show that cultivars of this species (Cavalcade and Bundey) have good potential for improving both soil fertility and the quality of dry season forage (as hay or grazing) for cattle in mixed farming systems in the semi-arid tropics of north west Australia.
Influence Of N Fertilization Application And Regrowth On The Yields Of Grassland,
2024
Godollo University of Agricultural Sciences
Influence Of N Fertilization Application And Regrowth On The Yields Of Grassland, J Tasi
IGC Proceedings (1977-2023)
The effect of different levels of fertilization and regrowth periods on the quantity and quality and distribution of yields of eleven grassland species were studied in two plots in Hungary. The effect of the following variables were tested: regrowth period of 20 and 40 days; control, 100 and 200 kg N ha-1 and 11 grass and leguminous species.
Effect Of Plant Age And N And P Fertilization On Mineral Composition Of Andropogon Gayanus,
2024
Fondo Nacional de Investigaciones Agropecuarias,
Effect Of Plant Age And N And P Fertilization On Mineral Composition Of Andropogon Gayanus, D E. Morillo, A Caraballo, J Faria-Marmoll, L R. Mcdowell
IGC Proceedings (1977-2023)
Mineral concentrations of Andropogon gayanus Kunth, as affected by age of regrowth, 42 and 63 days (six and four cuttings); rate (kg/ ha/year) of N fertilizer, 0, 100 and 200, and of P2O5, 0 and 75, were evaluated on a sandy-loam Aridisol (pH 5.5) in Venezuela, using a split-split-plot experimental design with two replications. Forage mineral concentrations did not differ (P>0.05) among ages. Mean Ca, P, Mg, Na were: 0.20, 0.11, 0.10 and 0.029 %, and regarded as deficient for ruminants. Only K (1.21 %) was considered adequate. Mean Fe, Zn, Cu, Mn and Co were 57, 24, 2.7, …
Seasonality In The Response Of Perennial Grass-Clover Pastures To Phosphorus Fertiliser,
2024
Lincoln University
Seasonality In The Response Of Perennial Grass-Clover Pastures To Phosphorus Fertiliser, A K. Metherell, A C. Mckenzie
IGC Proceedings (1977-2023)
Pasture dry matter yields from individual cuts of multi-year phosphorus (P) fertilizer field trials were analyzed for evidence of consistent seasonal trends in the response to P. The relative response to P was greatest in the late autumn - winter period, with the seasonal variation in relative yield being greater where soil fertility and mean annual relative yields were lowest.
Interaction Of Endomycorrhizal Fungi And Phosphate On Neonotonia Wightii, Lackey,
2024
Instituto de Zootecnia
Interaction Of Endomycorrhizal Fungi And Phosphate On Neonotonia Wightii, Lackey, V T. Paulino, O.M. A.A. Ghisi, M.A. C. Lucena, M J. Valarini, J C. Werner
IGC Proceedings (1977-2023)
This experiment was carried out in greenhouse condition, to study the effect of four phosphorus levels (20, 80, 140 and 200 kg of P2O5/ ha) with or without fungi mycorrhizal inoculation (Acaulospora longula + A. morrowae ). Five accessions of Neonotonia wightii (Wightii & Arn) Lackey (perennial soyabean) were studied: Malawi, Tinaroo, NO1264, NO409 and NO 250. The growth of Neonotonia was improved by the phosphorus fertilization.The effect of VAM inoculation was greater in the lower levels of P fertilization reducing its effect in the higher levels of P applied. The presence of soluble P induced higher N accumulation …
Effects Of Agropastoral Systems On Microbially Bound Phosphorus In Low P Acid Soils,
2024
Swiss Federal Institute of Technology, Lausanne
Effects Of Agropastoral Systems On Microbially Bound Phosphorus In Low P Acid Soils, A Oberson, D K. Friesen, C Morel, H Tiessen, E Frossard
IGC Proceedings (1977-2023)
The effect of agropastoral systems replacing native savanna on microbially bound phosphorus (Pmic) in low P acid soils was investigated. Chloroform released P (PChl) was measured to estimate Pmic. In a long-term improved pasture experiment, PChl was higher in grass-legume (GL) than grass-only pasture (GO). Although the P balance was slightly higher in GO than in GL, available P contents followed the same trend as PChl suggesting that the presence of legumes enhances the maintenance of P fertility. In a rice-pasture system, PChl was higher than under rice monocrop indicating an effect of the cropping system on PChl that goes …
Potassium Release From Clays By Biosignal Of Grass Root Exudates,
2024
Kobe University
Potassium Release From Clays By Biosignal Of Grass Root Exudates, S Suzuki
IGC Proceedings (1977-2023)
The objective of this study was to clarify that the root exudates of Italian ryegrass (Lolium multiflorum Lam.) expand the basal spacing of hydroxy potassium vermiculite (K-Vt) in the rhizosphere model with a clay-agar system, and to discuss that the action of the root exudates is regarded as a biosignal to release potassium ions from the interlayers of vermiculite clays.
Effect Of Slurry Application On Cell Wall Components And Silage Intake By Sheep Of Italian Ryegrass And Triticale,
2024
National Grassland Research Institute, Japan
Effect Of Slurry Application On Cell Wall Components And Silage Intake By Sheep Of Italian Ryegrass And Triticale, H Kawamoto, N Shimizu, R Uegaki, R Kobayashi
IGC Proceedings (1977-2023)
The study was to elucidate the effect of application of slurry manure from dairy cows on chemical components, the rumen degradation characteristics and silage intake by sheep of Italian ryegrass (Lolium multiflorum Lam.) and Triticale ( rye-wheat hybrid). The amounts of application of slurry were 0, 50, 100 and 150 t/ha. The increasing level of slurry application resulted in a decrease of lower digestible cell wall and an increase of degradation rate. The silage of 150 t /ha treatment was significantly more consumed by sheep than the other treatments (p<0.05). The changes in cell wall components in both quantity and quality by the slurry application were advantageous to the increase of voluntary dry matter intake of the forage.
Different Response Of Lucerne (Medicago Sativa L.) Cultivars To P And Zn Fertilization And Susceptibility To Phosphorus-Induced Zinc Deficiency On Calcareous Soils, Gansu, China,
2024
China-Australia Gansu Grassland Agriculture Systems Research
Different Response Of Lucerne (Medicago Sativa L.) Cultivars To P And Zn Fertilization And Susceptibility To Phosphorus-Induced Zinc Deficiency On Calcareous Soils, Gansu, China, Chen Wen, Graham Eagleton, Graeme Blair
IGC Proceedings (1977-2023)
The three pot experiments were carried out at the Qingyang Research Station, Gansu, China to determine the yield response of P and Zn, and examine the effect of soil types on P and Zn requirement of the local and introduced lucerne cultivars in the establishment phase on calcareous soils. The results showed marked growth and dry matter yield benefit at lucerne establishment when P fertiliser was applied on both soils. There were no consistent difference among the three cultivars in response to added P. A significant shoot yield response to Zn was only recorded at high P supply in the …
Application Of N And P Fertilizers On Pasture Of Southern Italy: Effects On Forage Species, Production And Quality,
2024
Istituto Sperirnentale Agronomico
Application Of N And P Fertilizers On Pasture Of Southern Italy: Effects On Forage Species, Production And Quality, D Ferri, G Convertini
IGC Proceedings (1977-2023)
The effects of N and P fertilization on the productive and qualitative characteristics of improved pastures in inside Southern Italy areas were investigated. The trial was carried out in two sites characterized by different altitude above sea level and soil properties; also previous fertilization treatments and botanical composition characteristics are significantly different. The N fertilization reduced negative effects of climatic variations (typical of these areas) on botanical composition of “Bella” grassland at lower altitude. On the contrary a more stable botanical composition assured good yields and quality of forage at “Li Foy” field (higher a.s.l.) because more regular weather conditions …
Sulphur And Phosphorus Responses Of Russell Lupin In Rangeland,
2024
Lincoln University
Sulphur And Phosphorus Responses Of Russell Lupin In Rangeland, P Jarvis, R J. Lucas, J.G. H. White
IGC Proceedings (1977-2023)
Russell lupin (Lupinus polyphyllus) was established by oversowing into low fertility, depleted tussock rangeland in 1990. The soil was low in phosphorus (P) and sulphur (S). P, (O, 12.5, 25 or 50 kg P /ha) and S (0 or 60 kg S/ha) were applied at sowing. In May 1994, a further 0 or 60 kg S /ha was applied as a sub-plot treatment. Lupin and grass dry matter (DM) was assessed in December 1995. Lupin did not grow in the absence of S. Lupin and grass responded to the additional S giving a maximum of 4.2 and 4.9 …
Raster Map For Prediction Of Heading Date Of Timothy By Nonparametric Dvr Method,
2024
Hokkaido National Agricultural Experiment Station
Raster Map For Prediction Of Heading Date Of Timothy By Nonparametric Dvr Method, T Saigusa, K Nakashima, N Noshiro, M Tsutsumi
IGC Proceedings (1977-2023)
A system for making a raster map for predicting the heading date of timothy (Phleum pratense L.) at first cutting for every 1km2 plot was developed to supply information for smooth harvest of forage of good quality in a dairy farming area of Hokkaido. Daily mean air temperature for every 1km2 plot was estimated with data from a network of meteorological observatories and data base of the Japan Meteorological Agency. Day length could be calculated from latitude and calendar day. Using these two environmental factors, heading date of timothy at first cutting for each area was predicted by nonparametric DVR …
Long-Term Effects Of Co2 Enrichment And Temperate Increase On Forage Quality In A Temperate Grass,
2024
SRNH, INRA
Long-Term Effects Of Co2 Enrichment And Temperate Increase On Forage Quality In A Temperate Grass, J F. Soussana, J M. Besle, I Chabaux, P Loiseau, P C. De Faccio Carvalho
IGC Proceedings (1977-2023)
Perennial ryegrass swards were grown during two years at two N fertilizer supplies in elevated (700 ppm) or ambient atmospheric CO2 concentration at outdoor temperature and at + 3°C in elevated CO2. Elevated CO2 and temperature increase had only minor impacts on the digestibility and on the fiber composition of the cut material. On average, the water soluble carbohydrate concentration of the leaf laminae was doubled in elevated CO2, whereas a 3°C temperature increase reduced this concentration by 25 %.
Co2 Enrichment And Temperature Effects On Productivity Of Field-Grown Phalaris And Subterranean Clover,
2024
CSIRO
Co2 Enrichment And Temperature Effects On Productivity Of Field-Grown Phalaris And Subterranean Clover, J M. Lilley, T P. Bolger, R M. Gifford
IGC Proceedings (1977-2023)
Pure and mixed swards of Phalaris aquatica and Trifolium subterraneum were exposed to cool (ambient) and warm (cool +3oC) temperatures, at both 380 and 690 ppm CO2 concentrations in field temperature gradient tunnels for 5 months. In general, clover and the mixture had similar forage productivity in each treatment, while phalaris was less productive. Elevated CO2 increased clover production 40% in the monoculture and the mixture. Higher temperatures reduced clover regrowth at ambient CO2 and reduced the response to elevated CO2 in the monoculture but not in the mixture. In contrast, phalaris regrowth in the monoculture was not increased by …
Growth Response Of Australian Temperate Pasture Species To Co2 Enrichment,
2024
CSIRO
Growth Response Of Australian Temperate Pasture Species To Co2 Enrichment, T P. Bolger, J M. Lilley, R M. Gifford, J R. Donnelly
IGC Proceedings (1977-2023)
Growth responses to a doubling of the atmospheric CO2 concentration for 15 species represented in temperate pastures of southern Australia were investigated in a glasshouse experiment. The final dry weight increase due to CO2 enrichment averaged 34% across species but varied widely. The variation in CO2 response was greater among species within botanical groups than it was among groups. The CO2 response of a number of ‘desirable’, but also a number of ‘undesirable’ species was greater than the mean response, suggesting that these species may increase their proportion in pastures as atmospheric CO2 rises. Our results do not support the …
