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	Provedor de dados AgEcon (2) Autor Lawes, Roger A. (2) Cacho, Oscar J. (1) Ewing, Michael A. (1) Finlayson, John D. (1) Metcalf, Tess (1) Robertson, Michael J. (1) Zull, Andrew F. (1) Mais... Palavra-chave Chinee apple (1) Environmental Economics and Policy (1) Grazing (1) Livestock Production/Industries (1) Rangelands (1) Stochastic dynamic programming (1) Weed control (1) Woody weeds (1) Mais... Tipo do documento Conference Paper or Presentation (2) Ano 2010 (1) 2009 (1) País United States (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Optimising woody-weed control AgEcon Zull, Andrew F.; Cacho, Oscar J.; Lawes, Roger A.. Woody weeds pose significant threats to the 12.3 billion dollar Australian grazing industry. These weeds reduce stocking rate, increase mustering effort, and impede cattle access to waterways. Two major concerns of woody-weed management are the high cost of weed management with respect to grazing gross margins, and episodic seedling recruitments due to climatic conditions. This case study uses a Stochastic Dynamic Programming (SDP) model to determine the optimal weed management decisions for chinee apple (Ziziphus mauritiana) in northern Australian rangelands to maximise grazing profits. Weed management techniques investigated include: no-control, burning, poisoning, and mechanical removal (blade ploughing). The model provides clear weed management... Tipo: Conference Paper or Presentation Palavras-chave: Woody weeds; Weed control; Chinee apple; Rangelands; Grazing; Stochastic dynamic programming; Livestock Production/Industries. Ano: 2009 URL: http://purl.umn.edu/47620 Bio-economic evaluation of pasture-cropping, a novel system of integrating perennial pastures and crops on crop-livestock farms AgEcon Finlayson, John D.; Lawes, Roger A.; Metcalf, Tess; Robertson, Michael J.; Ewing, Michael A.. Pasture-cropping is a novel approach to increase the area of perennial crops in mixed sheep and cropping systems. It involves planting annual cereals directly into a living perennial pasture. There is interest in subtropical grasses as they are winter dormant and their growth profile is potentially well suited to pasture-cropping. However, a wide range of factors can affect the uptake of such systems. This paper assesses the relative importance of factors that can influence decisions to introduce pasture-cropping. In this paper the research question is: what factors predispose a farm to take up a new technology such as (1) subtropical grass and (2) subtropical grass that is pasture-cropped. The analysis uses the MIDAS model of a central wheatbelt farm in... Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/59074 Registros recuperados: 2 Primeira ... 1 ... Última

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