Soil loss through sheet erosion under various systems of biomass incorporation and crop combination in an alley cropping system
2004
Asaduzzaman, S.M. (Bangladesh Agricultural Research Inst., Gazipur 1701 (Bangladesh). On-Farm Research Div.)
To assess soil loss through sheet erosion, pattern of biomass incorporation and crop combination were tested in an alley cropping system. Three treatments of biomass incorporation were used in the main plot and the same number of crop combination treatments were also tested in the subplots. A split-plot in randomized complete block design was laid out with three replications. Biomass incorporation consisted of three treatments: B1 sup 1 (application in the upper one-third portion of the alleyways), B1 sup 2 (biomass application in the upper two-thirds portion of the alleyways) and B1 sup 3 (biomass application throughout the alleyways which served as the control). On the other hand, the three crop combination treatments consisted of: CC sup 1 (corn as pure stand or sole crop as control), CC sup 2 (corn + sweetpotato) and CC sup 3 (corn + peanut) which were placed in the three subplots of each main plot. The study was done during the wet season of 1999 and the dry season of 1999-2000. Sheet erosion was not statistically significant among the treatments during the wet season but erosion in the downslope varied significantly during the dry season. In the dry season, the maximum sheet erosion due to biomass incorporation was observed in B1 sup 2 (1.40 kg/sq m) and the minimum sheet erosion in B1 sup 3 (1.24 kg/sq m). In the same season, the maximum sheet erosion due to crop combination was observed in CC sup 1 (1.39 kg/sq m) and the minimum erosion in CC sup 2 (1.29 kg/sq m). Soil loss (erosion) due to interaction effect of biomass incorporation and crop combination was significant only in the upslope during the wet season and in the midslope and downslope only during the dry season
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por University of the Philippines at Los Baños