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Full-Text Articles in Plant Pathology
Change In Botanical Composition, Dry Matter Yield And Forage Quality Of Grassland After Five Seasons Of Extensification, W Kuhbauch, J Schellberg
Change In Botanical Composition, Dry Matter Yield And Forage Quality Of Grassland After Five Seasons Of Extensification, W Kuhbauch, J Schellberg
IGC Proceedings (1977-2023)
Extensification of grassland management in Germany has 2 major objectives (I) to reduce the surplus of crop and animal products, and (2) to diminish unwanted side effects against the environment from intensive production systems. Some of the programmes on offer require a reduced number of cuttings and grazings per season, including a very late first cut of the sward and a reduction of nitrogen fertiliser. In a 5-yenr experiment at the grassland research station Rengen, Eifel-mountain-range, Germany, extensification of this type on productive grassland sites created an unbalanced botanical composition and, with nitrogen applied, a major portion of quackgrass in …
Effects Of Nitrogen And Potassium Fertilizers On Forage Yield And Quality Of Dwarf Napiergrass, F H. Hsu, K Y. Hong
Effects Of Nitrogen And Potassium Fertilizers On Forage Yield And Quality Of Dwarf Napiergrass, F H. Hsu, K Y. Hong
IGC Proceedings (1977-2023)
The experiment was conducted to determine effects of nitrogen and potassium fertilisers on forage yield and quality of dwarf napiergrass (Pennisteum purpuretum). Four levels of N (460, 690, 920 and 1150 kg/ha), and 4 levels of K2O (150, 300, 450 and 600 kg/ha), and 1 level of P2O5 (144 kg/ha), were applied. Forage yield, leaf area per tiller, leaf elongation rate and forage quality of dwarf napiergrass were increased when N level applied was increased. Leaf growth, tiller number and forage yield were not affected by K applied. However, Ca and Mg contents in plant were reduced and …
Defoliation Of Grass (Cut Or Grazed) And Its Effect On Forage Quantity, H C. Hughes
Defoliation Of Grass (Cut Or Grazed) And Its Effect On Forage Quantity, H C. Hughes
IGC Proceedings (1977-2023)
All grassland farmers should try to optimise their grassland output during the growing season. Grassland farmers would improve their production results if they paid more attention to plant defoliation processes. Careful management of the grass ley will increase outputs by more than one third, without needing further inputs. Most grassland farmers need to have this improvement with no additional cost, especially in the present world economy.
A New Theory Of Feed Intake Regulation In Ruminants And Its Implications For Forage Quality Research, J.J M.H Ketelaars, B J. Tolkamp
A New Theory Of Feed Intake Regulation In Ruminants And Its Implications For Forage Quality Research, J.J M.H Ketelaars, B J. Tolkamp
IGC Proceedings (1977-2023)
The low voluntary intake of many roughages is commonly explained by a limited physical capacity of ruminants to process fibrous feeds. Recently, we developed a new theory of feed intake regulation assuming feed consumption to create both benefits for the animal (represented by the intake of net energy for maintenance and gain) and costs (represented by the total oxygen consumption of the feeding animal). For nonreproducing ruminants we have shown that voluntary intake of roughages is close to the optimum feed intake level, i.e., the level at which for the animal the ratio between benefits and costs becomes maximum. According …
Grazing Behavior Of Beef Cattle During First-Time Exposure To A Pearl Millet Pasture Treated With A Chemical Plant-Growth Regulator, J E. Arias, C T. Dougherty, M Collins
Grazing Behavior Of Beef Cattle During First-Time Exposure To A Pearl Millet Pasture Treated With A Chemical Plant-Growth Regulator, J E. Arias, C T. Dougherty, M Collins
IGC Proceedings (1977-2023)
Twelve tethered Angus cows were used to estimate 1he effect of structure and chemical composition of a pearl millet (Pennisetum americanum L. Leeke cv, Tifleaf-.2. hybrid) pasture.on grazing. behaviour. Cerone (ethephon (2-chloroethyl) phosphonic acid) plant growth retardant (fOR) was broadcast, establishing canopy heights of 0.855, 0.716 and 0,829 m;• neutral detergent fibr�� (NDP) of 65,3, 63 .. 4 ·and 64.91/'; acid detergent • fibre (ADF) of 37.6, 36.2 and,37.5%: and in vitro organic .matter digestibility (lVOMD) of 66.4, 67 .9 and 66.9% (Treatment 1. (Tl), T2 and ·T3, respectively). ·Effective biting rate (BBR) averaged 24, 28 an!l 25 bites/min …
Early And Late Grazing Of Cocksfoot And Tall Fescue Hay Fields Overseeded With Red Clover, E C. Prigge, W B. Bryan, E S. Goldman, G E. D'Souza
Early And Late Grazing Of Cocksfoot And Tall Fescue Hay Fields Overseeded With Red Clover, E C. Prigge, W B. Bryan, E S. Goldman, G E. D'Souza
IGC Proceedings (1977-2023)
Grazing hay fields with beef cattle during portions of the year when hay is traditionally fed, was examined to yield, quality of forage and composition of the sward. Pour managements were compared: early spring, one hay cutting, and late autumn grazing (GHG), 2 hay cuttings (HH), early spring grazing and 2 hay cuttings (GHH), and 1 hay culling and late au1umn· grazing (HG). The managements were applied lo tall foscue (Festuca arundinacea Schreb.) (TP) and cocksfool (Dactylis glomerata L.) (Cfl) hay fields, overseeded with red clover (Trifolium pratense L.). Annual herbage dry mailer production from the plots …
Forage Quality Determinants Of Mott Elephantgrass And Pennisetum Hybrids, L E. Sollenberger, J E. Moore, J A. Flores-C, C J. Chaparro, B Macoon
Forage Quality Determinants Of Mott Elephantgrass And Pennisetum Hybrids, L E. Sollenberger, J E. Moore, J A. Flores-C, C J. Chaparro, B Macoon
IGC Proceedings (1977-2023)
Daily gains of cattle grazing Mott elephantgrass (MB; Pennisteum purpureIum Schum.) arc approximately twice those obtained on other warm-season perennial grasses grown in Florida, USA, but plant characteristics responsible for the high forage quality of MB have not been identified. Three experiments were conducted during 1987- 1991 to determine factors that explain the high forage quality of MB and to assess the quality potential of P. purpureum x P. glaucum (L.) [R.Br.J x clephantgrass hybrids. Higher organic matter (OM) digestibility and intake of MB than Pensacola bahiagrass (PB; Paspalum nonatum Flugge) were associated with a lesser percentage of sclercnchyma (1.6 …
Dana- A Low Input Grass, For Sustainable Production In The Summer Rainfall Areas Of South Africa, P A. Pieterse, J Van Bosch, N F.G Rethman
Dana- A Low Input Grass, For Sustainable Production In The Summer Rainfall Areas Of South Africa, P A. Pieterse, J Van Bosch, N F.G Rethman
IGC Proceedings (1977-2023)
Bana, a South African hybrid between Pennisetum purpureum and Penmisetumn glantcum, was evaluated in a fertiliser trial at the University of Pretoria. The initial pH(H20) of the soil was 4.2, the P status 12 my/ kg and the K status 50 mg/kg, A third of the.plots were treated with Ca(OH)2, to raise the pH(H20) to 5.6, while on another third, the pH was raised to 6.5. There were 4 nitrogen treatments, 0, 100, 200 and 400 kg N/ha/year, Production and quality was measured during 3 consecutive seasons, after the season of establishment. The treatment which received no N produced 14.5 …
Improved Nutritive Value Of Different Forage Species Monitored By Near-Infrared Reflectance Spectroscopy, N Berardo, A Tava, L Valdicelli, M Odoardi
Improved Nutritive Value Of Different Forage Species Monitored By Near-Infrared Reflectance Spectroscopy, N Berardo, A Tava, L Valdicelli, M Odoardi
IGC Proceedings (1977-2023)
The development of rapid and reliable methods for the evaluation and prediction of forage quality has been the objective of many researchers for several years. The infrared-reflectance technique was developed for rapid prediction of nutritive value and chemical composition of feedstuffs, and for the last decade has been applied at our institute for the prediction of the nutritive value of forage samples from field trials and breeding programmes. Calibration curves have been developed for alfalfa (Medicago sativa L.), Italian ryegrass (Lolium multiflorum Lam.), cocksfoot (Dactylis glomerata L.), tall fescue (Festuca arundinacea· Schreb.), bromegrass (Bromus …
Chemical And Physical Changes Associated With Maturity Of Barley, Pearl Millet And Berseem Clover, Z Naseer, J P. Fontenot, R L. Grayson, V G. Allen, S M. Chaudhry
Chemical And Physical Changes Associated With Maturity Of Barley, Pearl Millet And Berseem Clover, Z Naseer, J P. Fontenot, R L. Grayson, V G. Allen, S M. Chaudhry
IGC Proceedings (1977-2023)
Experiments were conducted with barley (Hordeum vulgare) and millet (Pennisetum americanum), collected at vegetative, boot, heading and mature growth stages, and berseem clover (Trifollum alexandrium) collected al vegetative, bud and late bloom stages, In the grasses, stems and leaf sheaths were higher (P<0.05) in cell wall constituents, xylose, p-coumaric acid, and ferulic acid and lower (P<0.05) In in vitro dry matter digestibility (IVDMD) than leaf blades. In the legume, stems were higher (P<0,05) in cell wall constituents and xylose than petioles and leaflets, Al advanced maturity, scanning electron microscopy (SEM) showed increased lignification and decreased tissue digestion for leaf sheaths and stems of grasses, compared with leaf blades. In berseem,petioles were higher in IVDMD than leaflets and stems.
Protein Rather Than Energy Is The Limiting Nutrient For Lactating Cows Fed Large Amounts Of High Quality, T R. Dhiman, L D. Satter
Protein Rather Than Energy Is The Limiting Nutrient For Lactating Cows Fed Large Amounts Of High Quality, T R. Dhiman, L D. Satter
IGC Proceedings (1977-2023)
Two studies were conducted to determine whether protein or energy is first limiting for milk production when cows are fed diets containing large amounts of high quality forage. In the first study, infusion of 1.2 kg/day of soy-protein into the abomasum of cows consuming a diet of all lucerne (Medicago sativa L.) silage increased milk and milk protein production by 13 and 1996. Abomasal infusion of l.0 kg glucose was without effect. In the second study, supplementation of dietary protein resistant to degradation in the rumen to cows fed diets containing 7596 of lucerne silage increased milk production …
Evaluation Of Dwarf Napiergrass, W W. Hanna, W G. Monson, G M. Hill
Evaluation Of Dwarf Napiergrass, W W. Hanna, W G. Monson, G M. Hill
IGC Proceedings (1977-2023)
Napiergrass (Pennisetum purpureum Schum.), a robust perennial bunchgrass with high yield potential, rapidly loses quality and palatability without proper management as it matures. In 1985 and 1986, 2 dwarf napiergrass cultivars (Mott and Tift Nl29) and 2 tall cultivars (Merkeron and Tift N68) were evaluated for yield, quality and agronomic characteristics. Dwarf cultivars yielded about 1/3 as much as tall cultivars. Percentage leaf was 60-76 for dwarf cultivors and 43-46 for tall cultivars. Average In vitro dry matter digestibility (lVDMD) of whole plants was similar among cultivars except for Tift N68 which tended to be lower (605, 594, 610 …
Improving The Digestibility Of Warm-Season Perennial Grasses, K J. Moore, K P. Vogel, A A. Hopkins, J F. Pedersen, L E. Moser
Improving The Digestibility Of Warm-Season Perennial Grasses, K J. Moore, K P. Vogel, A A. Hopkins, J F. Pedersen, L E. Moser
IGC Proceedings (1977-2023)
The nutritional value of perennial warm-season grasses is limited primarily by digestible energy concentration. The relatively low digestibility of these grasses is due to their high concentration of fibre and its resistance to degradation in the rumen. The objective of this study was to evaluate quantitatively improvements in the digestibility of 5 experimental switchgrass (Panicum virgatum L.) populations in terms of a first-order digestion model in order to develop selection strategies for further improvement. The populations were developed by recurrent restricted phenotypic selection from a base population by l cycle of selection for low and 3 cycles for high …
White Clover To Improve Natural Grasslands In Southern Brazil, N R. Paim
White Clover To Improve Natural Grasslands In Southern Brazil, N R. Paim
IGC Proceedings (1977-2023)
Nine white clover (Trifolium repens L.) cultivars, among them 2 bred in Rio Grande do Sul, were evaluated in association with annuai ryegrass and pensacola bahiagrass. In a plot experiment, during 4 years, 17 harvests were cut to determine lhe dry matter (DM) yield of the mixture components. The annual ryegrass produced in· the first year 1634 kg/ha OM and in the second year, by natural reseeding, only 120 kg/ha. The pensacola bahiagrass increased DM yield from 954 kg/ha in the second year to 4588 kg/ha in the fourth year without any nitrogen (N) fertilisation. The while clover …
A Quality-Tested Hay Market Association In The South-Eastern Usa, Jimmy C. Henning, G D. Lacefield, B Sims
A Quality-Tested Hay Market Association In The South-Eastern Usa, Jimmy C. Henning, G D. Lacefield, B Sims
IGC Proceedings (1977-2023)
A hay marketing association was formed in Kentucky in 1989 as a means of increasing farm income and ·10 hedge against the uncertain future of tobacco production. The Kentucky Pride Hay Grower's Association (KPHGA) was designed to work in concert· with a hay testing and inspection service operated by the Kentucky Department of Agriculture (KDA). This testing service used near• infrared reflectance (NIR) technology as well as a visual appraisal by trained hay inspectors. The association may sell hay only which had been tested and inspected by the KDA. The hay association is a non-profit organisation designed to market Kentucky …
Comparison Of Yield, Forage Quality And Persistence Of 11 Grasses Grown With Irrigation In A Semi-Arid Climate, D E. Glover, G A. Kielly, R H. Cohen, P G. Jefferson
Comparison Of Yield, Forage Quality And Persistence Of 11 Grasses Grown With Irrigation In A Semi-Arid Climate, D E. Glover, G A. Kielly, R H. Cohen, P G. Jefferson
IGC Proceedings (1977-2023)
Nutritive quality of many grass species used for forage in the Northern Great Plains of Canada and the United States is not well documented, especially at different maturity stages. This study compared agronomic and forage quality characteristics of eleven grasses common to Saskatchewan. Botanical separation and quality analysis was undertaken at three growth stages. Meadow Brome (Bromus riparius), Russian Wildrye (Psathyrostachys juceus) and Altai Wildrye (Elymus angustus) were shown to have high leaf to stem ratios which corresponded with high protein levels. Separations showed persistence of Reed Canarygrass (Phalaris arudinaceus), Creeping Foxtail …
Experiences Of Eight Ohio Beef And Sheep Producers With Year Round Grazing, H M. Bartholomew, S L. Boyles, B Carter, E Vollborn, D Miller, R M. Sulc
Experiences Of Eight Ohio Beef And Sheep Producers With Year Round Grazing, H M. Bartholomew, S L. Boyles, B Carter, E Vollborn, D Miller, R M. Sulc
IGC Proceedings (1977-2023)
Livestock producers participated in a demonstration project to extend the grazing season and evaluate dormant forage quality and yield. Differences were not detected in yields among forage species but yield differences existed among sites. Yield estimates did not change over time across all forage species but some sites were only able to participate for two months. Producers utilizing fescue beyond November had reductions in herbage mass. Crude protein, available crude protein, acid detergent fiber, and neutral detergent fiber content differed among forage species and sites. Energy and lignin content were similar for all forage species and sites. Sodium and copper …
Cattle Weight Gain And Sward-Animal Nitrogen Relationships In Grazed Hemarthria Altissima Pastures, L E. Sollenberger, G F. Lima, J F. Holderbaum, W E. Kunkle, J E. Moore, A C. Hammond
Cattle Weight Gain And Sward-Animal Nitrogen Relationships In Grazed Hemarthria Altissima Pastures, L E. Sollenberger, G F. Lima, J F. Holderbaum, W E. Kunkle, J E. Moore, A C. Hammond
IGC Proceedings (1977-2023)
Limpograss (Hemarthria altissima [Poir.] Stapf et C.E. Hubb.) in vitro digestion is greater than most perennial grasses adapted to Florida. Weight gain of cattle grazing limpograss has been lower than expected due in part to low herbage N concentration. Experiments were conducted on limpograss pastures to assess N fertilization, overseeding of the legume aeschynomene (Aeschynomene americana L), and feeding of N supplements to cattle as means of overcoming this limitation. Greater N fertilization, overseeding aeschynomene, and supplementation (corn-urea mixtures) increased weight gain 0.30, 0.23, and 0.24-0.35 kg d-1, respectively, over control treatments. Herbage digestible organic matter:crude protein ratio …
Utilization Of Regrowth For Forage In Seed Stands Of Meadow Fescue (Festuca Pratensis Huds.), Lars T. Havstad
Utilization Of Regrowth For Forage In Seed Stands Of Meadow Fescue (Festuca Pratensis Huds.), Lars T. Havstad
IGC Proceedings (1977-2023)
Intensive utilization of autumn regrowth for forage production was compared to other autumn treatments in nine seed production fields of meadow fescue (Festuca pratensis) during 1993-96. Uncut plots without a N application in autumn always had the lowest number of reproductive tillers and the lowest subsequent year seed yields. Intensive utilization of regrowth, by application of 80 kg N ha-1 immediately after seed harvest and forage harvests in September or October, did not have any negative impact on the following yearsí seed yields. Delaying forage harvest from 10 September to 10 October increased forage yields, but lowered the …
Manitoba Green Gold- An Extension Project Linking High Quality Hay With High Profits, Dennis Joosse
Manitoba Green Gold- An Extension Project Linking High Quality Hay With High Profits, Dennis Joosse
IGC Proceedings (1977-2023)
Improving the quality of harvested forage is seen as an important step in improving the productivity of Manitoba’s beef, dairy and cash hay operations. One of the most important determinants of forage quality is stage of maturity when harvested. Timely cutting is particularly important during first cut because it represents a major portion of the total harvest, and forage quality drops rapidly during this period.
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.
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 (1977-2023)
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. …
Forage Quality Of 'Matua' Bromegrass (Bromus Wildenowii), L G. Brown, J K. King
Forage Quality Of 'Matua' Bromegrass (Bromus Wildenowii), L G. Brown, J K. King
IGC Proceedings (1977-2023)
Research on forage quality of ‘Matua’ prairiegrass (Bromus wildenowii) is limited in Kentucky. Due to hot summers, mild winters and a 200-day long growing season in Kentucky, quality as well as management practices may differ from those reported in research from other climates. The objective of this study was to evaluate the forage quality of cool-season grasses including Matua, grazing bromegrass (Bromus stamineus), smooth bromegrass (Bromus inermis), tall fescue (Festuca arundinacea) and orchardgrass (Dactylis glomerata). The experiment was conducted in the field and greenhouse. Four harvests were obtained from each. Quality analyses …
Improvement Of Subtropical Native Grasslands With The Introduction Of Forage Species And Phosphorous Fertilizers, M N. Baby, S.B C. Lustosa, A Moraes, A.C V. Motta, R L. Stanger
Improvement Of Subtropical Native Grasslands With The Introduction Of Forage Species And Phosphorous Fertilizers, M N. Baby, S.B C. Lustosa, A Moraes, A.C V. Motta, R L. Stanger
IGC Proceedings (1977-2023)
The experiment took place in Guarapuava-Brazil, from May 1994 to January, 1996 to evaluate the improvement of a subtropical native grassland by the introduction of species and phosphate fertilization. It was observed that for the higher dose applied there occurred an increase over the production of dry matter and crude protein production and absorption of P and K in the plant. A response was not found to the 180 kg P2O5/ha application probably because of the high capacity of soil adsorption, the method of fertilizer application, non favorable climatic conditions and liming interference. The single superphosphate-SS application was superior to …
Triticale As Early Winter Forage For Meat Calves On Sandy Acidic Soils, M Bemhaja, D F. Risso
Triticale As Early Winter Forage For Meat Calves On Sandy Acidic Soils, M Bemhaja, D F. Risso
IGC Proceedings (1977-2023)
The use of triticale as a winter forage, improves animal performance. The objective of this study was to characterize a triticale crop during winter months, in relation to liveweight gain and animal production, under different grazing systems on sandy acidic soils. Three treatments were imposed to weaned calves of 110 kg liveweight average. Continuous grazing at a herbage allowance of 4% liveweight in dry matter (C4), rotational at an herbage allowance of 4% dry matter (R4) and rotational grazing at an herbage allowance of 2. 5% liveweight (R2. 5). Individual calf gain was 585 g/day for C4 and R4 and …
Potassium Accumulation In Perennial Cool-Season Grass Forage, J H. Cherney, D.J R. Cherney
Potassium Accumulation In Perennial Cool-Season Grass Forage, J H. Cherney, D.J R. Cherney
IGC Proceedings (1977-2023)
Perennial grasses are well adapted to the northern U.S.A. and Canada, but the potassium (K) content of grass forage is a major concern in regard to dairy cattle nutrition. Our goal was to identify factors influencing potassium content of grasses, so that a grass management strategy for controlling potassium content could be formulated. Separate experiments were conducted with several perennial coolseason grass species and varieties. Nitrogen fertilization and harvest management also were evaluated. Aside from the obvious positive effect on K concentration caused by commercial K fertilizer or by animal manure application, K concentration was influenced by grass species, grass …
Comparison Of Composition And Degradation Characteristics Of Early Bloom Alfalfa With Fenugreek (Trigonella Foenum-Graecum) Forages Harvested At Different Stages Of Maturity, Z Mir, P S. Mir, S N. Acharya, L A. Goonewardene
Comparison Of Composition And Degradation Characteristics Of Early Bloom Alfalfa With Fenugreek (Trigonella Foenum-Graecum) Forages Harvested At Different Stages Of Maturity, Z Mir, P S. Mir, S N. Acharya, L A. Goonewardene
IGC Proceedings (1977-2023)
The objective of this study was to compare the composition and degradation characteristics of early bloom alfalfa and fenugreek harvested after 9, 15 and 17 wk of growth. Crude protein (CP) content of fenugreek cut at 9, 15 and 17 wk was lower (P<0.05) than that of alfalfa. Neutral detergent fibre (NDF) and lignin content of fenugreek harvested after 15 and 17 wk were higher (P<0.05) than that of alfalfa. Ash content was lower (P<0.05) in fenugreek than for alfalfa. In vitro dry matter disappearance (IVDMD) of fenugreek cut at 15 and 17 wk was similar to that of alfalfa. Total in vitro gas production of fenugreek cut at the three stages of growth was not significantly different from those observed for alfalfa. Results indicate that chemical composition and IVDMD of fenugreek at all stages of …
Evaluation Of Tropical And Subtropical Forage Grasses In The Northwest Region Of Rio Grande Do Sul, Brazil, R B. Medeiros, J M. Souza, J E. G. Zambra
Evaluation Of Tropical And Subtropical Forage Grasses In The Northwest Region Of Rio Grande Do Sul, Brazil, R B. Medeiros, J M. Souza, J E. G. Zambra
IGC Proceedings (1977-2023)
A collection of 137 accessions of tropical and subtropical grasses of Pennisetum purpureum (53), Panicum maximum (10), Brachiaria spp. (9), Hemarthria altissima (19), Setaria spp. (11), Digitaria spp. (22), Cynodon spp.(7) and Paspalum spp. (6) was evaluated for frost tolerance (FT), dry matter yield per cut (DMYC), number of cuts (NC) and accumulated dry matter yield per year (ADMY). Crude protein content (CPC), leaf/stem ratio (L/S), pubescence (P) and animal preference under grazing (AP) were also recorded in 20 entries of in P. purpureum. Data exploration involved cluster analysis and ordination, revealing the most promising entries among and within …
Forage Production Potential Of Poa Arachnifera Torr In Semi-Arid Climates, J C. Read, M A. Sanderson, G W. Evers, P W. Voigt, J A. Reinert
Forage Production Potential Of Poa Arachnifera Torr In Semi-Arid Climates, J C. Read, M A. Sanderson, G W. Evers, P W. Voigt, J A. Reinert
IGC Proceedings (1977-2023)
This study was undertaken to determine the forage potential of Texas bluegrass (Poa arachnifera Torr). Texas bluegrass is a perennial coolseason grass native to Kansas, Oklahoma, western Arkansas, and the central region of Texas, USA (Gould, 1975). Thirteen different accessions were established in 1988 at the Texas A&M University Centers at Dallas and Stephenville and tested for 2 years. Mean yields at Stephenville and Dallas were 3610 and 6022 kg ha-1. Two synthetic varieties (Syn-1 and Syn-2) were tested from 1990 to 1995 at four locations in Texas. Yields of Syn-1 was greater than Syn-2 whereas Syn- 2 provided …
Development Of Megathyrsus Maximus Genotypes For Intensification Of Cattle Rearing In Brazil, Liana Jank, M. F. Santos, Sanzio Carvalho Barrios, Cacilda Borges Do Valle, Rosangela Maria Simeão
Development Of Megathyrsus Maximus Genotypes For Intensification Of Cattle Rearing In Brazil, Liana Jank, M. F. Santos, Sanzio Carvalho Barrios, Cacilda Borges Do Valle, Rosangela Maria Simeão
IGC Proceedings (1977-2023)
Megathyrsus maximus is a forage species used over 30 million hectares in Brazil and in the surrounding countries for intensification of the cattle production systems. Due to the large area and distinct biomes in which it is used, there is a need to continuously develop more productive and adapted cultivars to each biome and use. Three apomictic accessions were crossed with five sexual plants at Embrapa Beef Cattle in Campo Grande, MS, Brazil in 2014. More than 1100 hybrids were planted in a spaced-plant field and evaluated visually for regrowth after cuts and for disease and pest damage. In 2016, …