Download Decision support systems in potato production: Bringing by D. K. L. Mackerron, A. J. Haverkort PDF

By D. K. L. Mackerron, A. J. Haverkort

Versions of crop development and improvement have been initially conceived for medical reasons. usually, they describe the mechanisms of crop construction, improvement from emergence via tuber initiation to senescence decided via temperature and day-length. development is pushed via sunlight radiation intercepted through the foliage. Yields are greater through the supply of water and meals and will be decreased via pests, ailments and weeds. those medical types are leaving the examine institutes and more and more have gotten a way of data move for college students, and most significantly, to growers and their intermediaries similar to extensionists and specialists. Many determination aid structures (DSS) have a mechanistic version middle that assures their robustness and reliability. This ebook provides an summary of model-based DSS in potato creation. selection help structures are utilized by the processing to lead them to promising creation parts and through breeders to spot the best genotype for such environments. specialists and soil laboratories use them in addition to farmers to optimize using nitrogen, water and chemical substances to regulate bugs, nematodes, past due blight and weeds

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Wheat has a low harvest index because the crop has to invest in straw. Rice is one quarter as efficient as potato as it not only has a low harvest index but the paddy-grown crop also loses water through evaporation and then leaching is not even accounted for. Moreover, potato is grown in a cool season with a low evaporative demand, unlike rice, which is grown when temperatures are high. POTATO-ZONING can be used to calculate the water use efficiency in potato production by shifting the growing season to cooler periods of the year or by exploring the impact of shortening the season when it gets too hot late spring.

Kropff et al. J. M. Oomen, 1997. Environmental and economic effects of site specific and weather adapted nitrogen fertilization for a Dutch field crop rotation. In: Precision agriculture ‘97. V. ) Oxford: Bios, pp 379-386. J. & S. Reusch, 1997. Zur teilflächenspezifischen Stickstoff-Kopfdüngung Landtechnik. 52 126-127. J. M. Dwyer, 1996. Canopy light reflectance and field greenness to assess nitrogen fertilization and yield of maize. Agronomy Journal 88 915-920. H. E. Larsen, 1999. Proceedings of the fourth international conference on precision agriculture.

J. S. Geological Survey’s EROS Data Center in Sioux Falls, South Dakota. Elevations in GTOPO30 are regularly spaced at 30 arc seconds (approximately 1 kilometre). Figure 4 shows a strong correlation between elevation on the one hand and maximum, average and minimum temperatures on the other. A maximum temperature of 28°C (the upper limit for potato growth used in the global study) is linked with an average temperature of 23°C and a minimum temperature of 18°C, at an elevation of 650 m. Stol et al.

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