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Articles 7501 - 7530 of 294633

Full-Text Articles in Physical Sciences and Mathematics

Effect Of Plant Population And Phosphorus Fertilizer Application On Dry Matter And Seed Yield Of Two Lablab (Lablab Purpureus) Varieties In Botswana, K. C. Kawonga, F. P. Wandera, S. Mangope, P. Mutshewa, B. M. Lefofe Jun 2023

Effect Of Plant Population And Phosphorus Fertilizer Application On Dry Matter And Seed Yield Of Two Lablab (Lablab Purpureus) Varieties In Botswana, K. C. Kawonga, F. P. Wandera, S. Mangope, P. Mutshewa, B. M. Lefofe

IGC Proceedings (1997-2023)

Lablab has high potential as a protein source to grazing livestock especially during the dry season in arid Botswana. It produced 8.5t dry matter (DM)/ha and had 14% crude protein with 60% digestibility (APRU, 1988; Aganga, 2003). Lack of agronomic data on lablab production was probably the reason why some farmers in Botswana got yields as low as 300 kg/ha (APRU, 1987). Therefore, a trial of two lablab varieties was conducted to determine the effect of plant population and phosphorus (P) on DM yield.

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Forage Yield And Structural Traits Of Tanzaniagrass (Panicum Maximum) At Four Canopy Heights, Carlos A. M. Gomide, Ana C. Ruggieri, R. A. Reis, J. A. Gomide, J. H. De A. Rangel, E. O. Almeida Jun 2023

Forage Yield And Structural Traits Of Tanzaniagrass (Panicum Maximum) At Four Canopy Heights, Carlos A. M. Gomide, Ana C. Ruggieri, R. A. Reis, J. A. Gomide, J. H. De A. Rangel, E. O. Almeida

IGC Proceedings (1997-2023)

Pasture forage production is based on the growth of tillers (Hodgson, 1990). Although the effect of canopy height and structural traits on productivity of temperate grasses are well known e.g. (Bircham & Hodgson,1983; Binnie & Chestnut, 1994) tiller studies on tropical pasture species are scarce.

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Forage Yield In Two Tropical Grasses At Different Cutting Intervals And N Levels, Enrique Cortés Díaz, H. Diaz-Solis, A. Saldívar-Fitzmaurice, W. Grant, A. Martínez-Garza, A. Martínez-Hernandez Jun 2023

Forage Yield In Two Tropical Grasses At Different Cutting Intervals And N Levels, Enrique Cortés Díaz, H. Diaz-Solis, A. Saldívar-Fitzmaurice, W. Grant, A. Martínez-Garza, A. Martínez-Hernandez

IGC Proceedings (1997-2023)

Cutting interval and N level determine forage yield in grasses (Whitehead, 1995). Coastcross-1 (Cynodon dactylon and Tifton 68 (Cynodon spp) are tropical grasses of high forage yield potential (Burton, 1972; Burton et al., 1993).

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Root Systems In Tropical Pasture Restoration Treatments In Rondônia, Brazil, M. C. Piccolo, K. C. Augusti, C. Neill, L. Fante Junior, M. Bernoux, C. C. Cerri Jun 2023

Root Systems In Tropical Pasture Restoration Treatments In Rondônia, Brazil, M. C. Piccolo, K. C. Augusti, C. Neill, L. Fante Junior, M. Bernoux, C. C. Cerri

IGC Proceedings (1997-2023)

Soil management can influence physical and chemical soil properties, with fundamental differences in root system development. Our objectives were to quantify carbon (C) and nitrogen (N) concentrations, dry mass and length of roots subjected to different restoration treatments of degraded pasture.

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Economic Methodology For Pasture Grass And Legume Seed Production, D. M. Cino, G. Febles, M. F. Díaz, F. Funes Jun 2023

Economic Methodology For Pasture Grass And Legume Seed Production, D. M. Cino, G. Febles, M. F. Díaz, F. Funes

IGC Proceedings (1997-2023)

The importance and complexity of the industrial process of seed production is known. Thus, conditions should be established for achieving and efficiently controlling the activity in order to know production costs, selling prices and to guarantee economic efficiency. The objective of this paper was to evaluate from an economic point of view, seed production of species of tropical grasses and legumes based on a preliminary methodology facilitating the control of the whole activity.

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Integration Of Forage Production In Rice-Based Cropping Systems For Mitigating Forage Crisis Of Ruminant Livestock - Studies In Bangladesh, M. A. Akbar, M. S. U. Bhuiyan, M. S. Islam Jun 2023

Integration Of Forage Production In Rice-Based Cropping Systems For Mitigating Forage Crisis Of Ruminant Livestock - Studies In Bangladesh, M. A. Akbar, M. S. U. Bhuiyan, M. S. Islam

IGC Proceedings (1997-2023)

Intensive rice cropping in Bangladesh is causing alarming shortages of forage and low ruminant productivity. This is also causing degeneration of soil fertility. Therefore it is imperative to identify some approach to integrate fodder production into rice cropping systems on rural farms. The integration of legume forage may improve soil fertility and soil structure, thus enhancing crop yield and may provide high quality feed for livestock (Haque 1992). Studies were done to investigate the effects of rice/forage integration on forage yield, soil fertility and also on milk yield of cows fed on the grown forages.

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Evaluating The Economic And Environmental Sustainability Of Integrated Farming Systems, C. A. Rotz, M. A. Sanderson, M. Wachendorf, F. Taube Jun 2023

Evaluating The Economic And Environmental Sustainability Of Integrated Farming Systems, C. A. Rotz, M. A. Sanderson, M. Wachendorf, F. Taube

IGC Proceedings (1997-2023)

Economic and environmental sustainability has become a major concern for forage-based animal production in Europe, North America and other parts of the world. Development of more sustainable farming systems requires an assimilation of experimental and modelling research. Field research is critical for supporting the development and evaluation of models, and modelling is needed to integrate farm components for predicting the long-term effects and interactions resulting from farm management changes. Experimentally supported simulation provides a tool for evaluating and comparing farming strategies and predicting their effect on the watershed, region and beyond.

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Simulation Of Pasture Phase Options For Mixed Livestock And Cropping Enterprises, L. Salmon, A. D. Moore, J. F. Angus Jun 2023

Simulation Of Pasture Phase Options For Mixed Livestock And Cropping Enterprises, L. Salmon, A. D. Moore, J. F. Angus

IGC Proceedings (1997-2023)

In southern Australia, 50% of grain-producing farms also run beef and/or sheep enterprises. Legume pasture leys are used to replace soil nitrogen and manage crop disease risks. Deep-rooted perennials, predominantly lucerne (Medicago sativa), are replacing annual Trifolium subterraneum-based leys to increase pasture production. They also have the environmental benefits of limiting soil acidity, rising water tables and dryland salinity. After recent droughts depletion of soil water by lucerne has penalised wheat yields. Decision support tools can help farmers evaluate the long-term effects of grazed annual and perennial leys on animal and crop production at the whole farm …

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Overseeding Cereal Rye And Annual Ryegrass Into Soyabean For Forage As Part Of A Multifunctional Cropping System, L. B. Smith, R. L. Kallenbach Jun 2023

Overseeding Cereal Rye And Annual Ryegrass Into Soyabean For Forage As Part Of A Multifunctional Cropping System, L. B. Smith, R. L. Kallenbach

IGC Proceedings (1997-2023)

In the lower Midwest, the longest period of inadequate forage supply from pasture is from mid- December through mid-March (Matches & Burns, 1995). Livestock producers in this region are looking for high quality forage for winter grazing (Kallenbach et al., 2003). Annual ryegrass (Lolium multiflorum Lam.) and cereal rye (Secale cereale L.) are two forages that Missouri's beef producers are interested in to extend the grazing season. The objective of this research was to determine how seeding date impacts the establishment, growth, and forage production of annual ryegrass and cereal rye when planted into soyabean fields …

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Previous Grass-Lucerne Mixtures Affect Barley Yield And Quality In A Semiarid Location Of The Canadian Prairie Region, P. G. Jefferson, F. Selles, R. P. Zentner, R. Lemke Jun 2023

Previous Grass-Lucerne Mixtures Affect Barley Yield And Quality In A Semiarid Location Of The Canadian Prairie Region, P. G. Jefferson, F. Selles, R. P. Zentner, R. Lemke

IGC Proceedings (1997-2023)

In the semiarid region of the Canadian prairies perennial forages are not rotated with annual crops because previous experiments reported negative impacts (Kilcher and Anderson 1963; Campbell et al. 1990). However, previous research used persistent species while short-lived species could have less adverse effect. Our objective was to compare three grass species in three lucerne mixtures terminated with tillage or herbicide for effects on barley grain, N concentration, and N uptake.

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Canavalia Brasiliensis: A Multipurpose Legume For The Sub-Humid Tropics, A. Schmidt, M. Peters, A. Franco, R. Schultze-Kraft Jun 2023

Canavalia Brasiliensis: A Multipurpose Legume For The Sub-Humid Tropics, A. Schmidt, M. Peters, A. Franco, R. Schultze-Kraft

IGC Proceedings (1997-2023)

Canavalia brasiliensis Mart. ex Benth. ("Brazilian jackbean") is a weakly perennial, prostrate to twining herbaceous legume with a wide natural distribution in the New World tropics and subtropics. In comparison with C. ensiformis ("jackbean"), research reports on C. brasiliensis are scattered and restricted to studies done in Latin America. The species develops a dense and extensive, deep-reaching root system and subsequently tolerates a 5-6 month dry period. Based on studies that generally were done with only one genotype, it is adapted to a wide range of soils, including very acid, low-fertility soils. Its main use is as green manure, for …

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Relative Forage Yield Of Intercropped Lucerne (Medicago Sativa L.) And Winter Forage Cereals, T. Pereyra, H. Pagliaricci, A. Ohanian Jun 2023

Relative Forage Yield Of Intercropped Lucerne (Medicago Sativa L.) And Winter Forage Cereals, T. Pereyra, H. Pagliaricci, A. Ohanian

IGC Proceedings (1997-2023)

In tropical regions of the world intercropping is mainly associated with the production of maize for grain, while in temperate areas it is associated with the efficient production of forage. There is increasing interest in the development of cereal - legume intercropping in some temperate regions (reviewed by Mason & Pritchard, 1987). The aim of this study was to compare the relative forage yield of intercropped lucerne and cereal.

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The Effectiveness Of Nitrogen Rates On Winter Wheat And White Clover Bi-Cropping Grown For Silage, J. Sowiński Jun 2023

The Effectiveness Of Nitrogen Rates On Winter Wheat And White Clover Bi-Cropping Grown For Silage, J. Sowiński

IGC Proceedings (1997-2023)

Whole-crop cereals harvested for silage cover c. 500,000 ha in Europe (Wilkins & Kirilov, 2003). Generally dry matter (DM) yield of small-grain cereals is lower than that of maize. In some investigations, DM yield (of high nutritional value) reached 15 t/ha (Balsdon et al. 1997; Clements et al. 1997). Whole-crop silage produced in a bi-cropping system offers more balanced forage compared to pure cereals and legumes. Nitrogen rates can be decreased with bi-cropping. The aim of this investigation was to compare nitrogen effectiveness using two methods of winter wheat cultivation: direct drilling into stubble and bi-cropping with …

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The Influence Of Winter Wheat And White Clover Bi-Cropping System On White Clover Sward Parameters, J. Sowiński Jun 2023

The Influence Of Winter Wheat And White Clover Bi-Cropping System On White Clover Sward Parameters, J. Sowiński

IGC Proceedings (1997-2023)

Whole-crop silage produced in a bi-cropping system represents a low-input forage production system (Clements et al., 1997). Depressing competition of white clover (by mowing or spraying with herbicides) when winter wheat starts its growth is necessary in this system. Winter wheat also competes with white clover during crop growth. The number of growing points as well as the length and weight of stolon are the main parameters that characterise the persistence of white clover (Jorgensen & Ledgard, 1997; Marriott & Haystead 1990). The purpose of the present investigation was to study the effects of a bi-cropping system on some …

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Options For Improved Biomass Production In Feeding Systems For Dairying In High Rainfall Environments In New Zealand, John M. De Ruiter, D. R. Wilson, S. Maley, S. M. Henton Jun 2023

Options For Improved Biomass Production In Feeding Systems For Dairying In High Rainfall Environments In New Zealand, John M. De Ruiter, D. R. Wilson, S. Maley, S. M. Henton

IGC Proceedings (1997-2023)

New Zealand dairy production has expanded into marginal climates and soil types on the premise of excellent profitability and efficient utilisation of forage. Annual pasture production in the cool West Coast of the South Island (rainfall 2042-2933 mm) is15,000 kg. Increased farm production and feeding of high quality biomass, from imported feed or supplementary feed crops grown on- farm, are needed to improve milk solid output. Small plot trials with spring and early summer-sown brassicas, cereals and maize were the focus for development of systems to maximise and manage the seasonal feed supply. The effect of sowing time, fertiliser timing …

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Implications Of The Use Of Grazing Sheep On Kiwi Fruit Orchard, C. H. E. C. Poli, R. C. Gomes, P. Cinel Filho, M. F. Gomes, A. Zborowki, G. Pires, J. L. Rigon Jun 2023

Implications Of The Use Of Grazing Sheep On Kiwi Fruit Orchard, C. H. E. C. Poli, R. C. Gomes, P. Cinel Filho, M. F. Gomes, A. Zborowki, G. Pires, J. L. Rigon

IGC Proceedings (1997-2023)

In the southern part of Brazil there is an important area of kiwi fruit, mainly cultivated by small farmers. The use of sheep under trees of kiwi fruits could be an interesting alternative for small farmers to reduce their mowing costs, to improve their income and to provide meat for the farmers' family. However there is a lack of information about the damage that the animals could cause to kiwi fruit plants. The objective of this study was to monitor the effect of the use of sheep on a kiwi fruit orchard.

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The Effect Of Cutting Regime And Cultivar On Longevity Of Pure Lucerne Stands In Latvia, Z. Gaile Jun 2023

The Effect Of Cutting Regime And Cultivar On Longevity Of Pure Lucerne Stands In Latvia, Z. Gaile

IGC Proceedings (1997-2023)

Lucerne growing is important for high and excellent quality yields of hay or silage without application of N fertilisers, as well as for increasing crop diversity in crop rotation systems. It is comparatively expensive to establish lucerne stands in Latvia. Different aspects can affect longevity of lucerne stands: suitability of cultivar to specific conditions, soil characteristics, different stress conditions and cutting management, including frequency and height of cutting, and critical rest period in autumn (Sheaffer et al., 1988). The aim of our study was to evaluate the persistence of lucerne stands without renovation while obtaining reasonable yields.

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The Input Of Forage Legumes In Sustainable Grassland Systems, Žydrė Kadžiulienė, L. Sarunaite Jun 2023

The Input Of Forage Legumes In Sustainable Grassland Systems, Žydrė Kadžiulienė, L. Sarunaite

IGC Proceedings (1997-2023)

There is increased interest in sustainable grassland systems. One step towards sustainability is expansion of legume use, because of their potential to fix and transfer nitrogen (N) to subsequent crops. However, legumes can also have negative aspects, such as difficulties in establishment (Porqueddu et al., 2003), lack of persistence, N loss (Scholefield et al., 2002) and accumulation of soil borne disease agents (Kadziulis, 2001). The large variability within legume swards and between years in pastures and leys has encouraged us to search for possibilities to achieve stability of their inputs in sustainable grassland systems.

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The Interaction Of Management With Botanical Composition Of Irrigated Grass-Legume Pasture Mixtures In The Intermountain West Usa, J. W. Macadam, T. C. Griggs, G. J. Mileski Jun 2023

The Interaction Of Management With Botanical Composition Of Irrigated Grass-Legume Pasture Mixtures In The Intermountain West Usa, J. W. Macadam, T. C. Griggs, G. J. Mileski

IGC Proceedings (1997-2023)

Beef produced on semi-arid range and milk produced in confinement are the main agricultural commodities in the semi-arid western USA. The studies reported here were undertaken to determine the suitability of irrigated pasture as an alternative to traditional beef and dairy production systems. The clipping and grazing studies were not run concurrently or within the same field, but were successive steps in selecting mixtures best-suited for rotational stocking of irrigated pastures in the Intermountain West. Summaries of productivity data have been reported elsewhere (MacAdam, 2002; MacAdam et al., 2004).

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Use Of Novel Spatial Presentations Of Plant Species To Improve Legume Abundance, J. M. Sharp, M. J. Jeger, R. W. Fraser, G. R. Edwards Jun 2023

Use Of Novel Spatial Presentations Of Plant Species To Improve Legume Abundance, J. M. Sharp, M. J. Jeger, R. W. Fraser, G. R. Edwards

IGC Proceedings (1997-2023)

The benefits of using white clover (Trifolium repens) in pasture grazed by sheep have been widely recognised. However, clover is considered inadequate and risky as the main source of nitrogen input, since its abundance in the pasture is patchy, low (typically less than 20%) and shows great year-to-year variation. This is thought to be due to the costs of nitrogen fixation, competition with grass, the preference for clover by sheep and patchy dung and urine deposition (Schwinning & Parsons, 1996). One possible solution may be the spatial separation of clover from grass, which would remove inter-specific competition, allowing clover to …

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Italian Ryegrass And Barley Mixture For Forage Production: Effect Of Harvesting Time On Yield And Quality In Northern Latitudes, Oiva Nissinen, O. Niemeläinen, M. Kontturi Jun 2023

Italian Ryegrass And Barley Mixture For Forage Production: Effect Of Harvesting Time On Yield And Quality In Northern Latitudes, Oiva Nissinen, O. Niemeläinen, M. Kontturi

IGC Proceedings (1997-2023)

In northern latitudes forage cereal and Italian ryegrass (IRG) mixtures provide a good source of forage in situations where perennial swards have suffered winter damages (Nissinen, 1994). In this experiment harvesting time of the first cut of an IRG-barley mixture was studied to optimise the yield and quality in the growing season. The objective of the study was to assess if harvesting an IRG-barley mixture later than two weeks after heading, as currently recommended, offers benefits.

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Italian Ryegrass And Whole Crop Cereal Mixture: Effect Of Sowing Rate And Maturity On Variety On Yield And Botanical Composition In Northern Latitudes, O. Niemeläinen, Oiva Nissinen, M. Kontturi Jun 2023

Italian Ryegrass And Whole Crop Cereal Mixture: Effect Of Sowing Rate And Maturity On Variety On Yield And Botanical Composition In Northern Latitudes, O. Niemeläinen, Oiva Nissinen, M. Kontturi

IGC Proceedings (1997-2023)

The profitability of a dairy farm using whole crop cereals (WCC) is better in Finland than that of a farm producing combine harvested cereals and grass silage (Turunen, 2000). The main reason for that is the decrease in the machinery costs. However, quality of the WCC yield can vary considerably depending on the ear- straw ration. This may lead to problems in feeding. In this experiment we studied the effect of sowing rate and growing time of the cereal cultivar on the botanical composition, quality and yield of the WCC harvest. The objective was to study if it would be …

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The Effect Of Defoliation Interval On Regrowth Of Tall Fescue, K. A. Adamczewski, Danny J. Donaghy Jun 2023

The Effect Of Defoliation Interval On Regrowth Of Tall Fescue, K. A. Adamczewski, Danny J. Donaghy

IGC Proceedings (1997-2023)

Herbage yield, persistence and quality optimise when defoliation interval is based on physiological indicators, such as leaf regrowth stage. Examples include ryegrass (Fulkerson & Donaghy, 2001), cocksfoot (Rawnsley et al., 2002), prairie grass (Fulkerson et al., 2000) and kikuyu (Reeves et al., 1996). Yield, persistence and quality optimise because leaf regrowth stage relates closely to plant energy reserves, which generally peak as the number of live leaves/tiller maximise. More frequent defoliation than the optimum reduces energy reserves and leads to a smaller root system, fewer tillers and retarded growth rate (Fulkerson & Donaghy, 2001). Based on plant …

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Yield And Nutritive Value Of Heading And Headless Sorghum X Sudangrass Hybrids In Response To Cutting Frequency, J. K. Lee, H. S. Park, Y. C. Lim, S. Seo, B. H. Paek, J. H. Fike Jun 2023

Yield And Nutritive Value Of Heading And Headless Sorghum X Sudangrass Hybrids In Response To Cutting Frequency, J. K. Lee, H. S. Park, Y. C. Lim, S. Seo, B. H. Paek, J. H. Fike

IGC Proceedings (1997-2023)

Summer annual forages contribute greatly toward solving the problem of roughage supply for cattle in Korea. These forages support high levels of dairy and beef production during hot summer months when the quality and production of perennial herbage decreases due to unfavourable climatic conditions (Olson, 1971). This study investigated the effects of cutting frequency on dry matter (DM) yield and nutritive value of heading versus headless varieties of sorghum x sudangrass hybrid.

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Selection Of Forages For The Tropics (Soft) - A Database And Selection Tool For Identifying Forages Adapted To Local Conditions In The Tropics And Subtropics, B. C. Pengelly, B. G. Cook, I. J. Partridge, D. A. Eagles, M. Peters, J. Hanson, S. D. Brown, J. L. Donnelly, B. F. Mullen, R. Schultze-Kraft, A. Franco, R. O'Brien Jun 2023

Selection Of Forages For The Tropics (Soft) - A Database And Selection Tool For Identifying Forages Adapted To Local Conditions In The Tropics And Subtropics, B. C. Pengelly, B. G. Cook, I. J. Partridge, D. A. Eagles, M. Peters, J. Hanson, S. D. Brown, J. L. Donnelly, B. F. Mullen, R. Schultze-Kraft, A. Franco, R. O'Brien

IGC Proceedings (1997-2023)

Rising populations and incomes in developing countries are likely to double demand for livestock products by 2020 (Delgado et al. 1999). This strong demand has potential to improve profitability for farmers but will require improved animal feeding in both semi-intensive crop-livestock and more extensive livestock systems. Forages usually are the most cost-effective option to supply feed demands, particularly for ruminant-, but also for pig- and poultry- production. It is critical to select the most suitable forages for the local system and conditions. Small- and even larger-scale farmers depend heavily on advice from extension and development agencies, and from seed …

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Response Of Arachis Pintoi To Grazing Intensity When Associated With Different Grasses, C. M. S. De Andrade, R. Garcia, Judson F. Valentim, O. G. Pereira Jun 2023

Response Of Arachis Pintoi To Grazing Intensity When Associated With Different Grasses, C. M. S. De Andrade, R. Garcia, Judson F. Valentim, O. G. Pereira

IGC Proceedings (1997-2023)

Lack of legume persistence is one of the main reasons for poor utilisation of grass-legume pastures in the tropics. Arachis pintoi (forage peanut) is currently the most promising forage legume for the humid tropics, mainly because of good persistence under grazing (Grof, 1985; Fisher & Cruz, 1995). The objective of this work was to show how two accessions of A. pintoi react to increasing herbage allowance levels when associated with two different grasses.

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Performance Of Dual-Purpose Cows On A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, J. Jarillo-Rodríguez, E. Ocaña-Zavaleta, B. Marín-Mejía, L. 'T Mannetje, A. Aluja-Schunemann Jun 2023

Performance Of Dual-Purpose Cows On A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, J. Jarillo-Rodríguez, E. Ocaña-Zavaleta, B. Marín-Mejía, L. 'T Mannetje, A. Aluja-Schunemann

IGC Proceedings (1997-2023)

Native grasslands (NG) are the main feed supply of dual-purpose (DP) cows of the Mexican humid tropics. NG comprise about 85% of Paspalum, Axonopus and Cynodon species, about 5% of native legumes, mainly of Desmodium, and the remaining 10% are narrow and broad leafed weeds. Arachis pintoi (AP) is a persistent grazing tolerant tropical legume. In association with sown grasses, it has improved dry matter (DM) yield, nutritive quality of forage, and milk yield up to 9 kg/cow/day (González et al., 1996). The objective was to determine if productive performance of DP cows could be improved by …

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Production And Persistence Of A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, L. 'T Mannetje, A. Aluja-Schunemann Jun 2023

Production And Persistence Of A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, L. 'T Mannetje, A. Aluja-Schunemann

IGC Proceedings (1997-2023)

Arachis pintoi (Ap) is a highly persistent legume. This study aimed at: (i) determining if introducing Ap CIAT 17434 into a NG pasture affected its standing dry matter (SDM) and botanical composition (BC, %) and (ii) verifying if Ap would be as persistent as it is with introduced grasses (IG).

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Variation Within The Species Macroptilium Atropurpureum Regarding Adaptation To Grazing, Cam K. Mcdonald, R. J. Clements Jun 2023

Variation Within The Species Macroptilium Atropurpureum Regarding Adaptation To Grazing, Cam K. Mcdonald, R. J. Clements

IGC Proceedings (1997-2023)

The twining legume Macroptilium atropurpureum cv. Siratro was released around 1960 (Hutton 1962) and the rust resistant cultivar Aztec was released in 1994 (Bray & Woodroffe 1995). The species showed great potential for pastures in northern Australia and was planted over some 220 Kha in the 1960's and 70's. The species was high yielding and readily eaten by cattle. However, by the early 1980's the species had declined dramatically in grazed pastures. Clements (1989) showed that a major problem with Siratro was the frequency of removal of growing points. This leads to less regrowth after grazing, less seed set and …

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Experiences With Establishing Legumes As Part Of A Ley Pasture In A Low-Input Farming System Of The Eastern Amazon, Brazil, S. Hohnwald, B. Rischkowsky, A. P. Camarão, J. A. Rodrigues-Filho, R. Schultze-Kraft, J. M. King Jun 2023

Experiences With Establishing Legumes As Part Of A Ley Pasture In A Low-Input Farming System Of The Eastern Amazon, Brazil, S. Hohnwald, B. Rischkowsky, A. P. Camarão, J. A. Rodrigues-Filho, R. Schultze-Kraft, J. M. King

IGC Proceedings (1997-2023)

In the Eastern Amazon extensive pasture management by smallholders can result in degradation of grassland, leading to unproductive and abandoned agricultural areas (Dias-Filho, 2003). To avoid long and costly restoration of those areas, ley-systems with alternating cropping and pasture phases might offer a promising solution. The inclusion of N-fixing legumes is seen as a suitable method to improve soil fertility during the pasture phase. As mono-cultures seem not to be appropriate, given the phytodiverse climax vegetation in the humid tropics, a combination of various shrub and herbaceous legume species is proposed. Thus, this paper tests a grass-legume mixture to replace …

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