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Articles 91 - 120 of 388
Full-Text Articles in Plant Pathology
High Moisture Corn Supplementation Of Different Dry Matter Content To Cows Grazing Temperate Pasture, D H. Rearte, H Alvarez, F Santini
High Moisture Corn Supplementation Of Different Dry Matter Content To Cows Grazing Temperate Pasture, D H. Rearte, H Alvarez, F Santini
IGC Proceedings (1977-2023)
The objective of this study was to evaluate grazing dairy cows performance supplemented with high moisture corn of different dry matter content. Cows grazed fresh forage oat day and night and received 5 kg DM high moisture corn daily. Treatments 1 and 2 were high moisture corn of 30% and 18% moisture content respectively. Twenty Holstein cows were used for milk production and composition studies and six rumen fistulated cows were used for rumen digestion studies. Milk production and composition and body weight gain were not affected by the dry matter content of the supplemented high moisture corn. Related to …
Sheep Production On An Annual And Perennial Pasture In Southwest Australia, P Sanford, J Gladman, L Cransberg
Sheep Production On An Annual And Perennial Pasture In Southwest Australia, P Sanford, J Gladman, L Cransberg
IGC Proceedings (1977-2023)
Sheep production on an annual and perennial pasture stocked at 11.5 dse/ha, was compared in a mediterranen environment at Manypeaks in Western Australia. The annual sward comprised of 48% subterranean clover (Trifolium subterraneum L.), 20 % annual grasses (Lolium rigidum Gaudin, Hordeum leporinum Link, Vulpia bromoides (L.) S.F. Gray) and 32% capeweed (Arctotheca calendula L.). The perennial sward was 19% kikuyu (Pennisetum clandestinum), 36% subterranean clover, 43% annual grasses (Lolium rigidum Gaudin, Hordeum leporinum Link, Vulpia bromoides (L.) S.F. Gray) and only 2% capeweed which was displaced by kikuyu. Both pasture types had similar growth …
Production Response To Feed Supplementation Of Dairy Cows In A Seasonal Calving And Grazing System, T R. Dhiman, W R. Kanneganti, R P. Walgenbach, L J. Massingill, M C. Miltbank, M P. Russelle, L D. Satter
Production Response To Feed Supplementation Of Dairy Cows In A Seasonal Calving And Grazing System, T R. Dhiman, W R. Kanneganti, R P. Walgenbach, L J. Massingill, M C. Miltbank, M P. Russelle, L D. Satter
IGC Proceedings (1977-2023)
A study was conducted over a period of two years to determine the impact of supplemental feed on milk yield and reproductive performance of dairy cows in a spring calving and grazing system. Three groups of Holstein cows consumed either all pasture (P), 2/3 (2/3P), or 1/3 (1/3P) of their feed dry matter from a temperate pasture of mixed grasses and white clover (Trifolium repens L.). The balance of feed for the 2/3P and 1/3P groups was supplied by a supplement containing grain and some forage. Cows calved between March and June. During the grazing season cows consumed 0, 5.8 …
Forage Productivity And Animal Performance On Different Grass/Legume Pastures For Grazing Management, Sung Seo, Joung Kyong Lee, Dong Eun Shin
Forage Productivity And Animal Performance On Different Grass/Legume Pastures For Grazing Management, Sung Seo, Joung Kyong Lee, Dong Eun Shin
IGC Proceedings (1977-2023)
A grazing trial was carried out to determine the effects of different grass/legume pastures on forage productivity, nutritive value, and animal performance. The pasture mixtures were mainly orchardgrass (OG)+ladino clover(T1), mainly OG+alfalfa(T2), mainly perennial ryegrass+alfalfa(T3), and grasses alone (mainly OG, T4). The pastures were rotationally grazed 7 times with growing heifers in 1991 and 1992. The proportion rate of ladino clover in T1 mixtures rapidly increased from 21% up 54 to 68% during the grazing season. However, the rate of alfalfa in T2 and T3 ranged between 12% and 23%. The annual dry matter yield ranged from 9.19 in T4 …
Beef Production From Grazed Grass And Grass/Clover Swards, Edward G. O'Riordan
Beef Production From Grazed Grass And Grass/Clover Swards, Edward G. O'Riordan
IGC Proceedings (1977-2023)
grazed grass (fertiliser nitrogen treated) and grass/clover swards, during two grazing seasons which extended from early-April until mid-November. Both permanent (Treatments A, B and C) and reseeded (Treatment D, E and F) swards were respectively stocked with 3000, 2500 and 2000 kg liveweight/ha in Spring using fifteen steers/treatment (liveweight = 570kg/head). There were small and generally non-significant treatment effects on final liveweight in both years, but heavier carcasses were observed on the reseeded swards (P<0.05). Clover based swards (Treatments B, C and E, F) produced heavier carcasses (P<0.05) than the nitrogen fertilised grass swards (Treatments A and D). Pasture production ranged from 7540 to 10,469 and from 6360 to 11,606 kg DM/ha in year 1 and 2 respectively, with highest yields being observed on the nitrogen fertilised treatment and on the reseeded swards.
Extensive Management Of Grasslands In Central France: Effects On Animal Performances And Economical Efficiency, J M. Chabosseau
Extensive Management Of Grasslands In Central France: Effects On Animal Performances And Economical Efficiency, J M. Chabosseau
IGC Proceedings (1977-2023)
The farming context for livestock production has changed in Central France for the last 15 years. There has been a release of land and a change in financial support that favoured extensive systems. The management and economical results of two experimental sheep farmlets are compared; the extensified has an area 45% larger than the control but the number of ewes are the same. The optimization of managements in both units leads to practices rather different for fertilising, fodder making and grazing. The effects are the achieving of similar animal performances and the reduction of expenditure on grasslands (-30% per ewe) …
Grazing Affects Pest And Beneficial Invertebrates In Australian Pastures, P J. Michael, M Grimm, M Hyder, P T. Doyle
Grazing Affects Pest And Beneficial Invertebrates In Australian Pastures, P J. Michael, M Grimm, M Hyder, P T. Doyle
IGC Proceedings (1977-2023)
Grazing annual subterranean pastures in Western Australia to targeted levels of pasture mass, instead of at a set stocking rate, affected numbers of invertebrates at the commencement of the following season. Treatments were controlled grazing to 1.4 t ha-1 or 2.8 t ha -1 dry weight of green pasture and set stocking at the average for the district. Grazing reduced numbers of redlegged earth mite, Halotydeus destructor, but increased numbers of lucerne flea, Sminthurus viridis. The most likely reason for the reverse effect on lucerne flea was the presence of an effective predator, the pasture snout mite, Bdellodes lapidaria …
Effect Of Grazing Pressure And Supplemental Level On Weight Gain In Dairy Heifers, J M. Mieres, Y M. Acosta
Effect Of Grazing Pressure And Supplemental Level On Weight Gain In Dairy Heifers, J M. Mieres, Y M. Acosta
IGC Proceedings (1977-2023)
An experiment designed to assess the effect of two grazing pressures (GP, expressed as kg MS/100 kg LW) and four levels of supplement (0, 0.25, 0.50 and 0.75 expressed as kg/100 kg LW) fed to yearling heifers (212 kg) on live weight gain, was carried out at the Dairy Unit of INIA La Estanzuela (Uruguay). The experiment consisted of 8 treatments. Forty animals were used in the experiment, 5 per treatment, each animal being a replication of the treatment. The animals were blocked by weight in 5 blocks of 8 animals each, and then randomly assigned to the different treatments. …
Grazing Systems Research In The Falkland Islands, J A. Kerr
Grazing Systems Research In The Falkland Islands, J A. Kerr
IGC Proceedings (1977-2023)
Conceptual models of both the metabolisable energy (ME) balance of sheep in relation to the environment and the effects heavy grazing on vegetation and soils will form the basis for the development of a sustainable grazing system for wool production in the Falkland Islands. Research which integrates plant community ecology, agricultural meteorology, sheep energetics, grazing systems and socio-economics is described.
Zea Mays Grazing In Cattle Production Systems, V Mundy, B E. Anderson, T L. Gompert, T L. Mader, C A. Shapiro
Zea Mays Grazing In Cattle Production Systems, V Mundy, B E. Anderson, T L. Gompert, T L. Mader, C A. Shapiro
IGC Proceedings (1977-2023)
Nebraska producers have used silage maize (Zea mays L.) hybrids as a grazed forage in dairy and beef production systems. In an onfarm case study, farmers and researchers collaborated to gather information on production practices, grazing management, and plant characteristics of grazing maize within three forage-based dairy and beef systems. Production practices were generally similar to conventional grain corn production, except that in one system maize was seeded directly into a suppressed grass sod. Milk production from grazing maize was 23 kg/day/animal, compared to 24 kg/day/ animal before using maize and 22 kg/day/animal after using maize. Average gain of …
Socio-Economic And Climate Change In Mongolia - Effects On Grassland Ecosystems, C Opp
Socio-Economic And Climate Change In Mongolia - Effects On Grassland Ecosystems, C Opp
IGC Proceedings (1977-2023)
In Mongolia, in combination with strong changes of the whole society during the past 76 years, from the feudal system to socialism and from the socialist system of planned development to the market economy, there are a lot of changes in the use of natural resources all over the country. In consequence of this a lot of effects on grassland ecosystems, caused by socio-economic and climate driving factors, were observed and studied in different scales: zonal, regional, local.
Forage Production And Performance Of Beef Yearlings Grazing Diploid And Tetraploid Crested Wheatgrass, J D. Bruynooghe, R.D H. Cohen, N W. Holt, P G. Jefferson
Forage Production And Performance Of Beef Yearlings Grazing Diploid And Tetraploid Crested Wheatgrass, J D. Bruynooghe, R.D H. Cohen, N W. Holt, P G. Jefferson
IGC Proceedings (1977-2023)
A series of experiments were conducted during 1994 and 1995 at Swift Current, Saskatchewan, Canada to evaluate forage production and animal performance on tetraploid Kirk (Agropyron cristatum (L.) Gaertn.) and diploid Fairway (Agropyron cristatum (L.) Gaertn.) crested wheatgrass pastures under grazing conditions imposed by beef (Bos taurus) yearling steers at four stock density levels (3, 4, 6 and 8 steers ha-1). Total ungrazed forage production for Kirk was greater (<0.05) than Fairway (6302 kg ha-1 vs. 5235 kg ha-1) in 1994 but less (P<0.05) than Fairway in 1995 (3709 kg ha-1 vs. 4633 kg ha-1). Animal performance (average daily gain, animal grazing days and total animal production) did not differ (P>0.05) for steers grazing either Kirk or Fairway pastures. Plant vigour and available energy reserves following one season of grazing were evaluated through etiolated growth with …
Vertical Distribution In Grass Swards: Interactions Between Dry Matter And Nutritional Quality, D R. Buckmaster, R H. Mohtar, S L. Fales
Vertical Distribution In Grass Swards: Interactions Between Dry Matter And Nutritional Quality, D R. Buckmaster, R H. Mohtar, S L. Fales
IGC Proceedings (1977-2023)
A field experiment was conducted to study the distribution of mass and quality over plant height throughout the growing season in a pure stand of orchardgrass (Dactylis glomerata L.). When plant density (expressed as kg DM/ha per cm height) is plotted against a height of strata, all treatments show a similar linear shape distribution. ADF and NDF concentrations declined with sward height. Fall treatments had lower ADF and NDF concentrations than summer treatments. Conversely, CP concentrations showed an increase with plant height. Fall treatments showed higher CP than spring and summer treatments. Defoliation management did not affect orchardgrass quality. …
Application Of The Phygrow Forage Production- Runoff Model For Regional Stocking Analysis, J W. Stuth, J R. Conner, W T. Hamilton, D M. Schmitt
Application Of The Phygrow Forage Production- Runoff Model For Regional Stocking Analysis, J W. Stuth, J R. Conner, W T. Hamilton, D M. Schmitt
IGC Proceedings (1977-2023)
A hydrologic-based forage production model, PHYGROW, was used to simulate forage production and carrying capacity of a subtropical shrubland complex of over 34 species grazed by various ratios of cattle and goats with a population of indigenous white-tailed deer over a 20-yr simulated weather profile. The diet selection algorithm allowed the three animal populations to selectively graze preferred foods based on preferences of plant species, plant parts, and live:dead status by phenological stage. A level of maximum utilization of key species was specified. An incremental analysis of cattle:goat demand ratio was analyzed to determine how different combinations of livestock were …
Using Nested Paddocks To Study Multiple-Paddock Grazing Systems, B E. Anderson, W W. Stroup, W H. Schacht
Using Nested Paddocks To Study Multiple-Paddock Grazing Systems, B E. Anderson, W W. Stroup, W H. Schacht
IGC Proceedings (1977-2023)
There is insufficient information to guide development of multiple paddock grazing systems. Measuring vegetation responses to grazing period/recovery period intervals is prohibitively expensive when using most grazing research designs. Nested paddock designs reduce land area, number of herds, and number of paddocks needed for comparisons. Nested paddocks permit comparisons of animal performance among whole pasture treatments but comparisons are limited for animal performance differences among grazing/recovery period lengths. Nonetheless, nested paddock designs efficiently document vegetation responses to grazing intervals, which may permit predictions of animal performance.
Relationship Between Broadleaf Dock (Rumex Obtusifolius L.) And Seasonal Yield Of Orchardgrass Grazed Pasture, Y Iijima, Y Kurokawa, T Monya, Y Suzuki
Relationship Between Broadleaf Dock (Rumex Obtusifolius L.) And Seasonal Yield Of Orchardgrass Grazed Pasture, Y Iijima, Y Kurokawa, T Monya, Y Suzuki
IGC Proceedings (1977-2023)
In order to grasp the ecology of R. obtusifolius and the effects of it on seasonal yield of grass in grazing pasture, we investigated seasonal sward characteristics and dry matter yield in grazing pasture. Dry matter yield and coverage of R. obtusifolius predominated those of grass after mid-June and mid-August, respectively. Throughout the year the coverage of R. obtusifolius negatively correlated to the grass yield. After August, the grass yield was negatively related to the yield and the population density of R. obtusifolius. From the facts described above, R. obtusifolius seems to reduce grass yield throughout the year, especially …
Validation Of Arachis Pintoi As A Forage Legume In Commercial Dual Purpose Cattle Farms In Forest Margins Of Colombia, C E. Lascano, G A. Ruiz, J Valasquez, J Rozo
Validation Of Arachis Pintoi As A Forage Legume In Commercial Dual Purpose Cattle Farms In Forest Margins Of Colombia, C E. Lascano, G A. Ruiz, J Valasquez, J Rozo
IGC Proceedings (1977-2023)
An on-farm pilot project was initiated in the Andean piedmont of the Amazon basin in Caquetá, Colombia to determine the contribution of the forage peanut Arachis pintoi (CIAT 17434) introduced in degraded pastures to animal production and soil improvement. Early results show that milk production in dual purpose cattle farms can be increased by 20% with A. pintoi-based pastures. However, to enhance adoption of the legume by farmers there is a need to make adjustments on pasture management and assure supply of high quality seed in the region.
Agri-21: Sustainable Farming Demonstration, M Rasnake, W R. Burris, G D. Lacefield
Agri-21: Sustainable Farming Demonstration, M Rasnake, W R. Burris, G D. Lacefield
IGC Proceedings (1977-2023)
On-farm demonstrations were established in 1993 to demonstrate the technology required to conduct a profitable and sustainable farming operation into the 21st Century. These were part of a cooperative program between the Tennessee Valley Authority (TVA) and Land Grant Universities in the seven states of the TVA region. Four demonstrations were established in Kentucky. A beef farm in west Kentucky will be used to illustrate the project. This farm improved crop and livestock management, record keeping and environmental stewardship. Their goal is to increase farm profitability while improving the soil and water resources.
Roles Of Clovers In Southeast U.S.A Pastures, G D. Lacefield, D M. Ball, J C. Henning, M Rasnake
Roles Of Clovers In Southeast U.S.A Pastures, G D. Lacefield, D M. Ball, J C. Henning, M Rasnake
IGC Proceedings (1977-2023)
Grasses dominate pastures in the Southeast U.S.A.; research and farmer experience have shown that the addition of legumes to grass dominant pastures can improve environmental, agronomic and animal parameters. Legumes grown in mixtures with grasses can increase yield, improve forage quality and animal performance, convert atmospheric nitrogen into a form useable by plants, extend the grazing season, and offset certain animal disorders. As livestock producers continue to strive for more sustainable feed production and utilization programs with greater emphasis on grazing, legumes will play an even greater role in Southeast U.S.A. agriculture.
The Role Of Tagasaste (Chamaecytisus Proliferus) In Farming Systems Of Southern Australia, E C. Lefroy, A K. Abadi Ghadim, N J. Edwards, M A. Ewing
The Role Of Tagasaste (Chamaecytisus Proliferus) In Farming Systems Of Southern Australia, E C. Lefroy, A K. Abadi Ghadim, N J. Edwards, M A. Ewing
IGC Proceedings (1977-2023)
Farm scale economic analysis of a recently developed alley cropping system based on the fodder shrub tagasaste (Chamaecytisus proliferus) was carried out using the optimising model MIDAS. The model was used to assess the potential application of this new farming system to infertile sandplain soils in southern Australia by comparing the profitability of improved serradella based annual pasture (Ornithopus compressus and O. sativa), tagasaste in plantations and tagasaste alley cropping. The third option was the most profitable, increasing sheep carrying capacity by 76% and resulting in 45% of the model farm being planted to tagasaste alley …
Short-Term Effects Of Grazing And Rest Treatments On The Seed Banks Of Two Contrasting Sites In The Semiarid Pampas, Argentina, M O. Aguilera, M M. Marchi, O Terenti
Short-Term Effects Of Grazing And Rest Treatments On The Seed Banks Of Two Contrasting Sites In The Semiarid Pampas, Argentina, M O. Aguilera, M M. Marchi, O Terenti
IGC Proceedings (1977-2023)
The germinable seed bank was characterized in relation to season, grazing, and site type at southcentral San Luis, Argentina. Vegetation is typical of the semiarid western extreme of the Pampas grasslands. Our objective was to evaluate the effect of grazing and rest during the growing season on seed banks for two contrasting sites. Seed banks were sampled twice, in spring and fall. In each date, soil cores were obtained in sanddune and flat sites, for pastures grazed or that remained ungrazed during the growing season. Soil was spread in trays under suitable conditions for germination. Evaluations were done on total …
Native Grasses In The Pilbara Region, Australia; Resource Acquisition, Allocation And Growth, L J. Ingram, L T. Bennett, M A. Adams
Native Grasses In The Pilbara Region, Australia; Resource Acquisition, Allocation And Growth, L J. Ingram, L T. Bennett, M A. Adams
IGC Proceedings (1977-2023)
Biomass production and nitrogen content of the native perennial grasses, Barley Mitchell grass (Astrebla pectinata ) and Kangaroo grass (Themeda triandra), were studied over the 1996 growing season. After 160 mm of rain, the biomass of T. triandra increased from 2 to 4 t/ha, while A. pectinata increased from 1.1 to 1.5 t/ha. N in aboveground biomass of T. triandra increased from 14.5 to 17 kg/ha and of A. pectinata from 8.5 to 10 kg/ha. A. pectinata leaves senesced quickly increasing the total amount of N in dead leaves. T. triandra senesced more slowly but dead leaves …
Leucaena Leucocephala As A Supplement For Goats On Tropical Pastures, T Clavero, R Razz
Leucaena Leucocephala As A Supplement For Goats On Tropical Pastures, T Clavero, R Razz
IGC Proceedings (1977-2023)
A field experiment was conducted in the dryland farming area of Northwest Venezuela in order to evaluate three diets in grazing goats (pasture only; grazing pasture + 0.3 kg of commercial concentrate/ animal/d; grazing pasture + restricted grazing for 2 hours daily in Leucaena leucocephala) on milk production (mp) and milk composition (fat -f- and mineral concentration -mc-). The experiment was laid out as randomized block design. The data showed significant difference (P<0.05) between treatments. Milk production increased in 50 and 70% when goats had access to commercial concentrate or Leucaena graizing as well as grass pasture compared with the control treatment. Milk production in goats with access to Leucaena was insignificantly different than goats on concentrate. Treatments did not affect milk composition. The results suggest that Leucaena leucocephala can supply an adequate amount of nutrient with similar value to commercial concentrate for milk production in grazing goats.
Monitoring The Stabilization Of Semi-Arid Grassland In The Bridge Creek Watershed Of Central Oregon, R Demmer, L Andrews, B Keller
Monitoring The Stabilization Of Semi-Arid Grassland In The Bridge Creek Watershed Of Central Oregon, R Demmer, L Andrews, B Keller
IGC Proceedings (1977-2023)
Using land exchanges the Bureau of Land Management (BLM) in central Oregon consolidated its land base in the Bridge Creek Watershed between 1987 and 1992 to obtain a 64,500 acre land block. The uplands had been grazed and the valley bottoms farmed since the middle 1800s. Due to improper grazing, primitive irrigation, fire suppression and juniper invasion, the native vegetation was sparse. Weeds were ubiquitous, and soils were eroded. The results of actions taken after baseline inventories of riparian and range communities were monitored. This feedback prompted further actions. Monitoring confirms that increasing native vegetation and decreasing erosion is stabilizing …
Dryland Grazing Evaluation Of Grasslands Gala Grazing Brome, B L. Sutherland
Dryland Grazing Evaluation Of Grasslands Gala Grazing Brome, B L. Sutherland
IGC Proceedings (1977-2023)
Grasslands Gala grazing brome (Bromus stamineus), was evaluated for seasonal production and persistence under dryland conditions. Gala was compared with cultivars from three different Bromus species and a high endophyte ryegrass, under three sheep grazing managements which varied in duration and intensity. Seasonal herbage yields indicated that Gala persisted under all managements, but was more productive under short and medium rotation grazing than long rotation lax grazing. Results of this five year evaluation indicate that Gala compares favourably with existing cultivars, with its broad range of tolerances making it a desirable option as a perennial in temperate dryland pastoral …
Productivity Of Grasses In A Pasture In The Cerrado Area Of The "Triangulo Mineiro", I F. Andrade, M A. Oliveira
Productivity Of Grasses In A Pasture In The Cerrado Area Of The "Triangulo Mineiro", I F. Andrade, M A. Oliveira
IGC Proceedings (1977-2023)
A grazing trial using guinea and coloniao (Panicum maximum), setaria (Setaria sphacelata), andropogon (Andropogon gayanus), and signalgrass (Brachiaria decumbens) was conducted during three grazing cycles: 1st cycle - Apr. 5, 1984 to Jul. 23, 1984; 2nd - Dec. 4, 1984 to Oct. 30, 1985 and 3rd - Jan. 16, 1986 to Jan. 15, 1987. It was also used with four stocking rates- T1= 0.8, T2= 1.0, T3= 1.2, and T4= 1.4 animal units/ha (AU/ha). In the 2nd period signalgrass was discarded because of poor condition of the pastures, and in the last grazing cycle …
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 (1977-2023)
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 (1977-2023)
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 …
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 (1977-2023)
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 …
Effects Of Grazing Damage On White Clover Stolon Morphology, J R. Caradus, D F. Chapman
Effects Of Grazing Damage On White Clover Stolon Morphology, J R. Caradus, D F. Chapman
IGC Proceedings (1977-2023)
In two trials the effect of white clover stolon growing point removal due to grazing damage by sheep on stolon growth and morphology was investigated. Damage to the main stolon growing point did not affect stolon branch appearance rate, so that with a reduced node appearance rate on main stolons there was an increased proportion of nodes branching on damaged stolons. Compensatory growth by branch stolons after main stolon growing point removal occurred when measured as stolon elongation rate.