Effect of Chemical and Biological Control Components in Protecting Potatoes from Infection with Early Blight Disease Caused by Alternaria solani and its Impact on Growth and Yield

Arab Journal for Plant Protection Pub Date : 2022-01-01 DOI:10.22268/ajpp-40.4.325333

Elissar Shaabo

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Abstract

Shaabo, A., N. Deeb, M. Mufleh, R. Zaydan, A. Haj Hasan, L. Adra, A. Askriyeh and N. Sakkour. 2022. Effect of Chemical and Biological Control Components in Protecting Potatoes from Infection with Early Blight Disease Caused by Alternaria solani and its Impact on Growth and Yield. Arab Journal of Plant Protection, 40(4): 325-333. https://doi.org/10.22268/AJPP-40.4.325333 This study was carried out at Alsonawbar Station of the Agricultural Scientific Research Center in Lattakia, Syria during the spring of 2021 to evaluate the effect of different treatments for the control of potato early blight disease, and their effect on plant growth and potato yield and quality. Six treatments were evaluated: two chemical pesticides: Ranman 20% SC (cyazofamid), Moximate 50% WP (cymoxanil + mancozeb), three biological pesticides Bacillus subtilis, Beauveria bassiana and Trichoderma harizianum, in addition to the control. Results showed that Ranman treatment was superior, as it led to reduction of 20.18 and 5.61 % in disease severity and infection rate, respectively, two weeks after treatment, with a decrease of 25.80 and 20.46 %, respectively, compared to the control. With the same treatment, the leaf area and leaf area index reached 8438.75 cm2 /plant and 3.45 m2 /m2 , respectively, with an increase of 4827.75 cm2 /plant, and 1.97 m2 /m2 over the control treatment. Results also showed the superiority of Bacillus subtilis treatment in terms of tubers number, tubers weight, yield, and the proportion of marketable yield which reached 8.16 tuber/plant, 93.47 g/tuber, 3126.94 kg/donum, 95.30% marketable yield, respectively, which represented a reduction rate of 20.09%, 30.99%, 42.31%, 9.72%, respectively, over the control treatment. In addition, results showed that the highest dry matter and starch content was obtained in response to the chemical pesticides treatments. Key words: Alternaria solani, potato, chemical control, biological control, production

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化学和生物防治成分对马铃薯早疫病的防治效果及其对生长和产量的影响

Shaabo, A.， N. Deeb, M. Mufleh, R. Zaydan, A. Haj Hasan, L. Adra, A. Askriyeh和N. Sakkour. 2022。化学和生物防治成分对马铃薯早疫病的防治效果及其对生长和产量的影响植物保护学报，40(4):325-333。https://doi.org/10.22268/AJPP-40.4.325333本研究于2021年春季在叙利亚拉塔基亚农业科学研究中心的Alsonawbar站进行，以评估不同处理对马铃薯早疫病的控制效果，以及它们对植物生长和马铃薯产量和品质的影响。在对照的基础上，选用化学农药Ranman 20% SC(氰唑菊)、Moximate 50% WP (cymoxanil + mancozeb)和3种生物农药枯草芽孢杆菌、球孢白僵菌和黑僵木霉。结果显示，Ranman治疗效果较好，治疗2周后病情严重程度和感染率分别降低20.18%和5.61%，较对照组分别降低25.80%和20.46%。在相同处理下，叶面积和叶面积指数分别达到8438.75 cm2 /株和3.45 cm2 /m2，比对照处理分别增加4827.75 cm2 /株和1.97 m2 /m2。结果表明，枯草芽孢杆菌处理在块茎数量、块茎重量、产量和商品率方面均具有优势，分别达到8.16根/株、93.47 g/根、3126.94 kg/株、95.30%的商品率，分别比对照降低20.09%、30.99%、42.31%、9.72%。此外，化学农药处理的干物质和淀粉含量最高。关键词:茄疫病，马铃薯，化学防治，生物防治，生产

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Arab Journal for Plant Protection

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