leaf blast Learn more about leaf blast
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Rice blast affects rice quality how to control rice blast
Rice blast affects rice quality how to control rice blast
2018-07-14 -
What is rice leaf blast? How to prevent and cure it?
The blast that occurs on rice leaves is called leaf blast. The control of rice leaf blast should run through the whole growth period of rice, because leaf blast can occur in the whole growth period, and the damage is more serious from tillering to jointing stage, and the epidemic of leaf blast directly affects the normal growth of rice.
2020-11-09 Rice leaf blast what is it should how control blast disease -
Rice disease
1. Rice blast (1) damage characteristics: Rice blast, also known as rice fever, commonly known as fire blast, hanging head blast, neck-choking blast and so on, is one of the most popular and harmful fungal diseases in the world, which mainly harms the aboveground part of the host plant. Due to the different damage period and position, it can be divided into seedling blast, leaf blast, ear neck blast, branch blast, grain blast and so on. The host range is many kinds of Gramineae plants, such as rice, wheat, horse tang and so on. Magnaporthe grisea overwintered mainly on diseased rice straw and was infected in rice field in the second year. The spread of bacteria mainly depends on the wind.
2019-01-16 -
Common Rice Diseases and their Control
In the whole growth period of rice, the common diseases are rice blast, bacterial leaf spot, bacterial blight, sheath blight, rice false smut and so on. The main results are as follows: (1) Rice blast can occur from seedling to heading. According to the symptoms of the disease in different growth stages and different parts, rice blast can be divided into seedling rice blast, leaf rice blast, node rice blast, panicle rice blast and grain rice blast. 1. The main symptoms (1) seedling rice blast: the diseased seedlings turn gray-black at the base of the stem near the soil surface, and the upper part is reddish brown, which makes the whole seedling curl and die. (2) Leaf rice blast:
2019-01-16 -
What is rice leaf blast? How to prevent and cure?
What is rice leaf blast? How to prevent and cure? Rice leaf blast is a common disease, farmers should pay attention to careful identification. The disease occurs on the leaves of seedlings or adult plants after the three-leaf stage, generally from tillering to jointing stage, and the disease spots on the leaves are often due to weather and quality.
2020-11-08 Rice leaf blast what is how control rice -
Occurrence and Control of main Rice Diseases and pests in Gejiu City
1. Rice planthopper 1. damage characteristics: Rice planthopper, also known as white mosquito, is a migratory pest with the characteristics of long-distance migration and outbreak. The common ones are gray planthopper and white-backed planthopper. It occurs in the rice area of the city, mainly harming rice, followed by wheat and corn, but also parasitic on grass and other Gramineae weeds. The adults and nymphs clustered to suck the sap on the base and leaves of the rice clump, and the injured part showed a long brown spot. In severe cases, the lower stem blackened and the whole plant withered. 2. Living habits: there are 4 generations in a year, from the end of April to the beginning of May.
2019-01-16 -
The latest course of techniques and methods for Prevention and Control of Rice blast in Rice planting
Rice blast is mainly divided into leaf blast and panicle and neck blast, is one of the important rice diseases, can cause a substantial reduction in yield, serious yield reduction of 40% to 50%, or even no grain harvest. 20% tricyclazole wettable powder 100 g / m mu or 75% tricyclazole wettable powder for prevention and control of leaf rice blast
2020-11-10 The latest rice planting rice blast control technology methods tutorials -
Occurrence and control of rice blast and rice planthopper
First, the occurrence of rice blast: Rice leaf blast has appeared in Helan, Qingtongxia and other places. The initial period is June 13, about 10 days earlier than last year. Especially after the rainfall on July 7 and 12, the humidity in the field is relatively high, which is very beneficial to the development of leaf blast. The average rate of disease fields in the recent general survey of Qingtongxia is 16.7%.
2018-09-13 -
How to control rice panicle blast? When is the best time to apply? How to judge?
According to the recent field monitoring results of rice blast rural monitoring networks in Heilongjiang Province, combined with comprehensive analysis of rice planting varieties, resistance, field growth, cultivation management and meteorological conditions, it is predicted that there is a risk of recurrence of rice panicle blast in Heilongjiang Province this year. that
2020-11-09 water rice panicle neck blast how control best application time yes -
Control techniques of "two Diseases and three pests" in Rice
Rice two diseases and three insects refer to rice blast, sheath blight, rice stem borer, rice planthopper and rice red spot black foam cicada, which do great harm to rice and should be prevented and controlled. Rice blast is caused by long-term irrigation of deep water or excessive drought and partial application of nitrogen fertilizer. There are three susceptible stages in rice life, namely, seedling stage, heading stage and heading stage. Panicle neck blast has the greatest effect on rice yield, which should be prevented as early as possible at break stage and full heading stage. Rice blast is divided into seedling blast, leaf blast, node blast, panicle blast and grain blast. Rice blast
2019-01-16 -
The latest control of common diseases in rice
1. Rice blast, also known as rice fever, can be divided into seedling blast, leaf blast, ear neck blast, branch blast, grain blast and so on. Seedling plague: the base is gray-black, the upper part turns brown, curls up and dies, and a large number of gray-black mildew layers are produced in the disease part when the humidity is high.
2020-11-10 The latest rice common disease control rice blast also known as rice -
Occurrence and control of rice diseases and insect pests in recent years
Since July, our city has encountered continuous overcast rain and high temperature weather after rain, which is very beneficial to the occurrence of diseases and insect pests in the late stage of rice. At present, most of the rice in our city enters the booting stage to heading stage, which is the susceptible period of rice diseases and insect pests. On August 7, our station conducted field investigation in Tangdian, Datun and other places. Rice blast, sheath blight and Cnaphalocrocis medinalis all occurred and needed urgent control. The specific conditions are as follows: Rice blast: leaf blast was found on Yunhui 290 planted in Datun Xintile-house, with a diseased leaf rate of 3.6% and a disease index of 0.75, covering an area of 2 mu. sheath blight
2019-01-16 -
Banana blast caused by common diseases of canna
Canna, the new favorite of green belt, is easy to catch banana blast in the case of improper conservation and management. it is not a big problem to find early treatment. If you delay the disease and give up treatment, it will not only affect the landscape value, but also consume a sum of money. So what should the canna do when it is infected with banana blast?
2018-07-01 -
What are the common diseases of rice in cash crops? What kind of medicine should I take? How to prevent and cure it?
Rice is not only a kind of herbaceous rice, but also the most important and oldest kind of grain in rice. It belongs to direct cash crops. What are the common diseases of rice? What kind of medicine should I take? How to prevent and cure it? Let's learn more about it. During the whole growth period of rice
2020-11-09 Cash crops rice common diseases there which what -
Control of common diseases in rice
Control of common diseases in rice
2018-07-01 -
At present, rice mainly attacks diseases in Guangdong.
Rice bacterial streak, rice blast, sheath blight and bacterial blight are four main diseases in late rice production in Guangdong, which mainly damage plant leaves in the early and middle stages of rice growth. There are many typhoon rice areas along the coast of our province, while rice blast and bacterial leaf spot are the main damage in hills and mountainous areas. In this paper, the occurrence period, characteristics and control methods of bacterial leaf spot, rice blast and sheath blight are briefly described as follows: bacterial leaf streak of rice has a tendency to spread in Guangdong in recent years. The disease begins in seedling stage and flourishes in young panicle differentiation stage. Station
2019-01-16 -
How to control the three major diseases of rice?
How to control the three major diseases of rice? Please introduce the control methods of the three major rice diseases can refer to the following methods for control: 1. Rice blast (1) Leaf blast: dark green, nearly round or oval spot, followed by a slight tip at both ends; usually when there are acute spots or disease centers, especially when nitrogen fertilizer is applied.
2018-07-18 -
Classification standard and control method of rice blast
Grading standard leaf plague: 1 sporadic occurrence, careful investigation can see the disease 2 slightly more, the disease leaves concentrated in the lower 3 widespread, the disease leaves concentrated in the middle and lower 4 more serious, the disease leaves concentrated in the middle and upper, a small amount of pond 5 serious, there are obvious pond...
2018-09-13 -
Prevention and control techniques of rice blast in rice planting
Prevention and control techniques of rice blast in rice planting
2018-07-01 -
A specific drug for rice leaf rollers and heart worms.
In the process of rice planting, there are often some diseases and insect pests. Leaf rollers and drillworms are two of the most harmful pests. What are the specific drugs of rice leaf rollers and heart worms? I. the specific drug of rice leaf rollers, the control of rice leaf rollers.
2020-11-08 Rice roll leaf worm drillworm of specific medicine rice planting