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| Topp, C F E; Watson, C A; Rees, R M; Stockdale, E A. |
| A balanced use of resources within organic farming systems is required to maintain sustainable systems. Hence, it is essential to have tools that can assess the use of resources within the farming system and their impact on the environment. The range of tools that have been developed include those assessing local farm-scale issues together with those that assess impacts at the global scale. At the global scale assessments are usually made on the basis of a unit of product whereas at the local scale assessments can also be made on an area basis. In addition, the tools also assess a variety of issues, e.g. biodiversity, pollution potential, energy and water use. The level of detail required for the different assessment tools differs substantially;... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects Production systems Production systems Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/10162/1/Energy_and_environmental_burdens_of_organic_and_non%2Dorganic_agriculture_and_horticulture.pdf |
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| Hoad, S P; Davies, D H K; Topp, C F E. |
| Selection of cereal varieties suited to organic farming requires a different, but complementary, approach to that used when developing cereals for conventional high input systems. Selection is based on the interaction between a series of desirable plant and crop characteristics, in particular competitive ability against weeds. Certain key characteristics that are generically desirable for organic cereal varieties include: (1 good establishment ability, (2) high tillering ability, (3) increasing plant height, (4) planophile leaf habit, (5) high leaf index and (6) robustnesses in yield performance across sites. Our data strongly suggest that high crop ground cover is the most important feature for creating a highly competitive crop that also has consistency... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/10201/1/How_to_select_varieties_for_organic_farming_%2D_science_and_practice.pdf |
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| Padel, Susanne; Gerrard, Catherine L; Leach, Katharine; Smith, Laurence G; Topp, C F E; Watson, Christine. |
| In low-input and organic systems, nutrient management is key to ensuring the short-term productivity and the longer-term sustainability of the farming system. Farm-gate nutrient budgets/balances calculate the inputs of nutrients to, and outputs from a system. Hence, they can be used to assess the nutrient use efficiency. Nutrient balances of 69 organic and low-input dairy farms in seven European countries were carried out using a sustainability assessment tool. The tool assesses each individual farm against a number of indicators. Part of the assessment of nutrient management is the calculation of an N,P,K budget, based on physical inputs and outputs for each enterprise. The results show considerable variation in the calculated N,P,K balances. The paper... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects; Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/25556/1/15%20PADEL_GERRARD.pdf |
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