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Articles 661 - 690 of 13909
Full-Text Articles in Life Sciences
Effect Of Soil Source And Variety On The Heavy Metal Contents Of Guinea Grass, C. C. Anotaenwere, P. O. Bankole, P. A. Dele, Alaba O. Jolaosho
Effect Of Soil Source And Variety On The Heavy Metal Contents Of Guinea Grass, C. C. Anotaenwere, P. O. Bankole, P. A. Dele, Alaba O. Jolaosho
IGC Proceedings (1997-2023)
The aim of this study was to evaluate the heavy metal content in soils and grasses planted on selected contaminated soils. The study was a 3 x 2 factorial experiment in a completely randomized design comprising of two factors which are: 3 soil sources (i.e., industrial site, dump site and Fadama (a lowland around a river/stream) which was used as the control) and 2 varieties of Megathyrsus maximus (var. Local and Ntchisi) replicated four times. Soils were collected from the three sites and planting was done in a greenhouse. Soil samples were collected before and after planting. Samples of the …
Effect Of Nitrogen Source And Age At Harvest On The In Vitro Digestibility Of Oba Super Ii Maize Fodder, C. C. Anotaenwere, P. A. Dele, F. E. Salawu, B. T. Akinyemi, O. A. Okukenu, Alaba O. Jolaosho
Effect Of Nitrogen Source And Age At Harvest On The In Vitro Digestibility Of Oba Super Ii Maize Fodder, C. C. Anotaenwere, P. A. Dele, F. E. Salawu, B. T. Akinyemi, O. A. Okukenu, Alaba O. Jolaosho
IGC Proceedings (1997-2023)
This experiment was carried out in the Pasture Section of the Directorate of University farms and the laboratory of Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria, to evaluate the effect of nitrogen source (Swine manure, N.P.K. 15:15:15 as well as the control) and age at harvest on the in vitro gas production and digestibility of Oba Super II maize fodder. The experiment was in a split plot design. The nitrogen source was applied at the rate of 120 kgN/ha two weeks after planting. Maize was harvested at 8, 10 and 12 weeks after planting, oven …
Harvest Time Determine Biomass And Nutritive Value Of Forage Soybean In The Northwestern Loess Plateau Of China, An Dong, Jean Marie Vianney Nsigayehe, Y. Y. Shen
Harvest Time Determine Biomass And Nutritive Value Of Forage Soybean In The Northwestern Loess Plateau Of China, An Dong, Jean Marie Vianney Nsigayehe, Y. Y. Shen
IGC Proceedings (1997-2023)
Soybean is a critical legume crop, which can be used as high protein forage in a crop-forage rotation system to supplement forage and increase system productivity. According to the actual production demand, selecting a suitable harvest time and the best feeding variety of soybean can provide a theoretical basis for applying forage soybean in a rotation system. In this study, four forage soybean varieties were selected in the Loess Plateau of northwest China. They were harvested on three dates suitable for local rotation conditions, and their biomass and nutritive value were evaluated. At the early harvest (20 August), the nutritive …
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
IGC Proceedings (1997-2023)
Alfalfa autotoxicity causes yield reductions in alfalfa production by inhibiting plant establishment and decreasing plant productivity. Accurate predictions regarding autotoxic potential of the soil in a given field at a given time are an essential tool for alfalfa growers to make appropriate planting decisions. To address this issue, we are developing a soil bioassay that can be conducted as a mail-in soil test for alfalfa growers through plant diagnostic service laboratories. We hypothesize that we will detect differences in seed germination, emergence, root length, and root morphology between control and autotoxic soils. A preliminary trial testing alfalfa field soils and …
Phyllochron And Growth Dynamic Of Lolium Perenne L. And Bromus Valdivianus Phil. As Affected By Soil Ph, Phosphorus And Nitrogen Restriction, Oscar A. Balocchi, M. F. Alonso, I. Calvache
Phyllochron And Growth Dynamic Of Lolium Perenne L. And Bromus Valdivianus Phil. As Affected By Soil Ph, Phosphorus And Nitrogen Restriction, Oscar A. Balocchi, M. F. Alonso, I. Calvache
IGC Proceedings (1997-2023)
Permanent grasslands are the main food for livestock production systems in Southern Chile. Therefore, it is essential to develop management tools that optimize the use of pastures. Among these tools, the phyllochron could be a better method to control grazing frequency. The aim of this study was to determine the effect of three levels of soil pH, phosphorus (P) and nitrogen (N) on the phyllochron and growth dynamic of Lolium perenne and Bromus valdivianus. Nine monophytic mini-swards of each species were established in 125 L containers for three different pH, P and N levels. For one year we measured: …
Mass Production And Morphology Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, A. O. Matos, A. L. Bocchi, I. I. Silva, L. V. D. Ribeiro
Mass Production And Morphology Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, A. O. Matos, A. L. Bocchi, I. I. Silva, L. V. D. Ribeiro
IGC Proceedings (1997-2023)
Nitrogen is the nutrient that most contributes to increase forage productivity and quality. The objective was to evaluate Marandu brachiaria submitted to nitrogen doses in the Brazilian savannah through the total and green mass production, leaf:stem and brachiaria:weed ratio. Plots were established in a randomized block design, with four replications and four N doses 0, 50, 100 and 150 kg N/ha). After the uniformization cut, the data collect cycles occurred when the canopy reached 30 cm average height. Samples were taken until 15 cm from the ground in an area of 0.25 m2. Fractions were separated according botanical …
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
IGC Proceedings (1997-2023)
Alfalfa is the most important cultivated forage crop in Argentina, where about 3 million hectares are grown. Even though the use of direct grazing is coming down during the last 15 years, it is still important for both beef and dairy production. Alfalfa grazing can play an important role in reducing operative costs and decreasing quality loss due to forage conservation (hay or silage). In this paper, the main concepts necessary to implement adequate and practical rotational grazing systems are briefly discussed. Particular attention is given to issues such as grazing frequency, grazing period, pasture use efficiency, and alfalfa quality …
Genetic Improvement Of Bermudagrass For Hay Producers, W. F. Anderson, L. Baxter, R. N. Gates, E. Rios
Genetic Improvement Of Bermudagrass For Hay Producers, W. F. Anderson, L. Baxter, R. N. Gates, E. Rios
IGC Proceedings (1997-2023)
Bermudagrass (Cynodon spp.) is considered the most valuable warm-season perennial grass for hay producers in the Southeastern United States. Bermudagrass genotypes have overall good forage quality, high yields, and store well. However, there are challenges to producing good hay for the market. First, early green-up in the spring is needed to allow for four to five productive clippings during the summer. When first establishing production fields, quick emergence and cover are important for reducing weeds. Forage bermudagrass is somewhat tolerant to drought, however, low rainfall substantially reduces yields. If rainfall is too abundant, it is difficult to have timely …
Genetic Variability Of Lucerne Landraces From Central Italy Detected By Rapd Markers, L Russi, G Barcaccia, M Falcinelli, F Veronesi
Genetic Variability Of Lucerne Landraces From Central Italy Detected By Rapd Markers, L Russi, G Barcaccia, M Falcinelli, F Veronesi
IGC Proceedings (1997-2023)
With the aim to characterize six lucerne landraces (Medicago sativa L.), representing a sample of a collection from central Italy, sixty individuals per landrace were evaluated by screening for RAPD markers with three lucerne-specific primers. Twenty-one amplification products were scored as present or absent across all plants. The dendrogram from mean genetic similarity estimates displayed Casalina alone and the other landraces clustered into one distinct group, showing a single branch point with more than 73% of genetic similarity. The discriminant analysis grouped the landraces in a similar manner. The first function maximally separated the group Grosseto, Gubbio and C. …
Amphicarpic Legumes For Tropical Pasture Persistence, R Schultze-Kraft, A Schmidt, H Hohn
Amphicarpic Legumes For Tropical Pasture Persistence, R Schultze-Kraft, A Schmidt, H Hohn
IGC Proceedings (1997-2023)
Amphicarpy, by which a plant produces underground seeds in addition to aerial fruits, is found in many plant families and in species of at least 15 legume genera. First studies on the tropical Centrosema rotundifolium and subtropical Macroptilium panduratum revealed for both species, besides their stoloniferous growth habit, two important mechanisms for survival under unfavorable conditions: (1) Underground meristems and reserve organs, and (2) regeneration from a soil seed reserve based on underground, aerial-flowering independent, seed production. Underground seed production was for both species particularly high on very sandy soils, but amphicarpy enables the plants to exhibit a plasticity response …
Impact Of Type Of K Fertilizer On Dcad Of Fen Grassland In Northeast Germany, A. Behrendt, J. Pickert, F. Eulenstein, B. Kroschewski
Impact Of Type Of K Fertilizer On Dcad Of Fen Grassland In Northeast Germany, A. Behrendt, J. Pickert, F. Eulenstein, B. Kroschewski
IGC Proceedings (1997-2023)
A lower DCAD is required in the diet fed during the prepartum period, but increasing the DCAD of diets fed during lactation increased milk yield and dry matter intake (Overton 2020). We conducted 3 cutting date/type of fertilizer trials, harvested with 5, 4 and 3 cuts per year over 3 years. Compared to the chloride based K fertilizer, the application of a sulphate based K fertilizer did not change dry matter yield and fodder quality (NEL-, XP-content) but led to significant higher DCAD in the grass in cut 1 - 3 of all trials over 3 years. The increase of …
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
IGC Proceedings (1997-2023)
Native perennial warm-season grasses (NWSGs) of the United States (U.S.) provide valuable summer forage. Studies have shown their potential within grazing systems as a complement to cool-season forages, as well as their benefits to soil biota, wildlife biodiversity, carbon sequestration and their resiliency to extreme drought and flood events. In this paper, we demonstrate that, in addition to these benefits, NWSGs provide important economic value to beef and dairy producers as a hedge against financial risks posed by overreliance on cool-season grasses.
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
IGC Proceedings (1997-2023)
The onset of climate change brings many challenges for forage production in the southeastern United States, where it is projected to become hotter and dryer in the next century. To combat this climatic challenge, recurrent phenotypic selection was conducted in growth chambers on annual ryegrass (Lolium multiflorum Lam.) and orchardgrass (Dactylis glomerata L.) to select seedlings that can germinate and survive at temperatures of 40°C. Following three cycles of selection, germination was increased from < 5% to 45% in annual ryegrass, and from 20% to 80% in orchardgrass. The rate of germination also increased, in both species by a factor of 8x that of the base germplasm. Realized heritability also increased by 40 – 45% for each species by the end of the project. This work successfully improved a quantitative trait using recurrent phenotypic selection using growth chambers as a stable environment and provided the basis for combatting climate change in other outcrossing forage species.
Breeding Small Grains As A Forage, Silage And Cover Crop For The Southern Coastal Plain (Usa) In A Changing Climatic Environment, A. Blount, Marcelo O. Wallau, S. A. Harrison, Cheryl L. Mackowiak, A. Babar, José C. B. Dubeux Jr.
Breeding Small Grains As A Forage, Silage And Cover Crop For The Southern Coastal Plain (Usa) In A Changing Climatic Environment, A. Blount, Marcelo O. Wallau, S. A. Harrison, Cheryl L. Mackowiak, A. Babar, José C. B. Dubeux Jr.
IGC Proceedings (1997-2023)
Forage breeding of small grains in the southern Coastal Plains region of the U.S. mimic many other countries experiencing climate changes and breeding strategies should be similar for improving small grains grown for forage, silage or as cover crops. Significant focus on improvements in stress-adaptation has encouraged members of the SunGrains cooperative to cross, evaluate and develop experimental lines with inherent adaptation to climatic conditions including heat stress, drought tolerance, short-day and long-day forage production periods, and flooded conditions for events with storm-related, short-term durations. Many new cultivars, grown throughout the southeastern U.S. have resulted from breeding selection under abiotic …
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.; aka lucerne) acreage is low in comparison to perennial grasses in warm humid regions. This includes the tropics and subtropics, and in the USA, the Southeastern states. The alfalfa seed industry therefore saw few reasons to target sales and marketing in these regions. This overlooked logical opportunities. In this paper, these opportunities are examined for Southeastern USA. The Southeast contains a majority of beef herd, a high percentage of the dairy herd, and millions of acres suitable for conversion to alfalfa. Alfalfa is also now viewed as the best crop to solve problems inherent with …
Cooperative Evaluation Of Western Hemisphere Grassland Germplasm In Inner Mongolia, Prc, L K. Holzworth, Gu Anlin, J G. Scheetz, M E. Majerus
Cooperative Evaluation Of Western Hemisphere Grassland Germplasm In Inner Mongolia, Prc, L K. Holzworth, Gu Anlin, J G. Scheetz, M E. Majerus
IGC Proceedings (1997-2023)
Replicated studies were established jointly by Chinese and American scientists in central Inner Mongolia. Both Asian and North American plant materials were included. Results of the Chinese plots show USA saline-tolerant species have potential to assist the Chinese with saline soil reclamation. On saline sites, USA cultivars rated the best stands and had the highest yields. Generally, Chinese desert steppe species outperformed USA upland entries with the Chinese legumes establishing the best stands and producing the most biomass.
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
IGC Proceedings (1997-2023)
The objective was to compare palatability with different methodologies for characterizing silages at Chapingo Autonomous University, México. Eight silages were used resulting from an experiment which evaluated effects of cutting time (08:00 and 14:00), time of wilting (0, 1 and 2 h) and use of lactic bacteria inoculant on properties of alfalfa (Medicago sativa L.) and orchard grass (Dactylis glomerata L.) silages. Organoleptic properties (odor, color, texture, moisture) were assessed by trained observers, using as categories: excellent, good, fair and poor. Dry matter content, CO2 rate of production and pH were also measured. For the evaluation of …
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
IGC Proceedings (1997-2023)
Clovers (Trifolium spp.) are the most widely used genera of legumes in forage systems, although only a limited number of the hundreds of perennial and annual species are commercially available. The number of varieties available within each of the main commercial species can be high and demonstrates past breeding achievements. Success relates to any clover’s ability to persist in mixtures with other forage species, across a range of soil types, management systems, and climates, while providing animal nutrition and biologically fixed nitrogen benefits. Uses range from traditional pasture mixtures with grasses to inclusion in multi-species mixtures, and as cover …
Economic Benefits Of Sustainable, Forage-Based Cattle Systems In Colombia And Nicaragua, S. Burkart, K. Enciso, M. Diaz, R. Van Der Hoek
Economic Benefits Of Sustainable, Forage-Based Cattle Systems In Colombia And Nicaragua, S. Burkart, K. Enciso, M. Diaz, R. Van Der Hoek
IGC Proceedings (1997-2023)
Forage-based cattle systems play a key role in rural economies of developing countries in terms of food security and poverty alleviation, particularly in tropical Latin America. However, they are often related to being a major cause of negative environmental impacts by contributing to increased greenhouse gas emissions, land degradation, and the reduction of biodiversity. Significant resources have been allocated to research and development in forage material improvement, including selection and breeding. A broad range of improved materials were released by private and public sector actors showing superior characteristics in terms of productivity and environmental impacts compared to native or naturalized …
Fermentation Control And Ethanol Production Of Total Mixed Ration Prepared With Apple Pomace And Microbial And Chemical Additives, J. Fang, Yimin Cai
Fermentation Control And Ethanol Production Of Total Mixed Ration Prepared With Apple Pomace And Microbial And Chemical Additives, J. Fang, Yimin Cai
IGC Proceedings (1997-2023)
The objective of this study is to evaluate the impacts of moisture adjustment, lactic acid bacteria (LAB) inoculant and chemical additives on fermentation characteristics and ethanol production of a total mixed ration (TMR) containing apple (Malus domestica) pomace. The TMR was prepared with apple pomace, corn, wheat bran, soybean meal, timothy, and alfalfa hay. In Experiment 1, the proportion of apple pomace was 150 g/kg of dry matter (DM), and the moisture of the TMR was unadjusted (control) or adjusted to 450, 500, and 550 g/kg, respectively. In Experiment 2, the same ingredient proportions as in experiment 1 …
Modelling Leucaena Biomass Under Rainfed Production Systems Of Semiarid Regions, M. J. D. Cândido, J. L. G. Santos, A. C. R. Cavalcante, S. R. Maranhão, M. A. Santos, J. M. Osorio Leyton
Modelling Leucaena Biomass Under Rainfed Production Systems Of Semiarid Regions, M. J. D. Cândido, J. L. G. Santos, A. C. R. Cavalcante, S. R. Maranhão, M. A. Santos, J. M. Osorio Leyton
IGC Proceedings (1997-2023)
The climatic variability of semiarid regions is the main source of uncertainties associated with forage and animal production, indicating a need for tools that accurately estimate forage production in order to construct a forage budgeting plan for livestock. This study simulated the biomass of Leucaena (Leucaena leucocephala) using the PHYGROW model in four locations located in Brazilian Semiarid. The work was carried out based on field data collected from 2019 to 2021. After sowing in 2018, leucaena was harvested when it reached 200 cm and to a target residual height of 70 cm. The biomass (fresh matter) was …
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
IGC Proceedings (1997-2023)
Understanding relationships among canopy light interception (LI), canopy height and structure, and leaf area index (LAI) informs management decisions and can improve efficiency of forage-livestock systems. In a long-term experiment in Florida, USA, we assessed the LI, LAI and sward height relationships of rhizoma peanut (Arachis glabrata Benth., RP)-bahiagrass (Paspalum notatum Flügge) mixed swards compared with bahiagrass monoculture to determine whether changes in canopy structure affect herbage accumulation (HA) rate due to changes in radiation use. Treatments were arranged in a semi-factorial, split-plot design (r=4). Bahiagrass monoculture and bahiagrass-RP mixtures were whole-plot treatments. Sub-plot treatments were an undefoliated …
3rd Annual Hu Research Symposium Program 2021, Akeisha Belgrave, Erica Ward, Rebekah Harriger
3rd Annual Hu Research Symposium Program 2021, Akeisha Belgrave, Erica Ward, Rebekah Harriger
Harrisburg University Research Symposium: Highlighting Research, Innovation, & Creativity
3rd Annual HU Research Symposium program and schedule of presenters. Presentations were held April 21st, 2021 virtually on the Teams platform.
Effectiveness And Cost Of Shrub Removal Methods In Degraded Woodlands Being Converted To Silvopasture, S. Cartoni-Casamitjana, M. J. Renz
Effectiveness And Cost Of Shrub Removal Methods In Degraded Woodlands Being Converted To Silvopasture, S. Cartoni-Casamitjana, M. J. Renz
IGC Proceedings (1997-2023)
Transforming degraded woodlands to silvopasture is of interest in the Midwestern USA as it increases profitability of farms and benefits animal health. Invasive shrubs within woodlands, however, are a major obstacle to silvopasture establishment. Research was undertaken to evaluate the effectiveness, cost and resulting herbaceous canopy light interception of common brush-control methods when used alone or integrated over a two-year timeframe. Five treatments were established in a randomized complete block design. In the first year, treatments were either forestry mowed (mow) or rotationally grazed by goats (goats) at a stocking density of 5700 to 6000 kg per hectare. In the …
Herbage Accumulation And Mass In Massai Grass Plots Mixed With Forage Peanut And Fertilized With Nitrogen, Carlos A. B. Carvalho, M. O. Leal Junior, P. P. Carneiro, J. V. B. Ramos, N. Schultz, J. C. C. Almeida, A. J. Paiva
Herbage Accumulation And Mass In Massai Grass Plots Mixed With Forage Peanut And Fertilized With Nitrogen, Carlos A. B. Carvalho, M. O. Leal Junior, P. P. Carneiro, J. V. B. Ramos, N. Schultz, J. C. C. Almeida, A. J. Paiva
IGC Proceedings (1997-2023)
The objective of this work was to evaluate herbage accumulation and mass during the growing season of Massai grass mixed with peanut forage and fertilized with nitrogen. The work was carried out at Federal Rural University of Rio de Janeiro, Brazil, from 11/2021 to 03/2022. A randomized block experimental design was used, in plots of Massai grass Megathyrsus maximus, in a factorial arrangement, with seven replications. Four treatments formed by the combination of the presence or absence of Archis pintoi and nitrogen fertilization (0 and 50 kg ha-1 of N). Canopy heights of the plots were evaluated weekly …
Brs Sarandi: A New Andropogon Gayanus Cultivar For Tropical Pastures, Marcelo A. Carvalho, C. E. F. Lazarini, Allan K. B. Ramos, Gustavo J. Braga, Claudio T. Karia
Brs Sarandi: A New Andropogon Gayanus Cultivar For Tropical Pastures, Marcelo A. Carvalho, C. E. F. Lazarini, Allan K. B. Ramos, Gustavo J. Braga, Claudio T. Karia
IGC Proceedings (1997-2023)
BRS Sarandi is adapted to low and medium fertility soils. It has a medium-high height, with a semi-erect growth habit and a high total number of tillers. The annual productivity of dry matter is 11 t ha-1, concentrated in the rainy season (90%). Of the total DM produced, 60% are leaves. The levels of crude protein (CP), in vitro dry matter digestibility (IVDMD), neutral detergent fiber (NDF) and acid detergent fiber (ADF) are, on average, 8.7, 56.5, 66.7 and 38.2%, respectively. . The average daily weight gain was 0.7 kg/head/day, the gain per was and 1.7 kg ha-1 day with …
The Molecular Mechanism Of Seed Physical Dormancy In Legume Forage, Maofeng Chai, Z. Wen, Hui Li, Z-Y. Wang
The Molecular Mechanism Of Seed Physical Dormancy In Legume Forage, Maofeng Chai, Z. Wen, Hui Li, Z-Y. Wang
IGC Proceedings (1997-2023)
Legume forage seeds have evolved a specific dormancy trait, physical dormancy, to inhibit germination until favorable conditions appear. Physical dormancy is an adaptive trait that widely exists in higher plants and plays a vital role in maintaining natural seed banks. This kind of dormancy is caused by a waterimpermeable layer that blocks water and oxygen from the surrounding environment. The outermost cuticle of the seed coat is critical for establishing seed physical dormancy. The molecular mechanism underlying physical dormancy remains largely elusive. Using Medicago (Medicago truncatula) as a model, we set up the legume plant to study seed …
Production And Management Simulation Of Family Pasture In Different Pastoral Areas Based On Ommlp Model, Chen Chen, G. D. Han, Z. G. Li, S. J. Lv
Production And Management Simulation Of Family Pasture In Different Pastoral Areas Based On Ommlp Model, Chen Chen, G. D. Han, Z. G. Li, S. J. Lv
IGC Proceedings (1997-2023)
Family ranch grassland livestock production optimal management model was used to simulate the grassland supply and livestock demand, family economic status under different stocking rates senarion with collection of grassland, livestock, and economics data from Wuzhumuqin Banner and Tongliao as two types of pastoral areas in Inner Mongolia Autonomous Region. The livestock is grazing all year long in Wuzhumuqin Banner, but the livestock is grazing in summer and feeding in hovel in winter in Tongliao, which we call it as semi-farming and semi-pastoral area. The results showed that summer grassland productivity could meet the energy demand of livestock. As the …
Mass Production And Morphology Of Brauna Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, E. A. Collao-Saenz, M. F. P. Carvalho, P. S. Ribeiro, R. A. De O. Rodrigues, T. A. Cavalcante
Mass Production And Morphology Of Brauna Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, E. A. Collao-Saenz, M. F. P. Carvalho, P. S. Ribeiro, R. A. De O. Rodrigues, T. A. Cavalcante
IGC Proceedings (1997-2023)
Nitrogen is the nutrient that most contributes to increase forage productivity and quality. The objective was to evaluate Brauna brachiaria (Urochloa brizantha cv. Brauna) submitted to nitrogen doses in the Brazilian savannah through the total and green mass production, leaf:stem and brachiaria:weed ratio. Plots were established in a randomized block design, with four replications and four N doses 0, 50, 100 and 150 kg N/ha). After the uniformization cut, the data collect cycles occurred when the canopy reached 30 cm average height. Samples were taken until 15 cm from the ground in an area of 0.25 m2 . …
Persistence Of Perennial Ryegrass, Tall Fescue And Cocksfoot Following Sequential Annual Sowings: Influence Of Species, Cultivar And Pasture Age On Inter-Annual Variability In Yield And Botanical Composition, G. P. Cosgrove, T. R. Maxwell, B. Wynne-Jones, G. R. Edwards, M. R. Staincliffe, Katherine N. Tozer
Persistence Of Perennial Ryegrass, Tall Fescue And Cocksfoot Following Sequential Annual Sowings: Influence Of Species, Cultivar And Pasture Age On Inter-Annual Variability In Yield And Botanical Composition, G. P. Cosgrove, T. R. Maxwell, B. Wynne-Jones, G. R. Edwards, M. R. Staincliffe, Katherine N. Tozer
IGC Proceedings (1997-2023)
The persistence of sown, temperate pasture species is an important determinant of perennial pasture-grass productivity. Defining the traits that affect persistence is essential for improving pasture longevity through plant breeding and for identifying criteria that should be included in cultivar ranking indices such as the DairyNZ, Forage Value Index. Compared with a conventional longitudinal study, in which pasture from a single sowing is monitored over time, repeated annual sowings allow the effects on persistence of sowing year and the ensuing interactions between environment and age of pasture to be identified. A repeated sowings experiment was commenced at two sites: under …