Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (5): 1102-1112.DOI: 10.3969/j.issn.1004-1524.20230448

• Environmental Science • Previous Articles     Next Articles

Effects of two nematicide treatments on soil nematode community and soil properties in Chinese yam field

FAN Linjuan1(), WU Caiyun1, XU Xueliang1, LIU Zirong1, YAO Jian1, KANG Hongbo2, HU Pinghua2, YAO Yingjuan1,*()   

  1. 1. Institute of Agricultural Applied Microbiology, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
    2. Comprehensive Law Enforcement Team of Tangzhou Town, Taihe County, Ji’an City, Jiangxi Province, Taihe 343715, Jiangxi, China
  • Received:2023-04-04 Online:2024-05-25 Published:2024-05-29

Abstract:

To investigate the effect of 10% fosthizate granule (GR)+6% oligosaccharide·fosthiazate emulsion in water (EW) (CP1 for short) and 42% metam-sodium aqueous solutions (AS) (CP2 for short) on the soil ecological environment in Chinese yam field, nematode classification methods and conventional soil analysis methods were adopted to study the effect of the above treatments on soil nematode community and soil properties in the Chinese yam field cultivated by directional shallow trough method (DS) and traditional method (TR), respectively. The result showed that, compared with the blank control (CK), these two treatments did not significantly impact the soil moisture content, pH value, organic matter content, yet significantly (P<0.05) increased the available potassium content in the 0-20 cm layer of the soil cultivated by DS and reduced the available potassium content in the>20-40 cm layer of the soil cultivated by TR. Compared with the CK, CP1 treatment had no significant impact on the proportion of bacterivores and herbivores. However, it significantly reduced the relative abundance of Pratylenchus, which was harmful for the Chinese yam production, and increased the relative abundance of Rhabditis and Acrobeloides, which were beneficial for the Chinese yam production in the 0-20,>20-40 cm layer of the soil cultivated by TR. CP2 treatment not only significantly reduced the relative abundance of Pratylenchus in the 0-20 cm layer of the soil cultivated by DS and the 0-20,>20-40 cm layer of the soil cultivated by TR, but also significantly increased the relative abundance of Rhabditis and Acrobeloides in the 0-20,>20-40 cm layer of the soil cultivated by TR than those of the CK. Besides, CP2 treatment significantly reduced the value of PPI/MI (ratio of plant parasite index to maturity index) in the 0-20 cm layer of the soil cultivated by TR, yet increased the Shannon diversity index, Pielou evenness index, Wasilewsha index and nematode maturity index. In summary, the comprehensive application effect of 42% metam-sodium AS was better than that of 10% fosthizate GR+6% oligosaccharide·fosthiazate EW for the perspective of soil nematode. Under the present experiment conditions, the two treatments would not cause adverse effects on the soil ecological environment, which are suitable for promotion in Chinese yam field.

Key words: Chinese yam, soil nematode, soil physiochemical properties, nematicide, cultivation method

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