Phân Bón Nông Xanh về phòng bệnh trên cây trồngĐào Nguyên NguyễnPhân Bón Nông Xanh về phòng bệnh trên cây trồng, các bệnh thường gặp trên cây tiêu, các bệnh thường gặp trên cây cà phê. bên cây tiêu điên
Bacterial and viral diseases of riceDelince SamuelThis document summarizes several bacterial and viral diseases that affect rice, including bacterial leaf blight, bacterial leaf streak, rice tungro disease, rice grassy stunt, rice ragged stunt, and rice yellow mottling. It describes the pathogens, symptoms, favorable conditions, and management strategies for each disease. The key points are that bacterial leaf blight is caused by Xanthomonas oryzae pv oryzae, rice tungro disease is caused by two viruses and transmitted by green leafhoppers, and management involves using resistant varieties, controlling insect vectors, and destroying weed hosts.
Bacterial blight of RiceLakhveer SinghBacterial blight is a serious disease of rice caused by the bacteria Xanthomonas oryzae. It causes wilting of seedlings and yellowing and drying of leaves. Bacterial blight is one of the most important rice diseases, and can cause up to 70% yield loss in susceptible varieties. Symptoms include yellow water-soaked lesions on leaves that develop whitish or grayish stripes and wavy margins. Management of the disease involves planting resistant varieties, maintaining good soil nutrition and drainage, removing weed and rice residue hosts, and allowing fields to dry.
Diseases in riceLove SharmaThis document discusses several diseases that affect rice, including leaf blast, node blast, neck blast, sheath blight, sheath rot, false smut, brown spot, bacterial leaf blight, and tungro. Leaf blast causes eye shaped spots on leaves that spread from lower to upper leaves, killing the leaves. Node blast causes black patches on infected rice nodes. Neck blast causes greyish brown lesions on the neck that can cause grains to fall. Sheath blight causes irregular purple brown lesions on leaf sheaths. Sheath rot causes irregular chocolate brown spots on leaf sheaths. False smut causes yellowish soft balls to form on grains. Brown spot causes circular reddish brown lesions on leaves surrounded by a
Pests of paddy 1prasanna kumarThis document provides information on major insect pests that affect rice crops in India. It identifies 20 insect pests of economic significance classified into borer pests, sucking pests, defoliators, and non-insect pests. Details are given on the identification, life cycle, nature of damage, and symptoms caused by key borer pests like the yellow stem borer, leaf folder, and caseworm. Important sucking pests discussed include various leafhoppers and brown plant hopper. Defoliators like the paddy leaf roller and caterpillars are also outlined. The document concludes with factors that contribute to major pests reaching economic thresholds.
Insect pest of riceagriyouthnepal1. Rice is an important staple crop for over 60% of the world's population. Major insect pests of rice in Nepal include the brown plant hopper, yellow rice stem borer, and rice ear-head bug.
2. These pests cause around 25-30% yield losses annually. The brown planthopper sucks plant cell sap and transmits diseases. The yellow stem borer bores into rice stems, causing 'dead hearts' and 'white heads'. The rice ear-head bug feeds on developing rice grains, reducing yield.
3. Management strategies include growing resistant varieties, applying recommended pesticides at economic thresholds, and cultural practices like removing rice residue and maintaining good field drainage.
Plant diseasesCVVMMK DhavejiMicroorganisms like bacteria, viruses, fungi and protozoa can cause plant diseases. The study of plant diseases is called plant pathology. Pathogens are the microorganisms that cause diseases, and they can spread from infected to healthy plants through contact, water droplets, or vectors. Common plant diseases include rice leaf blight caused by bacteria, rice blast caused by fungi, wheat rust caused by fungi, red rot of sugarcane caused by fungi, and tikka disease of groundnut caused by fungi. Managing diseases involves using resistant varieties, treating seeds, removing infected plants, and applying fungicides.
Power point presentation plant diseasesroshni17890This document discusses several common plant diseases, their causes, symptoms, and prevention methods. It describes diseases that affect coconut (bud rot and root wilt caused by bacteria), paddy (blight disease caused by bacteria), rubber (decay disease caused by fungus), pepper (quick wilt caused by fungus), and plantain (bunchy top disease caused by a banana bunchy top virus spread by aphids). The concluding paragraphs emphasize that plant disease management aims to reduce economic and aesthetic damage by applying our growing scientific understanding of pathogen-host interactions and developing control measures tailored to specific diseases.
Common rice diseases (am sinohin)macky75The document discusses several common rice diseases found in the Philippines, including their symptoms, causal organisms, and management options. Sheath blight, rice blast, sheath rot, bakanae, brown spot, narrow brown spot, bacterial leaf blight, bacterial leaf streak, and rice tungro are described. The diseases can be managed through host plant resistance, cultural practices like fertilization and water management, and fungicide or pesticide application when needed. Correct diagnosis of diseases is important for effective management.
Phân Bón Nông Xanh về phòng bệnh trên cây trồngĐào Nguyên NguyễnPhân Bón Nông Xanh về phòng bệnh trên cây trồng, các bệnh thường gặp trên cây tiêu, các bệnh thường gặp trên cây cà phê. bên cây tiêu điên
Bacterial and viral diseases of riceDelince SamuelThis document summarizes several bacterial and viral diseases that affect rice, including bacterial leaf blight, bacterial leaf streak, rice tungro disease, rice grassy stunt, rice ragged stunt, and rice yellow mottling. It describes the pathogens, symptoms, favorable conditions, and management strategies for each disease. The key points are that bacterial leaf blight is caused by Xanthomonas oryzae pv oryzae, rice tungro disease is caused by two viruses and transmitted by green leafhoppers, and management involves using resistant varieties, controlling insect vectors, and destroying weed hosts.
Bacterial blight of RiceLakhveer SinghBacterial blight is a serious disease of rice caused by the bacteria Xanthomonas oryzae. It causes wilting of seedlings and yellowing and drying of leaves. Bacterial blight is one of the most important rice diseases, and can cause up to 70% yield loss in susceptible varieties. Symptoms include yellow water-soaked lesions on leaves that develop whitish or grayish stripes and wavy margins. Management of the disease involves planting resistant varieties, maintaining good soil nutrition and drainage, removing weed and rice residue hosts, and allowing fields to dry.
Diseases in riceLove SharmaThis document discusses several diseases that affect rice, including leaf blast, node blast, neck blast, sheath blight, sheath rot, false smut, brown spot, bacterial leaf blight, and tungro. Leaf blast causes eye shaped spots on leaves that spread from lower to upper leaves, killing the leaves. Node blast causes black patches on infected rice nodes. Neck blast causes greyish brown lesions on the neck that can cause grains to fall. Sheath blight causes irregular purple brown lesions on leaf sheaths. Sheath rot causes irregular chocolate brown spots on leaf sheaths. False smut causes yellowish soft balls to form on grains. Brown spot causes circular reddish brown lesions on leaves surrounded by a
Pests of paddy 1prasanna kumarThis document provides information on major insect pests that affect rice crops in India. It identifies 20 insect pests of economic significance classified into borer pests, sucking pests, defoliators, and non-insect pests. Details are given on the identification, life cycle, nature of damage, and symptoms caused by key borer pests like the yellow stem borer, leaf folder, and caseworm. Important sucking pests discussed include various leafhoppers and brown plant hopper. Defoliators like the paddy leaf roller and caterpillars are also outlined. The document concludes with factors that contribute to major pests reaching economic thresholds.
Insect pest of riceagriyouthnepal1. Rice is an important staple crop for over 60% of the world's population. Major insect pests of rice in Nepal include the brown plant hopper, yellow rice stem borer, and rice ear-head bug.
2. These pests cause around 25-30% yield losses annually. The brown planthopper sucks plant cell sap and transmits diseases. The yellow stem borer bores into rice stems, causing 'dead hearts' and 'white heads'. The rice ear-head bug feeds on developing rice grains, reducing yield.
3. Management strategies include growing resistant varieties, applying recommended pesticides at economic thresholds, and cultural practices like removing rice residue and maintaining good field drainage.
Plant diseasesCVVMMK DhavejiMicroorganisms like bacteria, viruses, fungi and protozoa can cause plant diseases. The study of plant diseases is called plant pathology. Pathogens are the microorganisms that cause diseases, and they can spread from infected to healthy plants through contact, water droplets, or vectors. Common plant diseases include rice leaf blight caused by bacteria, rice blast caused by fungi, wheat rust caused by fungi, red rot of sugarcane caused by fungi, and tikka disease of groundnut caused by fungi. Managing diseases involves using resistant varieties, treating seeds, removing infected plants, and applying fungicides.
Power point presentation plant diseasesroshni17890This document discusses several common plant diseases, their causes, symptoms, and prevention methods. It describes diseases that affect coconut (bud rot and root wilt caused by bacteria), paddy (blight disease caused by bacteria), rubber (decay disease caused by fungus), pepper (quick wilt caused by fungus), and plantain (bunchy top disease caused by a banana bunchy top virus spread by aphids). The concluding paragraphs emphasize that plant disease management aims to reduce economic and aesthetic damage by applying our growing scientific understanding of pathogen-host interactions and developing control measures tailored to specific diseases.
Common rice diseases (am sinohin)macky75The document discusses several common rice diseases found in the Philippines, including their symptoms, causal organisms, and management options. Sheath blight, rice blast, sheath rot, bakanae, brown spot, narrow brown spot, bacterial leaf blight, bacterial leaf streak, and rice tungro are described. The diseases can be managed through host plant resistance, cultural practices like fertilization and water management, and fungicide or pesticide application when needed. Correct diagnosis of diseases is important for effective management.
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1. Tim hiêu vê bênh hai câỳ ̉ ̀ ̣ ̣Tim hiêu vê bênh hai câỳ ̉ ̀ ̣ ̣
bông vaỉbông vaỉ
Ng i th c hiên: phan anh nguyêtườ ự ̣ ́ ̣Ng i th c hiên: phan anh nguyêtườ ự ̣ ́ ̣
2. 1.Bênh xanh luṇ ̀
a. Triêu ch ng bênh.̣ ứ ̣
- Thê hiên trên la, gân la thô, nôi lên mep̉ ̣ ở ́ ́ ̉ ́
la cuôn cong xuông, mau xanh đâm , câý ́ ̀ ̣
lun , đôt thân ngăn, canh nho, ngăn, cong̀ ́ ́ ̀ ̉ ́
queo, nga rap xuông đât .̉ ̣ ́ ́
- Cây nho bi bênh co the chêt ,cây l n bỉ ̣ ̣ ́ ̉ ́ ớ ̣
bênh ra hoa it, đâu qua kem, x bông̣ ́ ̣ ̉ ́ ơ
ngăn, ô mau co khi cây không ra qua, nhât́ ́ ̀ ́ ̉ ́
la khi bi bênh s m tr c 50 ngay tuôì ̣ ̣ ơ ươ ̉ ̉
4. b, nguyên nhân gây bênh.̣
- do côn trung mô gi i la rêp hai bông̀ ớ ̀ ̣ ̣ aphis
gosypii gloy
- Bênh phat triên nhiêu trong vu bông muạ ́ ̉ ̀ ̣ ̀
trong cac tinh phia nam.́ ̉ ́
- Bênh không truyên qua đât,hat giông vạ ̀ ́ ̣ ́ ̀
tiêp xuc c gi i.́ ́ ơ ơ
- Cac giông lua Mcu-9 bi nhiêm năng. Giônǵ ́ ́ ̣ ̃ ̣ ́
it nhiêm bênh h n nh D-16-2 , D-22, D-́ ̃ ̣ ơ ư
44 va bông co B10 co tinh khang bênh caò ̉ ́ ́ ́ ̣
5. C, biên phap phong tr .̣ ́ ̀ ừ
-luân canh va trông xen bông.̀ ̀
-vê sinh th c vât, thu don tan d , diêt cọ ự ̣ ̣ ̀ ư ̣ ̉
dai.̣
-diêt tr rêp băng cach x li hat giông̣ ư ̣ ̀ ́ ư ́ ̣ ́
hoăc phun thuôc.̣ ́
-chon giông khang bênh.̣ ́ ́ ̣
6. 2. Bênh l cô rê.̣ ở ̉ ̃
A, triêu ch ng bênh.̣ ứ ̣
- la nh ng châm nho mau nâu đen vo cô rê , hoac̀ ữ ́ ̉ ̀ ở ̉ ̉ ̃ ̣ ở
d i gôc.ướ ́
- Bênh co thê bi ngay t trong đât , mâm chêṭ ́ ̉ ̣ ừ ̀ ́
không thê nhu lên đ c trên măt đât.̉ ́ ượ ̣ ́
- gôc thân sat măt đât co vêt mau nâu vang, l nỞ ́ ́ ̣ ́ ́ ́ ̀ ̀ ớ
rông dân ra 4 phia cho toan bô cô rê va gôc thâṇ ̀ ́ ̀ ̣ ̉ ̃ ̀ ́
co mau nâu đen sâm, thôi top teo thăt nho lai, đêń ̀ ̃ ́ ́ ́ ̉ ̣ ́
khi đo toan bô la heo ru xanh rôi qua môt th i giań ̀ ̣ ́ ́ ̃ ̀ ̣ ờ
ngăn cây con chêt khố ́
8. B, nguyên nhân gây bênh.̣
- Bênh do nâṃ ́ rhizoctonia solani kuhn
thuôc l p nâm tr mycelia sterilia gâỵ ớ ́ ơ
ra.
- Nhiêt đô 17-28 đô C bênh phat triên.̣ ̣ ̣ ̣ ́ ̉
Kem phat triên qua 30 đô C.́ ́ ̉ ơ ́ ̣
- Phat triên trong pham vi pH rông 4-9.́ ̉ ̣ ̣
thich h p pH 6-7.́ ơ ơ
9. C, đăc điêm phat sinh phat triên bênh.̣ ̉ ́ ́ ̉ ̣
- Pha hai chu yêu giai đoan cây con m í ̣ ̉ ́ ở ̣ ớ
moc 4-5 la thât . Vê sau giai đoan câý ̣ ̀ ở ̣
l n, bông đa ra hoa thi khong gây hai đ cớ ̃ ̣ ượ
gôc rê ma gây hai trên la gia.ở ́ ̃ ̀ ̣ ́ ̀
- Bênh phats triên manh trong đk th i tiêṭ ̉ ̣ ờ ́
âm it anh sang, nhiêt đô 17-23 đô C̉ ́ ́ ́ ̣ ̣ ̣
- Ngoai ra con phu thuôc vao đk đât đai và ̣ ̣ ̀ ́ ̀
ki thuât canh tac̃ ̣ ́
10. D, biên phap phong tr .̣ ́ ̀ ư
- Vê sinh đông ruông sau khi thu hoacḥ ̀ ̣ ̣
- Lam đât ki tr c khi gieo, san phăng măt̀ ́ ̃ ươ ̉ ̣
luông không đê đong n c , lên luônǵ ̉ ̣ ươ ́
cao , thoat n c nhanh khi m a.ươ ư
- Dung hat giông co chât l ng tôt , ti lề ̣ ́ ́ ́ ươ ́ ̉ ̣
nay mâm cao.̉ ̀
- X ly hat giôngư ́ ̣ ́
12. 3. Bênh giac ban bông.̣ ́
a, triêu tr ng bênh.̣ ứ ̣
- Xuât hiên t moc mâm t i khi thu hoach, gây haí ̣ ừ ̣ ̀ ớ ̣ ̣ ở
mâm, la so, la, thân, đai hoa…̀ ́ ̀ ́ ̀
- Dâu hiêu đăc tr ng la vêt bênh xanh trong saú ̣ ̣ ư ̀ ́ ̣
chuyên sang nâu đen, co dich nhay vi khuân trên̉ ́ ̣ ̀ ̉
vêt bênh.́ ̣
- la co dang vêt đôm goc va dang vêt doc theoƠ ́ ́ ̣ ́ ́ ́ ̀ ̣ ̣
gân.
- Trên thân, canh, cuông, vêt bênh trong xanh nh̀ ́ ́ ̣ ư
giot dâu bao quanh.̣ ̀
13. -trên qua la 1 châm nho xanh nh giot dâu,̉ ̀ ́ ̉ ư ̣ ̀
sau lan rông thanh hinh tron l n.̣ ̀ ̀ ̀ ơ
14. b, nguyên nhân gây bênḥ
-vi khuân xanthomonas malvacearum̉
d0wsn gây bênh.̣
-do tan d th c vât khô rung nên vi khuâǹ ư ư ̣ ̣ ̉
tôn tai.̀ ̣
-do hat giông nhiêm bênh bên trong va bêṇ ́ ̃ ̣ ̀
ngoai.̀
-vi khuân xâm nhâp qua lô khi không va vêt́ ̣ ̃ ́ ̉ ̀ ́
th ng c gi i trên la, qua…ươ ơ ơ ́ ̉
15. C, đăc điêm phat sinh phat triên bênh.̣ ̉ ́ ́ ̉ ̣
- Yêu tô nhiêt đô, đô âm cua đât,không khí ́ ̣ ̣ ̣ ̉ ̉ ́ ́
va l ng m a. Phat triên manh 25-28̀ ươ ư ́ ̉ ̣ ơ
đô C.̣
- Bênh phat triên t giai đoan cây co nụ ́ ̉ ư ̣ ́ ̣
t i giai đoan ra qua.ơ ̣ ̉
- Phu thuôc vao giông, loai khac nhau.̣ ̣ ̀ ́ ̀ ́
16. d, biên phap phong tr .̣ ́ ̀ ừ
- M rông diên tich gieo trông giông bông chôngở ̣ ̣ ́ ̀ ́ ́
chiu bênh , năng suât cao.̣ ̣ ́
- S dung hat giông tôt t nh ng cây bông,ử ̣ ̣ ́ ́ ừ ữ
ruông bông không bi bênḥ ̣ ̣
- Kiêm tra thây giông bi bênh cân x li tr c khỉ ́ ́ ̣ ̣ ̀ ử ́ ướ
gieo băng axit sunfuric, thuôc hoa hoc …̀ ́ ́
- Thu gom tan d sau thu hoach . Luân canh v ì ư ̣ ơ
cây trông khac (cay lua)̀ ́ ́
- Bon thuc đam s m , tăng c ng bon thêm kali,́ ́ ̣ ơ ươ ́
vun gôc cao , thoat n c giai đoan cây con lá ́ ươ ơ ̣ ́
so tia cây kip th i , khong đê mât đô qua day.̀ ̉ ̣ ơ ̉ ̣ ̣ ́ ̀