Dryland Grazing Evaluation Of Grasslands Gala Grazing Brome,
2024
Lincoln University
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 …
Influence Of Fall Cutting Management And N Fertilization On Winter Survival Of Lolium Perenne L.,
2024
Agriculture and Agri-Food Canada
Influence Of Fall Cutting Management And N Fertilization On Winter Survival Of Lolium Perenne L., P Nadeau, Y Castongauy, R Michaud, J Surprenant
IGC Proceedings (1977-2023)
Two perennial ryegrass cultivars known to differ in winter hardiness were subjected to six fall managements comprising two N rates and three fall cutting treatments. Water-soluble carbohydrate changes, winter survival and freezing tolerance were measured as well as subsequent spring production. Fall cutting treatments had strong effects on winter survival as cuts taken late in the fall reduced survival to a greater extent than earlier cuts. Nitrogen fertilization had no preponderant effect on the acquisition of cold tolerance at least under the N levels applied in this study, but was related to more vigorous spring growth. The superior winter survival …
Lamb Performance On Russian Wildrye And Russian Wildrye-Legume Mixtures,
2024
Department of Plant, Soil and Insect Sciences, Larami, Wyoming
Lamb Performance On Russian Wildrye And Russian Wildrye-Legume Mixtures, David W. Koch, Limei Yun
IGC Proceedings (1977-2023)
Alfalfa, sainfoin and cicer milkvetch provided relatively little increase in forage production, however, they improved forage palatability and quality, increasing total forage consumption. Over years 3 through 5 of the stand, lamb production per hectare was more than doubled with alfalfa and sainfoin, compared with Russian wildrye (RWR) alone. Cicer milkvetch was relatively slow to establish and did not contribute significantly to mixture quality until Year 5. Alfalfa was more competitive to RWR than sainfoin.
Effect Of Frequency And Intensity Of Defoliation On Oat- Vetch Mixture,
2024
Universidad Nacional del Centro de la Provincia de Buenos Aires
Effect Of Frequency And Intensity Of Defoliation On Oat- Vetch Mixture, M J. Arzadun, M H. Vallejos, M M. Piersanti
IGC Proceedings (1977-2023)
An experiment was conducted to evaluate the effect of different cutting regimes on productivity and complementarity between oat and vetch in a mixture. The treatments were allocated in a factorial design on a split-split-plot disposition: they were 3 cutting frequencies (each 35, 70 and 105 days), 3 cutting heights (2, 8 and 14 cm above ground) and 3 crops (oat, vetch and the 1:1 mixture). Forage production (dry matter per hectare) and complementarity between species Relative Yield Total (RYT) were evaluated. The highest forage production (p- 0.05) was obtained with a cutting height of 2 cm and a frequency of …
Grazing Sheep On Revegetated Saline Pastures: Effects Of Season And Grazing On Morphology And Nutritive Value Of Saltbush,
2024
Pakistan Agricultural Research Council
Grazing Sheep On Revegetated Saline Pastures: Effects Of Season And Grazing On Morphology And Nutritive Value Of Saltbush, Atiq Ur Rehman, J B. Mackintosh, B E. Warren, D R. Lindsay
IGC Proceedings (1977-2023)
This experiment was designed to determine the thickness of saltbush (Atriplex amnicola) stem grazed by sheep, grazing pressure on saltbush in the presence of understorey and the effect of season on the nutritive value of saltbush. Four 0.9 ha plots of Atriplex amnicola were grazed by a group of 10 Merino wethers each. The results indicated that the maximum diameter of stem selected by sheep under extreme conditions was only 1.5 mm. The number of stems chewed per 0.1m2 quadrat were 0.8, 9.6, 20.1 and 18.0 (P<0.05) after 2, 4, 6 and 8 wk. From January to June the nitrogen content (14 to 30 gkg-1) and DMD (0.65 to 0.72) of saltbush leaves remained high. These results suggest that in the presence of understorey the grazing pressure on saltbush was least and increases when the feed from understorey was exhausted. The nutritional value of saltbush did not deteriorate severely during the summer and autumn period.
Productivity Of Grasses In A Pasture In The Cerrado Area Of The "Triangulo Mineiro",
2024
EPAMIG
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 …
Establishment Vigor Of Endophyte Free And Endophyte Infected Tall Fescue Cultivars In Southern Ohio,
2024
OSU Extension
Establishment Vigor Of Endophyte Free And Endophyte Infected Tall Fescue Cultivars In Southern Ohio, C D. Penrose, H M. Bartholomew, R M. Sulc, E M. Volborn
IGC Proceedings (1977-2023)
Eleven cultivars of tall fescue (Festuca arundinacea, Schreb.) and two cultivars of orchardgrass (Dactylis glomerata L.) are part of a study to evaluate yield, establishment vigor, persistence and palatability under autumn stockpiling conditions. Included in the study are two endophyte infected-cultivars of tall fescue to compare interactions with endophyte free and infected cultivars. The results demonstrate that the newer endophyte-free and low-endophyte tall fescue cultivars evaluated are similar to other orchardgrass and endophyte-infected tall fescue cultivars in establishment vigor and early growth the year following establishment.
Effect Of Irrigation And Nitrogen Fertilization On Ryegrass And Ryegrass/ White Clover Swards,
2024
INTA
Effect Of Irrigation And Nitrogen Fertilization On Ryegrass And Ryegrass/ White Clover Swards, C J. Escuder, C A. Cangiano
IGC Proceedings (1977-2023)
An experiment to determine nitrogen and water effect on dry matter yield of perennial ryegrass (Lolium perenne L) in mixtures with white clover (Trifolium repens L) and pure ryegrass pastures was carried out during two years at Balcarce, the Buenos Aires province, Argentina. Two levels of irrigation, natural rainfall and 20 mm irrigation when needed, and four levels of nitrogen fertilization 0; 150; 300; and 450 kg N.ha-1.yr were applied. During the first year it was necessary to apply 250 mm of supplementary water to the irrigated plots, while 530 mm were needed the second year. Nitrogen responses …
Forage And Protein Production Per Hectare Using Different Species For Interseeding,
2024
INTA
Forage And Protein Production Per Hectare Using Different Species For Interseeding, J A. Josifovich, J O. Scheneiter
IGC Proceedings (1977-2023)
The objective was to test the efficiency of different species for interseeding in relation to forage and crude protein production. Avalability of forage and crude protein were evaluated every spring, after 60 days rest. The design was a split-split plot: in an Argiudol soil legumes were the whole plot, grasses subplot and fertilizer subsubplot. Dry matter accumulation did not show any difference in relation to treatments in three of four springs. Crude protein showed differences in three of four springs, being interseeding better than control. Interseeding of old pastures resulted in a good practice to keep the balance legume-grass, as …
Pasture Life Lengthening And Beef Production Increase Through Interseeding,
2024
INTA
Pasture Life Lengthening And Beef Production Increase Through Interseeding, J A. Josifovich, J O. Scheneiter
IGC Proceedings (1977-2023)
The objective of the trial was to evaluate the influence of pasture interseeding with grasses and legumes on the forage production and liveweight gains by steers. Four year pastures were interseeded with alfalfa (Medicago sativa L.), brome (Bromus unioloides HBK.), red clover (Trifolium pratense L.) and orchardgrass (Dactylis glomerata L.). There were two treatments with two replications: interseeding and control, grazed by steers. For four periods forage availability did not show differences. Legume percentage was higher in interseeding. The animal daily gains were higher in the interseeded treatment in the first two periods, but decreased with …
Legume-Legume Complementary For Sustainable Pasture Development In The Tropics,
2024
ILRI
Legume-Legume Complementary For Sustainable Pasture Development In The Tropics, M Peters, S A. Tarawali, R Schultze-Kraft, A Musa
IGC Proceedings (1977-2023)
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,
2024
Universidad Autonoma de Chapingo
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,
2024
Universidad Autonoma de Chapingo
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 …
Effects Of Planting Dates On Field Emergence And Forage Yield Of Sudangrass And Sorghum,
2024
Taiwan Livestock Research Institute
Effects Of Planting Dates On Field Emergence And Forage Yield Of Sudangrass And Sorghum, Fu-Hsing Hsu, Kong-Yuan Hong
IGC Proceedings (1977-2023)
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,
2024
USDA, NRCS
The Induction Of Dormancy In Grass Seed By Paclobutrazol: A Method To Improve Fall Seedings, P R. Salon, A A. Khan
IGC Proceedings (1977-2023)
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,
2024
Indian Grassland and Fodder Research Institute
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 (1977-2023)
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,
2024
NSW Agriculture
Grazing Strategies To Increase Persistence Of Phalaris Aquatica L. In Summer Rainfall Areas Of Temperate Australia, G M. Lodge
IGC Proceedings (1977-2023)
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,
2024
Massey University
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 (1977-2023)
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,
2024
University of Pretoria
The Potential Of Winter Rye Cultivars In The Gauteng Province Of South Africa, C C. Botha, N.F. G. Rethman
IGC Proceedings (1977-2023)
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,
2024
NSW Agriculture
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 (1977-2023)
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 …
