70 million mu‑times! In Zhejiang Province, major pests and diseases are generally showing a tendency toward severe outbreaks.

Release Date:

2019-02-18

In 2019, Zhejiang Province anticipates that major pests and diseases affecting grain and oilseed crops will generally occur at a relatively severe level, with an affected area of approximately 70 million mu‑times, and insect pests expected to be more prevalent than diseases. Specifically, wheat and rapeseed are projected to experience moderate pest and disease pressure, with wheat affected over about 1.5 million mu‑times and rapeseed over about 3 million mu‑times; rice is expected to face relatively severe pest and disease outbreaks, covering roughly 65 million mu‑times. Major pest and disease trend forecasts: (1) Fusarium head blight: Expected to occur at a moderate level, with localized areas experiencing heavier infestations. (2) Wheat aphids: Projected to occur at a moderate level. (3) Wheat leafhoppers: Forecasted to occur at a moderately mild level.

　　In 2019, Zhejiang Province is expected to experience a generally severe outbreak of major pests and diseases affecting grain and oilseed crops, with an affected area of approximately 70 million mu‑times, and pest infestations posing a greater threat than disease outbreaks. Among these, Wheat and the major diseases and pests of rapeseed are occurring at moderate levels, Wheat The area affected by pests and diseases was approximately 1.5 million mu‑times, with oilseed rape accounting for about 3 million mu‑times; in rice, major pests and diseases occurred at a relatively severe level, affecting roughly 65 million mu‑times.

　　Major Pest and Disease Forecast

　　(1) Gibberella head blight: Expected to occur at a moderate level, with localized areas experiencing heavier infestations.

　　(2) Cereal aphids: Moderate occurrence is expected.

　　(3) Wheat and cereal planthoppers: A moderate-to-light infestation is expected.

　　(4) Sclerotinia stem rot of rapeseed: Expected to occur at a moderate level.

　　(5) Downy mildew of rapeseed: Expected to occur at a moderate level, with localized areas experiencing heavier infestations.

　　(6) Rapeseed aphids: Expected to occur at a moderate to light level.

　　(7) Rice planthoppers: Moderate incidence is expected, with the white-backed planthopper at a moderate level and the brown planthopper at a moderate level, locally reaching a heavier-than-average level; the gray planthopper will occur at a light level during the panicle‑filling stage.

　　(8) Rice leafroller: Expected to occur at a moderate level, with localized areas experiencing heavier infestations.

　　(9) Rice stem borers: The second-generation stem borer is the predominant species, with significant regional variation in incidence. It is forecast to occur at moderate-to-heavy levels in the first generation, with localized severe outbreaks, while subsequent generations are expected to be at moderate levels, with localized heavy infestations.

　　(10) Sheath blight: Expected to occur at a moderate-to-heavy level.

　　(11) Rice false smut: Expected to occur at a moderate level; under favorable climatic conditions during susceptible growth stages, a severe recurrence cannot be ruled out.

　　(12) Rice blast: A moderate incidence is expected; under favorable weather conditions, panicle blast may become epidemic in susceptible varieties in mountainous and semi-mountainous areas, as well as in regions with a history of the disease.

　　(13) Bacterial diseases of rice: Bacterial diseases such as bacterial leaf blight are gradually spreading from the coastal rice-growing regions to the Jinhua–Quzhou rice‑growing area, with an expanding geographic range. Frequent typhoons and heavy rainfall can exacerbate the severity of these outbreaks.

Source: Zhejiang Provincial Plant Protection and Quarantine Station Author: Zhejiang Provincial Plant Protection and Quarantine Station Editor: xwbj3

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