By Hermann J. Heege (auth.), Hermann J. Heege (eds.)
ISBN-10: 9400767595
ISBN-13: 9789400767591
ISBN-10: 9400767609
ISBN-13: 9789400767607
High yields and environmental keep an eye on in crop farming demand specified variations to neighborhood starting to be stipulations. Treating huge fields in a uniform approach via excessive skill equipment can't be considered as a sustainable process for plenty of occasions. simply because modifications current inside unmarried fields needs to be thought of. The transition from former box paintings performed manually or by way of small implements to present-day high-capacity equipment brought on that the farmers misplaced the rapid and shut touch with soils and plants. in spite of the fact that, glossy sensing and controlling expertise could make up for this deficit. excessive tech equipment that come with proximal sensing and indications from satellites grants for controls that let adjusting farming operations to small fractions of 1 ha and occasionally even all the way down to a few m2, for that reason in a site-specific mode. this is applicable to operations for soil cultivation, sowing, fertilizing and plant security. This e-book bargains with site-specific recommendations, purposes and results.
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Extra info for Precision in Crop Farming: Site Specific Concepts and Sensing Methods: Applications and Results
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4 Inaccuracies and expenditures for different global positioning systems System Autonomous GPS, coded signal, single freq. Differential GPS, coded signal, single frequency Differential GPS, carrier phase signal, dual frequ. Real-time kinematic differential GPS Inaccuracy 2–25 m Expenditures Receiver (€) 70–400 Reference signal None 1–3 m 1,000–3,000 0–500 €/a 10–30 cm 5,000–10,000 1,000–2,000 €/a 1–4 cm 20,000–40,000 None (own reference station) time within a period during which signals cannot be received.
5 Microwaves or Radar Instead of Visible or Infrared Waves sp ec ul ar re fle ct ion Practically all sensing limitations that arise from atmospheric barriers (Fig. 3) including clouds are removed when microwaves are used. The name “microwaves” can be misleading, since their spectral region has the longest waves used in remote sensing. Hence the microwaves also have the lowest energy per photon. The limitations that arise from this for sensing from satellites are overcome by using active sensors with special antennas that provide a high sensitivity.
And manual control is simply resumed by turning the steering wheel. In principle, automatic guidance systems can also be used for the headland turns. However, presently many farmers still use it only for the passes across the field and steer manually at the headlands. Hence most of the time, they are relieved from steering and can concentrate on supervising and adjusting the remote-controlled implements. Shortly before the machine arrives at the headlands, a sound reminds the driver. After having completed the manual turning, the driver again pushes the button for automatic control.
Precision in Crop Farming: Site Specific Concepts and Sensing Methods: Applications and Results by Hermann J. Heege (auth.), Hermann J. Heege (eds.)
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