Published in Scientific Papers. Series A. Agronomy, Vol. LXII, Issue 1
Written by Teodor RUSU, Bogdan Matei DUDA, Paula Ioana MORARU, Ileana BOGDAN, Lech Wojciech SZAJDAK, Adrian Ioan POP, Mihai Avram MAXIM, Ioan Aurel CHERECHEȘ
The agrotechnical characterization of lands from the Someșan Plateau targets the knowledge of their restrictions and limitations with the purpose to determine the needs and possibilities of ncreasing the production capacity, under the conditions of a durable agriculture. The purpose of the paper is the echnological characterization of lands and the specification of agrotechnical measures to set up durable agricultural echnologies, the determination of indices of characterization of rain aggressiveness (Fournier Index, Modified Fournier Index Angot Pluviometric Index), of the best sowing time and the amount of active biological temperatures, as well as th degree of water ensurance of plants during the vegetation period. Monitoring and variability of climate elements was achieved during 2014-2018, through a network of 10 HOBO microstations, which store soil temperature data lectronically (at 10, 30, 50 cm deep) and air (at 1 m hight), soil moisture (at 10 cm depth) and rain gauges. According to the values of the Fournier Index, 31.81% of the soils fit in low risk of rain erosivity. At the same time, the values of the Modified Fournier Index in most of the stations are between 90-120 and fit in a moderate rain risk of aggressiveness. he percentage analysis of the values of this index shows that 12.5% of the values crorespond to a low rain risk of ggressiveness, 58.33% of the values correspond to a moderate rain risk of aggressiveness and 29.16% of the values orrespond to a high rain risk of aggressiveness. From the percentage analysis of averages of monthly values of th Angot Index it results that 54.9% of the values are subunit and 45.1% of the values are over unity, indicating the act that drought intervals prevail over rain ones. The analysis of the best sowing time leads to the recommendation to aintain the reference intervals for the Someșan Playeau, thus: maize, 10-25 April; potato, 10-30 March; clover, 1-10 arch. An increase of the amount of active biological degrees and the need to remake the zoning of favorability onditions for certain crops, according to the new microclimate conditions of the area is registered. When it comes to the egree of water ensurance of plants during the vegetation period for the main crops, one can notice that during 014-2018, in the case of spring row crops, the water need was ensured during an optimal interval of 57.14% from the egetation period in the case of maize, of 53.49% in the case of potato, of 53.57% in the case of clover and of 47.67% in he case of wheat.
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