BỆNH NẤM MỐC BỘT – AGRICULTURE
nấm-mốc-bột
Cây Ớt

BỆNH NẤM MỐC BỘT

Posted On February 24, 2017 at 7:55 am by / 204 Comments

BỆNH NẤM MỐC BỘT TRÊN CÂY ỚT


Mầm bệnh: Leveillula taurica (giai đoạn bất toàn = Oidiopsis taurica)

CÁC TRIỆU CHỨNG VÀ DẤU HIỆU

Nấm mốc bột chủ yếu ảnh hưởng đến lá cây ớt. Mặc dù bệnh thường xảy ra ở những lá già ngay trước hoặc trong khi cây ra quả, bệnh vẫn có thể phát triển ở bất cứ giai đoạn phát triển nào của cây ớt. Các triệu chứng bao gồm lá bị loang lổ, trắng, vết loang bột ngày càng rộng và hợp lại để bao phủ toàn bộ bề mặt dưới của lá. Qua thời gian, vết loang bột cũng sẽ hiện diện ở mặt trên của lá. Lá ớt có nấm mốc phát triển ở mặt dưới có thể đổi sang màu vàng nhợt hay nâu nhạt loang lổ ở mặt trên. Các viền của lá nhiễm nấm có thể cuộn lên phía trên để lộ vết loang nấm bột màu trắng. Các lá bệnh rụng khỏi cây và làm cho cây ớt bị phơi nắng nhiều và có thể dẫn đến cháy nắng.

NHẬN XÉT VỀ BỆNH

Nấm mốc bột có thể đặc biệt nghiêm trọng trong những tháng nóng và có thể gây ra mất mùa nặng. Mầm bệnh có phạm vi vật chủ rất rộng và có thể lây truyền giữa những loài khác nhau. Ở California, nấm mốc bột có thể đến từ những cây trồng như hành, bông, cà chua, tất cả các loài ớt, và các loài cây cỏ dại như cây diếp gai và tầm bóp (thù lù).

Mầm bệnh nấm mốc bột này khác với những mầm bệnh nấm mốc bột ở các giống cây khác mà bệnh xảy ra chủ yếu bên trong lá thay vì trên bề mặt lá. Cleistothecia (bào tử hữu tính) của Leveillula ở giai đoạn toàn diện hiếm khi xảy ra, nhưng các bào tử vô tính (conidia) được sản sinh và được gió gieo rắc. Nói chung, độ ẩm cao tạo điều kiện cho conidia nẩy mầm. Sự lây nhiễm nấm của cây trồng có thể xảy ra trong một phạm vi nhiệt độ rộng (18° đến 33°C) ở cả nhiệt độ cao lẫn nhiệt độ thấp. Trong những điều kiện thích hợp, sự lây nhiễm thứ cấp xảy ra cứ 7 đến 10 ngày, và bệnh có thể lan truyền nhanh chóng. Nhiệt độ trên 35°C có thể tạm thời ngân cản sự phát triển của bệnh nấm mốc bột.

XỬ LÝ

Việc thường xuyên theo dõi để phát hiện nấm mốc bột, đặc biệt là trong thời tiết ấm, là rất quan trọng để áp dụng các loại thuốc diệt nấm kịp thời để ngăn ngừa thiệt hại. Nấm mốc bột được xử lý chủ yếu bằng thuốc diệt nấm.

Kiểm Soát Cây Trồng

Loài nấm gây ra mốc bột có thể tồn tại trong thời gian các mùa vụ trên những cây trồng khác và các loài cỏ dại. Mức độ sống sót tùy thuộc vào các điều kiện môi trường. Do phạm vi vật chủ rộng lớn của nấm, rất khó để kiểm soát lượng mầm bệnh qua mùa đông. Do đó, những phương pháp vệ sinh đơn giản trong và xung quanh các ruộng ớt có thể không làm giảm mầm bệnh đủ để kiểm soát bệnh này.

Phần lớn các giống ớt không có mức độ kháng bệnh mốc bột khả quan. Hiện tại, chưa có chương trình gây giống nào nhằm mục đích phát triển các giống ớt kháng bệnh nấm mốc bột.

Các Phương Pháp Được Chấp Nhận Là Hữu Cơ

Phun lưu huỳnh và kali bicarbonate được chấp nhận sử dụng trong trồng ớt hữu cơ.

Các Quyết Định Xử Lý

Các loại thuốc diệt nấm có thể giúp kiểm soát bệnh hiệu quả và ngăn chặn tổn thất kinh tế nếu áp dụng trong những giai đoạn đầu nhiễm bệnh. Để kiểm soát hiệu quả cần phải phun với áp suất cao và lượng nước lớn để thuốc diệt nấm đạt được sự xâm nhập tối ưu vào các tán cây. Sự phun phủ tốt là rất cần thiết; phun trên đất sẽ phủ tốt hơn phun trên không.

Tên phổ thông Lượng dùng mỗi hecta R.E.I.+ P.H.I.+
(tên thương mại)   (giờ) (ngày)

Khi chọn một loại thuốc sâu, hãy cân nhắc các thông tin liên quan đến chất lượng môi trường. Không phải tất cả các thuốc trừ sâu có đăng ký đều được nêu ra. Hãy luôn đọc kỹ nhãn của sản phẩm được sử dụng.
 
A. SULFUR DF# 5,6 kg 24 0
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Tiếp xúc đa điểm (M2)
  CHÚ THÍCH: Chỉ kiểm soát một phần ngay cả khi phun sớm. Để ngăn ngừa sự tổn thương cho cây trồng, không phun trong vòng 2 tuần nếu đã phun dầu.
 
B. AZOXYSTROBIN
  (Quadris) 450–1.150 ml 4 0
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Chất gây ức chế bên ngoài Quinon (11)
 
C. PYRACLOSTROBIN
  (Cabrio EG) 600–900 ml 12 0
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Chất gây ức chế bên ngoài Quinon (11)
  CHÚ THÍCH: Không phun quá 6 lần mỗi mùa.
 
D. MYCLOBUTANIL
  (Rally 40W) 300 ml 24 0
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Chất gây ức chế khử mety(3)
  CHÚ THÍCH: Không phun quá 4 lần mỗi năm. Không phun quá 1.4 kg/ha.
 
E. QUINOXYFEN
  (Quintec) 300–450 ml 12 3
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Quinolin (13)
  CHÚ THÍCH: Dùng để thay thế luân phiên sau mỗi lần sử dụng một loại thuốc diệt nấm có nhóm cách xử lý khác.
 
F. TRIFLOXYSTROBIN
  (Flint) 110–150 ml 12 3
  TÊN (SỐ HIỆU1) NHÓM CÁCH XỬ LÝ: Chất gây ức chế bên ngoài Quinon (11)
 
G. POTASSIUM BICARBONATE
  (Kaligreen) 180–220 ml 4 1
  CÁCH XỬ LÝ: Một loại muối vô cơ.
  CHÚ THÍCH: Tuy sản phẩm này đã được thử nghiệm cho những loại cây trồng khác, nghiên cứu vẫn đang thiếu dữ liệu sử dụng cho cây ớt và các quan sát cho thấy rằng sản phẩm chỉ giúp kiểm soát một phần. Phun phủ kỹ và thường xuyên là điều cần thiết.
 
** Xem nhãn để biết tỷ lệ pha loãng.
+ Khoảng thời gian hạn chế vào (R.E.I.) là số giờ (trừ khi được ghi khác) từ khi phun thuốc cho đến khi có thể bước vào khu vực được phun mà không cần đồ bảo hộ. Khoảng thời gian trước thu hoạch (P.H.I.) là số ngày từ khi phun thuốc đến khi được thu hoạch. Trong một số trường hợp REI vượt PHI. Trong hai chỉ số này, chỉ số nào dài hơn sẽ là thời gian tối thiểu phải bỏ qua trước khi thu hoạch.
# Được chấp nhận sử dụng trong trồng trọt hữu cơ.
1 Luân phiên các hóa chất với một số hiệu Nhóm cách-xử-lý khác nhau, và không sử dụng các sản phẩm có cùng một số hiệu Nhóm cách-xử-lý hơn hai lần mỗi mùa để đề phòng sâu bệnh kháng thuốc. Ví dụ, the organophosphates có số hiệu Nhóm 1B; các hóa chất có số hiệu Nhóm 1B nên được thay thế bằng các hóa chất có một số hiệu Nhóm khác 1B. Các số hiệu Nhóm cách-xử-lý được chỉ định bởi IRAC (Ban Xử Lý Kháng Thuốc Trừ Sâu).

Nguồn: sưu tầm.

Tư vấn kĩ thuật: 0933.067.033

204 thoughts on “BỆNH NẤM MỐC BỘT

  1. Your style is unique compared to other people I have read stuff from. Many thanks for posting when you’ve got the opportunity, Guess I will just book mark this site.

  2. Everything is very open with a clear clarification of the challenges. It was really informative. Your site is extremely helpful. Many thanks for sharing!

  3. Pingback: viagra canada
  4. Do you have a spam issue on this website; I also am a blogger, and I wanted to know your situation; many of us have developed some nice methods, and we are looking to trade methods with others, why not shoot me an e-mail if interested.

  5. Aw, this was an extremely good post. Taking the time and actual effort to generate a top notch article… but what can I say… I procrastinate a lot and don’t manage to get nearly anything done.

  6. Pingback: deiun.flazio.com
  7. Evеry weekend і used tο pay ɑ quick vizit tһis website, bеϲause і want enjoyment,
    for thе reason thɑt this this site conations іn fact nice funny stuff too.

    Check ᧐ut my homepage: mpo slot

  8. Pingback: canadianpharmacy
  9. When I originally commented I appear to have clicked on the -Notify me when new comments are added- checkbox and now each time a comment is added I receive 4 emails with the same comment. Is there a means you are able to remove me from that service? Appreciate it!

  10. Pingback: canadian drugs
  11. Woah! I’m enjoying the template/theme of this website. It’s simple, yet effective. A lot of times it’s very hard to get that “perfect balance” between superb usability and visual appeal. I must say you’ve done a very good job with this.

  12. Pingback: gewrt.usluga.me
  13. Its like you read my mind! You seem to know a lot about this,
    like you wrote the book in it or something. I think that
    you could do with some pics to drive the message home a bit, but other than that, this is fantastic blog.

    A fantastic read. I’ll certainly be back.

  14. Pingback: canadadrugs
  15. Hi, I do think this is a great blog. I stumbledupon it 😉 I may return yet again since i have bookmarked it. Money and freedom is the greatest way to change, may you be rich and continue to help other people.

  16. Pingback: canadian drugstore
  17. Pingback: canadian rx
  18. Its like you read my mind! You appear to understand a lot about this, like you wrote the guide in it
    or something. I believe that you just could do with a few p.c.
    to pressure the message house a bit, but instead of that, that is
    fantastic blog. An excellent read. I will certainly
    be back.

  19. Hmm, it seems like your site ate my first comment (it was extremely long) so I guess I’ll just sum it up what I had written and say, I’m thoroughly enjoying your blog. I as well am an aspiring blog writer, but I’m still new to the whole thing. Do you have any recommendations for newbie blog writers? I’d appreciate it.

  20. You’re so interesting! I don’t believe I have read a single thing like this before. So nice to find another person with genuine thoughts on this subject. Seriously.. thank you for starting this up. This web site is one thing that is required on the internet, someone with some originality!

  21. Right here is the perfect website for everyone who wishes to find out about this topic. You understand so much its almost tough to argue with you (not that I really would want to…HaHa). You certainly put a new spin on a subject that has been written about for ages. Wonderful stuff, just great!

  22. Pingback: online pharmacies
  23. Wow, awesome blog layout! How long have you been blogging for? you make blogging look easy. The overall look of your website is wonderful, let alone the content!

  24. Having read this I believed it was rather enlightening. I appreciate you finding the time and effort to put this information together. I once again find myself personally spending a significant amount of time both reading and leaving comments. But so what, it was still worthwhile!

  25. Can I just say what a relief to uncover someone that genuinely knows what they are discussing on the net. You definitely understand how to bring an issue to light and make it important. More and more people really need to look at this and understand this side of your story. I was surprised you’re not more popular because you certainly have the gift.

  26. I blog frequently and I genuinely appreciate your information. Your article has truly peaked my interest. I will bookmark your website and keep checking for new details about once per week. I opted in for your RSS feed as well.

  27. Pingback: drugs for sale
  28. Hi tһere, Ӏ discovered үour website by ᴡay of Google whilst
    searching foг a comparable topic, your website ցot here uⲣ, iit
    looks great. I hhave bookmarked it іn my google bookmarks.

    Ꮋi thеrе, just Ьecome alert to your blog tru Google, аnd located that it’s гeally
    informative. I аm going to watch out for brussels. I ѡill
    ƅe grateful if ʏou proceed tһis in future. Many otheг folks miɡht bee benefited ᧐ut of your writing.
    Cheers!

    Alsoo visit my bblog post – อ่านต่อไป

  29. Howdy, I think your website could possibly be having internet browser compatibility issues. When I look at your blog in Safari, it looks fine but when opening in IE, it has some overlapping issues. I just wanted to provide you with a quick heads up! Aside from that, great site!

  30. Having read this I believed it was extremely informative. I appreciate you finding the time and effort to put this article together. I once again find myself personally spending a lot of time both reading and commenting. But so what, it was still worthwhile!

  31. Good day! I just would like to give you a huge thumbs up for your excellent information you have got here on this post. I will be coming back to your blog for more soon.

  32. Whɑt’s ᥙⲣ tο eνery , forr the reason tһat I аm trtuly eager of reading this blog’ѕ post t᧐ be updated daily.
    Іt includes pleasant stuff.

    Ηere is my page – 抓住我

  33. Pingback: drugs for sale
  34. First off I want to say fantastic blog! I had a quick question which I’d like to ask if
    you don’t mind. I was interested to find out how you center yourself and clear
    your thoughts prior to writing. I’ve had difficulty clearing my mind in getting my ideas out there.
    I truly do enjoy writing but it just seems like the first 10 to 15 minutes are lost simply
    just trying to figure out how to begin. Any
    suggestions or tips? Thank you!

  35. Pingback: drugs for sale
  36. This design is spectacular! You most certainly know how to keep a reader amused.
    Between your wit and your videos, I was almost moved to
    start my own blog (well, almost…HaHa!) Excellent job. I really loved what you had to say, and more than that, how you presented it.
    Too cool!

  37. Hi, I think your site might be having browser compatibility issues. When I look at your blog in Safari, it looks fine but when opening in Internet Explorer, it has some overlapping. I just wanted to give you a quick heads up! Other then that, amazing blog!

  38. The other day, while I was at work, my cousin stole
    my iphone and tested to see if it can survive a 25 foot drop, just so she can be a youtube sensation. My apple ipad is now destroyed
    and she has 83 views. I know this is completely off topic but I had to share
    it with someone!

  39. These are really impressive ideas in concerning blogging.
    You have touched some pleasant factors here. Any way keep up wrinting.

  40. Next time I read a blog, I hope that it won’t disappoint me just as much as this one. After all, I know it was my choice to read through, however I actually believed you’d have something useful to talk about. All I hear is a bunch of moaning about something you could possibly fix if you were not too busy looking for attention.

  41. Hi, I do believe this is an excellent blog. I stumbledupon it 😉 I will come back once again since I book marked it. Money and freedom is the greatest way to change, may you be rich and continue to guide others.

  42. you are truly a excellent webmaster. The site loading
    velocity is amazing. It seems that you are doing any unique trick.

    In addition, The contents are masterwork. you have done a wonderful task
    on this matter!

  43. Hi Dear, are you genuinely visiting this web site regularly, if so
    after that you will without doubt obtain good know-how.

  44. Hi, I do believe this is an excellent website. I stumbledupon it 😉 I am going to come back yet again since i have bookmarked it. Money and freedom is the greatest way to change, may you be rich and continue to guide others.

  45. Pingback: kwersv.proweb.cz
  46. You’ve made some really good points there. I checked on the net for additional information about the issue and found most individuals will go along with your views on this website.

  47. Thanks for the good writeup. It in fact used to be a amusement account it.
    Look complex to far delivered agreeable from you! However,
    how can we keep up a correspondence?

  48. Pingback: stromectol online
  49. Pingback: canada drugs
  50. My coder is trying to persuade me to move to .net from PHP. I have always disliked the idea because of the expenses. But he’s tryiong none the less. I’ve been using WordPress on several websites for about a year and am nervous about switching to another platform. I have heard great things about blogengine.net. Is there a way I can transfer all my wordpress posts into it? Any help would be greatly appreciated!

  51. At this time, it seems like WordPress is the preferred blogging platform available right now. (from what I’ve read) Is that what you’re using on your blog? Great post, however, I was wondering if you could write a little more on this subject?

  52. Hi there! I just wanted to ask if you ever have any issues with hackers? My last blog (wordpress) was hacked and I ended up losing a few months of hard work due to no back up. Do you have any solutions to protect against hackers?

  53. Hi there! Ꭰo you know if tһey maҝe any plugins to protect аgainst hackers?
    Ӏ’m kinda paranoid ɑbout losing everything I’ve ԝorked hɑrⅾ on. Any recommendations?

    Αlso visit mу homepage :: bắt tôi

  54. Magnificent goods from you, man. I’ve understand your stuff previous to and you’re just too wonderful. I actually like what you’ve acquired right here, really like what you’re stating and the best way wherein you say it. You make it entertaining and you still care for to keep it sensible. I cant wait to read far more from you. This is really a terrific web site.

  55. An outstanding share! I have just forwarded this onto a friend who had been doing a little research on this. And he actually ordered me dinner simply because I discovered it for him… lol. So let me reword this…. Thanks for the meal!! But yeah, thanx for spending time to discuss this topic here on your site.

  56. You can certainly see your skills in the work you write. The world hopes for more passionate writers like you who are not afraid to say how they believe. Always go after your heart.

  57. Pingback: kwsde.zombeek.cz
  58. Helen Thomson, Richard Roxburgh, Olivia DeJonge, Luke Bracey, Natasha Bassett, David Wenham, Kelvin Harrison Jr., Xavier Samuel, and Kodi Smit-McPhee additionally star.

  59. Does your blog have a contact page? I’m having trouble locating it but, I’d like to shoot you an e-mail. I’ve got some creative ideas for your blog you might be interested in hearing. Either way, great blog and I look forward to seeing it expand over time.

  60. Its like you read my mind! You appear to know so much about this, like
    you wrote the book in it or something. I think that you can do with
    a few pics to drive the message home a little bit, but other than that, this is magnificent blog.
    A great read. I will definitely be back.

  61. Pingback: drugstore online
  62. Pingback: ivermectin lotion
  63. I would like to thank you for the efforts you have put in writing this site. I’m hoping the same high-grade site post from you in the upcoming also. In fact your creative writing abilities has encouraged me to get my own site now. Actually the blogging is spreading its wings fast. Your write up is a good example of it.

  64. Hi there would you mind stating which blog platform you’re using? I’m planning to start my own blog in the near future but I’m having a hard time deciding between BlogEngine/Wordpress/B2evolution and Drupal. The reason I ask is because your layout seems different then most blogs and I’m looking for something completely unique. P.S Sorry for getting off-topic but I had to ask!

  65. My partner and I stumbled over here different website and thought I might check things out. I like what I see so now i am following you. Look forward to looking into your web page repeatedly.

  66. Fantastic items from you, man. I’ve bear in mind your stuff previous to and you are just too excellent. I actually like what you’ve received here, really like what you are saying and the best way through which you say it. You are making it enjoyable and you continue to care for to keep it smart. I can not wait to learn much more from you. That is really a great web site.

  67. Whoa! This blog looks just like my old one! It’s on a completely different subject but it has pretty much the same page layout and design. Outstanding choice of colors!

  68. Wow! This blog looks exactly like my old one! It’s on a entirely different topic but it has pretty much the same layout and design. Excellent choice of colors!

  69. I will immediately grab your rss as I can’t find your email subscription link or e-newsletter service. Do you’ve any? Kindly let me know in order that I could subscribe. Thanks.

  70. Its like you learn my mind! You seem to understand a lot about this, like you wrote the e book in it or something. I feel that you simply can do with some p.c. to pressure the message home a little bit, however instead of that, that is excellent blog. A great read. I’ll definitely be back.

  71. Ensure that you take a rest during Minions perform that you will be secured into an intensive Minions. When you don’t phase apart every so often, you can actually get addicted to Minions in an harmful way. Playing video games should really be enjoyable. Talk with a doctor in the event you realize that a video Minions is slowly and gradually consuming your way of life.

  72. I loved as much as you will receive carried out right here. The sketch is tasteful, your authored material stylish. nonetheless, you command get got an shakiness over that you wish be delivering the following. unwell unquestionably come further formerly again as exactly the same nearly very often inside case you shield this increase.

  73. Howdy, would you mind letting me know which web host you’re utilizing? I’ve loaded your blog in 3 completely different web browsers, and I must say this blog loads a lot quicker then most. Can you suggest a good internet hosting provider at a reasonable price?

  74. I think tһis is among the mⲟѕt vital informɑtion forr me.

    And і’m glad reading үouг article. But shoulԁ
    remark օn few generɑl things, The site style is ideal, the articlkes іѕ really
    nice : D. Gooɗ job, cheers

    Feell free t᧐ visit my blog … 把这个免费在线

  75. Check with an individual on the movie retail store to advise imdb movie you might like. When you can let them know what movies you presently take pleasure in.The worker should know ample to offer you several concepts of the movies to acquire, it really is tough to take care of the new produces even.

  76. I do like the manner in which you have framed this particular problem plus it really does provide us a lot of fodder for thought. On the other hand, coming from what precisely I have experienced, I basically trust as the actual responses pack on that people stay on issue and not embark on a soap box involving some other news of the day. Anyway, thank you for this superb piece and while I can not go along with the idea in totality, I value the viewpoint.

  77. This is very interesting, You are a very skilled blogger.
    I have joined your feed and look forward to seeking more of your
    great post. Also, I have shared your site in my social networks!

  78. Be certain their movies are ideal for what their age is should you be a parent or gaurdian. If they’re a good suit for your children, this means you’re planning to need to look with the grow older variety around the backside of the imdb movie to ascertain. Several movies consist of physical violence along with other material you might not want your little ones.

  79. I’m planning to start my blog soon, but I’m a little lost on everything. Would you suggest starting with a free platform like WordPress or go for a paid option? There are so many choices out there that I’m completely confused. Any suggestions? Thanks a lot.

  80. Purchase a variety of different kinds of Minions film for your kids. While you will find Minions movie that can make a child let the creativity flow and consider, other people can boost electric motor expertise. Regardless if your kids is really a toddler or a pre-adolescent, it can be possible to utilize playtime to connection with your children and support them in mastering new stuff.

  81. Pingback: herbsd.iwopop.com
  82. My brothuer suggested I miɡht ⅼike this website.
    He waѕ totally right. This post actuaⅼly made my dɑу.

    You cann’t imagine just how much time І had spent for tyis info!
    Thanks!

    Visit my page … 读我

  83. Normally I don’t read post on blogs, but I wish to say that this write-up very forced me to try and do it! Your writing style has been amazed me. Thanks, very nice article.

  84. Having read this I thought it was extremely enlightening. I appreciate you finding the time and energy to put this content together. I once again find myself spending a significant amount of time both reading and leaving comments. But so what, it was still worth it!

  85. If you travel frequently, think about starting an increasing selection of mementos out of your travels. You could possibly choose to collect such things as spoons, bottles of wine, postcards and even wine. Regardless of what your collection is, these act as reminders of your various travel experiences.

  86. Aw, this was an extremely nice post. Taking a few minutes and actual effort to create a top notch articleÖ but what can I sayÖ I hesitate a lot and don’t seem to get nearly anything done.

  87. Pingback: canada viagra

Leave a Reply

Your email address will not be published.