Agrochemical properties soil fertility parameters in relation to plant nutrition /
Soil is an environment with a high degree of heterogeneity from the point of view of the content of nutritious elements and of the mobility and bioavailability of these elements for the crops. The studies and research on which the present paper relies aimed at assessing the level of fertility of the...
Elmentve itt :
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| Testületi szerző: | |
| Dokumentumtípus: | Cikk |
| Megjelent: |
Szegedi Tudományegyetem Mezőgazdasági Kar
Szeged
2011
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| Sorozat: | Agrár- és vidékfejlesztési szemle
6 No. 1 |
| Kulcsszavak: | Agrokémia, Talajtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/76134 |
| Tartalmi kivonat: | Soil is an environment with a high degree of heterogeneity from the point of view of the content of nutritious elements and of the mobility and bioavailability of these elements for the crops. The studies and research on which the present paper relies aimed at assessing the level of fertility of the agricultural land in the Banat Plain area on which they practice conventional agricultural systems. Research was carried out at the Didactic Station of the Banat University of Agricultural Science and Veterinary Medicine in Timisoara (Romania), in the soil and climate conditions specific to the area of the Banat Plain. The soil within the Didactic Station is a cambic chernozem (cambic phaeozem), poorly gleyed, with a considerable share of the general area (about 85%). Climate conditions can be characterised through multiannual average values, the most important of which are: 603.3 mm precipitations and temperatures reaching 10.9°C. Agro-chemical parameters defining soil fertility and that were studied are: pH, humus content (H), nitrogen index (NI), total nitrogen (Nt), mobile phosphorus (PAL) and available potassium (KAL). The methods with which we determined the studied agro-chemical and fertility indicators are the current ones (colorimetry, atomic absorption spectrophotometry). In order to process the results, we used reference standards for each agro-chemical indicator we studied. Results were characterised within the context of land valorisation through crop rotation with no vegetable crops, which recommends certain reference values in the processing of the results. Soil reaction is within the neuter range, i.e. pH = 7.02. The relatively high degree of saturation in basic cations (V = 85-87%) ensures a good buffering for the pH. Soil stable organic matter content represented by humus has a medium level, i.e. H = 3.2, while the value of the nitrogen index (NI), as a representation of the interaction between H x V, is 2.72. Both values reflect medium soil fertility. The level of mobile phosphorus supply is 23.55 ppm, and the level of assailable potassium is 154.56 ppm. On the whole, among the agro-chemical indicators we studied, soil fertility has a medium level, which asks for fertilisation measures to ensure a high balance between soil and plants allowing high, constant agricultural crops. |
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| Terjedelem/Fizikai jellemzők: | 361-364 |
| ISSN: | 1788-5345 |