The infleunce of soil tillage and fertilization on yield forming (crop structure) of Triticum durum L.
2002
Duplak, S. | Karabinova, M. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
The effects of different fertilization treatments and soil tillage methods together with meteorological conditions of year on forming the yield of grain in two cultivars of durum wheat (Vendur, Istrodur) were investigated within field polyfactor trials in the experimental centre of the Slovak Agricultural University at Dolna Malanta in 1999-2000. Four treatments of fertilization were ( A -unfertilized control, B - 8ON : 18P : 74K (172 kg NPK/ha), C-120N,18P,74K (212 kg NPK/ha, and D-120N,18P,74K (212 kg NPK/ha) - an amount of easily hydrolysable nitrogen present in the soil (at production fertilization) being considered in treatment D) and three methods of soil tillage were used ( Aploughed under stubble, B-without ploughed under stubble, C - disc harrow+tiller without ploughed under stubble-economy tillage). The trials were established on a small plot area using a method of divided blocks. Tillage and fertilization were highly significant sources of variability whilst year and a number of replications were found to be insignificant in both cultivars. The number of ears and of productive shoots per square m can be considered as a factor that influenced yield per area unit in both cultivars through the positive, highly significant correlation relationship. In the Vendur variety, fertilization had the high significant effect only on thousand-kernel weight, but in the Istrodur cultivar, it influenced highly significantly a weight of grain in ear and significantly a number of productive shoots, of ears and of grain per square m. As far as soil cultivation is concerned, in Vendur it influenced significantly only a weight of grain in ear and thousand-kernel weight. However, in Istrodur it exerted the high significant influence on a number of grain in ear, a weight of grain in ear, and thousand-kernel weight, and it also affected significantly a number of productive shoots, of years and of grain per square m
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