ISHS Acta Horticulturae 605: II International Symposium on Fig
STATE OF DEGRADATION OF THE SOILS DEDICATED TO FIG CULTIVATION IN ELCHE (ALICANTE, S.E. SPAIN) |
| Authors: | C.N. Martínez Cano, P. Marín Sanleandro, A. Faz Cano |
| Keywords: | Salinitation, fig, ficus carica, degradation, fertility, alkalinisation, conservation, regeneration |
| Abstract:
We attempt to identify parameters which will help evaluate the degradative state of soils in the study area in order to be able to carry out conservation and recovery strategies and to improve the profit margin/ yield of figs. For this, a representative profile of a hypercalcic Calcisol (FAO, 1998) and 13 soil samples taken from two depths (0-30 and 30-60 cm) were studied. After studying the field and general analytical data (Brotons et al, 2001), the present state of fertility was examined by reference to the soluble and exchange complex-adsorbed sodium, calcium, potassium and magnesium contents, which would pass to the soil solution as they were needed by crop or be lost though leaching. To ascertain the salinity of the soils, the following were determined: percentage of salts, electrical conductivity of the saturation extract and its composition when the value was above 2 dS m-1, the Cl-, SO4-2 and NO3- anions and Na+, K+, Ca+2 and Mg+2 cations. Lastly, we calculated the Sodium Adsoption Ratio (S.A.R.) which indicates the tendency of the sodium cation to enter the exchange complex, which represents a clear risk of alkalinisation. | |
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