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Yield and Growth of Common Bean (Phaseolus vulgaris L.) Varieties as Influenced by Lime and Phosphorus Under Acid Soil Toxicity of South Western Ethiopia
Tolossa Ameyu,
Yechalew Sileshi,
Mesfin Hailemariam
Issue:
Volume 9, Issue 4, December 2020
Pages:
103-110
Received:
23 November 2020
Accepted:
4 December 2020
Published:
11 December 2020
Abstract: Acidic soils limit the productive potential of crops because of low availability of basic cations and excess of hydrogen and aluminium in exchangeable forms. At the study area, soil acidity is a well-known problem limiting crop productivity. Therefore, this study was conducted to identify common bean variety that tolerate acid soil or low pH soil. Fifteen (15) common bean variety were grown in split plot design under four soil amendments (limed alone, phosphorus alone, both lime and phosphorus treated, and no any amendment) with three replications at three locations in Western and South Western Ethiopia. Data on growth and yield were collected and analyzed using SAS version 9.3 software. Treatment means were compared at 5% level of significance using List significant Different. The results revealed that variety X amendments X locations X seasons interactions were significant (p<0.01) for both grain yield and plant height. Availability of varietal difference among common bean varieties under both amended and unamended acid soil conditions was observed. The highest grain yield (1.043 t/ha) under control soil conditions obtained from this result is still below the national average (1.59t/ha), but more than the national average under lime and phosphorus treated plots (1.989t/ha), which shows that the selected variety is responded to lime and phosphorus than tolerant to acid soil. SER 119 variety is selected for those farmers who have the capacity to apply lime with phosphorus based on the yield performance at both locations and also this variety is included in the future work of further selection trials. However, further study is required including considering additional genotypes, at least for three or four years to determine the residual effect of phosphorus and lime to reach at a conclusive recommendation.
Abstract: Acidic soils limit the productive potential of crops because of low availability of basic cations and excess of hydrogen and aluminium in exchangeable forms. At the study area, soil acidity is a well-known problem limiting crop productivity. Therefore, this study was conducted to identify common bean variety that tolerate acid soil or low pH soil. ...
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Fine Single Sand Body Characterization of Hulangmao Chang 6 Reservoir in Jing'an Oilfield
Yan Yunbiao,
Zhang Jinxin,
Pang Yuxin,
Li Cunlei,
Yu Bo,
Zhou Yigang,
Tang Shiqi
Issue:
Volume 9, Issue 4, December 2020
Pages:
111-119
Received:
16 November 2020
Accepted:
4 December 2020
Published:
11 December 2020
Abstract: The Chang 6 reservoir in Hulangmao area is a lithologic reservoir controlled by Zhidan Jingbian delta depositional system in Northern Shanxi Province. The oil reservoir has entered the middle-high-water-cut stage. The reservoir is characterized by low porosity and low permeability, with strong heterogeneity and great development difficulty. Therefore, it is necessary to further study the distribution of remaining oil through fine single sand body division and correlation，so as to improve the level of the reservoir development. Based on the theory of high-resolution sequence stratigraphy, according to the characteristics of mudstone marker bed and logging combinations, the sedimentary cycles are studied by using the techniques of maximum entropy spectrum and wavelet transform, and the cycle characteristics of different levels are clarified. Chang 6 member is divided into 3 fourth-level cycles, 6 fifth-level cycles (small levels), 13 sixth-order cycles (single level), and 21 seventh-order cycles (single sand body). Based on the stratigraphic correlation analysis model of sand body equal thickness, channel down-cutting, lateral phase transformation and splitting of superimposed sand body, and combined with the core and logging characteristics of the target area, the correlation framework of single sand layer in the whole area is established.
Abstract: The Chang 6 reservoir in Hulangmao area is a lithologic reservoir controlled by Zhidan Jingbian delta depositional system in Northern Shanxi Province. The oil reservoir has entered the middle-high-water-cut stage. The reservoir is characterized by low porosity and low permeability, with strong heterogeneity and great development difficulty. Therefo...
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The Role of Honeybee (Apis mellifera) Pollination in Enhancing Seed Yield and Yield Related Parameters of Coriandrum sativum L
Bekele Tesfaye,
Temaro Gelgelu,
Wondimu Lelisa
Issue:
Volume 9, Issue 4, December 2020
Pages:
120-124
Received:
17 November 2020
Accepted:
27 November 2020
Published:
22 December 2020
Abstract: Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbplant. It is an open pollinated crop and honeybees are effective pollinators for open pollinated crops because of a lot of nectar and pollens are available on the flowers of Coriandrum sativum. An experiment was conducted to evaluate the effect of honeybees pollination on Coriandrum sativum seed yield and yield related parameters at Sinana Agricultural Research center at on-station. The study had three experiment; these includes plots caged with honeybees (T1), plots caged without honeybees (T2) and open pollinated plots (T3). All collected data were analyzed using One-way-Analysis of Variance (ANOVA). There were no significant different (P>0.05) on Date of blooming, Date of flowering,, Primary and secondary branches among the three treatments. Whereas, there were a significant difference (P<0.05) on Flowering period, shading time, Number of capsule, Thousand kernel weight and total seed yield per hector. The result also revealed that about 29.70% of seed yield advantage of Coriandrum sativum pollinated by honeybees over control/un pollinated by any insect. From this result it was concluded that visits of honeybees at flowering time of Coriandrum sativum have very helpful in increasing seed yield and yield related components of this crop.
Abstract: Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbplant. It is an open pollinated crop and honeybees are effective pollinators for open pollinated crops because of a lot of nectar and pollens are available on the flowers of Coriandrum sativum. An experiment was conducted to evaluate the effect of honeybee...
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The South African FMCGs Use of Green Initiatives to Maintain Competitiveness and Sustainability Under the Global Coronavirus Pandemic
Issue:
Volume 9, Issue 4, December 2020
Pages:
125-134
Received:
21 November 2020
Accepted:
4 December 2020
Published:
28 December 2020
Abstract: The adoption of supply chain management (SCM) strategy by enterprises since mid-1980s has immensely transformed the flow of products/services from supply side to the ultimate customers on the demand side. The era has also experienced innovations in technology which has continued to fast track the implementation of supply chain efficiency and effectiveness. The unfolding implementation of the fourth industrial revolution (4IR) is hoped to spike the supply chain response time and render them more resilient and competitive. The study explored how fast moving consumer goods (FMCGs) suppliers and traders, utilised green initiatives or green supply chain management (GSCM), under the ravaging global Coronavirus pandemic to retain competitiveness and sustainability. The study was grounded in the theory of sustainable development and the sustainability theory in business. An exploratory qualitative research methodology and constructivism paradigm were used and non-probability sampling process applied. The participants were senior managers of FMCGs suppliers and traders who were interviewed telephonically, as it was during the partial lockdown period to control the spread of Coronavirus in countries around the globe including South Africa. The local and international supply chain networks were covered in the interviews as these organisations also traded in imported goods. The interviews were recoded, transcribed, coded and analysed via content analysis. The study outcome indicated that GSCM improved cost-effectiveness as enterprises were more resilient and used technology intensively to enhance information and product flow in the supply chain network that spiked the turnover and margins. The transportation optimisation saved costs and reverse logistics reduced waste and increased efficiency which enhanced competitiveness and sustainability. The supply chain resilience mitigated the disruption from Coronavirus pandemic.
Abstract: The adoption of supply chain management (SCM) strategy by enterprises since mid-1980s has immensely transformed the flow of products/services from supply side to the ultimate customers on the demand side. The era has also experienced innovations in technology which has continued to fast track the implementation of supply chain efficiency and effect...
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