Impact of Climate Change on Potato Yield (Solanum tuberosum L.) At Mekelle Areas, in Northern Ethiopia (original) (raw)
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Sensitivity of Potato Yield to Climate Change
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Low soil fertility and climate change-induced low soil moisture are major problems constraining potato (Solanum tuberosum L.) production in the eastern highlands of Ethiopia. Climate events are projected to become more pervasive. Therefore, research was conducted with the objective of analyzing smallholder potato farmers’ adaptation strategies to cope with the issues of low soil fertility and low soil moisture that are exacerbated by climate change. The research involved surveying eight purposively selected peasant associations in four major potato-producing districts in east and west Hararghe zones. The survey employed a multistage sampling procedure. Data were collected from 357 households using a standard questionnaire, focus group discussions, and key informant interviews. The data were analyzed using descriptive statistics, index ranking, and analysis of variance for survey data. The observed climate data for the period of 1988 to 2017 were analyzed. The Mann-Kendall trend test...
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Impact of Climate Change on Water Requirements and The Productivity on Potato Crop
Egyptian Journal of Horticulture
el-Khaimah, Qalyubiah Governorate. The aim of the current investigation was to study the impact of three planting dates (18-Dec, 7-Jan and 27-Jan), three irrigation levels at 60, 80 and 100% of irrigation water requirements (IR) and their interaction on potato crop productivity. 9 treatments were obtained by combination of different planting dates and irrigation levels. Planting dates were arranged as the main plots, while, irrigation levels were arranged in the sub plots, The obtained results indicated that the highest tuber yield was obtained by the first planting date (18 Dec.) during both studied seasons, While, The highest plant growth parameters and tuber yield per plant were obtained by 100% followed by 80% irrigation level during both seasons. However, the interaction effectindicated that first planting date (18-Dec) combined with 100 % irrigation level gave the highest potato tuber productivity than the other treatments, whereas the interaction of first planting date 18-(Dec) combined with 80% irrigation level gave the best for water use efficiency compared to the other treatments during both tested seasons.
Journal of Biology, Agriculture and Healthcare, 2019
Potato (Solanum tuberosum L.) is considered as the high potential food security crop and a major instrument for poverty alleviation in Ethiopia. However, it is most vulnerable to climate change due to its exact climatic requirement for various physiological processes. There are many indicators of environmental stresses including climate change, especially global warming, are severely affecting potato growth and productivity worldwide. The changing climate will affect the potato production adversely due to drought ,salinity,frost,flooding, erratic unseasonal rains ,surface temperature, increase in CO 2 fertilization, but decreases after some extent. Besides, anthropogenic activities such as CO 2 may increase crop yields due to increased CO 2 , CH 4 and CFC’s are contributing to the global warming. Under changing climatic situations crop failures, longer growing season, shortage of yields, reduction in quality, influence the pest and disease occurrences, host-pathogen interactions,...
WATER REQUIREMENTS FOR POTATO PRODUCTION UNDER CLIMATE CHANGE
In support of research to predict the impact of climate change on reference evapotranspiration (ETo) in Egypt, this study investigates the projected changes in evapotranspiration in Egypt, with a focus on the Delta, Middle and Upper Egypt. The maximum and minimum temperature were statistically downscaled and compared with a current climate, defined as the period 1971–2000. FAO-56 Penman-Monteith equation was used to estimate ETo by using the climatic data. Evapotranspiration is estimated based on the predicted maximum and minimum using the RCPs scenarios (RCP3.0 – RCP4.5 – RCP6.0 and RCP8.5) during three time series (2011-2040, 2041-2070 and 2071-2100). The obtained results revealed that the maximum and minimum air temperatures were increased under all RCPs scenarios compared to current data. Moreover, the RCP8.5 had the highest maximum and minimum air temperature compared to the other RCPs scenarios. It was found that for all future periods the annual evapotranspiration will increase for the all agro-meteorological zones by uneven values. The main results in this study revealed that ETo significant increase in different tested time series compared to current ETo values. The values of ETo in long term (2071-2100) were higher than short (2011-2040) or mid-term (2041-2070) with respect to the current situation. The highest ETo values was predicted in this study by RCP8.5 during the 2071 – 2100 time series in the Upper Egypt region. The estimation of water requirements for potato crops in different agro-climatic zone show that winter season had the highest cultivated area with potato followed by summer season. Upper Egypt region has the lowest cultivated area of potato during different cultivation season. Total water requirements (WR) for potato during the different cultivating seasons revealed that WR will increase under all scenarios in comparison with the current conditions. The highest water use efficiency was recorded in the Upper Egypt climatic zone during the winter season at 2012. Winter season gave the highest water use efficiency under (WUE) current and future conditions. Moreover, all RCPs scenarios had lower WUE than the current conditions during different time series. Regardless of the seasons, the RCP8.5 gave the lowest WUE in comparison with the other RCPs scenarios
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Potato is the most important non-cereal crop in the world and the most prominent winter season crop in India. Growth and yield of potato crop is very much sensitive to higher temperatures and the moisture stress. Hence, the anticipated increase of temperature due to global warming and climatic variability will have anadverse impact on potato production. Keeping this in view, a research work was carried out with the objectives to assess the impact of climate change on potato production and evaluating agronomic adaptation options through a crop growth simulation model (CGSM). Field experiments were carried out to prepare the minimum dataset for calibration and validation of one CGSM, namely InfoCrop. After validation, the model was used to predict the future tuber yield of ten selected stations situated under different agroclimatic regions of the State. In the future scenario 2050, the simulated yield for mid November planted crop likely to be about 11% less than the present level of ...
Assessment of potato response to climate change and adaptation strategies
Scientia Horticulturae, 2018
This study was conducted to simulate the climate change impacts on potato production and evaluate the planting date and variety management as possible climate change adaptation strategies in Isfahan province, Iran. Two types of General Circulation Models (HadCM3 and IPCM4) and three scenarios (A1B, A2 and B1) were employed. Daily climatic parameters were generated by Long Ashton Research Station-Weather Generator (LARS − WG). The SUBSTOR-Potato model was used to simulate the baseline and future potato growth and development. Results indicated that LARS-WG and SUBSTOR-Potato had an appropriate accuracy to simulate climatic and growth parameters of potato. Simulated results showed that the maximum leaf area index (LAI), days to tuber initiation (DTTI), days to harvest (DTH) and fresh tuber yield of evaluated variety will be declined as affected by future climate change. Based on the simulation results, delayed planting date (31 May) would increase tuber yield under future climatic conditions. In the contrary, early planting (30 April) would accelerate harmful effects of climate change on potato yield. The medium and early maturing varieties showed a better tuber yield under climate change conditions than common (delayed maturing) variety. In essence, early maturing variety and delayed planting date are reported as the most efficient agronomical approaches for mitigating harmful effects of climate change and proposed to be considered in designing and managing potato ecosystems of the region for future climatic conditions. Generally, our results highlight the importance of considering early maturing variety and delayed planting date as the efficient agronomical approaches for mitigating harmful effects of climate change on potato production.
Impact assessment of climate change on potato.pdf
Potato tuber yield were simulated at Jorhat, Assam under various Representative Concentration Pathways (RCPs) scenarios for 2020, 2050 and 2080 using DSSAT SUBSTOR-Potato model. The model was calibrated and validated for three potato cultivars, viz., Kufri Jyoti, Kufri Pokhraj and Kufri Himalini with the experimental data collected during 2014-15 and 2015-16. Results revealed that if planting is delayed beyond November, all these cultivars are likely to record drastic reduction in tuber yield. Cultivar Kufri Himalini may incur tuber yield loss of 64 per cent in 2020 to 75 per cent in 2080, followed by Kufri Jyoti (57.6% in 2020 to 71.5% in 2080) and Kufri Pokhraj (45.2% in 2020 to 56.2% in 2080). Among the cultivars, Kufri Pokhraj may remain a viable cultivar up to 2050, but Kufri Himalini may lose its sustainability by 2020 itself. Hence, adjustment of planting time and development of improved adaptive potato cultivars only will ascertain future potato production in this region.
Assessment of AquaCrop Model on Potato Water Requirements in Climate Change Conditions
2018
Potato is the most important non-grain crop in the world. Produced in a traditional way (without irrigation) in Bosnia and Herzegovina averages about 370 000 tons per year. Climate change will probably affect potato crop production, especially due to shallow rooting system. The aim of this paper is to assess the impact of climate change on the potato water requirements for the IPCC RCP 8.5 scenario. AquaCrop V6.0 model was used to estimate potato irrigation norms (In), drainage water and yield. Three distinct area were analyzed; Banja Luka, Bijeljina and Mostar. Climate data were obtained from a climate change simulation of a regional climate model NMMB. The simulation is done as a dynamical downscaling of the global model CMCC-CM over the Southeast Europe. Models are forced with IPCC RCP8.5 scenario. Four periods were analyzed; the reference period (1971-2000) and three time slices in the future:). Obtained results in three future periods were compared with referenced ones, and shown as a relative ratio. Sowing dates will be moved towards winter months in all areas. Such results will have an impact on yield increment in rainfed conditions up to 85%. Obtained data showed decrement of the In in Banja Luka and Mostar area up to 18% and 25% through the century, respectively. However, drier conditions in Bjeljina region will affect yield decline. In increment with magnitude of 70% to 34% will be expected in Bjeljina area due to lower precipitation. Thus makes irrigation very important in order to achieve genetic potential of potato. Drainage system should be implemented and/or well maintained in all areas.