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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 …
Lamb Performance On Russian Wildrye And Russian Wildrye-Legume Mixtures, David W. Koch, Limei Yun
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, M J. Arzadun, M H. Vallejos, M M. Piersanti
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, Atiq Ur Rehman, J B. Mackintosh, B E. Warren, D R. Lindsay
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", 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 …
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
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, C J. Escuder, C A. Cangiano
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 …
Pasture Life Lengthening And Beef Production Increase Through Interseeding, J A. Josifovich, J O. Scheneiter
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, 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 (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, 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 …
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 (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, 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.
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 (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.
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 (1977-2023)
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 …
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 (1977-2023)
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 …
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 (1977-2023)
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 …
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 (1977-2023)
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 …
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 (1977-2023)
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. …
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 …
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 (1977-2023)
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 (1977-2023)
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 (1977-2023)
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 (1977-2023)
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%).
Effect Of The Cutting Frequency On Yield And Crude Protein And Mineral Contents Of Panicum Maximum, D E. Morillo, J Faria-Marmol, R Gonzalez
Effect Of The Cutting Frequency On Yield And Crude Protein And Mineral Contents Of Panicum Maximum, D E. Morillo, J Faria-Marmol, R Gonzalez
IGC Proceedings (1977-2023)
Dry matter yield per cutting and total production, crude protein content and mineral composition of Guineagrass (Panicum maximum Jacq.) as affected by three cutting frequencies (28, 42 and 56 days) were evaluated in a wet/dry tropical area in Venezuela. Only CP was affected (P<0.05) by the cutting frequency, decreasing (P<0.05) from 11.9 to 9.2 % as the harvest interval increased. Mean DM yield per cutting and accumulated over the 336-day experiment (661 and 5140 kg/ha) were low, probably due to low rainfall (600 mm) during the trial. Mean macro (%) and microelement (ppm) concentrations were: Ca, 0.9; P, 0.31; Mg, 0.45; K, 2,17; Na, 0.09; Cu, 11; Fe, 133 and Mn, 269, which were regarded as nutritionally adequate for grazing ruminants .
Growth Curves And Herbage Quality Of Birdfoot Trefoil In Dryland Areas Of The Andes Foothills, H Acuna
Growth Curves And Herbage Quality Of Birdfoot Trefoil In Dryland Areas Of The Andes Foothills, H Acuna
IGC Proceedings (1977-2023)
The objectives of this study were to describe the growth curves and the herbage quality changes of birdfoot trefoil (Lotus corniculatus) during spring and early summer in the dryland areas of The Andes foothills. The DM accumulation, from different dates, was fitted to a logistic function, y = A/ 1 + b e-ax. The derivative of that function, dy/dx = Abaeax /(1 + be-ax )2 , allowed determination of the rates of growth. The curves show that the maximum accumulation was reached around mid December and the highest rates of growth were registered between 15 September and 15 November ( …
Defoliation Effects On Digestible Dry Matter Yield Of Tall Wheatgrass, M A. Brizuela, S Laplace, M S. Cid
Defoliation Effects On Digestible Dry Matter Yield Of Tall Wheatgrass, M A. Brizuela, S Laplace, M S. Cid
IGC Proceedings (1977-2023)
The objective of our study was to assess the effect of four different defoliation frequencies upon the digestible dry matter (DDM) yield of tall wheatgrass (Thinopyrum ponticum) during the spring season in Balcarce, Buenos Aires province, Argentina. Four sets of three plots in a wheatgrass dominated pasture were defoliated every 7, 14, 21 and 28 days. Neither total pasture nor wheatgrass DM yields accumulated throughout the experimental period differed (p>0.05) among treatments. DMivD of wheatgrass declined (p<0.05) through time in all treatments. The accumulated DDM yield differed (p< 0.05) among treatments (F7=967.6b; F14= 1036.6ab; F21= 1167.6ab; F28= 1419.0a DDM kg ha-1). A 28 day defoliation frequency should be applied to tall wheatgrass to obtain the highest digestible dry matter yields.
White Clover Versus Nitrogen Fertilizer 2. Sheep Production, J.P J. Erens, K B. Miller, R J. Lucas, J.G. H. White, H S. Easton
White Clover Versus Nitrogen Fertilizer 2. Sheep Production, J.P J. Erens, K B. Miller, R J. Lucas, J.G. H. White, H S. Easton
IGC Proceedings (1977-2023)
Animal production on pasture systems provided with either fertiliser or biological nitrogen was compared. A grazing experiment was sown at AgResearch Gore (46°07’ S; 168°54’ E) in October, 1989. Four ryegrass/white clover paddocks were compared to four ryegrass paddocks, with the latter receiving 270 kg nitrogen/ha/year. Each paddock of 0.5 ha was subdivided for rotational grazing at 20 ewes/ ha. In comparison to the ryegrass pastures, mixed pastures produced 22% more herbage and were subsequently 22% higher stocked, lamb liveweight gains were 12% higher during lactation and 42% higher after weaning resulting in earlier sale at higher carcass weights. Ewe …
Agronomic Evaluation Of Novel Germplasm Under Grazing: Arachis Pintoi Bra-031143 And Paspalum Atratum Bra-009610, A O. Barcellos, E A. Pizarro, N L. Costa
Agronomic Evaluation Of Novel Germplasm Under Grazing: Arachis Pintoi Bra-031143 And Paspalum Atratum Bra-009610, A O. Barcellos, E A. Pizarro, N L. Costa
IGC Proceedings (1977-2023)
The effect of the animal on the pasture and their reverse consequence was studied on two replicated areas of 0.27 and 0.18 ha in a grasslegume sward established in a poorly humid drained soil in the Brazilian Cerrado. The A. pintoi BRA-031143 and P. atratum BRA- 009610 sward was evaluated during four consecutive years under two grazing pressures (GP). The imposed GP affected the botanical composition and pasture availability. Mean live weight gain/animal/ day under the two imposed GP varied from 387+17g, 578+68g, 697+35g and 687+123g between the 1992/93 and 1995/96 rainy seasons. During the dry season the LWG/animal/day varied …
The Effect Of Glyphosate On Dm Yield And Quality Of Forage Sorghum, T Kipnis, Sofia Kaller, G Krivat, Levana Dvash, D Ben-Ghedalia
The Effect Of Glyphosate On Dm Yield And Quality Of Forage Sorghum, T Kipnis, Sofia Kaller, G Krivat, Levana Dvash, D Ben-Ghedalia
IGC Proceedings (1977-2023)
The possibility of improving the forage quality of sorghum (Sorghum bicolor L. Moench) by using herbicide was assessed in field trials. Glyphosate (Roundup) reduced cell wall content and increased the digestibility of the dry matter. When sprayed towards the end of vegetative growth, quality improvement could be achieved without reduction in yield. Glyphosate may enhance accumulation of sugars, however, the possibility that the herbicide improves forage quality by affecting cell wall structure and digestibility cannot be ruled out.