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Diagnosing Nitrogen, Phosphorous And Potassium Status Of Natural Grassland In The Presence Of Legumes, C. Jouany, P. Cruz, J. P. Theau, M. Duru
Diagnosing Nitrogen, Phosphorous And Potassium Status Of Natural Grassland In The Presence Of Legumes, C. Jouany, P. Cruz, J. P. Theau, M. Duru
IGC Proceedings (1997-2023)
In most temperate areas, sustainable management of grassland ecosystems has to deal with evaluation and management of N, P and K resources. For this purpose, appropriate diagnostic systems are needed in order to manage fertilisation accordingly. The nutrient index method based on nutrient concentrations in plant tissues relative to the degree of growth has been developed; it relies on critical curves which serve for diagnostic: for N, the critical curve gives the optimum N concentration for different levels of biomass accumulation in swards, for P and K optimum concentrations are a linear function of sward N concentration (Duru & Thélier-Huché, …
Estilosantes Campo Grande In Brazil: A Tropical Forage Legume Success Story, Celso D. Fernandes, Bela Grof, S. Chakraborty, Jaqueline R. Verzignassi
Estilosantes Campo Grande In Brazil: A Tropical Forage Legume Success Story, Celso D. Fernandes, Bela Grof, S. Chakraborty, Jaqueline R. Verzignassi
IGC Proceedings (1997-2023)
Estilosantes Campo Grande (ECG) is a mixture (80/20 by weight) of Stylosanthes capitata and S. macrocephala, derived through genetic combination of selected accessions by open crossing over 6 generations (Grof et al., 2001). The cultivar is the result of >10 years of research on a collection of >1000 ecotypes of Stylosanthes species collected and maintained by Embrapa. The main use of ECG in Brazil is to improve grass-dominant pastures. It has good persistence with Brachiaria spp., Panicum maximum (Tanzania-1 and Mombaça) and Andropogon gayanus. It has excellent adaptation to low fertility sandy soils and is persistent under …
Tropical Kudzu (Pueraria Phaseoloides): Successful Adoption In Sustainable Cattle Production Systems In The Western Brazilian Amazon, Judson F. Valentim, C. M. S. De Andrade
Tropical Kudzu (Pueraria Phaseoloides): Successful Adoption In Sustainable Cattle Production Systems In The Western Brazilian Amazon, Judson F. Valentim, C. M. S. De Andrade
IGC Proceedings (1997-2023)
In 1976 the Program for Reclamation, Improvement and Management of Pastures in the Brazilian Amazon (PROPASTO), conducted by Embrapa, established on-farm experiments in the State of Acre. These experiments consisted of introducing and evaluating grass and grass-legume stands, both under cutting and grazing. Similar experiments were established in all states in the region. Since then, research has recommended new species of grasses, legumes and grass-legume associations for establishment of improved pastures in the Brazilian Amazon. The grass cultivars recommended were an instant success with farmers, with Brachiaria brizantha cv. Marandu becoming the predominant species, occupying approximately 80% of the total …
Variation Within The Species Macroptilium Atropurpureum Regarding Adaptation To Grazing, Cam K. Mcdonald, R. J. Clements
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 …
Dual Purpose Cowpea For West Africa, Shirley A. Tarawali, I. Okike, P. Kristjanson, B. B. Singh, P. K. Thornton
Dual Purpose Cowpea For West Africa, Shirley A. Tarawali, I. Okike, P. Kristjanson, B. B. Singh, P. K. Thornton
IGC Proceedings (1997-2023)
Cowpea (Vigna unguiculata (L.) Walp. ) is grown as an intercrop with cereals in some 9M ha of West Africa, mostly in the dry savanna. Though grain yields are low (circa 500 kg/ha), it is a nutritious food and dry season fodder. The haulms (leaves and stems) are cut and stored after grain harvest. It aids soil fertility by fixing soil N and returning N via manure from ruminants fed with haulms. Up to the early 1990s, research had focused on developing high grain yielding varieties. Recognition of farmers' appreciation of multiple uses, in particular the fodder value and …
Stylos: The Broad Acre Legumes Of N Australian Grazing Systems, John P. Rains
Stylos: The Broad Acre Legumes Of N Australian Grazing Systems, John P. Rains
IGC Proceedings (1997-2023)
Early accidental introduction of Stylosanthes humilis into the N Australian savannas in the early 20th century and its contrived spread by the late 1960s led to the release of more perennial types. Townsville Stylo, as it was known, colonised large areas and had reached its climatic and agronomic limits by the 1970s. It had a major impact on beef production in areas where natural carrying capacities were relatively low. The precedent of Townsville Stylo directed attention to the genus Stylosanthes. This impact continued until 1974 when anthracnose virtually wiped it out. Fortunately 2 other Stylosanthes species, S. hamata cv. Verano …
Qtls For Morphogenetic Traits In Medicago Truncatula, B. Julier, T. Huguet, J. M. Prosperi, P. Barre, Christian Huyghe, G. Cardinet
Qtls For Morphogenetic Traits In Medicago Truncatula, B. Julier, T. Huguet, J. M. Prosperi, P. Barre, Christian Huyghe, G. Cardinet
IGC Proceedings (1997-2023)
Plant morphogenesis that includes growth, development and flowering date, drives a large number of agronomical important traits in both grain and forage crops. Quantitative trait locus (QTL) mapping is a way to locate zones of the genome that are involved in the variations observed in a segregating population. Co-location of QTLs and candidate genes is an indication of the involvement of the genes in the variation. The objective of this study was to analyse segregation of aerial morphogenetic traits in a mapping population of recombinant inbred lines of the model legume species M. truncatula , to locate QTLs and candidate …
Effects Of The Stage Of Growth And Inoculation On Proteolysis In Field Pea Silage, L. Cavallarin, G. Borreani, S. Antoniazzi, E. Tabacco
Effects Of The Stage Of Growth And Inoculation On Proteolysis In Field Pea Silage, L. Cavallarin, G. Borreani, S. Antoniazzi, E. Tabacco
IGC Proceedings (1997-2023)
Ensiling legumes is a good way of providing home-grown protein in dairy farms but severe protein degradation can occur when conserving legumes. Peas (Pisum sativum L.) are legumes with a high crude protein and starch content, that provide a high forage yield in a short growing period. Very little information is available on the protein value of field pea silage. The aim of the study was to investigate the effect of stage of maturity and inoculant application on proteolysis in field pea silage in the Po Valley, NW Italy.
Effect Of Feeding Red Clover, Lucerne And Kale Silage On The Voluntary Intake And Liveweight Gain Of Growing Lambs, R. Fychan, C. L. Marley, M. D. Fraser, R. Jones
Effect Of Feeding Red Clover, Lucerne And Kale Silage On The Voluntary Intake And Liveweight Gain Of Growing Lambs, R. Fychan, C. L. Marley, M. D. Fraser, R. Jones
IGC Proceedings (1997-2023)
Despite a need for alternative forages to provide home-grown sources of protein (Wilkins & Jones, 2000), there have been few studies comparing the effects of such forages on lamb production when fed as silage. In this experiment the effects of offering ensiled red clover (Trifolium pratense), lucerne (Medicago sativa) and kale (Brassica oleracea) on voluntary intake and liveweight gain in growing lambs were compared.
Responses To Grass Or Red Clover Silages Cut At Two Stages Of Growth In Dairy Cows, A. Vanhatalo, K. Kuoppala, S. Ahvenjärvi, M. Rinne
Responses To Grass Or Red Clover Silages Cut At Two Stages Of Growth In Dairy Cows, A. Vanhatalo, K. Kuoppala, S. Ahvenjärvi, M. Rinne
IGC Proceedings (1997-2023)
Red clover has an important role in organic farming, and also potential to reduce dependence on N fertilisers in conventional farming. This experiment compared dairy cow responses to grass and red clover silages cut at two stages of growth.
Effects Of Stage Of Growth And Inoculation On Fermentation Quality Of Field Pea Silage, G. Borreani, L. Cavallarin, S. Antoniazzi, E. Tobacco
Effects Of Stage Of Growth And Inoculation On Fermentation Quality Of Field Pea Silage, G. Borreani, L. Cavallarin, S. Antoniazzi, E. Tobacco
IGC Proceedings (1997-2023)
Field peas (Pisum sativum L.) are a short-term catch crop with a high crude protein content, which provides a high forage yield in a short growing period. Since field peas are a succulent crop and are difficult to field cure, it is preferable to directly ensile them to prevent weather damage and excessive grain losses. The onset of lodging is delayed in field pea varieties, since the crop is supported by the tendrils in a more erect manner, and this allows easy harvesting without soil contamination even at advanced stages of maturity (Koivisto et al., 2003). To …
Opportunities And Challenges In Augmenting Honey Bee Forage Resources With Pasture Legumes In Southern Australia, M. Kratz, M. Brown, M. T. Newell, R. C. Hayes
Opportunities And Challenges In Augmenting Honey Bee Forage Resources With Pasture Legumes In Southern Australia, M. Kratz, M. Brown, M. T. Newell, R. C. Hayes
IGC Proceedings (1997-2023)
More than 80% of Australian honey is produced from native tree and shrub species. However, with increasing demands on public lands along with production risks posed by drought, floods and wildfires, there is a need to identify alternative forage resources to augment Australian honey production. With over 30 pasture legumes now available for agriculture in southern Australia, opportunity exists to increase the utilisation of some species with co-benefits to multiple production industries. However, there is little understanding of the potential value of most pasture legumes for honey production, and side by side comparisons are complicated by factors such as differences …