Efecto del sistema de labranza sobre el rendimiento y la calidad del grano de trigo pan en la zona semiárida central templada de La Pampa (original) (raw)

In the present study the effects of three tillage systems: conventional (CT), vertical (VT) and direct drilling (DD) on three bread wheat varieties of different cycle length, were studied, for yield and yield components. Their influence on grain quality, expressed through thousand kernel weight (TKW, g), test weight (TW, kg/hL), grain protein content (GPC, %) and yellowberry percentage (YBP, %) were also studied. The highest average yield was under CT and DD, while the lowest was under VT. The lowest dry matter accumulation and one third fewer spikes per unit area were determined under VT. Concerning grain quality, a comparatively higher TKW was observed under DD although it showed lower grain protein levels and a higher proportion of YBP. Among varieties, the most consistent grain yield pattern corresponded to the longest cycle material. The largest response to tillage treatments was exhibited by the highest yield potential, middle length cycle variety. Under CT this variety could ...