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001-es BibID:BIBFORM106329
Első szerző:Gebreyesus, Mehari
Cím:Assessment of measured and estimated meteorological data in terms of sorghum production on the example of Hamelmalo, Eritrea / Mehari Gebreyesus, Györgyi Kovács, Géza Tuba, Arzu Rivera-Garcia, József Zsembeli
Dátum:2022
Megjegyzések:Eritrea is exposed to climate variability and extreme events like drought and precipitation variability. Hamelmalo, a sub region in Eritrea, suffers from all the problems brought by climate change, especially because local people mainly depend on rainfed agriculture. I it is difficult to conduct climate related research activities for the region due to the shortage of meteorological data. However, in 2015, a new, complete meteorological station was established providing the chance of the first observations for practical and scientific purposes. The main objective of this study was to evaluate some climatic parameters from crop productional point of view by comparing the observed values with ones calculated by the Local Climate Estimator (LCE) model. Chi-square test was used to statistically analyse the differences. Based on the results, all the studied climatic parameters, except for precipitation, were almost on a par, which means there were no statistically significant differences between the observed and the estimated values. It can be concluded that the most variable climatic parameter in Hamelmalo is precipitation and this also affects the climatic water balance hence the need for irrigation if higher yields are wanted to be achieved. Sufficient water is vital in the mid-season and the late developmental stage of sorghum. Therefore, sowing time is advised to be adjusted to early July to ensure the maximum vegetative growth and seed setting period to be reached at the end of August in order to take the advantage of the positive climatic water balance of these two months.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
climate change
meteorological data
sorghum production
Eritrea
Megjelenés:Columella. - 9 : 1 (2022), p. 17-30. -
További szerzők:Kovács Györgyi (1980-) (környezetgazdálkodási agrármérnök) Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Rivera Garcia Arzu (1989-) Zsembeli József (1967-) (agrármérnök)
Internet cím:DOI
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2.

001-es BibID:BIBFORM094797
Első szerző:Gebreyesus, Mehari
Cím:Climatic water balance in Hamelmalo, Eritrea / Mehari Gebreyesus, Arzu Rivera Garcia, Géza Tuba, Györgyi Kovács, Lúcia Sinka, József Zsembeli
Dátum:2021
ISSN:1587-1282
Megjegyzések:Agricultural production is an important sector for peoples to live, but it is highly affected by climate change. To have a good production we need to understand the climatic parameters which adversely affect production. Hamelmalo, which is located in the semi-arid area of Eritrea, is vulnerable to climate change and this is realised in the total production loss. Nevertheless, there is no concrete reference about the climate of the region due to lack of data for a long time. Changes in precipitation (P), evapotranspiration (ET) and, implicitly, in the climatic water balance (CWB), are imminent effects of climate change. However, changes in the CWB, as a response to changes in P and ET, have not yet been analysed thoroughly enough in many parts of the world, including Eritrea. This study also explores the changes of the CWB in the Hamelmalo region, based on a wide range of climatic data (P, relative air humidity and evaporation pan necessary for computing potential evapotranspiration (PET) with the pan evaporation method) recorded at Hamelmalo from 2015?2019. This analysis shows that the annual cumulative CWB for Hamelmalo is negative in 67% of the years. The dry season without precipitation leads to negative CWB and the change in CWB only starts from the raining or crop season. Based on this recent study, 2015 had the highest PET and lowest P, and this resulted in the lowest CWB in the investigated period. Opposite to this, 2019 had lower PET and highest P, which led to the highest CWB. However, the monthly values of CWB did not correlate with the annual P or ET. On the base of our study, it can be concluded that PET and P were very variable in the investigated years and P was the most influential elements of CWB.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
climate change
water balance
precipitation
potential evapotranspiration
Megjelenés:Agrártudományi közlemények = Acta agraria Debreceniensis. - 1 (2021), p. 69-76. -
További szerzők:Rivera Garcia Arzu (1989-) Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Kovács Györgyi (1980-) (környezetgazdálkodási agrármérnök) Sinka Lúcia (1993-) (környezetgazdálkodási agrármérnök) Zsembeli József (1967-) (agrármérnök)
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DOI
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