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Articles 1921 - 1950 of 11583
Full-Text Articles in Plant Pathology
Forage Production From In Situ Herbicide Treatment Of Semi-Arid Woodlands And Scrub Regrowth, A R. Murphy, C O. Love, G W. Fossett
Forage Production From In Situ Herbicide Treatment Of Semi-Arid Woodlands And Scrub Regrowth, A R. Murphy, C O. Love, G W. Fossett
IGC Proceedings (1977-2023)
The response of native pastures after stem injection of eucalypt woodlands with picloram-triclopyr herbicide in 1986 was Investigated at 2 locations in Queensland over 18 months, Treatments were fenced to exclude half the plots from grazing by cattle. At Rolleston (good rainfall) dry matter grass response from grazed and ungrazed plots was 2- to 3-fold more than in untreated plots 4-18 months after treatment. At Mundubbera (low rainfall) picloram-triclopyr gave 2- to 5-fold increases in grass dry matter 3-18 months in ungrazed plots and 3-9 months in grazed plots. At both sites plclorarn-triclopyr gave quicker nnd greater grass response than …
Evaluation Of Animal Productivity And Pasture Yield After Treatment Of Brigalow (Acacia Harpopylla) Regrowth With Tebuthiuron, G W. Fossett, P C. Venamore
Evaluation Of Animal Productivity And Pasture Yield After Treatment Of Brigalow (Acacia Harpopylla) Regrowth With Tebuthiuron, G W. Fossett, P C. Venamore
IGC Proceedings (1977-2023)
Brigalow (Acacia harpophylla) regrowth was aerially treated with 2.0 kg/ha tebuthiuron (Graslan TM) at Blackwater, Australia in November 1989. Control of brigalow regrowth increased in grass production 2- fold, which resulted in dramatic animal live-weight gains. The liveweight advantage of steers grazing the tebuthiuron treated area was 31 kg/head compared with similar steers grazing the control paddock at similar stocking rates. After 20 months this advantage enabled 44% of stock to be marketed at premlum prices. A subset of steers implanted with a long-term hormonal growth promotant (HGP) (Compudose400™) and grazing the tebuthiuron-treated paddock recorded a 75 kg …
Competitive Effects Of Trees On Pasture Are A Function Of Rainfall Distribution And Soil Depth, J C. Scanlan, G M. Mckeon
Competitive Effects Of Trees On Pasture Are A Function Of Rainfall Distribution And Soil Depth, J C. Scanlan, G M. Mckeon
IGC Proceedings (1977-2023)
A pasture production model was modified to account for the effect of tree water use on pasture production in woodlands of norJhern Australia. Simulation experiments with the model indicate that competition for water explains the effect of trees on pasture production. Trees compete for water most strongly (I) in shallow soils; (2) when tree roots are shallow; and (3) when intra-seasonal dry periods reduce the amount of water available for transpiration.
Deforestation In The Savanna Context: Problems And Benefits For Pastoralism, W H. Burrows
Deforestation In The Savanna Context: Problems And Benefits For Pastoralism, W H. Burrows
IGC Proceedings (1977-2023)
Deforestation is discussed from a savanna perspective, rather than in the usual rain forest connotation. Reasons for removing trees and shrubs from savannas are outlined with emphasis placed on the impacts that tree clearing has on livestock production. Other benefits and possible adverse consequences of removing woody plants are detailed. It is suggested that the importance of trees ln maintafning nutrient flows in grazed savanna may be overstated. Problems that arise from clearing trees from savannas often result from a lack of preclearing planning or post-clearing management, rather than the clearing operation Itself.
Deforestation For Pasture In The Humid Tropics: Is It Economically And Environmentally Sound In The Long Term?, E Adilson Serrao, C Uhl, D C. Nepstad
Deforestation For Pasture In The Humid Tropics: Is It Economically And Environmentally Sound In The Long Term?, E Adilson Serrao, C Uhl, D C. Nepstad
IGC Proceedings (1977-2023)
During the past 5 decades, the rate of tropical forest conversion has accelerated in response to economic pressures, population growth, technological development, and prpgrammes and incentives to open land for development. Deforestation rates rose substantially through the I 980s, and were highest in Africa ( 1.7% ), followed by Asia (1.4%) and Latin America (0.9%). The greatest extent of deforestation, however, was In Latin America, especially in the Amazon, where much of the deforestation was for pasture-based cattle development. Although forest conversion for ranching has been routinely criticised because of the ecological and socioeconomic implications associated with it, cattle herds …
A Legume Ley System In Australia's Semi-Arid Tropics, R L. Mccown, K Thiagalingam, T Price, P S. Carberry, R K. Jones, N P. Dagliesh, D.C I. Peake
A Legume Ley System In Australia's Semi-Arid Tropics, R L. Mccown, K Thiagalingam, T Price, P S. Carberry, R K. Jones, N P. Dagliesh, D.C I. Peake
IGC Proceedings (1977-2023)
A large part of the Australian continent is semi-arid and tropical. While extensive beef cattle grazing is the most significant agricultural industry in this region, there Is some potential for dryland cropping. There are strong economic and- ecological reasons for exploring the possibility of a no-till tropical ley system. Work at Katherine, Northern Territory, found that a ley system based on Stylosanthes hamata cv. Verano showed considerable promise based on both contributions to dry-season animal performance and nitrogen contribution to succeeding coarse grain crops. Subsequent research and development in the wetter Douglas-Daly district of the Northern Territory has demonstrated even …
Hardseededness Of Medicago Polymorpha Under Field Conditions In The Subhumid Mediterranean Zone Of Chile, Julia R. Avendano, Alejandro L. Del Pozo, Carlos M. Ovalle
Hardseededness Of Medicago Polymorpha Under Field Conditions In The Subhumid Mediterranean Zone Of Chile, Julia R. Avendano, Alejandro L. Del Pozo, Carlos M. Ovalle
IGC Proceedings (1977-2023)
To improve knowledge in the establishment and self-regeneration of medics grown in rotation with wheat in Chile, the long-term ambiental softening of medic seed is being studied. In March, (i) 72 samples of 100 pods each, were broadcast on the soil surface In plots of 20x20 cm, surrounded by a wood frame, and (ii) 12 samples were placed in a similar way, but the pods were buried at 1-2 ·cm. /11 sitr,, or field germination was recorded, and the germinated seeds destroyed. In (i), every 2 months during the first to fourlh softening season (SS), and in (ii), each March …
Role Of Gramineous Species In Cereal-Annual Legume Farming Systems, G N. Roberts, P G. Tow, E D. Carter
Role Of Gramineous Species In Cereal-Annual Legume Farming Systems, G N. Roberts, P G. Tow, E D. Carter
IGC Proceedings (1977-2023)
Three pasture types (volunteer annual grass+medic, grass-free medic and oat+volunteer grass+medic) were compared at 2 stocking rates (8.4 and 12.6 DSE) with grazing Merino wethers. The oat variety is resistnnt to both Gaeumannomyces graminis (take-all) and Heterodem avenae (cereal cyst nematode), important root diseases of cereals. Four harvests were taken during early winter. The oat + grass + medic pasture type had a faster growth rate and maintained higher levels of available pasture on all sampling occasions (July to September). The yields of the grass and medic components were significantly reduced in the oat+grass+medic treatment from the second harvest onwards. …
Digitaria Milanjiana Ley Pasture For Banana Cropping In Tropical North Queensland, Australia, T J. Hall, G D. Walduck, R W. Walker
Digitaria Milanjiana Ley Pasture For Banana Cropping In Tropical North Queensland, Australia, T J. Hall, G D. Walduck, R W. Walker
IGC Proceedings (1977-2023)
The burrowing nematode (Radopholus similis) is a major economic pest of bananas in the wc;t tropics of Queensland. It is expensive to control, reduces banana yields and can reduce the economic life of a crop. Current pasture grasses cannot be used in leys because they are hosts to the nematode. Introduced pasture grasses (143 accessions) were evaluated for their environmental adaptation, burrowing nematode resistance, and weed control and erosion protection ability. Digitaria milanjiana CPI 59745 was the most successful accession and it was released as cultivar Jarra. Establishment methods for planting stolon material were developed.
Yields And Nitrogen Contents Of Maize Receiving Fertilizer Nitrogen Or After Alfalfa And Red Clover, M Collins
Yields And Nitrogen Contents Of Maize Receiving Fertilizer Nitrogen Or After Alfalfa And Red Clover, M Collins
IGC Proceedings (1977-2023)
Two experiments compared alfalfa (Medicago sativa L.) and red clover(Trifolium pratense L.) genotypes for supplying N to an ensuing maize (Zea mays L.) crop. A non-fixing alfalfa genotype, which nodulates but fixes no N, served as a control crop. Nitrogen-fertilised maize received 0, 7S, ISO or 22S kg/ha of N annually as NH4NO3• Maize was seeded into I-year-old legume stands killed by N• (phosphono-methyl) glycine isopropylamine. Non-fixing alfalfa yielded 6 t/ha of forage in the first year compared with 9 t/ha or more for normal cultivars. Two-year mean maize grain yields after Dart alfalfa were 9.2 t/ha and …
Effects Of Short-Term Rotations Of Monocultures And Mixtures Of Legumes And Grasses With Rice In The Subtropical Zone Of South-Western China, S R. Zhou, Y G. Yu, K Mao, X M. Gan, Z L. Pu
Effects Of Short-Term Rotations Of Monocultures And Mixtures Of Legumes And Grasses With Rice In The Subtropical Zone Of South-Western China, S R. Zhou, Y G. Yu, K Mao, X M. Gan, Z L. Pu
IGC Proceedings (1977-2023)
Five short-term rotation systems of monocultures and mixtures of legumes and grasses with rice, i.e., Medicago hispida ➔ rice, Trifolium repens cv. Ladino ➔ rice, Astragalus sinicus + lolium multiflorum ➔ rice, Medicago hispida + Lolium multiflorum ➔ rice and Trifolium repens cv. Ladino + Lolium multiflorium ➔ rice, were selected from 8 evaluated in this study in the subtropical zone of south-western China. The average results for these rotational types per year were: forage dry matter 3,63 tlha, forage crude protein 727 .5 kg/ha, metabolisable energy 22.lx!03 MJ/ha, in vitro organic matter digestibility of forages 72.84%, rice yield 7.4 …
Prospects For More Sustainable Cropping Systems In Central Italy Based On Subterranean Clover As A Cover Crop, F Caporali, E Campiglia, R Paolini
Prospects For More Sustainable Cropping Systems In Central Italy Based On Subterranean Clover As A Cover Crop, F Caporali, E Campiglia, R Paolini
IGC Proceedings (1977-2023)
A range of possibilities for increasing long-term sustainability of cropping systems in the mediterranean environment of central Italy is presented, supported by experimental evidence on the use of subterranean clover (Trifolium subterraneum) as living mulch and green manure in a common cash crop rotation (wheat-sunflower). The annual self-regenerating legume proved to have potential for inducing a significant shift towards a less energy-intensive management of such.a specialised cropping system, and also provided innovative and flexible patterns of crop sequences. Tillering capacity of wheat turned out to be a crucial element for sub clover living mulch to act successfully on …
Performance Of Ley Farming Systems Including Annual Legumes And Mixtures Of Legumes With Grasses At Cukurova In Turkey, V Tansi, T Saglamtimur, H Baytekin
Performance Of Ley Farming Systems Including Annual Legumes And Mixtures Of Legumes With Grasses At Cukurova In Turkey, V Tansi, T Saglamtimur, H Baytekin
IGC Proceedings (1977-2023)
Ecological conditions in Cukurova are favourable for production of various crops, including cotton and wheat, so cotton monoculture or cotton-wheat rotation systems have been common for many years. These monoculture systems have brought some soil and pest problems into .Cukurova. To improve the livestock production, intensive dairy units were established, However, half of these were later liquidated since the livestock husbandry was unprofitable, compared with cash cropping. The most limiting factor was the high purchase cost of fodder. Ley fanning is an alternative system in which crops are alternated on the same land to obtain fodder without reducing yields of …
Effect Of Tillage On Regeneration Of Annual Pasture Legumes In Cereal-Livestock Farming Systems, E D. Carter, P G. Fulwood
Effect Of Tillage On Regeneration Of Annual Pasture Legumes In Cereal-Livestock Farming Systems, E D. Carter, P G. Fulwood
IGC Proceedings (1977-2023)
The self-regenerating annual pasture legumes, mainly Medicago spp. (medics) and Trifolium spp, (clovers), are important components of annual pastures on millions of ha in the mediterranean climatic zones of the world. We have shown that tillage practices for cereals and other crops have a severe effect by reducing legume density and productivity after a cropping sequence. Deep-burial of pasture legume seed by disc ploughing and mouldboard ploughing is most detrimental, as a high percentage of seed is buried too deeply to allow emergence, while normal scarifying at 6-8 cm causes little loss of potential legume seed germination and seedling emergence. …
Predicting The Emergence Of Annual Pasture Legumes In Cereal-Livestock Farming Systems Of South Australia, E D. Carter, P G. Oorter
Predicting The Emergence Of Annual Pasture Legumes In Cereal-Livestock Farming Systems Of South Australia, E D. Carter, P G. Oorter
IGC Proceedings (1977-2023)
Annual pasture legumes (mainly Medicago spp. and Trifolium spp.) are the basis of sustainable farming systems in the cereal-livestock distcicts of South Australia. However, several factors in the cropping and pasture phases deplete legume seed reserves. While total legume seed reserves measured during summer and autumn after a cropping sequence are a useful guide to legume regeneration, the readily germinable seed (i.e., soft seed) is a much beUer guide. We have developed a simple but accurate method of predicting natural regeneration of legume pastures based on the controlled watering of representative sites on stubble paddocks during the summer-autumn period as …
Potential Suitability Of Spontaneously Reseeing Stylosanthes Spp. For Ley Farming In The Central Chaco Of Paraguay, A Glatzle
IGC Proceedings (1977-2023)
Continuously cropped regosols in the semi-arid Central Chaco are deficient in organic matter and prone to wind erosion. Ley-farming with self-regenerating legumes may be a sustainable alternative land use. In a 2-year field trial Stylosanthes hamata cv. Verano (V) and a 1: 2 mixture of S. humllis cv. Paterson and S. guianeuis var. intermedia cv. Oxley (P+O) were tested for their: preceding crop values to silage sorghum (S) as compared with continuously cropped S; and potential to recover spontaneously after a reduced tillage intermediate crop of S with weed control (we) or with the voluntary style underseed allowed to grow …
Potential Of Crotalaria Ochroleuca (Marejea) In Traditional Crop And Livestock Production Systems In Tanzania, S V. Sarwatt
Potential Of Crotalaria Ochroleuca (Marejea) In Traditional Crop And Livestock Production Systems In Tanzania, S V. Sarwatt
IGC Proceedings (1977-2023)
In experiments to study the role of Crolalaria ochrroleuca (marejea) in traditional farming systems, the plant was used in the following way: (l) broadcast alone at a rate of 10 kg/ha of seed to determine dry matter (DM) yield, nutritive value and kg N/ha it can fix at different stages of growth, i.e., 2, 4, 6, 8, IO, 12, 14 and 16 weeks. (2) sown under after 3 weeks on alternate ridges with maize and maize alone as control. (3) the leaves at 10 weeks were harvested and supplemented to young sheep grazing 8 h/day. 12 male sheep …
Effect Of Gliricidia Provenances On The Yield Of Soybean And Cassava In An Alley-Cropping System, I M. Nitis, W Puger, M Suarna, W Sukanten, K Lana
Effect Of Gliricidia Provenances On The Yield Of Soybean And Cassava In An Alley-Cropping System, I M. Nitis, W Puger, M Suarna, W Sukanten, K Lana
IGC Proceedings (1977-2023)
An alley-cropping experiment was carried out for 3 years in a dry land farming area in Bali to study the effect of Gliricidia sepium (gliricidia) on soybean and cassava yields. Sixteen provenances of gliricidia were compared, in a completely randomised block design with 6 blocks and 12 plants/provenance. Six of the provenances originated from Mexico (M), 4 from Guatemala (G), I each from Costa Rica (R), Nicaragua (N), Panama (P), Colombia (C), Venezuela (V) and Indonesia (I). Plant spacings were 0.5 m within the alley, with 4 m between alleys. Soybean seeds and cassava sticks were planted between the alley …
Role Of Ley Farming In Crop Rotations In The Tropics, M A. Mohamed Saleem, M J. Fisher
Role Of Ley Farming In Crop Rotations In The Tropics, M A. Mohamed Saleem, M J. Fisher
IGC Proceedings (1977-2023)
Is there a role for ley farming in the agricultural changes desired across the tropics? Hopes were high after the identification of suitable traits for leys in tropical legumes, Despite agroclimatic-suitability similarities for a wide range of tropical crops and forages, socioeconomic conditions vary across the tropics. Increasing debt problems and low prices for agricultural commodities constrain many countries, particularly in tropical Africa, to achieve the needed agricultural growth rates at the current levels of inputs and subsistence land-use practices, Tropical agriculture's inability to meet the growing demand for food is further compounded by declining land productivity and rapid population …
Is Ley Farming In Mediterranean Zones Just A Passing Phase?, T G. Reeves, M A. Ewing
Is Ley Farming In Mediterranean Zones Just A Passing Phase?, T G. Reeves, M A. Ewing
IGC Proceedings (1977-2023)
Ley farming in southern Australia has changed dramatically in the past decade or so. The present version is a more flexible, adaptive one that includes crop legumes, nitrogen fertiliser, direct drilling, and stubble retention. This has resulted in much longer phases of cropping between pasture periods, causing some to designate the new system as "phase farming". Su.ch changes are critical not only in Australia, but also elsewhere, when considering the development and adoption of ley farming in mediterranean-type regions. While the effects of traditional Icy-farming on soil fertility and crop, pasture and livestock production have been well established, there is …
Sesbania Sesban: A Promising Forage Legume In Semi-Arid Central Tanzania, D N. Msariri, M L. Kusekwa
Sesbania Sesban: A Promising Forage Legume In Semi-Arid Central Tanzania, D N. Msariri, M L. Kusekwa
IGC Proceedings (1977-2023)
Seventy-four accessions of Sesbania sesban were evaluated alongside 7 of S. goetzel for forage production at Mpwapwa, In Tanzania. The former was promising while the latter was generally unsuccessful. For S. sesban, germination of scarified inoculated seed in nursery was 34%. Survival of the seedlings was 96% at transplanting at 8 weeks. Growth in the field, measured in terms of mean incremental height, was 2.9 m at l year of establishment. On average, 50% of the plants flowered and formed pods at 158 and 190 days, respectively. Seed yield averaged 348 g per plant, while forage yield averaged 4.5 t …
Increasing The Germination Of Seed Of Fine-Stem Stylo (Stylosanthes Guianesis Var. Intermedia) Using A Heated, Rotating Cylinder, Colin J. Paton
Increasing The Germination Of Seed Of Fine-Stem Stylo (Stylosanthes Guianesis Var. Intermedia) Using A Heated, Rotating Cylinder, Colin J. Paton
IGC Proceedings (1977-2023)
Scarifying pasture legume seed to reduce hard seed content can improve pasture establishment. A heated, rotating cylinder suitable for treating large quantities of seed was used to test the effect of a range of heat doses (measured in cumulative degree-seconds of treatment above 90°C and expressed as degsecs>90°C) on seed of fine-stem stylo (Stylosanthes gulianensis var. lmermedla), Heat doses ranged from O to 1500 degsecs>90°C, A heat dose of 450 degsecs>90°C, achieved by heating seed at 120°C for 15 seconds in the cylinder, gave the highest germination without increasing the proportion of dead seed. This treatment …
Development Of New Stylosanthes Cultivar For Australia From Naturally Occurring Genotypes, L A. Edye, T J. Hall
Development Of New Stylosanthes Cultivar For Australia From Naturally Occurring Genotypes, L A. Edye, T J. Hall
IGC Proceedings (1977-2023)
The productivity and persistence of Stylosamhes hamata cvs, Verano and Amiga and S. scabra cv. Seca were compared in small swards in 20 dry tropical environments over periods of 2-4 years, For consistently high production Verano and Amiga appear to require tropical environments with >760 mm average annual rainfall even though they survive in regions with 500 mm. Seca is much more widely adapted than S. hamata, being highly productive and drought resistant in tropical and subtropical environments, but will not survive lieavy frosts. The opportunities for further plant improvement through selection within these species is described. However, the most …
Pasture Legumes In Cuba: Past, Present, And Future, F Funes, Marta Monzote
Pasture Legumes In Cuba: Past, Present, And Future, F Funes, Marta Monzote
IGC Proceedings (1977-2023)
Before 1960 the utilisation of pasture legumes was scarce. During the decade 1960-1970 more than 10 thousand hectares of Medicago sativa. Neonolonia wightii, Cajanus cajan and Pueraria phaseoloides were sown, but interest decreased later. In the mid 1970s, research was reorganised and since 1980 results were attained showing outstanding performance of the species: N. wightii (10 t DM/ho/ year), ·Teramnus labialis (11.5 t), Lencaena leucocephala (12 I), Medicago sativa (12,5 t), Pueraria phaseoloides (14 t), Stylosanthes guianensis (IS I) and others. Results on ecological adaption, sowing, establishment, rhizobiology, seed production, pest and diseases and other agronomic aspects are …
Establishment And Animal Production Based On Tropical Grass-Legume Pastures, Marta Monzote, F Funes
Establishment And Animal Production Based On Tropical Grass-Legume Pastures, Marta Monzote, F Funes
IGC Proceedings (1977-2023)
Different experiments were carried out to study the establishment of grass-legume swards and animal performam;e from the pastures. Grasses were: Digitarla decumbens, Dichantum sp,, Botriocliloa sp,, Panicum maximum, Cllloris gayana, Cynodon dactylon, Cenchrus setigerus and Cenchrus ciliaris; legumes were: Neonotonia wightti, Macroptllium atropurpuretm, Desmodium intortum, Stylosanthes guianensis and Centrosema pubescens. Good establishment were obtained with minimum tillage of harrowing on the grass cover after heavy grazing or harvesting close to the ground, Broadcast sowing at 2-3 kg/ha was carried out. Growth was slow at I plant/m1 but rapid at S-10 plant/m1, In prepared …
Analysis Of Growth Characteristics And Evaluation As Fodder Resources Of Tropical Leguminous Browses In Subtropical Area In Japan, Y Kawamoto, M Honma
Analysis Of Growth Characteristics And Evaluation As Fodder Resources Of Tropical Leguminous Browses In Subtropical Area In Japan, Y Kawamoto, M Honma
IGC Proceedings (1977-2023)
To evaluate the potential of several tropical leguminous browse species as fodder plants in the subtropical area of Japan, the dry matter yield and quality and resistance to clipping and drought in the first year were examined and compared in browse species. Species such as Deamodiwn tortuoaum, Desmodium discolor, Aeschynomene villosa and herbaceous Stylosanthes guianensis, had relatively high water stress tolerance, All the species were resistant to clipping. The species such as Desmodium tortuosum. Desmodium discolor among Desmodium genus have high potential for dry matter production and nutritive value in this region.
The Aeschynomene Genus As A Source Of Pasture Legumes For Tropical And Subtropical Australia, H G. Bishop, T B. Hilder
The Aeschynomene Genus As A Source Of Pasture Legumes For Tropical And Subtropical Australia, H G. Bishop, T B. Hilder
IGC Proceedings (1977-2023)
Three Aeschynomene cultivars are currently used as pasture legumes for tropical and subtropical Australia; A. falcata·cv, Bargoo released in 1973, A. americana cv, Glenn released in 1983 and A. americana cv. Lee released in 1991. Five other Aeschynomene accessions from 2 species are on "pre-release" registration with the Queensland Herbage Plant Liaison Committee pending additional data on adaptation and animal production: A. brasiliana CPI 92519 and CPI 93592 and A. villosa CPI 37235, 91209 and 93621. A collection of over 300 Aesc/1y1wme11e accessions was grown at Mackay, Queensland, in 1982-83 to describe the diversity within this genus. This diversity supports …
Characterization And Prelimiary Evaluation Of A Large Germplasm Collection Of The Tropical Forage Legume Stylosanthes Scabra Vog., Brigitte L. Maass, R Schultze-Kraft
Characterization And Prelimiary Evaluation Of A Large Germplasm Collection Of The Tropical Forage Legume Stylosanthes Scabra Vog., Brigitte L. Maass, R Schultze-Kraft
IGC Proceedings (1977-2023)
Within the genus, Stylosamhes scabra Vog. has the second largest number of collected accessions worldwide. This tropical forage legume has potential to improve extensive, tropical pastures in subhumid to semi-arid regions with acid and infertile soils, Characterisation and preliminary evaluation of 557 accessions were carried out at Quilichao, Colombia. The main objectives were to characterise. variability within the species and to guide further agronomic evaluation. Wide ranges of morphological, phenological, and agronomic variation exist within the germplasm collection, Accessions originated from north-east and south-east Brazil gave the highest forage yields in 2 cuts. Several accessions were more productive than the …
A Flower Color Marker In The Tropical Forage Legume Centrosema Brasilianum (L.) Benth., Brigitte L. Maass, A M. Torres
A Flower Color Marker In The Tropical Forage Legume Centrosema Brasilianum (L.) Benth., Brigitte L. Maass, A M. Torres
IGC Proceedings (1977-2023)
Cemrosema brasillianum is a legume with high potential for pasture improvement in the semi-arid tropics with acid and infertile soils. Although genetic improvement for disease and pest resistance is taken into consideration, little is known about the species' breeding ·system. Moreover, no plant character inherited in simple Mendelian fashion has been reported for any Centrosema species. In experiments at Palmira, Colombia, 2 white-flowered accessions were hybridised with 6 violetflowered accessions, each of a different hue. Segregation for flower colourin F2 populations fitted a single gene model,colour being dominant over white, Hence, flower colour is a useful genetic marker, Because segregation …
Evaluation And Development Of Desmanthus Virgatus On Medium- To Heavy Textured Soils In Queensland, Australia, B G. Cook, T.W.G Graham, R L. Clem, T J. Hall, M F. Quirk
Evaluation And Development Of Desmanthus Virgatus On Medium- To Heavy Textured Soils In Queensland, Australia, B G. Cook, T.W.G Graham, R L. Clem, T J. Hall, M F. Quirk
IGC Proceedings (1977-2023)
Desmanthmus virgatus is a summer-growing, perennial legume comprising a wide diversity of growth forms. It is native to North and South America where it is often found on neutral to alkaline soils and in areas of low rainfall. Its potential for persistence and spread under grazing on clay soils in semi-arid environments in Queensland has been demonstrated in various experiments since 1978. Three varieties have been selected for commercial release through a state-wide coordinated programme of evaluation which began in 1987. These were selected on the basis of yield and persistence, and to exploit the range of growth habits and …