ধানের পোকা

ধানের পোকা

ভূমিকা ধান বাংলাদেশের প্রধান খাদ্যশস্য। ধানের উৎপাদন বৃদ্ধির জন্য বিভিন্ন ধরনের পোকা মাকড় অন্যতম প্রধান অন্তরায়। ধানের জমিতে বিভিন্ন প্রকার পোকা আক্রমণ করে, যা ফলন কমিয়ে দিতে পারে। এই পোকাগুলোর মধ্যে কিছু পোকা প্রধান এবং মারাত্মক ক্ষতি করে থাকে। এই নিবন্ধে ধানের প্রধান পোকাগুলো, এদের জীবনচক্র, ক্ষতির ধরণ, এবং নিয়ন্ত্রণ পদ্ধতি নিয়ে বিস্তারিত আলোচনা করা হলো।

ধানের প্রধান পোকা এবং তাদের পরিচিতি ধানের জমিতে বিভিন্ন প্রকার পোকা আক্রমণ করে। নিচে কয়েকটি প্রধান পোকা নিয়ে আলোচনা করা হলো:

• তৃণ নাশক পোকা (Stem Borer): এটি ধানের অন্যতম ক্ষতিকর পোকা। এর মধ্যে উল্লেখযোগ্য হলো সাদা মূলের পোকা (White Stem Borer) ও গোলাপী মূলের পোকা (Pink Stem Borer)।
• পাতা মোড়ানো পোকা (Leaf Folder): এই পোকা ধানের পাতা মুড়িয়ে ডিম পাড়ে এবং লার্ভা পাতা খেয়ে ক্ষতি করে।
• পাতা খাদ্যী পোকা (Leaf Hopper): এরা ধানের পাতা থেকে রস চুষে নেয়, ফলে পাতা হলুদ হয়ে যায় এবং গাছ দুর্বল হয়ে পড়ে।
• ঘাইন পোকা (Brown Planthopper): এটি ধানের জমিতে ব্যাপকভাবে ক্ষতি করে এবং ভাইরাস রোগ ছড়াতে সাহায্য করে।
• পাইন পোকা (Rice Hispa): এই পোকা ধানের পাতায় ছোট ছোট ছিদ্র করে এবং লার্ভা ও পূর্ণাঙ্গ পোকা উভয়ই ক্ষতি করে।
• সেন্দু পোকা (Mealy Bug): এটি ধানের বিভিন্ন অংশে আক্রমণ করে এবং রস চুষে দুর্বল করে দেয়।
• ধানের থ্রিপস (Thrips): এরা ধানের পাতা ও ফুল খেয়ে ক্ষতি করে।

পোকাগুলোর জীবনচক্র এবং ক্ষতির ধরণ

ধানের পোকা, জীবনচক্র ও ক্ষতির ধরণ

জীবনচক্র|ক্ষতির ধরণ|নিয়ন্ত্রণ পদ্ধতি|

ডিম-লার্ভা-পুপা-পূর্ণাঙ্গ পোকা। লার্ভা কাণ্ডের ভিতরে প্রবেশ করে ক্ষতি করে। | কাণ্ড ছিদ্র হয়ে যায়, গাছ দুর্বল হয়ে ঢলে পড়ে, শীষ বের হতে বাধা পায়। | আলোর ফাঁদ, ফেরোমন ট্র্যাপ, রাসায়নিক কীটনাশক ব্যবহার।|

ডিম-লার্ভা-পুপা-পূর্ণাঙ্গ পোকা। লার্ভা পাতা মুড়িয়ে তার ভেতরে খাদ্য গ্রহণ করে। | পাতা মুড়িয়ে যায়, ফলে সালোকসংশ্লেষণ ব্যাহত হয় এবং ফলন কমে যায়। | আলোর ফাঁদ, জৈব কীটনাশক, রাসায়নিক কীটনাশক ব্যবহার।|

ডিম-নিম্ফ-পূর্ণাঙ্গ পোকা। নিম্ফ ও পূর্ণাঙ্গ পোকা পাতা থেকে রস চুষে খায়। | পাতা হলুদ হয়ে যায়, গাছ দুর্বল হয়ে পড়ে, ভাইরাস রোগ ছড়াতে সাহায্য করে। | আঠালো হলুদ ফাঁদ, জৈব কীটনাশক, রাসায়নিক কীটনাশক ব্যবহার।|

ডিম-নিম্ফ-পূর্ণাঙ্গ পোকা। নিম্ফ ও পূর্ণাঙ্গ পোকা ধানের পাতা থেকে রস চুষে খায়। | পাতা শুকিয়ে যায়, গাছ হলুদ হয়ে ঢলে পড়ে, ভাইরাস রোগ ছড়াতে সাহায্য করে। | আলোর ফাঁদ, জৈব কীটনাশক, রাসায়নিক কীটনাশক ব্যবহার।|

ডিম-লার্ভা-পুপা-পূর্ণাঙ্গ পোকা। লার্ভা ও পূর্ণাঙ্গ পোকা পাতায় ছিদ্র করে খায়। | পাতায় ছোট ছোট ছিদ্র হয়, পাতা দেখতে খারাপ লাগে এবং সালোকসংশ্লেষণ ব্যাহত হয়। | রাসায়নিক কীটনাশক, জৈব কীটনাশক ব্যবহার।|

ডিম-নিম্ফ-পূর্ণাঙ্গ পোকা। নিম্ফ ও পূর্ণাঙ্গ পোকা ধানের বিভিন্ন অংশ থেকে রস চুষে খায়। | গাছ দুর্বল হয়ে যায়, বৃদ্ধি কমে যায় এবং ফলন হ্রাস পায়। | জৈব কীটনাশক, রাসায়নিক কীটনাশক ব্যবহার।|

ডিম-লার্ভা-পুপা-পূর্ণাঙ্গ পোকা। লার্ভা ও পূর্ণাঙ্গ পোকা পাতা ও ফুল থেকে রস চুষে খায়। | পাতা ও ফুল ক্ষতিগ্রস্ত হয়, গাছের বৃদ্ধি কমে যায় এবং ফলন হ্রাস পায়। | জৈব কীটনাশক, রাসায়নিক কীটনাশক ব্যবহার।|

পোকাcontrol control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control controlcontrol control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control 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control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control control

এখনই ট্রেডিং শুরু করুন

IQ Option-এ নিবন্ধন করুন (সর্বনিম্ন ডিপোজিট $10) Pocket Option-এ অ্যাকাউন্ট খুলুন (সর্বনিম্ন ডিপোজিট $5)

আমাদের সম্প্রদায়ে যোগ দিন

আমাদের টেলিগ্রাম চ্যানেলে যোগ দিন @strategybin এবং পান: ✓ দৈনিক ট্রেডিং সংকেত ✓ একচেটিয়া কৌশলগত বিশ্লেষণ ✓ বাজারের প্রবণতা সম্পর্কে বিজ্ঞপ্তি ✓ নতুনদের জন্য শিক্ষামূলক উপকরণ