Advances in Agrophysical Research by Stanislaw Grundas and Andrzej Stepniewski

By Stanislaw Grundas and Andrzej Stepniewski

The assumption of this publication used to be born as a result of the speedy bring up of the curiosity in excellence of agricultural construction within the element of either – the standard of uncooked fabric for meals construction in addition to within the element of setting security. Agrophysics is a box of technology that makes a speciality of the standard of agriculture as a complete i.e. the interplay among human and setting, particularly the interplay among soil, plant, surroundings and computer. Physics with its legislation, ideas and principles is an efficient instrument for description of the interactions, in addition to of the result of those interactions. a few elements of chemistry, biology and different fields of technology also are taken into consideration. This interdisciplinary technique may end up in holistic description of methods which should still result in development of the potency of acquiring the uncooked fabrics to make sure a enough volume of nutrients, secure for human wellbeing and fitness. This e-book can be considered as the contribution to this description. The reader can locate a few uncomplicated in addition, as extra specific points of the modern agriculture, beginning with the soil features and therapy, plant development and agricultural items’ homes and processing.

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The commercial price of soil as the production medium. Protec‐ tion of soil as element of natural environment was the reason of initiating in 1980 year of national program of soil mapping in Norway. The projects of soil monitoring were limit‐ 35 36 Advances in Agrophysical Research ed to the region of Western Europe and it was evident that later projects should have been integrated in the frame of the whole Europe (Montanarella, 2002). It was realized that soil performs the multitude of functions including supporting plant and animal pro‐ ductivity, maintaining or enhancing water and air quality and supporting human health and habitation, which all define the soil quality (Nortcliff, 2002).

It is evident, that they should include water content and/or water potential of the soil as the fundamental parameters. A soil physical parameter defined as the slope of the soil water re‐ tention curve at its inflection point (Dexter, 2004) can be used as an index of soil physical quality that enables different soils and the effects of different management treatments and conditions to be compared directly. 2. e. texture, taste, appearance and stability of foods depends on the amount of water they contain.

The relative dielectric permittivity of water for frequencies of the electric field below the relaxation frequency of 18 GHz is equal to about 80, while for the soil solid phase its value is of about 4 – 6. Therefore, the dielectric permittivity of soil is strongly dependent on the water content. The influence of the temper‐ 21 22 Advances in Agrophysical Research ature in many cases may be neglected (Skierucha, 2009). The salinity of the soil may also in‐ terfere with the water content measurement, however its influence is negligible for the electric field frequencies of the order of 400 MHz and higher (Skierucha and Wilczek, 2010).

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