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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (12): 116-122.doi: 10.11924/j.issn.1000-6850.casb2022-0379

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Effect of Urea Phosphate Fertilizer on Soil Borne Diseases of Potato

LIU Xia1,2(), HUANG Xun1,2, XU Gaihuan1,2, YANG Yanli1,2()   

  1. 1 College of Plant Protection, Yunnan Agricultural University, Kunming 650201
    2 Key Laboratory of Plant Pathology of Yunnan, Kunming 650201
  • Received:2022-05-08 Revised:2022-06-29 Online:2023-04-25 Published:2023-04-21

Abstract:

The study aims to explore the effects of urea phosphate fertilizer of different concentrations on the occurrence of potato scab and powdery scab, so as to provide a new idea for the prevention and control of potato soil borne diseases. In this experiment, five urea phosphate fertilizer treatments were set in the mixed soil and bacterial matrix, including P2O5 (CK), P2O5 43 kg/hm2 (T1), P2O5 86 kg/hm2 (T2), P2O5 172 kg/hm2 (T3), and P2O5 344 kg/hm2 (T4). The occurrence of diseases was investigated at harvest, and the effects of urea phosphate fertilizer on the occurrence of the two diseases were analyzed. The results showed that the application of urea phosphate fertilizer 6.8 g/plant in mixed soil and 3.4 g/plant in bacterial matrix could effectively reduce the occurrence of potato scab, while the application of urea phosphate fertilizer in mixed soil and bacterial matrix had no effect on the occurrence of powdery scab.

Key words: urea phosphate fertilizer, potato scab, powdery scab, mixed soil, bacterial matrix