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首页> 外文期刊>African Journal of Biotechnology >Assessment of compost for suppression of Fusarium oxysporum and improving Zea mays and Hibiscus sabdarriffa resistance to wilt diseases
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Assessment of compost for suppression of Fusarium oxysporum and improving Zea mays and Hibiscus sabdarriffa resistance to wilt diseases

机译：评估堆肥抑制尖孢镰刀菌和提高玉米和玉米芙蓉对枯萎病的抵抗力

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The present research?was?conducted to evaluate the compost effectiveness on?Zea mays?and?Hibiscus sabdarriffa?under?Fusarium?wilt disease. Compost physical, chemical and biological characters were monitored weekly during the ripening process. Both coliform and nematode were tested. Finally, the effect of compost on pathogenicFusarium?was examined within?Z. mays?and?H. sabdarriffa?in soil amended with 10% compost. Biochemical tests and antioxidant enzyme activities were determined for all the treated plants. The values of organic carbon recorded a percentage of 3.8%, while nitrogen (N), phosphorus (P) and potassium (K) values recorded 1.7, 4.6 and 5.6% higher than the commercial compost. The concentrations of nickel (Ni), copper (Cu), zinc (Zn), manganese (Mn), cobalt (Co), cadmium (Cd) and lead (Pb) in compost were below the threshold standard values. The compost is free of nematodes and coliform bacteria at maturity stage. Microbial population densities were usually high for?Bacillus sp.compared to other microorganisms. In infected?Z mays?with compost, shoot height, fresh and dry weight increased significantly (62, 248 and 130%) and?H.?sabdarriffa?also recorded increase in the same plant criteria. In infected?Z. mays, a significant increase in catalase (CAT) and ascorbate peroxidase (APX) activities was recorded (162 and 150%). For?H.?sabdarriffa?there was a significant decrease in APX activity (35%) with compost, while no significant differences in peroxidases (PODs) activity for both plants. In case of infection, a significant decrease was observed for both?Z. mays?and?H.sabdarriffa?compared to infected plants without compost. The observed disease suppression in compost-amended soil was associated with the reduction in soil pathogen population and increase in microbial activity of composts. Moreover, diversification of different organic materials in compost enhanced the activation of the microbial population in soil that eventually increases disease suppressiveness and effectively controlling?Fusarium?wilt.
机译：进行了本研究以评价在枯萎病下玉米（Zea mays）和芙蓉（Shibidarriffa）堆肥的有效性。在成熟过程中，每周对堆肥的物理，化学和生物学特性进行监测。大肠菌和线虫均经过测试。最后，在？Z以内检查了堆肥对致病性Fusarium？的影响。可能吗？土壤中的sabdarriffa？用10％的堆肥改良。确定了所有处理过的植物的生化测试和抗氧化酶活性。有机碳的含量为3.8％，而氮（N），磷（P）和钾（K）的含量分别比商品堆肥高1.7、4.6和5.6％。堆肥中镍（Ni），铜（Cu），锌（Zn），锰（Mn），钴（Co），镉（Cd）和铅（Pb）的浓度低于阈值标准值。堆肥在成熟阶段不含线虫和大肠菌。与其他微生物相比，芽孢杆菌属的微生物种群密度通常很高。在带有堆肥的被感染的“ Z Mays”中，苗高，鲜重和干重显着增加（62％，248％和130％），而“ H.sabdarriffa”在相同的植物标准下也有所增加。在感染？可能，过氧化氢酶（CAT）和抗坏血酸过氧化物酶（APX）活性显着增加（162和150％）。对于堆肥H.sabdarriffa，APX活性显着降低（35％），而两种植物的过氧化物酶（PODs）活性均无显着差异。在感染的情况下，两个ΔZ均显着下降。与没有堆肥的受感染植物相比，梅斯和沙伯达菲可比。在堆肥改良土壤中观察到的疾病抑制与土壤病原菌种群减少和堆肥微生物活性增加相关。此外，堆肥中不同有机物质的多样化增强了土壤中微生物种群的活化，最终增强了疾病抑制能力并有效控制了枯萎病。

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