Hơn 800 người được tập huấn phòng trừ dịch bệnh trên cây cao su
(QT) - Theo thông tin từ Chi cục Bảo vệ thực vật (BVTV) tỉnh Quảng Trị cho biết, tính đến đầu tháng 5/2012 diện tích trồng cây cao su trong toàn tỉnh đạt 18.676,8 ha. Tuy nhiên, trong thời gian qua diện tích nhiễm bệnh phấn trắng và héo đen đầu lá trên cây cao su là 3.514 ha, trong đó bệnh phấn trắng là 2.261 ha, hại nặng 145 ha, bệnh héo đen đầu lá 1.253 ha, hại nặng 90 ha. Bệnh xảy ra trên tất cả các vùng trồng cao su trong tỉnh. Nguyên nhân gây bệnh do nguồn nấm bệnh tồn tại trên cây trồng, ...
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