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Articles 7471 - 7500 of 17814

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Effects Of Dry Matter Content And Microbial Additive On Tifton 85 (Cynodon Dactylon Ssp.) Wilted Silage Fermentation Parameters, Luiz Gustavo Nussio, F. G. Castro, J. M. Simas, C. M. Haddad, P. Toledo, A. L. Merchan Dec 2021

Effects Of Dry Matter Content And Microbial Additive On Tifton 85 (Cynodon Dactylon Ssp.) Wilted Silage Fermentation Parameters, Luiz Gustavo Nussio, F. G. Castro, J. M. Simas, C. M. Haddad, P. Toledo, A. L. Merchan

IGC Proceedings (1977-2023)

The objective of this study was to evaluate the wilting and the addition of a bacterial-enzymatic additive effects on the fermentation parameters of Tifton 85 (Cynodon dactylon spp.) silage. Forage was stored as 326 kg bales wrapped with a plastic film. Treatments consisted of 5 forage dry matter levels (20-30%, 30-40%, 40-50%, 50 -60% e 60 a 70%) without additive and 3 dry matter levels (20-30%, 40-50%, e 60-70%) with additive. Buffered propionic acid solution was sprayed onto 60-70% dry matter bales, prior to wrapping, determining an additional treatment. Core samples were taken at 0, 6, 12 hours …

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Dry Matter Losses In Tanzânia Grass (Panicum Maximum, Jacq, Cv. Tanzânia) Silage, M. A. A. Balsalobre, Luiz Gustavo Nussio, P. M. Santos, R. F. Crestana, R. N. S. Aguiar, M. Corsi Dec 2021

Dry Matter Losses In Tanzânia Grass (Panicum Maximum, Jacq, Cv. Tanzânia) Silage, M. A. A. Balsalobre, Luiz Gustavo Nussio, P. M. Santos, R. F. Crestana, R. N. S. Aguiar, M. Corsi

IGC Proceedings (1977-2023)

A spring cut of Tanzânia grass (Panicum maximum, Schum, cv. Tanzânia) was harvested (20% DM), in a 60-day regrowth sward. Laboratory silos (20 L) were filled with chopped forage. Nine treatments, in a 3 x 3 factorial arrangement with four replication each. Treatments consisted on the addition of 3 levels of dehydrated and pellet citrus pulp (CP) (0, 5 and 10%- fresh basis) combined with 3 particle sizes (Larger (1), medium (2) and smaller (3)). After 60 days silos were opened, effluent and gas yield was calculated. Reduction in particle size lowered gas losses in silage. Major benefit …

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Possibilities To Avoid Growth Of Clostridia And/Or Fungi In Wilted Silage By Use Of Organic And Inorganic Salts, Martin Knický, P. Lingvall Dec 2021

Possibilities To Avoid Growth Of Clostridia And/Or Fungi In Wilted Silage By Use Of Organic And Inorganic Salts, Martin Knický, P. Lingvall

IGC Proceedings (1977-2023)

The hygienic quality of silage will be of great importance in the future as poor quality not only influences the animal production but also the animal health and the food quality. This study examined the impact of mixtures of sodium benzoate (NaB), sodium nitrite (NaN), hexamine (HMTA), sodium propionate (NaP), sodium bisulphite, and propionic acid on low and high wilted clover/grass. The silage (crop wilted to 300 or 600 g DM kg-1 of fresh weight) consisted of about 50% red clover (Trifolium pratense) and 50% timothy (Phleum pratense) and the study covered 7 additive treatments. …

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An Assessment Of Grass Regeneration Nurseries At The Western Regional Plant Introduction Station, 1994-1997, V. L. Bradley, R. C. Johnson Dec 2021

An Assessment Of Grass Regeneration Nurseries At The Western Regional Plant Introduction Station, 1994-1997, V. L. Bradley, R. C. Johnson

IGC Proceedings (1977-2023)

The Western Regional Plant Introduction Station (WRPIS), Pullman, WA, USA, maintains over 17,000 accessions of forage and turf grasses that are mostly wind cross-pollinated and highly heterogenic. Regeneration procedures have been refined over the past nine years to include improved isolation distance and increased plant populations for regeneration. The grass regeneration nurseries planted from 1994 through 1997 were evaluated using data recorded in the Germplasm Resources Information Network (GRIN) and it was found that approximately 78% of the regenerations were successful. Reasons for failures were contributed to inadequate plant number, presence of disease, seed shattering, and unsuitable growing environment. Several …

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Assessment Of Ensilability Of Six Tropical Grasses Using Three Different Approaches, B. Zierenberg, K. Friedel, A. Glatzle, A. Chudy Dec 2021

Assessment Of Ensilability Of Six Tropical Grasses Using Three Different Approaches, B. Zierenberg, K. Friedel, A. Glatzle, A. Chudy

IGC Proceedings (1977-2023)

The preparation of well-preserved silages is considered increasingly important in the tropics and subtropics. In these regions silage production played a minor role in the past, as ensilability of tropical grasses is generally considered poor. In this study ensilability of six tropical grasses grown in the Paraguayan Chaco Boreal (Panicum maximum cv. Gatton, Cynodon plectostachyus, Cynodon sp. cv. Tifton 85, Digitaria eriantha var. pentzii, Panicum maximum cv. Tanzania and Digitaria milanjiana) was assessed in three different ways: (1) The chemical determination of the ratio between water soluble carbohydrates (WSC) and buffer capacity (BC), (2) the biological …

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Improving The Feeding Value Of Cotton Stalk, Wheat Straw And Rice Straw With Ozonation, Meiji Okamoto, Masaaki Hanada, R. Aoyama, R. Kim, N. Kaiga Dec 2021

Improving The Feeding Value Of Cotton Stalk, Wheat Straw And Rice Straw With Ozonation, Meiji Okamoto, Masaaki Hanada, R. Aoyama, R. Kim, N. Kaiga

IGC Proceedings (1977-2023)

The experiment was conducted to study the effect of ozone treatment on the feed value of cotton stalk, wheat straw and rice straw. These feeds were cut into 2 cm and 4 cm lengths, and rolled before ozonizing. The ozonizing periods were 30 min. 60min and. 120 min. The Acid Detergent Lignin (ADL) concentration of the feeds decreased with ozone treatment. Except for rice straw, the short cutting treatment (2cm) decreased the concentration of ADL and Cellulose of the ozonized cotton stalk and wheat straw. Rolling and ozone treatment were effective in decreasing the ADL concentration of cotton stalk. IVDMD …

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Fermentation Quality Of Phasey Bean And Guineagrass Silages, Y. Imura, T. Namihira, Yasuhiro Kawamoto Dec 2021

Fermentation Quality Of Phasey Bean And Guineagrass Silages, Y. Imura, T. Namihira, Yasuhiro Kawamoto

IGC Proceedings (1977-2023)

Silages were made from guineagrass (Panicum maximum Jacq. var. maximum) and phasey bean (Macroptilium lathyroides (L.) Urb.) at three-growth stages. The silages were investigated in relation fermentation quality. Phasey bean silage showed a better fermentation quality than guineagrass silage. The latic acid to total acid ratio of phasey bean silage was higher than 500g/kg DM, and the volatile basic nitrogen to total nitrogen ratio was lower than 100g/kg. It is concluded that phasey bean is an unique legume suitable for good silage fermentation.

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Identifying Biogeochemical Factors Responsible For The Cyclical Precipitation Of Sphalerite And Galena In Low Temperature Mississippi Valley Type Ore Deposits, Daniel John Makowsky Dec 2021

Identifying Biogeochemical Factors Responsible For The Cyclical Precipitation Of Sphalerite And Galena In Low Temperature Mississippi Valley Type Ore Deposits, Daniel John Makowsky

Theses and Dissertations

Mississippi Valley Type (MVT) lead and zinc deposits provide a significant source of sedimentary galena and sphalerite. However, geochemical characteristics and genesis including the source and production of hydrogen sulfide required for galena and sphalerite ore formation and the reasoning for quick, episodic mineralization is not fully understood. By simulating regional MVT brines, the input and effect of biological by-products during the development of these ores as well as the cause of cyclicity within MVT deposits have been observed. Experiments using compositions from MVT fluid inclusions were conducted over two-week periods. Variables during the experiments included temperature, CO2, hydrogen sulfide …

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The Effects Of Cover Crops In An Integrated Livestock/Continuous Corn Cropping System In East-Central Mississippi, Ken Randolph Waddell Dec 2021

The Effects Of Cover Crops In An Integrated Livestock/Continuous Corn Cropping System In East-Central Mississippi, Ken Randolph Waddell

Theses and Dissertations

There is growing interest within the agricultural industry on how cover crop systems affect soil health and economic productivity in integrated crop-livestock systems. This study investigated the combined effects of cover crop species; no-till and conventional till; and grazed (G) and un-grazed (UG) in a continuous corn (Zea mays) production system in east-central Mississippi. Cover crops were established in the fall of 2019 and 2020 in two separate field studies. Corn yield was not affected by grazing or tillage but was affected by cover crop species. We then compared the difference in cover crop species treatments with their respective corn …

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Burning And Management Alternatives On Forage Accumulation And Floristic Composition Of A Native Pasture, I. Heringer, A. V. A. Jacques Dec 2021

Burning And Management Alternatives On Forage Accumulation And Floristic Composition Of A Native Pasture, I. Heringer, A. V. A. Jacques

IGC Proceedings (1977-2023)

The forage accumulation and floristic composition of native pasture, submitted to burning and alternative management practices, was evaluated during one year. The experimental design was a completely randomized, with five treatments and three replications. The forage accumulation was evaluated in a grazing exclusion cage, and the floristic composition was estimated with Botanal method. The systems without burning were more productive and, among these, the forage accumulation was similar between the one without burning and without mowing and the improve treatments, and the annual accumulation was greater than 9,000 Kg/ha of green forage dry matter. The species Paspalum notatum, P. …

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Nitrogen Flow To Duodenum Of Steers Grazing On Orchardgrass And Meadowfescue Pastures, Masaaki Hanada, Y. Aibibula, Meiji Okamoto Dec 2021

Nitrogen Flow To Duodenum Of Steers Grazing On Orchardgrass And Meadowfescue Pastures, Masaaki Hanada, Y. Aibibula, Meiji Okamoto

IGC Proceedings (1977-2023)

This experiment was conducted to evaluate nitrogen flow to the duodenum of steers grazing on orchardgrass (Dactylis glomerata L., OG) or meadowfescue (Festuca elatior L., MF) pasture. Holstein steers fitted with cannulas in the rumen and duodenum were used. Nitrogen content and in vitro dry matter digestibility of herbage did not differ between OG and MF pastures. Herbage nitrogen intake of steers grazing on OG and MF pastures averaged 229 and 271 g/day, respectively. Nitrogen flows to the duodenum of steers grazing on orchardgrass and meadowfescue pastures averaged 187 and 195g/d, respectively. Microbial nitrogen flow to the duodenum …

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The Effects Of Post-Grazing Sward Conditions On Herbage Accumulation In Winter And Spring, F. P. Hughes, P. N. P. Matthews, C. Matthew Dec 2021

The Effects Of Post-Grazing Sward Conditions On Herbage Accumulation In Winter And Spring, F. P. Hughes, P. N. P. Matthews, C. Matthew

IGC Proceedings (1977-2023)

Two on-farm experiments were conducted in the winter and spring of 1998 on a New Zealand seasonal production dairy farm to determine the effect of herbage mass present after grazing on subsequent pasture growth rates. Experiments involved a range of post-grazing levels of herbage mass (870, 1140, 1390, 1640, 1920 kg DM/ha in winter, and 1100, 1420, 1700 and 1910 kg DM/ha in spring) representing a range in cow intakes of 6.1-20.0 and 7.6-18.5 kg DM/cow/day in winter and spring, respectively. In both experiments there was a range of postgrazing herbage mass (1200-1600 kg DM/ha in winter and 1400-1800 kg …

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Late Cretaceous Paleoceanographic Evolution And The Onset Of Cooling In The Santonian At Southern High Latitudes (Iodp Site U1513, Se Indian Ocean), Maria Rose Petrizzo, Kenneth G. Macleod, David K. Watkins, Erik Wolfgring, Brian T. Huber Dec 2021

Late Cretaceous Paleoceanographic Evolution And The Onset Of Cooling In The Santonian At Southern High Latitudes (Iodp Site U1513, Se Indian Ocean), Maria Rose Petrizzo, Kenneth G. Macleod, David K. Watkins, Erik Wolfgring, Brian T. Huber

Department of Earth and Atmospheric Sciences: Faculty Publications

The latest Cenomanian to Santonian sedimentary record recovered at IODP Expedition 369 Site U1513 in the Mentelle Basin (SE Indian Ocean, paleolatitude 60°S at 85 Ma) is studied to interpret the paleoceanographic evolution in the Southern Hemisphere. The planktonic foraminiferal assemblage changes, the depth ecology preferences of different species, and the surface and seafloor temperature inferred from the stable isotopic values measured on foraminiferal tests provide meaningful information to the understanding of the Late Cretaceous climate. The hothouse climate during the Turonian-Santonian, characterized by weak latitudinal temperature gradients and high atmospheric CO2 concentrations, is followed by a progressive cooling …

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Pengaruh Bahan Organik Terhadap Kesuburan Tanah Serta Pertumbuhan Dan Fisiologi Tanaman Kakao Muda Hasil Transplanting Di Tanah Inceptisol, Santi Rosniawaty, Rija Sudirja, Mira Ariyanti, Syariful Mubarok, Agus Wahyudin Dec 2021

Pengaruh Bahan Organik Terhadap Kesuburan Tanah Serta Pertumbuhan Dan Fisiologi Tanaman Kakao Muda Hasil Transplanting Di Tanah Inceptisol, Santi Rosniawaty, Rija Sudirja, Mira Ariyanti, Syariful Mubarok, Agus Wahyudin

Jurnal Kultivasi

Penanaman bibit kakao pada tanah inceptisol memiliki beberapa kendala, salah satunya adalah bahan organik rendah. Peningkatan pertumbuhan tanaman kakao pada awal tanam dapat dilakukan dengan pemberian bahan organik. Saat ini terdapat bahan organik berbentuk cair, namun pengaruhnya terhadap kakao belum menghasilkan belum diketahui, karena pada umumnya bahan organik yang digunakan pada tanaman kakao berbentuk padat. Tujuan penelitian ini untuk melihat pengaruh bahan organik berbeda (asam humat dan pupuk kotoran sapi) terhadap kesuburan tanah, pertumbuhan, dan fisiologi tanaman kakao belum menghasilkan. Percobaan dilakukan pada bulan Januari sampai Desember 2017 di kebun percobaan Fakultas Pertanian, Universitas Padjadjaran, Jatinangor. Rancangan percobaan yang digunakan …

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Modeling Nitrous Oxide Emissions From Large-Scale Intensive Cropping Systems In The Southern Amazon, Ciniro Costa Jr., Gillian L. Galford, Michael T. Coe, Marcia Macedo, Kathijo Jankowski, Christine S. O'Connell, Christopher Neill Dec 2021

Modeling Nitrous Oxide Emissions From Large-Scale Intensive Cropping Systems In The Southern Amazon, Ciniro Costa Jr., Gillian L. Galford, Michael T. Coe, Marcia Macedo, Kathijo Jankowski, Christine S. O'Connell, Christopher Neill

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Nitrogen (N) fertilizer use is rapidly intensifying on tropical croplands and has the potential to increase emissions of the greenhouse gas, nitrous oxide (N2O). Since about 2005 Mato Grosso (MT), Brazil has shifted from single-cropped soybeans to double-cropping soybeans with maize, and now produces 1.5% of the world's maize. This production shift required an increase in N fertilization, but the effects on N2O emissions are poorly known. We calibrated the process-oriented biogeochemical DeNitrification-DeComposition (DNDC) model to simulate N2O emissions and crop production from soybean and soybean-maize cropping systems in MT. After model validation with …

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Spring Regrowth And Steer Performance On Tifton 85 And Coastal Bermudagrass Pastures Following Sod-Seeding With Ryegrass, G. M. Hill, R. N. Gates Dec 2021

Spring Regrowth And Steer Performance On Tifton 85 And Coastal Bermudagrass Pastures Following Sod-Seeding With Ryegrass, G. M. Hill, R. N. Gates

IGC Proceedings (1977-2023)

Effects of autumn sod-seeded ryegrass (Lolium multiflorum; cv. Passerel; 37.7 kg/ha) in bermudagrass pastures (Cynodon spp.; cv. Coastal and cv. Tifton 85) on grazing steer performance were determined. Ryegrass was sod-seeded in three of six .81 ha pastures of each bermudagrass. Forage height was adjusted to10 cm during spring. Stocking rates were unaffected by ryegrass in Tifton 85 pastures, but they were higher (P < .05) for Tifton 85 than Coastal. Ryegrass increased tester steer average daily gains by 34% (.86 vs .64 kg/day; P < .01), and gain/ha by 26% (387 vs 306 kg/ha; P < .05). Higher stocking rates resulted in 22% more grazing days (515 vs 421 days/ha; P < .01), and 30% higher gain/ha (391 vs 301 kg/ha; P < .05) for Tifton 85 than Coastal pastures. Ryegrass did not affect stocking rates or steer performance on Tifton 85, but it depressed both on Coastal pastures.

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Intensive Grazing Systems For Beef Cattle Production, F. P. Fontenot, V. G. Allen, M. A. Cochran, N. B. Frank Dec 2021

Intensive Grazing Systems For Beef Cattle Production, F. P. Fontenot, V. G. Allen, M. A. Cochran, N. B. Frank

IGC Proceedings (1977-2023)

The objective of this study was to compare grazing systems that used rotational and continuous stocking for beef cows-calves and stocker cattle grazing fescue (Festuca arundinacea) and clover (Trifolium repens). For each system seven cows/calves and seven stocker steers were used within each of two replicates. The cows and stockers grazed stockpiled forage and were fed hay in winter, and grazed growing forage during spring and summer. Cows in the rotational system gained at a faster rate (P< . 05) from October to April than those in the continuous system. Daily gains of calves were higher (P< . 05) for the continuous system. Rate of gain during the last 28 days was higher (P< . 05) for the stockers in the rotational system. Average hay yields were not different for the two stocking systems, but more (P< . 05) hay was fed to the cattle in the continuous system. The system that used continuous stocking was more easily managed and required less labor and facilities.

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Fungal Community And Functional Responses To Soil Warming Are Greater Than For Soil Nitrogen Enrichment, Mark A. Anthony, Melissa A. Knorr, Jessica A. M. Moore, M. Simpson, Serita D. Frey Dec 2021

Fungal Community And Functional Responses To Soil Warming Are Greater Than For Soil Nitrogen Enrichment, Mark A. Anthony, Melissa A. Knorr, Jessica A. M. Moore, M. Simpson, Serita D. Frey

Faculty Publications

Soil fungi are key regulators of forest carbon cycling and their responses to global change have effects that ripple throughout ecosystems. Global changes are expected to push many fungi beyond their environmental niches, but there are relatively few studies involving multiple, simultaneous global change factors. Here, we studied soil fungal diversity, community composition, co-occurrence patterns, and decomposition gene responses to 10 years of soil warming and nitrogen addition, alone and in combination. We specifically examined whether there were fungal community characteristics that could explain changes in soil carbon storage and organic matter chemistry in chronically warmed and fertilized soil. We …

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Intake Estimation Of Rams Under Grazing Condition In A Deferred Pastures Of Panicum Coloratum By Two Techniques, C. M. Ferri, M. A. Brizuela, N. P. Stritzler, H. J. Petruzzi Dec 2021

Intake Estimation Of Rams Under Grazing Condition In A Deferred Pastures Of Panicum Coloratum By Two Techniques, C. M. Ferri, M. A. Brizuela, N. P. Stritzler, H. J. Petruzzi

IGC Proceedings (1977-2023)

The goal of this study was to quantify the organic matter intake (OMI) of Pampinta rams grazing in a Panicum coloratum cv Verde differed pasture. The OMI was compared by two methods: a) the difference between the forage measured in pre and post-grazing condition, and b) the faecal production:digestibility ratio of the diet, estimated by total faecal gathering, and from the quantity of total faecal N in g per 100 g-1 of OMI and the concentration of total faecal N, respectively. The OMI estimated by difference between the forage measured in pre and post-grazing was 9 % higher (P …

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Estimation Of Organic Matter Digestibility And Intake From Faecal Organic Matter And Daily N Excretion And Concentration, C. M. Ferri, N. P. Stritzler, M. A. Brizuela Dec 2021

Estimation Of Organic Matter Digestibility And Intake From Faecal Organic Matter And Daily N Excretion And Concentration, C. M. Ferri, N. P. Stritzler, M. A. Brizuela

IGC Proceedings (1977-2023)

This study was performed with grazing sheep, to establish: a) if the amount of total faecal N (C; in g 100g-1 of organic matter intake (OMI)) remains constant at three feeding levels, in four utilisation periods of deferred Panicum coloratum cv. Verde; b) the relationship between C and faecal N fractions, and c) the relationship between faecal daily excretion of OM and N, and OMI. Intake increased (P< 0.01) with utilisation period, and was related (r = - 0.82; P< 0.01) to the protein content of food, the insoluble N fraction (r = -0.49; P< 0.01) and the soluble:insoluble N ratio (r = 0.41; P< 0.01) in faeces. No relation with total N concentration (r = -0.22; P> 0.05) or soluble N fraction (r = -0.02; P> 0.05) in faeces could be found. Daily excretion of OM and N were positively related (R2 = 0.93 and 0.96, respectively; …

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Effects Of Fertilization And Legume Introduction On The Forage Production Of Brachiaria Decumbens Pastures, M. R. Correa, Tsutomu Kanno, Manuel C. M. Macedo, J. D. G. Santos Junior, L. G. Beretta Dec 2021

Effects Of Fertilization And Legume Introduction On The Forage Production Of Brachiaria Decumbens Pastures, M. R. Correa, Tsutomu Kanno, Manuel C. M. Macedo, J. D. G. Santos Junior, L. G. Beretta

IGC Proceedings (1977-2023)

A grazing experiment was conducted to examine the effects of P and K fertilization and legume introduction on the forage production of Brachiaria decumbens (BD) pastures. Amount of biomass, dry matter production and forage quality were evaluated on BD pastures where three treatments were applied: without maintenance fertilizer (BD-N), with maintenance fertilizer (BD-F), and BD and Stylosanthes guianensis cv. Mineirao (SG) mixture with maintenance fertilizer (BD-FL). The fertilizer application increased an annual average of biomass and the contents of P and K in the leaves. On the other hand, the legume introduction had a positive influence on crude protein and …

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Effect Of Five Different Rest Periods On Tiller Regrowth Of Ryegrass, R. W. Coelho, W. R. Ocumpaugh Dec 2021

Effect Of Five Different Rest Periods On Tiller Regrowth Of Ryegrass, R. W. Coelho, W. R. Ocumpaugh

IGC Proceedings (1977-2023)

Five rest periods were imposed from April to May on a mixed pasture of two ryegrass (Lolium multiflorum Lam.) varieties and white clover (Trifolium repens L.). The rest period starting dates were: April 4, April 18, May 2, May 16, and May 30, for rest periods 1, 2, 3, 4, and 5, respectively. The total area allocated to the experiment was 1.1 ha, which was divided into 22 pastures. The experimental design used was a split-plot. Rest period was assigned to the main plot, grass to the subplot and legume to the subsubplot. The pastures were “mob-grazed” by …

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Aboveground Standing Crop Of An Ungrazed Elyonurus Muticus Grassland Under Annual Burning In The Pantanal, Brazil, E. L. Cardoso, S. M. A. Crispim, C. A. G. Rodrigues Dec 2021

Aboveground Standing Crop Of An Ungrazed Elyonurus Muticus Grassland Under Annual Burning In The Pantanal, Brazil, E. L. Cardoso, S. M. A. Crispim, C. A. G. Rodrigues

IGC Proceedings (1977-2023)

This study was conducted in the Pantanal of Mato Grosso do Sul state, Brazil, from September 1995 to July 1997. The objective was to evaluate the effect of annual burning on grasses and forbs biomass and standing dead in an ungrazed grassland of Elyonurus muticus. In two areas, one free of burning (control) and another area with annual burning, grasses, forbs aboveground biomass, and standing dead were collected. The experimental design was completely randomized with 10 replications. Burning modified the grasses and forbs biomass dynamics when compared to the area free of burning. After the first burning the grasses …

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Contract Grazing Of Young Beef Cattle On Ryegrass In The Southeastern Usa, David I. Bransby Dec 2021

Contract Grazing Of Young Beef Cattle On Ryegrass In The Southeastern Usa, David I. Bransby

IGC Proceedings (1977-2023)

The objective of this study was to evaluate contract grazing (in which the landowner grazes cattle owned by someone else for a specified fee) as an alternative to traditional ownership of the cattle, in order to improve profitability of grazing young beef cattle on annual ryegrass under limited availability of operating capital in the southeastern USA. Production data from a two-year grazing experiment were used as a basis for an economic analysis which assumed market prices for the beef industry in the region. Return/ha over animal and pasture costs was $312.20 for contract grazing, and $477.50 for purchased cattle. However, …

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Horses Grazing Management To Promote Distribution Of Lotus Tenuis (Waldst. Et Kit) In A Temperate Grassland, O. E. Ansín Dec 2021

Horses Grazing Management To Promote Distribution Of Lotus Tenuis (Waldst. Et Kit) In A Temperate Grassland, O. E. Ansín

IGC Proceedings (1977-2023)

In a temperate grassland of the Argentine Pampa, the birdsfoot trefoil (Lotus tenuis Waldst. et Kit) distribution was analyzed as a consequence of the grazing method used. In a plot of 40 ha occupied by native grassland an area of 16 ha was implanted with reed canary grass (Phalaris aquatica L.) and L. tenuis. This area was divided into two parts that contained the same pasture and native grassland surfaces, being grazed by horses. One, under continuous grazing and another one, under a controlled grazing. In the continuous grazing the whole year the animals had permanently access …

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Productivity Of Intensive Grazing Systems Based Upon Irrigated Pangola Pastures In The French West Indies, G. Alexandre, M. Mahieu, G. Aumont, M. Naves Dec 2021

Productivity Of Intensive Grazing Systems Based Upon Irrigated Pangola Pastures In The French West Indies, G. Alexandre, M. Mahieu, G. Aumont, M. Naves

IGC Proceedings (1977-2023)

This work deals with the comparison of the productivity of intensive grazing systems (IGS) in the French West Indies, used for meat production with cattle, goat and sheep. IGS are based upon the use of irrigated, fertilized, and high stocked (1.8 to 1.4 t live weight/ha/year) and rotational grazing Digitaria decumbens pastures. They lie upon good performance levels of local breeds, Creole cattle and Creole goats of Guadeloupe and Martinik ewes, and upon improved general husbandry. Both sheep and goat in IGS exhibit high levels of productivity. They reached up to 1000 kg LW of weaned offsprings and 1400 kg …

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Potential Of Crop Rotation Using Forages In The Tropics, P. L. Mafongoya Dec 2021

Potential Of Crop Rotation Using Forages In The Tropics, P. L. Mafongoya

IGC Proceedings (1977-2023)

Soil fertility is a fundamental biophysical root cause of food insecurity sub-Saharan Africa. Low quality crop residues and grasses during the dry season also limit animal productivity. Forage legumes (herbaceous and tree legumes) have great potential to increase crop animal productivity. Technologies have been developed over the past 3 decades to fully integrate forage legumes into farming. Most of these technologies are still on shelves with low adoption by farmers. Rhe role of forage legumes in nutrient cycling is reviewed in this paper. The factor limiting adoption will also be discussed. Innovative dissemination pathways to increase adoption will be suggested.

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The Role Of Forages In Sustainable Cropping Systems Of Southern Australia, William D. Bellotti Dec 2021

The Role Of Forages In Sustainable Cropping Systems Of Southern Australia, William D. Bellotti

IGC Proceedings (1977-2023)

The historical context, recent trends, and possible future role of forages in cropping systems are reviewed. Three recent themes will be developed: 1) The successful exploitation of genetic diversity resulting in commercial development of new legume species as pasture cultivars with specific traits better suited to the needs of current farming systems. 2) Improved understanding of key soil processes under grazed pastures, particularly soil water and soil nitrogen, and how these processes impact on indicators of sustainability like deep drainage and nitrate leaching. 3) An emerging capacity for predicting the effect of pasture-crop sequences on soil processes, crop growth and …

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Performance Of Millet Cultivars In Succession To Field Crop Of Beans In Southern Portion Of State Of Minas Gerais - Brazil, José C. Pinto, M. C. Maia, A. R. Evangelista, I. F. De Andrade, Joel Augusto Muniz, I. P. A. Dos Santos, E. R. P. Bomfim Dec 2021

Performance Of Millet Cultivars In Succession To Field Crop Of Beans In Southern Portion Of State Of Minas Gerais - Brazil, José C. Pinto, M. C. Maia, A. R. Evangelista, I. F. De Andrade, Joel Augusto Muniz, I. P. A. Dos Santos, E. R. P. Bomfim

IGC Proceedings (1977-2023)

This trial was carried out at the Department of Animal Science - Universidade Federal de Lavras (UFLA), from February to June, 1997. It was evaluated the performance of three millet [Pennisetum glaucum (L.) R. Br.] cultivars, as a second crop (Common, BN 2 and CMS 02) and four sowing dates (02/22, 03/14, 04/03 and 04/23). The three millet cultivars were sown after a cropping of beans (Phaseolus vulgaris L.) by the end of the rainy season, with no additional fertilization. It was used the randomized block design in a split-plot scheme, allocating the sowing dates on the main …

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Forage Yield And Nutritive Value Of Spring Oats For Various Cultivars And Planting Dates At The Middle Mountain Area, S. Seo, W. H. Kim, D. E. Shin, G. J. Choi, G. J. Park Dec 2021

Forage Yield And Nutritive Value Of Spring Oats For Various Cultivars And Planting Dates At The Middle Mountain Area, S. Seo, W. H. Kim, D. E. Shin, G. J. Choi, G. J. Park

IGC Proceedings (1977-2023)

The experiment was carried out to determine the optimum cultivars and effects of planting date on growth, forage yield and nutritive value of spring sown oats (Avena sativa L.) at the middle mountainous area, Namwon, NLRI, Korea, 1998. The cultivars used in this study was Cayuse, Swan, Foothill, Cashel, Martlock and Winjardie, and the planting dates were 9, 14, 19, 24 and 29 March, and all the forages were harvested on 9 June. Swan among spring oats was the earliest heading type (21 May), and then Martlock (25 May), Winjardie (27 May), and Foothill was the latest (14 June). …

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