Energy audits are an excellent way of measuring farm energy use and potentially saving money on electricity bills. Audits are expensive, in the order of $10,000 for a detailed level 2 audit of a large-scale vegetable farm, but savings can be considerable, and the pay-back period is commonly about 1-2 years. In addition, there is [...]
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There are a number of electrical power generation technologies which are suitable for use on farm. These options can be compared using the ‘levelled cost of energy’ (LCOE). This is the average price of electricity generated over the plant life taking into account all costs and maintenance required. As it takes into account all costs [...]
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There are two main effects of elevated CO2 on the nitrogen nutrition and growth of vegetable crops: First, as CO2 levels increase, the level of nitrogen in the tissue of plants decreases. This is due to more efficient use of nitrogen by plants grown at high CO2 and means that less nitrogen is required to produce [...]
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