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Phenotypic Performance Evaluation of Improved Tef (Eragrostis tef L) Genotypes in North Gondar

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DOI: 10.18488/journal.68.2020.71.1.5

Melle Tilahun Tagele , Tesfaye Jorgi

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Melle Tilahun Tagele , Tesfaye Jorgi (2020). Phenotypic Performance Evaluation of Improved Tef (Eragrostis tef L) Genotypes in North Gondar. Current Research in Agricultural Sciences, 7(1): 1-5. DOI: 10.18488/journal.68.2020.71.1.5
Ten improved tef varieties including the local check were evaluated with the objective of selecting adaptable and best performing tef varieties in North Gondar. The trial was conducted at Takusa and Gondar Zuria woredas of north Gondar zone of Amhara region during 2017 cropping season. The design was randomized complete block design with three replications. In Takusa, the mean grain yield of some improved varieties was higher than the local check. Varieties Dz-01-974 and Quncho gave the highest yield, (3226kg/ha) and (2944.3kg/ha) respectively. Similarly in Gondar Zuria woreda, some improved varieties were relatively better than the local check and variety Dz-01-974 and Quncho gave the highest yield (2449.3kg/ha) and (2084kg/ha) respectively. The yield in Gondar Zuria was relatively lower than Takusa woreda. This may be due to the fact that Gondar Zuria woreda is characterized by terminal moisture stress. Generally the combined analysis over location revealed that varieties Dz-01-974 and Quncho gave the highest yield and no significant difference observed among varieties in their maturity period and relatively higher yield. Therefore Dz-01-974 and Quncho were recommended for their high yielding potential and farmer’s preference with their production packages. These two varieties were recommended for production in Gondar Zuria, Takusa and similar agro ecologies.
Contribution/ Originality
This work investigates the impact of genotype choice for climate change adaptation and for farmers resilient to climate variability.

Penman and Thornwait Equations for Estimating Reference Evapotranspiration Under Semi-Arid Environment

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DOI: 10.18488/journal.68.2020.71.6.14

Muhammad Hafeez , Allah Bakhsh , Abdul Basit , Zia Ahmad Chattha , Alamgir Akhtar Khan , Muhammad Adnan Majeed , Fatima Tahira

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Muhammad Hafeez , Allah Bakhsh , Abdul Basit , Zia Ahmad Chattha , Alamgir Akhtar Khan , Muhammad Adnan Majeed , Fatima Tahira (2020). Penman and Thornwait Equations for Estimating Reference Evapotranspiration Under Semi-Arid Environment. Current Research in Agricultural Sciences, 7(1): 6-14. DOI: 10.18488/journal.68.2020.71.6.14
The estimation of reference evapotranspiration (ETo) is required for effective development and management of agriculture water systems. In order to define the most accurate method to estimate ETo in semi-arid climatic environment of Faisalabad, Lahore and Peshawar. Penman and Thornwait ETo methods are compared with standard Penman-Monteith (PM) ETo method. The statistical results show that Penman ETo method overestimates PM ETo method in all the semi-arid climatic regions of Faisalabad, Lahore and Peshawar by 34.91%, 39.51% and 30.75%, respectively. The R2 were 0.98, 0.98 and 0.99 at Faisalabad, Lahore and Peshawar weather stations, respectively. The RMSE were 2.47 mm/day, 2.64 mm/day and 2.19 mm/day at Faisalabad, Lahore and Peshawar weather station, respectively. The MBE of -2.41 mm/day, -2.58 mm/day and -2.13 mm/day were noted at Faisalabad, Lahore and Peshawar weather stations, respectively. The statistical result of Thornwait (Th) ETo method as compared with PM ETo method indicates underestimation of ETo in winter season and overestimation of ETo in summer season by 13.81%, 22.43% and 14.54% at Faisalabad, Lahore and Peshawar stations, respectively. The R2 of 0.92, 0.89 and 0.95 were noted at Faisalabad, Lahore and Peshawar weather stations, respectively. The RMSE were 2.14 mm/day, 2.36 mm/day and 1.16 mm/day at Faisalabad, Lahore and Peshawar weather stations, respectively. The MBE were -0.68 mm/day, -1.12 mm/day and 0.61 mm/day at Faisalabad, Lahore and Peshawar weather stations, respectively. Overall, Thornwait method gave better estimation of ETo than Penman ETo method at all the weather stations.
Contribution/ Originality
The main objective of this research is to compare the performance of Penman and Thornwait ETo methods against standard PM ETo method under semi-arid climatic conditions of Lahore, Faisalabad and Peshawar, Pakistan.

Estimating Reference Evapotranspiration by Hargreaves and Blaney-Criddle Methods in Humid Subtropical Conditions

Pages: 15-22
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Estimating Reference Evapotranspiration by Hargreaves and Blaney-Criddle Methods in Humid Subtropical Conditions

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DOI: 10.18488/journal.68.2020.71.15.22

Muhammad Hafeez , Zia Ahmad Chatha , Alamgir Akhtar Khan , Allah Bakhsh , Abdul Basit , Fatima Tahira

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Muhammad Hafeez , Zia Ahmad Chatha , Alamgir Akhtar Khan , Allah Bakhsh , Abdul Basit , Fatima Tahira (2020). Estimating Reference Evapotranspiration by Hargreaves and Blaney-Criddle Methods in Humid Subtropical Conditions. Current Research in Agricultural Sciences, 7(1): 15-22. DOI: 10.18488/journal.68.2020.71.15.22
Various methods are available to predict reference evapotranspiration (ETo) but the Penman-Monteith (PM) ETo method has been considered to be the most accurate ETo method to determine ETo. The PM ETo method can be solved by various weather parameters like atmospheric temperature, wind velocity, moisture content and net solar radiations. There are many weather stations in the world that have no complete set of weather parameters to predict ETo by applying PM ETo method. So alternative ETo methods like Hargreaves (HG) and Blaney-Criddle (BC) ETo methods are used which need only a fewer number of weather parameters. In this paper, two ETo methods, HG and BC are compared with PM ETo method in humid subtropical climatic conditions of Islamabad and Kakul (Abbottabad) weather stations. The study indicate that HG ETo method overestimated PM ETo method by 23.78% at Islamabad weather station and 28.47% at Kakul station. The BC ETo method overestimated PM ETo method by 37.93% at Islamabad weather station and by 22.68% at Kakul weather station. The dissimilarity of HG ETo method with PM ETo method with RMSE was 1.09 mm/day at Islamabad weather station and 1.17 mm/day at Kakul weather station. The dissimilarity of BC ETo method with PM ETo method has Root Mean Square Error (RMSE) of 2.86 mm/day at Islamabad weather station and 1.48 mm/day at Kakul weather station.
Contribution/ Originality
The objective of this investigation is to compare ETo by HG and BC ETo methods with PM ETo method in humid subtropical climatic conditions of Pakistan.

Rural Population Perceptions on Anti-Silting Managements in Kebili Governorate, South Tunisia

Pages: 23-30
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Rural Population Perceptions on Anti-Silting Managements in Kebili Governorate, South Tunisia

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DOI: 10.18488/journal.68.2020.71.23.30

Anissa Gara , Saber Trabelsi , Jamel Kailene , Najeh Dali

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Anissa Gara , Saber Trabelsi , Jamel Kailene , Najeh Dali (2020). Rural Population Perceptions on Anti-Silting Managements in Kebili Governorate, South Tunisia. Current Research in Agricultural Sciences, 7(1): 23-30. DOI: 10.18488/journal.68.2020.71.23.30
Lambin [1] affirmed that the definition of desertification used by the Convention to Combat Desertification (CCD) makes it clear that, whilst biophysical components of ecosystems and their properties are involved (e.g., soil erosion, loss of vegetation), the interpretation of change as 'loss' is dependent upon the integration of these components within the context of the socioeconomic activities of human beings. The CCD's definition of desertification explicitly focuses on the linkages between humans and their environments that affect human welfare in arid and semi-arid regions. In Tunisia as in many regions of the world, desertification and silting are an adversity to economic development and environment. This study aims to bring out population perceptions determinants about this scourge on the governorate of Kebili, located at the south of Tunisia. Several efforts have been made by the administration since the 1980s to combat silting. We conducted this research with the view to study population’s perceptions towards realized management against silting and desertification. We need to know the factors that make these managements not evenly successful at all the governorate zones. Therefore, we conducted a socio-economic survey: among the population with concern to examine the reaction of the inhabitants towards these anti-silting structures and strategies.
Contribution/ Originality
This study contributes in the existing literature about how Tunisia faced silting scourge by biological and mechanical techniques. This study has investigated on population opinion about these techniques. These techniques were successful and maintained by population in some zones while in other zones population was reluctant and removed them.

Variations in Vitamin Composition of Four Accessions of Dialium guineense (L.) Fruit Pulp

Pages: 31-39
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Variations in Vitamin Composition of Four Accessions of Dialium guineense (L.) Fruit Pulp

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DOI: 10.18488/journal.68.2020.71.31.39

Awotedu, B.F. , Awotedu, O. L. , Ogunbamowo, P. O. , Chukwudebe E. P. , Ariwoola, O. S.

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Awotedu, B.F. , Awotedu, O. L. , Ogunbamowo, P. O. , Chukwudebe E. P. , Ariwoola, O. S. (2020). Variations in Vitamin Composition of Four Accessions of Dialium guineense (L.) Fruit Pulp. Current Research in Agricultural Sciences, 7(1): 31-39. DOI: 10.18488/journal.68.2020.71.31.39
Dialium guineense is an important medicinal plant used in fighting diverse diseases because of the presence of vitamin c it contains. This study is aimed at varying the vitamin composition of Dialium guineense fruit pulp obtained from four accessions from different geopolitical locations (South-West, South-South, South-East, North-Central) in Nigeria. Different vitamins were considered which includes; Vitamin A, Vitamin B12, Vitamin C and Vitamin E. The vitamin composition of D. guineense fruit pulp were done according to the standard biochemical method. The result obtained for all the four accessions shows varying quantities in the vitamins investigated. Vitamin C has the highest amount in varying quantities with the trend: North-Central (Abuja) ? South-South (Edo) ? South-West (Oyo) ? South-East (Abia), while Vitamin A: North-Central (Abuja) ? South-West (Oyo) ? South-South (Edo) ? South-East (Abia), Vitamin B12: South-West (Oyo) ? North-Central (Abuja) ? South-South (Edo) ? South-East (Abia), and Vitamin E: South-South (Edo) ? South-West (Oyo) ? North-Central (Abuja) ? South-East (Abia). These accessions of D. guineense were high in Vitamin C, followed by Vitamin A, then Vitamin E, and Vitamin B12. The presence of all these vitamins are good indices that D. guineense is a very rich nutritional and medicinal plant with high potentials of vitamin content considering different accessions.
Contribution/ Originality
The paper’s primary contribution is finding how provenance/accession could alter the genetic make-up and vitamin composition of Dialium guineense. Since vitamin C is the main components of Dialium fruits, the experiment is set up to investigate how provenance could affect the different vitamin composition of Dialium fruit.