engleski

Relation of soil water deficit, involved by precipitation and corn yeald on Vinkovci area (eastern Croatia)

Regime of water and moisture of loessive, semigley and hydromeliorated soil during two years in the Vinkovci area (Eastern Croatia) was investigated. Instantaneous soil moisture content was measured per decades during vegetation in the layer of 0-30 and 30-60 cm in demolished sample condition and via metal cylinders after Kopecky. When we compared them (calibrating) satisfying coincidence was achieved in a field and subfield layer expressed by high correlation coefficients (R=0, 947**, R=0, 862* in the first and R=0, 933**, R=0, 986** in the second year) which confirms justification of soil sampling in demolished soil sample condition by means of earth auger. Instantaneous soil moisture content was compared in relation to corn yield. The highest deficiencies were recorded in July and August when the corn is in the pretasselling/tasselling phase as well as in maize grain formation phase. These water deficiency during vegetation od 142, 7 mm (June and July 131, 5 mm) on the average od 5.591 t ha-1. In the second total water deficits during vegetation were considerably lower and amounted to 93, 9 mm, which is significantly less than deficiencies monitored for many years’ period for this region with significantly higher average corn yield of 7.320 t ha-1.

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nije evidentirano