-
Latest Symptoms and Control Methods of Lotus Root Brown Blight
Lotus root brown blight, named because after infection the lotus leaves show round to irregular chlorotic large yellow spots or brown necrotic spots, is also known as black spot disease or lotus leaf spot disease. Although it only damages the leaves, in severe cases it causes the entire leaf surface of the whole lotus field, except for the leaf veins, to be covered with lesions,
-
A Detailed Guide to the Latest Control Methods for Bacterial Brown Blotch Disease in Enoki Mushrooms
Enoki mushroom (Flammulina velutipes) is one of the common edible fungi in our daily lives, with high nutritional value and widely cultivated artificially. However, during cultivation, it is often affected by many diseases that harm the yield and quality of enoki mushrooms, and in severe cases cause total crop loss. Bacterial brown blotch disease is one of the common diseases of enoki mushroom.
-
What are the latest control methods for tobacco brown spot disease?
Tobacco brown spot disease is a disease caused by fungi. Tobacco farmers in China commonly call it red spot, root tiger eye, fire blister spot, etc. It is the main leaf spot disease during the tobacco leaf maturity period and occurs in all tobacco-growing areas in China. It not only makes tobacco leaves incomplete and lowers their grade, but also, due to uncoordinated internal quality, worsens the taste and reduces industrial use value. Now let us take a look at how to control tobacco brown spot disease!
-
A Detailed Guide to the Latest Control Methods for Corn Brown Spot
Corn brown spot is a corn disease that has occurred severely and spread rapidly in China in recent years, and in serious cases it can destroy the entire crop. It occurs in all corn-producing regions across the country, with the most severe damage in Hebei, Shandong, Henan, Anhui, Jiangsu and other provinces, mainly occurring on corn leaves
-
How to Prevent and Control Sunflower Brown Spot? A Detailed Guide to the Latest Methods
Brown spot is one of the diseases that commonly occur in sunflowers, one of the main diseases causing yield loss and empty seeds in sunflowers, and one of the main reasons affecting their yield. So how should sunflowers be protected against brown spot? Let's take a look together. 1. Symptoms
-
A Detailed Guide to the Latest Control Methods for Walnut Brown Spot Disease
Walnut brown spot disease mainly damages leaves and young shoots. In the early stage of leaf infection, grayish-brown round to irregular lesions appear, and later black dots form on the diseased parts. Severely affected leaves wither and scorch and drop early. After young shoots are infected, the lesions are dark brown, long oval, and slightly sunken.
-
In which regions of China are yellow-brown soils distributed, and what crops are suitable for growing there?
In which regions of China are yellow-brown soils distributed? What are they suitable for growing? To understand these two questions, we first need to clarify what yellow-brown soil is. Yellow-brown soil is a soil developed under subtropical evergreen broad-leaved and deciduous broad-leaved mixed forests. Its main characteristics are that the profile contains
-
Where in China is brown earth distributed, and what is it suitable for growing?
Brown earth is a widely distributed soil type in northern China and is an important forest and agricultural soil. So, where exactly in China is brown earth distributed? And what is it suitable for growing? Brown earth, also called brown forest soil, forms under warm-temperate deciduous broad-leaved forests and mixed coniferous-broad-leaved forests.
-
In which regions of our country are dark brown earth soils distributed, and what crops are suitable for planting there?
Dark brown earth is a zonal soil formed under a temperate humid monsoon climate and mixed coniferous-broadleaf forests, and is an independent soil type separated from brown forest soil after the founding of China. Total K content is 15.7-19.3, the profile configuration is O-AB-Bt-C, humus accumulates in the surface layer, and the entire profile shows a medium to slightly acidic reaction, with a base saturation of 60-80%. The clay and iron-manganese contents in the middle of the profile are both higher than those of the eluvial horizons above and below it. Dark brown earth is also known as dark brown forest soil, and was once called brown podzolic soil and gray-brown earth. It was not until 1960, after the first national soil survey, that it was formally established as dark brown forest soil, namely dark brown earth.
-
Where in China are brown calcic soils distributed, and what crops are suitable for growing there?
Brown calcic soil is an arid soil that forms a transition from chestnut soil in the temperate dry steppe zone to gray desert soil in the desert zone. Its formation is dominated by the humus accumulation process and calcic process of steppe soils, and it also has some characteristics of desert soil-forming processes. It has a thin humus loamy
条件筛选