Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (2600)
- Earth Sciences (2557)
- Computer Sciences (1976)
- Plant Sciences (1912)
- Soil Science (1886)
-
- Agronomy and Crop Sciences (1856)
- Agricultural Science (1832)
- Weed Science (1832)
- Plant Biology (1825)
- Plant Pathology (1820)
- Environmental Sciences (1277)
- Engineering (1122)
- Mathematics (812)
- Artificial Intelligence and Robotics (739)
- Chemistry (727)
- Physics (703)
- Social and Behavioral Sciences (595)
- Medicine and Health Sciences (549)
- Sustainability (404)
- Statistics and Probability (362)
- Oceanography and Atmospheric Sciences and Meteorology (342)
- Education (341)
- Applied Mathematics (338)
- Environmental Monitoring (305)
- Environmental Indicators and Impact Assessment (277)
- Computer Engineering (275)
- Data Science (275)
- Environmental Health and Protection (263)
- Arts and Humanities (262)
- Institution
-
- University of Kentucky (1864)
- Singapore Management University (328)
- Old Dominion University (253)
- TÜBİTAK (182)
- Missouri University of Science and Technology (181)
-
- Montana Tech Library (181)
- University of Nebraska - Lincoln (175)
- China Coal Technology and Engineering Group (CCTEG) (171)
- China Simulation Federation (159)
- University of Texas Rio Grande Valley (155)
- Portland State University (147)
- Utah State University (119)
- Claremont Colleges (115)
- Michigan Technological University (94)
- Chapman University (93)
- Western Washington University (92)
- University of Texas at El Paso (90)
- Edith Cowan University (88)
- Kennesaw State University (88)
- Association of Arab Universities (86)
- University of New Mexico (84)
- Virginia Commonwealth University (80)
- City University of New York (CUNY) (75)
- Chinese Academy of Sciences (73)
- Clemson University (69)
- Dartmouth College (69)
- University of Tennessee, Knoxville (67)
- Zayed University (65)
- East Tennessee State University (62)
- Roseman University of Health Sciences (61)
- Keyword
-
- Machine learning (151)
- Grazing (133)
- Artificial intelligence (121)
- Climate change (95)
- Deep learning (82)
-
- Trifolium repens (67)
- Sustainability (66)
- Machine Learning (64)
- Sheep (62)
- Cattle (55)
- Artificial Intelligence (54)
- Lolium perenne (51)
- Technical Reports (51)
- UTEP Computer Science Department (51)
- Nitrogen (50)
- Forage quality (46)
- Weather (40)
- Forage (39)
- Persistence (39)
- Deep Learning (38)
- Management (38)
- Optimization (38)
- Pasture (38)
- AI (37)
- Climate (37)
- Internship (37)
- Simulation (36)
- Conservation (35)
- Cybersecurity (35)
- Mathematics (35)
- Publication
-
- IGC Proceedings (1993-2023) (1818)
- Research Collection School Of Computing and Information Systems (283)
- Silver Bow Creek/Butte Area Superfund Site (179)
- Theses and Dissertations (178)
- Coal Geology & Exploration (171)
-
- Journal of System Simulation (159)
- Electronic Theses and Dissertations (122)
- Research outputs 2022 to 2026 (87)
- Journal of Engineering Research (83)
- Bulletin of Chinese Academy of Sciences (Chinese Version) (73)
- Michigan Tech Publications, Part 2 (66)
- All Works (65)
- Annual Research Symposium (61)
- Branch Mathematics and Statistics Faculty and Staff Publications (61)
- Journal of Humanistic Mathematics (59)
- ASEAN Journal on Science and Technology for Development (58)
- Doctoral Dissertations (58)
- Honors Theses (58)
- C-Day Computing Showcase (57)
- All Graduate Theses and Dissertations, Fall 2023 to Present (53)
- Biology and Medicine Through Mathematics Conference (53)
- Turkish Journal of Chemistry (52)
- Departmental Technical Reports (CS) (51)
- School of Mathematical and Statistical Sciences Faculty Publications and Presentations (51)
- Dissertations, Theses, and Capstone Projects (50)
- Turkish Journal of Mathematics (48)
- Faculty Scholarship (47)
- Master's Theses (46)
- Masters Theses (46)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (45)
- Publication Type
Articles 2551 - 2580 of 8315
Full-Text Articles in Physical Sciences and Mathematics
Legume-Legume Complementary For Sustainable Pasture Development In The Tropics, M Peters, S A. Tarawali, R Schultze-Kraft, A Musa
Legume-Legume Complementary For Sustainable Pasture Development In The Tropics, M Peters, S A. Tarawali, R Schultze-Kraft, A Musa
IGC Proceedings (1993-2023)
The use of legume-legume mixtures to alleviate limitations of individual species in legume based technologies was investigated in subhumid Nigeria. The results indicate the potential of legume mixtures, through processes of complementation and compensation, to reduce the risk of legume establishment and survival and thus ensure sustainable legume yields and percentages. The implications for on-farm adoption of forage legumes are discussed.
Grass-Legume Mixtures Under Grazing, R D. Amendola Massiotti, C Garcia Alvarez, J Juarez Ramirez
Grass-Legume Mixtures Under Grazing, R D. Amendola Massiotti, C Garcia Alvarez, J Juarez Ramirez
IGC Proceedings (1993-2023)
Nine grass-legume mixtures were evaluated during their first year. A factorial experiment was carried out using a complete block design. Herbage on offer and residual herbage were estimated allowing calculation of net herbage production, herbage accumulation rate and grazing efficiency. The mixture of alfalfa (Medicago sativa L.) and orchard grass (Dactylis glomerata L.) with a net herbage production of 22 407 kg dry matter (DM) per ha outyielded white clover (Trifolium repens L.) mixtures. Substitution of alfalfa by white clover in the mixtures resulted in reduction of herbage accumulation rate by 19 kg DM ha-1 day-1 . …
Competition Between Oats And Annual Ryegrass Under Grazing, R D. Amendola Massiotti, B Morales Mendez
Competition Between Oats And Annual Ryegrass Under Grazing, R D. Amendola Massiotti, B Morales Mendez
IGC Proceedings (1993-2023)
A replacement series experiment was carried out at Chapingo, México aimed to study the seasonal evolution of growth rates of oats (Avena sativa L.) and annual ryegrass (Lolium multiflorum L.) in monocultures and mixtures. Three grazing cycles took place in a period of 181 days. Herbage mass on offer and residual herbage mass were measured, allowing the calculation of herbage accumulation rates. Aggressiveness of oats was higher during the first 105 days growth period, later in the season annual ryegrass was more aggressive than oats. The advantage of the mixture compared to monocultures, depends on a more efficient …
Effects Of Planting Dates On Field Emergence And Forage Yield Of Sudangrass And Sorghum, Fu-Hsing Hsu, Kong-Yuan Hong
Effects Of Planting Dates On Field Emergence And Forage Yield Of Sudangrass And Sorghum, Fu-Hsing Hsu, Kong-Yuan Hong
IGC Proceedings (1993-2023)
Sudangrass (Sorghum sudanense) and sorghum (S. bicolor) are annual forage species with ratoon growth. Objectives of this experiment were to determine the effects of planting dates on field emergence and forage yield of sudangrass and sorghum. Sudangrass and sorghum were planted monthly from mid-March to mid-October in 1994 and 1995, respectively. Emerged plants were recorded daily. Surviving seedlings were determined 2 weeks after emergence. Emergence percentages of sudangrass ranged from 61.7% to 90.6% and those of sorghum ranged from 47.5% to 81.3% in 1994. All the surviving percentages were above 90% for both sudangrass and sorghum in 1994. …
The Induction Of Dormancy In Grass Seed By Paclobutrazol: A Method To Improve Fall Seedings, P R. Salon, A A. Khan
The Induction Of Dormancy In Grass Seed By Paclobutrazol: A Method To Improve Fall Seedings, P R. Salon, A A. Khan
IGC Proceedings (1993-2023)
Dormancy can be induced in grass seeds by soaking in aqueous solution of gibberellin synthesis inhibitors, such as paclobutrazol and tetcyclacis. In a study conducted with perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinaceae Schreb.), dormancy was induced by a 48 hour soak at 35° C in 100 micromolar tetcyclacis (TCY) and 100 micromolar paclobutrazol (PB) as determined by failure to emerge at 20° C. Emergence in the untreated, water soaked, TCY soaked and PB soaked seeds were 92, 92, 10 and 18 % respectively. The containers containing seed and seedlings were then held at 5°C …
Growth Of Heifers And Changes In Vegetation In A Natural Grassland Oversown With Caribbean Stylo, Vinod Shankar, J N. Gupta, V S. Upadhyay
Growth Of Heifers And Changes In Vegetation In A Natural Grassland Oversown With Caribbean Stylo, Vinod Shankar, J N. Gupta, V S. Upadhyay
IGC Proceedings (1993-2023)
The paper reports a three year study on the growth of heifers and vegetational changes in a natural grassland oversown with caribbean stylo and grazed in a deferred- rotational grazing system. There were two feeding treatments. One set of grazing heifers was given common salt only. The other set of heifers were given supplemental feeding of leucaena green @4 per cent or Leucaena hay @ 1 per cent body weight. The supplemental feeding of leucaena was beneficial in terms of body weight gain particularly during the dry summer months. Population of the caribbean stylo oversown in natural Sehima- Heteropogon …
Grazing Strategies To Increase Persistence Of Phalaris Aquatica L. In Summer Rainfall Areas Of Temperate Australia, G M. Lodge
IGC Proceedings (1993-2023)
A grazing strategy of resting Phalaris aquatica L. pastures in springearly summer (to increase the presence of flowering tillers over summer) and autumn (to allow bud and tiller development) markedly increased its persistence, compared with continuously grazed plots in a summer rainfall environment.
Impact Of A Pastoral Fallow On The Morphology And Growth Of White Clover (Trifolium Repens L.) In New Zealand Hill Pasture, Z N. Nie, I Valentine, D J. Barker, A D. Mackay, J Hodgson
Impact Of A Pastoral Fallow On The Morphology And Growth Of White Clover (Trifolium Repens L.) In New Zealand Hill Pasture, Z N. Nie, I Valentine, D J. Barker, A D. Mackay, J Hodgson
IGC Proceedings (1993-2023)
Lifting the content and improving the distribution of perennial legumes such as white clover (Trifolium repens L.) of hill pastures in New Zealand is a major objective of a pasture improvement programme. This paper reports on the ecology of white clover over a 2 year post-fallow period. The fallow was a 7 month period without defoliation over spring-summer-autumn. The stolon length and weight of white clover increased from year 1 (94/95) to year 2 (95/ 96) post-fallowing (P<0.1 and 0.05, respectively), while the average internode length declined (P<0.05). However, the white clover growth rate was not significantly increased in the two measurement years. Fallowing significantly increased grass growth rate (P<0.05) in the two years post-fallowing. The grasses seemed to have an immediate response post-fallowing, while the response of white clover was slower and cumulative.
The Potential Of Winter Rye Cultivars In The Gauteng Province Of South Africa, C C. Botha, N.F. G. Rethman
The Potential Of Winter Rye Cultivars In The Gauteng Province Of South Africa, C C. Botha, N.F. G. Rethman
IGC Proceedings (1993-2023)
Trials were conducted at the Hatfield Experimental Farm to evaluate eight rye cultivars (Secale cereale) in terms of production and development during different seasons. These consisted of a pot experiment, comparing two water regimes, and a field trial, comprising different planting dates, in order to observe phenological development. SSR 729, a South African winter rye, and imported cultivars compared favourably with the traditional cultivars. The winter rye cultivars are good substitutes for the “old” cultivars for the production of green forage in the autumn/winter period.
Analysis Of Pasture Management Practices Within A Pasture Composition Matrix Model, D R. Kemp, D L. Michalk, P M. Dowling, T A. Klein
Analysis Of Pasture Management Practices Within A Pasture Composition Matrix Model, D R. Kemp, D L. Michalk, P M. Dowling, T A. Klein
IGC Proceedings (1993-2023)
In extensive livestock industries better pasture management is seen as the main strategy to improve poor quality pastures, or to maintain newly sown ones. Pasture management practices need to be evaluated within a framework that considers the desirability of changes in species composition rather than simply considering the statistical significance of the results. This can be done through the state and transition model used in rangelands management, but difficulties were found when applying that model to temperate perennial pastures as the interactions between species often showed continuous distributions. An alternative pasture composition matrix model based on the ratios of functional …
Productivity Of Silphium Perfoliatum L. In Low Input Agricultural Systems, G Pichard, R Cussen, F Moore
Productivity Of Silphium Perfoliatum L. In Low Input Agricultural Systems, G Pichard, R Cussen, F Moore
IGC Proceedings (1993-2023)
There is a large area in the coastal region of southern Chile affected by low productivity of soils and severe climatic limitations, which is owned mainly by small farmers. This research was conducted with dairy farmers producing an average of 20,000 liters/year whose main problem is cattle underfeeding because of severe seasonal cycles in pasture growth and extended overgrazing of natural grasslands of low production potential. Silphium perfoliatum L. is a perennial forage species that grows well during the summer period when grasslands have stopped their growth due to moisture stress and high temperatures. Based on the agronomic results and …
Dry Matter Production And Nutritive Value Of Forage Of Digitaria Eriantha Cv. Irene In Two Locations Of The Central Semi-Arid Region Of Argentina, C A. Frasinelli, H J. Petruzzi, J H. Veneciano, C M. Ferri, V V. Jouve, N P. Stritzler, O A. Terenti
Dry Matter Production And Nutritive Value Of Forage Of Digitaria Eriantha Cv. Irene In Two Locations Of The Central Semi-Arid Region Of Argentina, C A. Frasinelli, H J. Petruzzi, J H. Veneciano, C M. Ferri, V V. Jouve, N P. Stritzler, O A. Terenti
IGC Proceedings (1993-2023)
The aim of this experiment was to compare dry matter (DM) production rates and nutritive value of a warm-season grass, Digitaria eriantha cv. Irene, in two locations of Central Argentina, Santa Rosa (SR) and Villa Mercedes (VM). The plants were established in two identical groups of plots, within a randomized block design. DM rates were calculated from serial, out of phase clippings, and in vitro dry matter digestibility (IVDMD) and crude protein (CP) content analyzed on subsamples. The study lasted for three consecutive growing seasons. Results showed that DM production rates were generally higher (P<0.05) in SR than in VM, but IVDMD and CP content showed no clear trends between both locations. DM production tended to lower from year 1 to 3, related to processes of N depletion from soils (VM) and diminishing rainfall (SR). It is concluded that D.eriantha is a very promising warm-season grass to Central Argentina. Data of nutritive value obtained in one location can be used in others, but results of DM production rates should be taken under the conditions where they will be used.
Pasture Species For Grazing-Based Dairy Production Under Irrigated In The Intermountain West, J W. Macadam, R E. Whitesides, M B. Winger, S Buffler
Pasture Species For Grazing-Based Dairy Production Under Irrigated In The Intermountain West, J W. Macadam, R E. Whitesides, M B. Winger, S Buffler
IGC Proceedings (1993-2023)
Forage trials were established in response to producer interest in grazing-based dairy production. The quantity and seasonal distribution of yield of tall fescue (Festuca arundinacea Schreb.), orchardgrass (Dactylis glomerata L.), white clover (Trifolium repens var. giganteum L.), birdsfoot trefoil (Lotus corniculatus L.), and cicer milkvetch (Astragalus cicer L.) harvested three times were similar, with about half the production occurring in June. Legume quality was higher in June, and quality for all species was highest in late summer. Yields of perennial ryegrass (Lolium perenne L.), meadow bromegrass (Bromus riparius Rehm.) and Kentucky bluegrass (Poa pratensis …
Interpreting Guineagrass Behaviour Under Different Clipping, Nitrogen And Irradiance Regimesa, A Paez, M E. Gonzalez, L Villavicencio, A Salazar, D Tissue
Interpreting Guineagrass Behaviour Under Different Clipping, Nitrogen And Irradiance Regimesa, A Paez, M E. Gonzalez, L Villavicencio, A Salazar, D Tissue
IGC Proceedings (1993-2023)
An increase in the photosynthetic rate of the remaining tissues or regrowth has been proposed to explain compensatory growth after defoliation. In fact, we observed this effect in guineagrass, but it was not solely related to higher stomatal conductance. Nitrogen and irradiance may influence this response in the field, interacting with clipping. The objective of this research was to determine if these factors alter photosynthesis of intensively clipped well-watered guineagrass. Plants grown in a soil mixture were placed in the shade and in full sunlight. After establishment, some plants in each irradiance were clipped monthly at 20-cm, and the others …
Separate Harvest Of Leaves From The Stems Of Lucerne Stands, L Schmidt
Separate Harvest Of Leaves From The Stems Of Lucerne Stands, L Schmidt
IGC Proceedings (1993-2023)
Lucerne leaves have significantly higher crude protein and lower crude fibre contents than the stems. The present methods for separating the leaves from the stems have serious deficiencies. Early harvesting, for example, weakens the lucerne stand, and sifting after artificial drying impairs quality. Above that, preparation of leaf protein concentrates is rather expensive. Field trials with a pronged cylinder which strips the leaves from the stems produced leaf yields of ž 80 % with a stem portion of £ 15 % (containing ž 26 % crude protein and £ 18 % crude fibre in the dry matter). Lucerne leaves can …
Persistence Of Contrasting Perennial Ryegrass- White Clover Mixtures At Two Defoliation Frequencies, A Elgersma, H Schlepers
Persistence Of Contrasting Perennial Ryegrass- White Clover Mixtures At Two Defoliation Frequencies, A Elgersma, H Schlepers
IGC Proceedings (1993-2023)
Mixtures of two cultivars of perennial ryegrass with contrasting growth habits and three white clover cultivars differing in leaf sizes were evaluated at two cutting frequencies to study white clover persistence. A trial was sown in 1991 on a clay soil. The plots received no nitrogen fertilizer. Throughout the years, mixtures with the large-leaved clover cv. Alice yielded significantly more herbage dry matter and had a higher clover content than mixtures with cvs. Gwenda and Retor. Companion grass cultivar did not consistently affect yield, nor botanical composition. Cutting at 2 t DM ha-1 resulted in slightly higher total annual yields …
Species Composition And Forage Quality Of Birdsfoot Trefoil (Lotus Corniculatus L.) - Grass Mixtures, L J. Greub, D J. Undersander
Species Composition And Forage Quality Of Birdsfoot Trefoil (Lotus Corniculatus L.) - Grass Mixtures, L J. Greub, D J. Undersander
IGC Proceedings (1993-2023)
This study compares yield, species composition, and forage quality of binary mixtures of two birdsfoot trefoil cultivars (‘Witt’ and ‘Dawn’) and six cool-season forage grasses. Stands were established by no-till seeding into glyphosate killed pasture sod in May and in August. Heavy autumn dandelion (Taraxacum officinale Weber) competition reduced trefoil survival in August seedings. The proportion of trefoil in the herbage varied widely but in spring-seeded seeding year stands it was always highest with Kentucky bluegrass (maximum of 740 g kg-1, first harvest, 1994) and usually lowest (107 g kg-1 or less) with perennial ryegrass, reed canarygrass, or orchardgrass. …
Winter-Hardiness And Pasture Productivity Of Some White Clover Cultivars In New York, H D. Karsten, G W. Fick
Winter-Hardiness And Pasture Productivity Of Some White Clover Cultivars In New York, H D. Karsten, G W. Fick
IGC Proceedings (1993-2023)
California Ladino (Ladino) the recommended white clover (Trifolium repens L.) cultivar, was compared to ‘Milkanova’, ‘Ranger’, and ‘Will’ from 1994 to 1996 on a dairy farm in New York. Each cultivar was represented by clones of 40 different mother plants in four blocks. Within each block for each cultivar, individuals from ten different mother plants were planted in seven 1m rows. To compare the cultivars, stolon density, growing point density, stolon starch and sugar concentrations, and plants/m were measured in autumn and spring. During the growing season rows were visually rated and aboveground biomass was sampled to estimate yield. Stolon …
Evaluation Of Grassland Advance Tall Fescue Under Grazing, R.J M. Hay, T B. Lyons, H S. Easton
Evaluation Of Grassland Advance Tall Fescue Under Grazing, R.J M. Hay, T B. Lyons, H S. Easton
IGC Proceedings (1993-2023)
Four cultivars of tall fescue (Festuca arundinacea Schreb.) were evaluated under sheep grazing at Palmerston North, New Zealand to assess the productivity and persistence of the newly released cultivar Grasslands Advance. Results from four years under grazing showed Grasslands Advance to be a considerable improvement over the older cultivar Grasslands Roa in both total sward yield and in dry matter contribution of tall fescue. It outperformed the other three cultivars in years 2 and 3 and was not significantly different to Grasslands Roa and AU Triumph in year 1 or AU Triumph in year 4. Seasonal production was excellent …
Evaluation Of Five Bahiagrass Cultivars In Southwest Florida, R M. Muchovej, J J. Mullahey
Evaluation Of Five Bahiagrass Cultivars In Southwest Florida, R M. Muchovej, J J. Mullahey
IGC Proceedings (1993-2023)
Bahiagrass, mostly of the cultivar Pensacola, is the predominant grass in Florida and occupies two million hectares of the five million currently under pastures in the state. Several other cultivars exist and are available to ranchers through seed producing companies. This study compares five cultivars of bahiagrass (T-9, Pensacola, Argentine, Paraguay, and T-7) with respect to dry matter yield, nitrogen content, and digestibility in Southwest Florida. Evaluations were made at intervals of approximately 35 days from late June to early December. Forage production was greatest for T-9; this variety produced 35% more forage than Pensacola. All varieties behaved similarly regarding …
Possibilities Of Renovation On Hungarian Grassland, L Szeman
Possibilities Of Renovation On Hungarian Grassland, L Szeman
IGC Proceedings (1993-2023)
The object of renovation was to increase the production of run-down permanent pastures by cultivation and by replanting good grasses. The experiment went on for four years on disked and ploughed areas, with pasture mix seed. Although fertilizer was not applied to the seedbed, 3 types of fertilizers were used every spring except on the control plots. The dry matter yield of the original pastoral flora decreased from 2.9 to 2.2 t/ha. On the fallow land it increased from 2 to 2.3 t/ha. When planted after disking, it increased from 2.1 to 6.1 t/ha and when planted after ploughing it …
Defoliation Frequency And Intensity Of Arrhenathherum Elatius, G H. D'Angelo, E B. Postulka, L Ferrari
Defoliation Frequency And Intensity Of Arrhenathherum Elatius, G H. D'Angelo, E B. Postulka, L Ferrari
IGC Proceedings (1993-2023)
This experiment was conducted with the aim of studying whether the frequency and intensity of defoliation of the temperate grass fromental (Arrhenatherum elatius (L.) Presl.) affected its total dry matter (DM)/ha yield as well as the seasonal distribution of forage. Plots were seeded in 1988 and data collected from 1989 to 1991. Two frequencies and two intensities of defoliation were combined in a two factor randomized complete block design with six replications. Treatment plots were cut each year from early autumn to late spring. ANVA, Tukey and Dunnett tests were applied to find out differences between treatments and between …
The Role Of Seeds Rate In Higher Persistence On Newly Established Meadows, P Golinski, S Kozlowski
The Role Of Seeds Rate In Higher Persistence On Newly Established Meadows, P Golinski, S Kozlowski
IGC Proceedings (1993-2023)
The paper presents results of a 7-year experiment concerning four mixtures applied for the renewal of meadows using the method of conventional tillage. The increase of the seed rate guarantees that the final composition of the obtained sward resembles the composition of species used in the sowing mixture and, what is equally important, this composition remains unchanged for a long period of utilization of meadows subjected to this method of renovation. Denser sowing restricts the appearance in the sward of species not used in the sowing mixture. Furthermore, it allows the development of a much more compact sward with a …
Extending Utilization Of Georgia 5 Tall Fescue In The Lower Southeastern United States, R D. Lee, R N. Gates, J H. Bouton
Extending Utilization Of Georgia 5 Tall Fescue In The Lower Southeastern United States, R D. Lee, R N. Gates, J H. Bouton
IGC Proceedings (1993-2023)
In the southeastern United States, warm season perennial grasses such as bermudagrass (Cynodon dactylon [L.]Pers.) and bahiagrass (Paspalum notatum Flugge) predominate permanent pastures. During dormancy, winter annuals are either over-seeded on permanent pastures or grown on prepared seedbeds for winter pasturing of animals. In addition, cattlemen feed hay cut from warm-season grass production. Cattleman and hay producers have lacked a dependable perennial cool season grass that could be utilized in addition to or in place of winter annuals or hay. High temperatures, pests, droughty conditions and competition from warm season species undermine the persistence of cool season grasses. …
Using Planned Volunteer Crabgrass (Digitaria Spp.) In Doublecropping With Cool Season Annual Forages, R L. Dalrymple
Using Planned Volunteer Crabgrass (Digitaria Spp.) In Doublecropping With Cool Season Annual Forages, R L. Dalrymple
IGC Proceedings (1993-2023)
Crabgrass (Digitaria ciliaris Retz., D. sanguinalis (L.) Scop. and other species) is used as a real and planned forage. The major known use is in Oklahoma and about 19 other Southeast United States as a doublecropping or multicropping forage production approach whereby, crabgrass is the summer season forage and cool season annual grasses, with or without cool season legumes, are used as the winter season forage. High quality forage is thus produced up to over nine months of a year. Cereal rye (Secale cereale L.) and crabgrass doublecropping has produced up to over 10,000 pounds of grass per acre. Both …
Bermudagrass Pastures Under Long-Term Stocking Rates And Fertility Regimes, F M. Rouquette Jr, G R. Smith, V A. Haby
Bermudagrass Pastures Under Long-Term Stocking Rates And Fertility Regimes, F M. Rouquette Jr, G R. Smith, V A. Haby
IGC Proceedings (1993-2023)
After 16 years of grazing ‘Coastal’ and common bermudagrass [Cynodon dactylon (L.) Pers.] pastures each at 3 levels of forage mass, N vs non-N fertilizer was superimposed to assess stand maintenance of bermudagrass and cow-calf performance. After 7 additional years of fertility treatments, N plus overseeded ryegrass (Lolium multiflorum Lam.) provided for 202 days grazing; whereas, K plus overseeded clovers (Trifolium incarnatum L.) and (T. vesiculosum Savi.) provided adequate forage for 179 days grazing. Coastal supported higher stocking rates (2.3 to 7.9 680-kg animal units(AU)/ha) than common bermudagrass (2.0 to 5.3 AU/ha). Suckling calf daily gains …
The Effect Of Ladino Clover Mixture With Some Grasses On Dm Yield, Botanical Compsosition And Season Nitrogen Activity, H W. Lee, C H. Kim
The Effect Of Ladino Clover Mixture With Some Grasses On Dm Yield, Botanical Compsosition And Season Nitrogen Activity, H W. Lee, C H. Kim
IGC Proceedings (1993-2023)
The effect of ladino clover mixture with some grasses on DM production, botanical composition and seasonal nitrogen fixation activity was examined under field conditions in two consecutive years. Treatment consisted of a clover mixture with four grasses and a reference crop which was grass grown alone. DM production of second year Perennial ryegrass, Tall fescue plus clover mixture was greater than plot growing grasses but almost the same as Timothy and Orchardgrass both with and without clover. Yield in the third year was higher than that of the clover mixture treatment. Ladino clover content was increased from 26% in 1992 …
Effects Of Defoliation Frequency On The Persistency Of Oversown Temperate Legumes Into A Natural Pasture, J C. Millot, R A. Zanoniani, S Saldanha
Effects Of Defoliation Frequency On The Persistency Of Oversown Temperate Legumes Into A Natural Pasture, J C. Millot, R A. Zanoniani, S Saldanha
IGC Proceedings (1993-2023)
The objective of this study was to study the establishment dynamics and persistence of a legume mixture oversown into natural grasslands under five different grazing management systems. Topographic position had the most significant effect on establishment and persistence. The lowlands were the best sites for legume establishment and persistence. Two years of previous management changed the ground cover components affecting the germination pattern of introduced seeds. The more frequent grazing treatments increased the total number of established legumes and their persistence throughout five years of grazing in the lowlands. Legume persistence on the slopes was generally shorter and was optimized …
Effect Of The Cutting Frequency On Yield, Crude Protein And Mineral Contents Of A Panicum Maximum/Centrosema Macrocarpum Mixture, J Faria-Marmol, D E. Morillo, R Gonzalez, Z Chirinos
Effect Of The Cutting Frequency On Yield, Crude Protein And Mineral Contents Of A Panicum Maximum/Centrosema Macrocarpum Mixture, J Faria-Marmol, D E. Morillo, R Gonzalez, Z Chirinos
IGC Proceedings (1993-2023)
Dry matter (DM) yield, crude protein (CP) and mineral composition of Panicum maximum-Centrosema macrocarpum association as affected by three cutting frequencies (28, 42 and 56 days) were compared in a tropical dry forest of Venezuela. No differences (P<0.05) among defoliation frequencies for any of the variables were detected. All mineral concentrations evaluated in Guineagrass (P. maximum) were considered adequate for grazing ruminants. In C. macrocarpum only P (0.24%) and N (0.08%) were close to critical level for deficiencies in ruminants. P. maximum-Centrosema macrocarpum mixture offered adequate levels for grazing ruminants for all nutrients evaluated.
Effects Of Three Cutting Frequencies On Yield, Crude Protein And Mineral Contents Of Centrosema Macrocarpum, J Faria-Marmol, D E. Morillo, R Gonzalez, Z Chirinos
Effects Of Three Cutting Frequencies On Yield, Crude Protein And Mineral Contents Of Centrosema Macrocarpum, J Faria-Marmol, D E. Morillo, R Gonzalez, Z Chirinos
IGC Proceedings (1993-2023)
Dry matter (DM) yield, crude protein (CP) and mineral composition of Centrosema macrocarpum as affected by three cutting frequencies (28, 42 and 56 days) were compared in a tropical dry forest of Venezuela. DM yield and plant height were increased (P<0.05) by increasing the cutting intervals, whereas CP, ash and most minerals were not affected (P<0.05). Only P concentration declined (P<0.05) with increasing plant maturity. The lowest P concentration (0.18%) resulted from the longest cutting interval. Average CP concentration and mineral contents of C. macrocarpum were adequate with grazing ruminant requirements with exception of P (0.21%) and Na (0.073%).