Physical Sciences and Mathematics Commons^™

Short Term Variations In The Leaf Area Index, Tiller Density And Botanical Composition Of The Grassland In Inner Mongolia As Affected By Light To Very Heavy Grazing Intensities, H. Wan, P. Schönbach, M. Gierus, Anne Schiborra, Y. Bai, Friedhelm Taube

IGC Proceedings (1997-2023)

No abstract provided.

A New Computer Program For The Calculation Of Pasture Carrying Capacity, Andrea Pardini, F. Longhi, M. R. Mosquera Losada, A. Rigueiro Rodriguez

IGC Proceedings (1997-2023)

No abstract provided.

Predicting Botanical Composition Of Grass‐Clover Pastures Mixtures Using Near‐Infrared Reflectance Spectroscopy, N. S. Al-Ghumaiz, R. H. Leep, T. S. Dietz

IGC Proceedings (1997-2023)

No abstract provided.

Fluorometry--An Evolving Methodology For Range Animal Ecologists, Dean M. Anderson, Gary D. Rayson

IGC Proceedings (1997-2023)

No abstract provided.

Productivity And Persistence Of Kura Clover-Grass Mixtures, Philippe Seguin, R. Drapeau

IGC Proceedings (1997-2023)

No abstract provided.

Botanical Composition: A Tool To Evaluate Rangeland Condition Trends Under Different Management Conditions, María Cristina Goldfarb, José Francisco Casco, Laura Itatí Giménez, Francisco Nuñez

IGC Proceedings (1997-2023)

No abstract provided.

Botanical Composition Of A Phalaris-Dominant Pasture 5 Years After The Introduction Of Intensive Rotational Grazing, Nicholas J. Edwards, K. Copping, K. Holberton, P. Wijnands

IGC Proceedings (1997-2023)

No abstract provided.

Animal Production In A Subtropical Region Of Mexico: Rangeland´S Productive Characteristics, Benito Albarrán-Portillo, C. M. Arriaga-Jordan, Isela G. Salas Reyes, Fernando Vicente Mainar, Adela Martinez Fernandez, Francisca Aviles Nova, Rolando Rojo Rubio

IGC Proceedings (1997-2023)

Dual-purpose cattle farms (DP) in México and in particular in the south west of the State of México are low input, based on tropical pastures under extensive management combined with fodder trees and shrubs that contributes to forage production during the dry season, where grasses are scarce. Farms land extension ranged from 30 to 300 hectares. The stoking rate is low with less than a cow per ha. There is only a perimetral fence, there is no pasture´s subdivision. Cows browse freely within the rangeland 24 h/d all year round. Cattle are predominantly Brow Swiss with small proportion of zebu …

Integrating Mechanical And Cultural Control Treatments To Manage The Invasive Shrub Chromolaena Odorata In Grassland Areas, Muhammad Rusdy, E. K. Budiman

IGC Proceedings (1997-2023)

Chromolaena odorata (L.) King and H. Robinson, is a major invasive weed of pastures and plantation crops in many countries and has become one of the worst invasive plants in grassland areas in Indonesia. Chromolaena can grow rapidly and form infestations that can suppress pasture by competing for nutrients and water, and by over-shading. Its allelopathic effect lowers productivity of desirable forage species with a concomitant loss of livestock production. Chromolaena leaves, especially when young, are toxic to animals due to high levels of nitrate (5 - 6 times above toxic level) (Sajise 1974).

Control of Chromolaena is difficult due …

Effect Of Nitrogen Fertiliser Applications On Botanical Composition, Lydia R. Turner, Daniel J. Donaghy, Keith G. Pembleton, Richard P. Rawnsley

IGC Proceedings (1997-2023)

The diminishing returns associated with nitrogen (N) fertiliser use over time are well recognised, as are the detrimental effect to the environment of excess N fertiliser use (Eckard 1998). However, many Tasmanian dairy farmers apply continually high rates of N fertiliser (e.g. in excess of 500 kg/ha annually) to minimise risk associated with variable pasture dry matter (DM) yields, and this often occurs at the expense of white clover populations within the pasture (Frame 1990; Frame et al. 1998). The responses of botanical composition and perennial ryegrass DM yields to N fertiliser application rate were investigated in the …

Seasonal Influence On Botanical Composition Of Plantain, Chicory, White- And Red-Clover Based Herbage Mixes, Sharini Carol Somasiri, Paul R. Kenyon, Peter D. Kemp, Patrick C. H. Morel, Stephen T. Morris

IGC Proceedings (1997-2023)

Use of herb based sward mixes that are productive in different weather conditions could be an effective option to provide feed requirements for finishing lambs year round compared to ryegrass (Lolium perenne L.)/white clover (Trifolium repens L.) sward in New Zealand (Kemp et al., 2010). Herbs such as plantain (Plantago lanceolata L.) and chicory (Cichorium intybus L.) and the legumes such as white clover and red clover (Trifolium pratense L.) as pure swards are known to improve lamb performance compared to ryegrass/white clover. Therefore, there is scope to have …

Patch-Differentiation Of Vegetation And Nutrient Cycling In An Extensive Pasture System, Bettina Tonn, Anika Wirsig, Manfred Kayser, Nicole Wrage-Mönnig, Johannes Isselstein

IGC Proceedings (1997-2023)

In extensive grazing systems, ‘patch-grazing’ may lead to the development of a mosaic structure consisting of short, frequently defoliated, and tall, infrequently defoliated patches. If spatial patterns of sward structure are stable over time, this may result in a long-term differentiation of botanical composition and matter fluxes between patch types within a pasture. Patch dynamics, botanical composition and topsoil nutrient concentrations of different patch types were investigated in a long-term grazing experiment in the Solling hills, Germany, where differentiated grazing intensities have been applied for 10 years. Continuously stocked beef cattle grazed to target sward heights of 6 or12 cm …

Estimating Pasture Land Cover In The New England Region Of Northern New South Wales, Graham E. Donald, Mark Trotter, Elizabeth L. Hulm

IGC Proceedings (1997-2023)

Land cover across the southern Australian temperate agricultural region comprises primarily of native pasture, introduced improved pastures and crops for livestock production and also perennial remnant vegetation. A feed-base pasture audit was carried out throughout southern Australia commencing mid-year 2011 (Donald and Burge 2012; Donald et al. 2012). The purpose of the audit was to map and analyse information obtained about the pasture feed-base for livestock production by surveying Statistical Local Areas (SLAs) across the southern states. The purpose of this Feed-Base audit was to survey pastures within agricultural NSW, Victoria, Tasmania, South Australia and South-Western Australia, collate these …

Calibration Of The Rising Plate Meter For Pasture Yield Determination In Kikuyu (Pennisetum Clandestinum) Over-Sown With Ryegrass (Lolium Spp.), Janke Van Der Colf, Philip R. Botha, Robin Meeske, Wayne F. Truter

IGC Proceedings (1997-2023)

Accurate feed budgeting and management of forage in grazing systems requires frequent assessment of forage mass and growth of pastures (Gabriёls and Van den Berg 1993; Sanderson et al. 2001). The rising plate meter (RPM) developed by Earle and McGowan (1979) has been used widely by researchers and farmers to estimate pasture dry matter (DM) production. The advantages associated with using the RPM for the estimation of pasture DM yield include its low sensitivity to environmental conditions, stability of calibration equations across years and seasons (if pasture composition remains similar), and the fact that its robustness and ease of …

Effect Of Enclosure And Open Grazing On Diet Selection, Relative Preference Index And Voluntary Intake By Sheep At El-Khuwei Locality North Kordofan State Sudan, Mohammed Abdelkreim, Babo Fadlalla

IGC Proceedings (1997-2023)

The nutritive value of a pasture depends mainly on its in-take and the selection animals exert in consuming the different species or the various parts of a determined plant (Mayes and Dove 2000). Animal production in North Kordofan State is mainly traditional depending on natural rangeland (Cook and Fadlalla 1987; DHP 1998). The State is rich in animal and range resources. It contains more than 13 million head of sheep, goats, camels and cattle (IFAD 2011).

The study aims to provide information that contributes to a better understanding of the plant-animal inter-actions through knowledge of diet botanical composition, forage biomass …