Journal of Food, Agriculture and Environment

Vol 5, Issue 3&4,2007
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Soil fertility management in North-East Romania


Gerard Jitareanu 1, Costica Ailincai 2, Daniel Bucur 1

Recieved Date: 2007-05-12, Accepted Date: 2007-08-05


The effect of different soil tillage systems on crop yield and soil chemical and physical characteristics were studied during 1985-2006. Experiments were established in split-split plots on a typical cambic chernozem of clay-loam texture, a mean humus content of 3.3%, a weakly acid reaction and a moderate level of mineral nutrients. Twenty-two years of ploughing to a depth of 20 cm resulted in settling of the soil at a depth of 19-27 cm; causing high bulk density (1.52 g/cm3), low porosity (43.3%) and a high degree of settling (16.4% of volume). In the case of chisel tillage, bulk density decreased from 1.41 to 1.33 g/cm3, settling degree was lower at 0.8% and hydraulic conductivity increased from 6.4 to 21.5 mm/hour at a depth of 40 cm. The mean wheat yield over the period, using 20 cm ploughing was 3690 kg/ha. Compared to 20 cm ploughing, using chisel ploughing and disks and also by repeated disking produced lower yields by 5.0% (-170 kg/ha) and 11.0% (-423 kg/ha), respectively. In maize, fertilizers were better utilized under conditions of deeper soil tillage (30 cm ploughing; chisel ploughing and disks) where yield increases varied with fertilizer rates from 98 to 131% (3940-5260 kg/ha). In soybean, mean yields using 20 cm ploughing and chisel ploughing and disk tillage were similar; in the case of chisel ploughing and disks, yield was higher by 12.0% (260 kg/ha) and with disks alone, yields were lower by 15.0% (336 kg/ha). The results indicate that soil tillage systems must be adjusted to plant requirements for crop rotation and to the pedoclimatic conditions of the area.


Soil tillage, crop rotation, mineral fertilizers, humus, nutrients, soil fertility, yield

Journal: Journal of Food, Agriculture and Environment
Year: 2007
Volume: 5
Issue: 3&4
Category: Environment
Pages: 349-353

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