Evaluating drought tolerance of potato genotypes at different growth stages using yield performance and tuber quality traits

Mthembu, Sizwe Goodman; Magwaza, Lembe Samukelo; Mditshwa, Asanda; Odindo, Alfred

doi:10.1016/j.scienta.2021.110689

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Reasonable water management practice during potato fertility is favorable to the formation of tuber yield and quality [7]. However, excessive water deficit during the seedling and fruiting stages severely damaged the rate of photosynthetic metabolism of the crop, reduced water and fertilizer use efficiency, and ultimately resulted in yield reduction [8]. The response to an optimal irrigation pa ern was mainly manifested in improving plant height and resource use efficiency, and increasing irrigation during the growing period slowed down crop senescence [9].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Irrigation and Fertilization to Simultaneously Improve Potato Tuber Yield, Water and Fertilizer Use Efficiency and Net Income in Northwest China

Zhang,

Chen,

Zheng

et al. 2024

Agronomy

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Irrigation, fertilization, and variety are important factors affecting potato production in northwest China. Field experiments (2021 and 2022) were performed to investigate the effects of irrigation and fertilization on the plant growth and soil microbial population of different potato varieties. Three irrigation levels were used, i.e., 100% ETc (W1), 80% ETc (W2), and 60% ETc (W3), with ETc standing for crop evapotranspiration. Three fertilization levels were used (N-P-K), i.e., 240-120-300 kg ha−1 (F1), 180-90-225 kg ha−1 (F2), and 120-60-150 kg ha−1 (F3). Three variety types were used, i.e., Feiurita (V1), Longshu 7 (V2), and Qingshu 9 (V3). These factors significantly influenced tuber yield (TY), net income (NI), and water productivity (WP). TY, NI, WP, total nitrogen accumulation (TNA), and nitrogen use efficiency (NUE) peaked at F2. Fertilization significantly impacted soil bacteria quantity (SBQ), fungi quantity (SFQ), and actinomycetes quantity (SAQ). TY, NI, SBQ, SFQ, and SAQ were highest at W2. Soil microbial population was strongly correlated with TY, NI, WP, TNA, and NUE. Comprehensively, this study suggests that irrigation that is varied from 248 to 266 mm, and fertilization (N-P-K) that is varied from 149.09-74.55-186.36 to 212.73-106.36-265.91 kg ha−1 can promote the potato industry’s sustainable development and provide important references for the optimal field management of potato cultivation in northwest China.

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Section: Introductionmentioning

confidence: 99%

Optimizing Irrigation and Fertilization to Simultaneously Improve Potato Tuber Yield, Water and Fertilizer Use Efficiency and Net Income in Northwest China

Zhang,

Chen,

Zheng

et al. 2024

Agronomy

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“…Compared with other crops, the potato plant is sensitive to water stress 6 , or very sensitive 7 , due to the shallow root system 85% of the root is localized in the upper 0.3-2024, 21 (5): 1483-1493 https://dx.doi.org/10.21123/bsj.2023.8002 P-ISSN: 2078-8665 -E-ISSN: 2411-7986 Baghdad Science Journal 0.4 m of the soil 8 . The tuber initiation is considered to be the most sensitive stage of moisture deficiency compared to the tuber growth stage 9 . The lack of water at this stage causes a delay in the emergence and swelling of the tubers and a decrease in the yield, size and quality of the resulting tubers 3 .…”

Section: Introductionmentioning

confidence: 99%

Effect of potassium humate spray on some biochemical characteristics in potato leaves Solanum tuberosum under water stress conditions

Hassan,

Suleiman,

Dais

2024

Baghdad Sci.J

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The research was carried out at Al-Hanadi Research Station - Lattakia Agricultural Scientific Research Center, during spring season 2020 .To experience the effect of different potassium humate levels 500,1000,1500 ppm as a foliar spray on potato leaves variety Spunta , at 40 and 80% of field capacity humidity . The research involved four treatments with 3 replicates at each irrigation level. A Completely Randomized design was used. Plants were sprayed with potassium humate HA three times, with an interval of ten days after 35 days of planting. The results showed that water stress caused an increase in total soluble sugars, proline content and catalase activity in Spunta potato leaves, but total chlorophyll content was decreased. Potassium humate treatments improved biochemical parameters at 40% of field capacity. Potassium humate 1000 ppm treatment increased significantly total chlorophyll content 0.142 mmol/mg, and total soluble sugars 1.67mg/g in Spunta leaves ,while 1500 ppm treatment increased significantly proline content 45.65 ppm and catalase activity 0.04 mg/g at the same level 40% . Also, at 80% of field capacity, potassium humate 1000 ppm increased the total chlorophyll content 0.140 mmol/mg and proline content in potato leaves 11.63 ppm. Thus, potassium humate can be applied at a concentration 1000 and 1500 ppm to enhance the efficiency of potato plant Spunta tolerance under water shortage conditions.

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Evaluating drought tolerance of potato genotypes at different growth stages using yield performance and tuber quality traits

Cited by 2 publications

References 22 publications

Optimizing Irrigation and Fertilization to Simultaneously Improve Potato Tuber Yield, Water and Fertilizer Use Efficiency and Net Income in Northwest China

Optimizing Irrigation and Fertilization to Simultaneously Improve Potato Tuber Yield, Water and Fertilizer Use Efficiency and Net Income in Northwest China

Effect of potassium humate spray on some biochemical characteristics in potato leaves Solanum tuberosum under water stress conditions

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