Effects of tillage on bulk density and soil moisture content in wheat-fallow rotation under dry conditions

Scientific Research and Essays

Nosrat Allah Heidarpur¹ 

关键词:  ;    Bulk density;    dry conditions;    soil moisture;    tillage.;   

DOI  :  10.5897/SRE11.280

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

In the arid and semi arid region of Iran, conventional tillage is mainly used(Moldboard plowing followed by two disc harrowing) for wheat production. Such a tillage system requires a high energy input and may also cause water loss and long-term soil physical degradation. This field study was conducted under dry conditions to determine whether or not the reduced tillage systems altered the bulk density and soil moisture content.Thus, five tillage treatments (T1-moldboard plow + disc harrowas the conventional method,T2-chisel plow + disc harrow, T3- moldboard plow without inversion page + disk harrow, T4- power harrow, and T5- sweep plow + disk harrow) were studied during the three year period (2004 to 2007) in soils with silty clay loam texture. Soil moisture in four depths (0-10, 10-20, 20-30 and 30-40 cm) was measured at the flowering and grain filling stages. Generally,the lowest soil bulk density was obtained by T1treatment.There were significant differences among tillage methods for soil moisture at the flowering stage (P < 0.05) andT1treatment had thehighestvalue.There were no significant differences among soil tillage methods for soil moisture at the grain filling stage. Overall, chisel plow + disc harrowtreatment wasrecognized as the best tillage methoddue to the remainsofstoredsoilsatthegrain fillingstage.

【 授权许可】

CC BY