TECHNOLOGY FOCUS - AGRICULTURE - Preferred Process: In the process, a first plot of land is harvested and replanted, and then another plot of land is harvested and replanted in sequence so that there is a substantially continual supply of freshly harvested plants available for the bioethanol production plant. The plots of land are harvested and re-planted sequentially every day. The plots of land are arranged together in a cultivation unit. The plots of land or cultivation units are provided to produce enough fresh plants to meet the feedstock requirements of the bioethanol production plant. The number of plots of land or cultivation units is selected depending on the local climatic conditions and the number of crops of plants produced by each plot of land per year. The plants (3 crops per annum) are grown in at least some of the plots of land under tropical conditions, the plants (2.5 crops per annum) are grown in at least some of the plots of land under subtropical conditions or the plants (2 crops per annum) are grown in at least some of the plots of land under cool subtropical conditions. The eight warm subtropical cultivation units supply 1280 tonnes of fresh plant material a day to the bioethanol production plant to provide enough feedstock to produce about 160000 liters of ethanol/day or about 56 million liters/year. The tropical cultivation units (8.1), warm subtropical units (8.6) or cool subtropical units (9.5) are provided to meet the feedstock requirements of 60 million liters/year bioethanol production plant. In the process, at least one access road is provided to allow farm equipment to reach each individual plot of land and to ship harvested plants to the bioethanol production plant. In the process, at least some of the plants are grown under artificially controlled light and/or temperature conditions; and more than one crop a year of the plants are grown in temperate regions by growing at least some of the plants outdoors during warm months of the year and growing at least some of the plants indoors under glass or polythene during cold months. The effluent water rich in plant nutrients from the bioethanol production plant is to promote the growth of the plants. The lignocellulose material from the plant material is subjected to prehydrolysis with potassium hydroxide or nitric acid in the bioethanol production process. The waste liquor from the prehydrolysis process is neutralized with nitric acid or potassium hydroxide to produce effluent water containing potassium nitrate. The wastewater from the bioethanol production process is added to the neutralized liquor, where the relative amounts of potassium and nitrogen in the effluent water are adjusted to suit the nutrient needs of the plants, and the effluent water is then used as liquid fertilizer to promote the growth of the plants. The phosphorus is added to the effluent water in an amount to suit the nutrient needs of the plants. The effluent water is reoxygenated to above normal levels. The effluent water is supplied to the plants by either a spray or drip-feed surface irrigation system, or by a sub-surface irrigation system, where the water is supplied to the roots of the plants. The plants are grown in the same country as that in which the bioethanol production plant is located. The plants are grown on plantations located close to the bioethanol production plant. The planting is staggered so that different plants are ready for harvesting at different points throughout the year, and where the plants are ready for harvesting have reached maturity and are harvested to provide a fresh supply of plant material for the bioethanol production plant. The sugar or grain bearing plants are grown in plots of land around the bioethanol production plant. The plots of land are located adjacent one another. The plots of land are arranged around the production plant. Preferred Components: The plants are sweet Sorghum plants. The plots of land each have the same predetermined area. The predetermined area is 1.1 hectares. The cultivation unit in tropical conditions has 112 plots of land and a total cultivatable area of 123 hectares, the cultivation unit in warm subtropical conditions has 128 plots of land and a total cultivatable area of 141 hectares, and the cultivation unit in cool subtropical conditions has 144 plots of land and a total cultivatable area of 158 hectares. The plants take: approximately 100 days to reach maturity, under tropical conditions; 120 days to reach maturity, under warm subtropical conditions; and 140 days to reach maturity, under cool subtropical conditions. The approximate yield of fresh plant material from: the tropical cultivation unit is 59000 tonnes/year; the warm subtropical unit is 56400 tonnes/year; and the cool subtropical unit is 50600 tonnes/year. The yield of ethanol from the plant material is approximately 125 litres/tonne of fresh material. The yield of ethanol produced from: tropical cultivation unit is 7.4 million liters/year; warm subtropical cultivation unit is 7 million liters/year; and cool subtropical cultivation unit is 6.3 million liters/year. EXAMPLE - No suitable example given.