-
How to prevent and control tomato gray leaf spot? Latest technical method tutorial
Tomato gray leaf spot occurs frequently in tomato production. It destroys the photosynthesis of leaves, reduces tomato yield, and brings huge losses to farmers. So how should tomato gray leaf spot be prevented and controlled? Let's learn about it together. 1. Disease symptoms
-
Causes and Control Methods of Gray Leaf Spot in Corn, Apple, Chinese Bayberry, Cowpea, and Soybean
Gray leaf spot, also known as brown spot, speckle disease, or frog-eye spot, is a worldwide disease. So what are the causes and control methods of gray leaf spot in corn, apple, Chinese bayberry, cowpea, and soybean? Let's take a detailed look below. I. Corn gray leaf spot 1. Sowing period in
-
How to prevent and control gray leaf spot when growing Isatis indigotica
Symptoms: On both sides of the leaves of affected Isatis indigotica, round lesions form, 2-6 cm in diameter, slightly sunken, grayish-white in the center, with brown edges. In the later stage, the lesions become thin and brittle, crack or perforate; when moist, a brown mold-like growth appears on them, which consists of the pathogen's conidiophores and conidia. Old
-
How to prevent and control soybean gray leaf spot? Understand the control methods in one article
Soybean gray leaf spot is a commonly occurring disease. In severe cases, it causes leaves to die off, leading to defoliation and reducing yield. 1) Symptoms: Gray leaf spot can occur throughout the entire growth period of soybean. It mainly damages soybean leaves. The lesions are round to elliptical or irregular in shape, with a diameter
条件筛选