Two field experiments were conducted in the main seasons of 2021/22 at the farmers'farm in two districts of southwest Ethiopia to investigate the effects of lime and phosphorus on groundnut yield and yield compone...Two field experiments were conducted in the main seasons of 2021/22 at the farmers'farm in two districts of southwest Ethiopia to investigate the effects of lime and phosphorus on groundnut yield and yield components,employing four levels of lime(0,2,4,and 6 t CaCO_(3)ha^(-1))and phosphorus(0,46,69,and 92 kg P_(2)O_(5)ha^(-1))arranged in factorial RCBD design with three replications.Data on the yield and its components were collected and subjected to an ANOVA using SAS software.The result demonstrated that plant height,number of branches,canopy spread,and shelling percentage were affected significantly by liming while effective nodule number,total peg,matured pod,and pod yield of groundnut significantly influenced by the main factors and their interactions.The combined application of 4 t lime and 46 kg P_(2)O_(5)ha^(-1)resulted in the highest number of effective nodules(147.23 plant^(-1)),total pod(72.6 plant^(-1)),mature pod(62.4 plant^(-1)),pod yield(4.49 t ha^(-1)),oil content(50.6%)and protein content(33.1%)whereas the lowest values of these parameters were seen in plots where neither lime nor phosphorus was applied.Therefore,it is advised that groundnut growers in the study areas,and similar agroecologies,apply the combination of 4 t lime and 46 kg P_(2)O_(5)ha^(-1).展开更多
为探究锌锰硼配施对雪茄烟叶矿质元素含量变化及其与干物质积累间的关系,本试验以德雪1号为试材,设置叶面喷施7.5 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T1,666.7m^(2)用量,下同)、10 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T2)、10 g ZnSO...为探究锌锰硼配施对雪茄烟叶矿质元素含量变化及其与干物质积累间的关系,本试验以德雪1号为试材,设置叶面喷施7.5 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T1,666.7m^(2)用量,下同)、10 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T2)、10 g ZnSO_(4)+15 g MnSO_(4)+10 g硼砂(T3)、15 g ZnSO_(4)+15 g MnSO_(4)+10 g硼砂(T4)和清水(CK)共5个处理,研究其对雪茄烟矿质元素含量动态变化和干物质积累的影响,并分析全生育期内烟叶矿质元素间及其与干物质积累间的相关性。结果表明,生育期内,随着锌锰硼配施量的增加,雪茄烟叶Fe含量呈先降低后升高再降低趋势,其余10种元素含量和干物质积累量均呈先增加后降低趋势,尤以T2处理含量最佳,干物质积累量最大。随生育进程,不同处理叶片P、Ca、Zn、Fe含量先升后降,N、Na含量先降后升;K含量总体呈下降趋势,而Mg含量呈先升后降再升高并趋于平稳变化趋势;生育期内Cu、Mn、B含量呈波浪状变化。叶片中N与P、K元素间存在协同增效机制,Ca、Mn元素可促进Mg、Zn、B、Na的吸收;而Fe与Ca、Zn、Mn及B与Cu、Fe间存在拮抗作用。全生育期内叶片中P、Mg、Mn、Na含量与干物质积累量间存在显著或极显著正相关。综合来看,锌锰硼肥配施可促进雪茄烟叶矿质元素的吸收和积累,提高烟株干物质积累量,666.7m^(2)以10 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂配施效果最好。展开更多
基金Mattu University Research Affairs directorate and Mattu University Bedele Campus research coordination office for their administrative and financial support.
文摘Two field experiments were conducted in the main seasons of 2021/22 at the farmers'farm in two districts of southwest Ethiopia to investigate the effects of lime and phosphorus on groundnut yield and yield components,employing four levels of lime(0,2,4,and 6 t CaCO_(3)ha^(-1))and phosphorus(0,46,69,and 92 kg P_(2)O_(5)ha^(-1))arranged in factorial RCBD design with three replications.Data on the yield and its components were collected and subjected to an ANOVA using SAS software.The result demonstrated that plant height,number of branches,canopy spread,and shelling percentage were affected significantly by liming while effective nodule number,total peg,matured pod,and pod yield of groundnut significantly influenced by the main factors and their interactions.The combined application of 4 t lime and 46 kg P_(2)O_(5)ha^(-1)resulted in the highest number of effective nodules(147.23 plant^(-1)),total pod(72.6 plant^(-1)),mature pod(62.4 plant^(-1)),pod yield(4.49 t ha^(-1)),oil content(50.6%)and protein content(33.1%)whereas the lowest values of these parameters were seen in plots where neither lime nor phosphorus was applied.Therefore,it is advised that groundnut growers in the study areas,and similar agroecologies,apply the combination of 4 t lime and 46 kg P_(2)O_(5)ha^(-1).
文摘为探究锌锰硼配施对雪茄烟叶矿质元素含量变化及其与干物质积累间的关系,本试验以德雪1号为试材,设置叶面喷施7.5 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T1,666.7m^(2)用量,下同)、10 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂(T2)、10 g ZnSO_(4)+15 g MnSO_(4)+10 g硼砂(T3)、15 g ZnSO_(4)+15 g MnSO_(4)+10 g硼砂(T4)和清水(CK)共5个处理,研究其对雪茄烟矿质元素含量动态变化和干物质积累的影响,并分析全生育期内烟叶矿质元素间及其与干物质积累间的相关性。结果表明,生育期内,随着锌锰硼配施量的增加,雪茄烟叶Fe含量呈先降低后升高再降低趋势,其余10种元素含量和干物质积累量均呈先增加后降低趋势,尤以T2处理含量最佳,干物质积累量最大。随生育进程,不同处理叶片P、Ca、Zn、Fe含量先升后降,N、Na含量先降后升;K含量总体呈下降趋势,而Mg含量呈先升后降再升高并趋于平稳变化趋势;生育期内Cu、Mn、B含量呈波浪状变化。叶片中N与P、K元素间存在协同增效机制,Ca、Mn元素可促进Mg、Zn、B、Na的吸收;而Fe与Ca、Zn、Mn及B与Cu、Fe间存在拮抗作用。全生育期内叶片中P、Mg、Mn、Na含量与干物质积累量间存在显著或极显著正相关。综合来看,锌锰硼肥配施可促进雪茄烟叶矿质元素的吸收和积累,提高烟株干物质积累量,666.7m^(2)以10 g ZnSO_(4)+10 g MnSO_(4)+7.5 g硼砂配施效果最好。