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	<title>Disease &amp; Management &#8211; Krishi Veer</title>
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		<title>আলুর লিফ রোল ভাইরাস (Potato Leaf Roll Virus – PLRV)</title>
		<link>https://krishiveer.in/%e0%a6%86%e0%a6%b2%e0%a7%81%e0%a6%b0-%e0%a6%b2%e0%a6%bf%e0%a6%ab-%e0%a6%b0%e0%a7%8b%e0%a6%b2-%e0%a6%ad%e0%a6%be%e0%a6%87%e0%a6%b0%e0%a6%be%e0%a6%b8-potato-leaf-roll-virus-plrv/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=%25e0%25a6%2586%25e0%25a6%25b2%25e0%25a7%2581%25e0%25a6%25b0-%25e0%25a6%25b2%25e0%25a6%25bf%25e0%25a6%25ab-%25e0%25a6%25b0%25e0%25a7%258b%25e0%25a6%25b2-%25e0%25a6%25ad%25e0%25a6%25be%25e0%25a6%2587%25e0%25a6%25b0%25e0%25a6%25be%25e0%25a6%25b8-potato-leaf-roll-virus-plrv</link>
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		<dc:creator><![CDATA[Krishi Veer]]></dc:creator>
		<pubDate>Thu, 12 Feb 2026 11:39:29 +0000</pubDate>
				<category><![CDATA[Disease & Management]]></category>
		<category><![CDATA[Potato]]></category>
		<category><![CDATA[#KrishiVeer #sprayschedule #PotatoCultivation #PLRV #DiseaseOfPotato #PotatoDisease #Aphid #KrishiVeerMobileApp #KrishiVeer]]></category>
		<category><![CDATA[climate smart agriculture]]></category>
		<category><![CDATA[স্মার্ট চাষ]]></category>
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					<description><![CDATA[আলুর একটি গুরুত্বপূর্ণ ভাইরাসজনিত রোগ হলো Leaf Roll Virus, যা আলুর ফলন প্রায় 30–80% পর্যন্ত কমিয়ে দিতে পারে যদি শুরুতেই ... <p class="read-more-container"><a title="আলুর লিফ রোল ভাইরাস (Potato Leaf Roll Virus – PLRV)" class="read-more button" href="https://krishiveer.in/%e0%a6%86%e0%a6%b2%e0%a7%81%e0%a6%b0-%e0%a6%b2%e0%a6%bf%e0%a6%ab-%e0%a6%b0%e0%a7%8b%e0%a6%b2-%e0%a6%ad%e0%a6%be%e0%a6%87%e0%a6%b0%e0%a6%be%e0%a6%b8-potato-leaf-roll-virus-plrv/#more-691" aria-label="More on আলুর লিফ রোল ভাইরাস (Potato Leaf Roll Virus – PLRV)">Read more</a></p>]]></description>
										<content:encoded><![CDATA[<p style="text-align: left;">আলুর একটি গুরুত্বপূর্ণ ভাইরাসজনিত রোগ হলো Leaf Roll Virus, যা আলুর ফলন প্রায় 30–80% পর্যন্ত কমিয়ে দিতে পারে যদি শুরুতেই নিয়ন্ত্রণ না করা হয়। এই রোগ মূলত বাহক পোকার মাধ্যমে ছড়ায় এবং আক্রান্ত বীজ আলু ব্যবহার করলে দ্রুত বিস্তার ঘটে।</p>
<p><strong>1. রোগের কারক (Causal organism):</strong></p>
<p>এই রোগের কারণ একটি ভাইরাস যার নাম Potato Leaf Roll Virus (PLRV)।</p>
<p>এটি উদ্ভিদের খাদ্য পরিবহন ব্যবস্থাকে (phloem) আক্রমণ করে, ফলে গাছের বৃদ্ধি কমে যায় এবং কন্দের আকার ছোট হয়ে যায়।</p>
<p><strong>2. বাহক পোকা (Vector):</strong></p>
<ul>
<li>এই ভাইরাস প্রধানত ছড়ায় <strong>জাব </strong>পোকা (Aphid)।    সবচেয়ে গুরুত্বপূর্ণ বাহক হলো Green peach aphid (Myzus persicae)।</li>
<li>এই পোকা আক্রান্ত গাছ থেকে সুস্থ গাছে ভাইরাস ছড়িয়ে দেয়।</li>
</ul>
<p><strong>3. রোগের লক্ষণ (Symptoms):</strong></p>
<p><strong>     পাতায় লক্ষণ-</strong></p>
<ul>
<li>পাতার কিনারা উপরের দিকে মুড়িয়ে যায়।</li>
<li>পাতা শক্ত ও মোটা হয়ে যায়।</li>
<li>পাতার রং হালকা সবুজ বা হলদেটে হয়।</li>
<li>নিচের পুরোনো পাতায় আগে লক্ষণ দেখা যায়।</li>
</ul>
<p><strong>     গাছে লক্ষণ-</strong></p>
<ul>
<li>গাছ খাটো ও দুর্বল হয়ে যায়।</li>
<li>বৃদ্ধি ধীর হয়ে যায়।</li>
<li>ডালপালা কম বের হয়।</li>
</ul>
<p><strong>     কন্দে লক্ষণ-</strong></p>
<ul>
<li>কন্দ ছোট হয়।</li>
<li>কন্দের ভিতরে বাদামি জালের মতো দাগ (Net necrosis) দেখা যেতে পারে।</li>
<li>সংরক্ষণ ক্ষমতা কমে যায়।</li>
</ul>
<p>4. রোগ হওয়ার কারণ (Reasons / Favorable conditions):</p>
<p><strong>      এই রোগ বেশি দেখা যায় যখন-</strong></p>
<ul>
<li>আক্রান্ত বীজ আলু ব্যবহার করা হয়।</li>
<li>জমিতে জাব পোকার আক্রমণ বেশি থাকে।</li>
<li>শীতের শেষে তাপমাত্রা কিছুটা বাড়লে aphid দ্রুত বৃদ্ধি পায়।</li>
<li>জমিতে আগাছা বেশি থাকলে ভাইরাসের উৎস তৈরি হয়।</li>
</ul>
<p><strong>5. রোগের বিস্তার (Mode of spread):</strong></p>
<ul>
<li>জাব পোকার মাধ্যমে।</li>
<li>আক্রান্ত বীজ আলুর মাধ্যমে।</li>
<li>জমিতে স্বেচ্ছায় জন্মানো আলু গাছ (volunteer plants) থেকেও ছড়াতে পারে।</li>
</ul>
<p><strong>6. ব্যবস্থাপনা (Management):</strong></p>
<p><strong>      প্রতিরোধমূলক ব্যবস্থা-</strong></p>
<ul>
<li>সবসময় রোগমুক্ত ও প্রত্যয়িত বীজ আলু ব্যবহার করতে হবে।</li>
<li>জমিতে আগাছা নিয়মিত পরিষ্কার করতে হবে।</li>
<li>আক্রান্ত গাছ শুরুতেই তুলে নষ্ট করতে হবে।</li>
<li>হলুদ স্টিকি ট্র্যাপ ব্যবহার করলে aphid পর্যবেক্ষণ সহজ হয়।</li>
</ul>
<p><strong>7. রাসায়নিক নিয়ন্ত্রণ (Chemical Control – Aphid control):</strong></p>
<p>ভাইরাস সরাসরি মারা যায় না, তাই বাহক পোকা দমন করাই প্রধান উপায়।</p>
<p><strong>কার্যকর কীটনাশক সমূহ-</strong></p>
<p><strong>I. Imidacloprid 17.1% SL গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 0.5-1 ml প্রতি লিটার জলে</p>
<p>বাণিজ্যিক নাম: Confidor</p>
<p><strong>II. Thiamethoxam 25% WG গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 0.25 gm প্রতি লিটার জলে</p>
<p>বাণিজ্যিক নাম:: Actara</p>
<p><strong>III. Acetamiprid 20% SP গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 0.5 gm প্রতি লিটার জলে</p>
<p>বাণিজ্যিক নাম: : TATA MANIK</p>
<p><strong>অত্যধিক আক্রমণ হলে-</strong></p>
<p><strong>I. Dinotifuran 40% + Spinetoram 5% SC গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 1-1.5 ml প্রতি লিটার জলে।</p>
<p>বাণিজ্যিক নাম: : Trassid</p>
<p><strong>II. Spinetoram 11.7% SC গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 1 ml প্রতি লিটার জলে</p>
<p>বাণিজ্যিক নাম: : Delegate</p>
<p><strong>III. Abamectin 1.9% EC গ্রুপের কীটনাশক</strong></p>
<p>ডোজ: 1 ml প্রতি লিটার জলে</p>
<p>বাণিজ্যিক নাম: : Abacin</p>
<p>স্প্রে করার সময় পাতার নিচের দিকে ভালোভাবে স্প্রে করতে হবে, কারণ এফিড সাধারণত পাতার নিচে থাকে।</p>
<p><strong>8. গুরুত্বপূর্ণ পরামর্শ (Farmer Tips):</strong></p>
<ul>
<li>বীজ আলু নির্বাচনই এই রোগ প্রতিরোধের সবচেয়ে গুরুত্বপূর্ণ ধাপ।</li>
<li>নিয়মিত জমি পরিদর্শন করলে শুরুতেই রোগ ধরা যায়।</li>
<li>প্রথম এফিড দেখা গেলেই স্প্রে শুরু করা উচিত।</li>
</ul>
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		<title>Early Blight of Potato: Causes, Symptoms, and Management Strategies</title>
		<link>https://krishiveer.in/early-blight-of-potato-causes-symptoms-and-management-strategies/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=early-blight-of-potato-causes-symptoms-and-management-strategies</link>
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		<dc:creator><![CDATA[Krishi Veer]]></dc:creator>
		<pubDate>Tue, 03 Dec 2024 08:05:45 +0000</pubDate>
				<category><![CDATA[Crop]]></category>
		<category><![CDATA[Disease & Management]]></category>
		<category><![CDATA[Potato]]></category>
		<category><![CDATA[early blight]]></category>
		<category><![CDATA[early blight of potato]]></category>
		<category><![CDATA[potato diseases]]></category>
		<guid isPermaLink="false">https://krishiveer.in/?p=611</guid>

					<description><![CDATA[Early Blight of Potato: Causes, Symptoms, and Management Strategies Disease Overview : Disease Name: Early Blight of Potato Causal Organism: ... <p class="read-more-container"><a title="Early Blight of Potato: Causes, Symptoms, and Management Strategies" class="read-more button" href="https://krishiveer.in/early-blight-of-potato-causes-symptoms-and-management-strategies/#more-611" aria-label="More on Early Blight of Potato: Causes, Symptoms, and Management Strategies">Read more</a></p>]]></description>
										<content:encoded><![CDATA[<h1>Early Blight of Potato: Causes, Symptoms, and Management Strategies</h1>
<p><img decoding="async" class="aligncenter" src="https://www.shutterstock.com/image-photo/early-blight-on-potato-leaves-260nw-2368853137.jpg" alt="Potato Early Blight Photos, Images &amp; Pictures | Shutterstock" /></p>
<h2>Disease Overview :</h2>
<ul>
<li>Disease Name: Early Blight of Potato</li>
<li>Causal Organism: <em>Alternaria solani</em> (fungus)</li>
<li>Affecting Stage: Can affect plants at any stage, but symptoms are more severe on older leaves during the vegetative to tuber formation stages.</li>
</ul>
<h2>Symptoms :</h2>
<h4>Leaf Symptoms:</h4>
<p>Small, dark brown to black spots on older leaves, forming concentric rings (target-like appearance), surrounded by yellow halos.</p>
<h4>Stem Symptoms:</h4>
<p>Dark brown to black lesions on stems and petioles, causing partial wilting.</p>
<h4>
Tuber Symptoms:</h4>
<p>Sunken, irregularly shaped brown to black lesions on the surface, with dry, dark brown corky rot extending into the tuber flesh.</p>
<h2>Favorable Conditions :</h2>
<ol>
<li>Warm and Humid Weather: Temperatures between 20-30°C.</li>
<li>Leaf Wetness: Periods of leaf wetness from dew, rainfall, or irrigation.</li>
<li>Plant Stress: Plants stressed by nutrient deficiency, water stress, or excessive nitrogen application.</li>
<li>Poor Airflow: Dense planting, reducing air circulation.</li>
</ol>
<h2>Management Strategies :</h2>
<h3>1. Cultural Control:</h3>
<p>Use resistant varieties, rotate crops, plant certified disease-free seed potatoes, maintain proper plant spacing, avoid over watering, and remove crop debris.</p>
<h3>
2. Organic Control:</h3>
<p>Spray neem oil or garlic-based biopesticides, apply Trichoderma harzianum, and use compost tea.</p>
<h3>
3. Chemical Control:</h3>
<p>Apply Mancozeb, Chlorothalonil, Azoxystrobin, Cymoxanil + Mancozeb, and Difenoconazole.</p>
<h2>Trade Names of Chemicals :</h2>
<p>1. Dithane M-45: Mancozeb 75% WP (Indofil)<br />
2. Kavach: Chlorothalonil 75% WP (Indofil)<br />
3. Amistar: Azoxystrobin 23% SC (Syngenta)<br />
4. Curzate: Cymoxanil 8% + Mancozeb 64% WP (DuPont)<br />
5. Score: Difenoconazole 25% EC (Syngenta)</p>
<h2>Effective Management :</h2>
<p>By adopting these control measures, False Smut can be effectively managed, protecting rice crops from yield and quality losses.</p>
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		<title>Sheath Rot Disease of Rice: Causes, Symptoms &#038; Control Measures</title>
		<link>https://krishiveer.in/sheath-rot-disease-of-rice-causes-symptoms-control-measures/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=sheath-rot-disease-of-rice-causes-symptoms-control-measures</link>
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		<dc:creator><![CDATA[Krishi Veer]]></dc:creator>
		<pubDate>Thu, 14 Nov 2024 03:44:12 +0000</pubDate>
				<category><![CDATA[Crop]]></category>
		<category><![CDATA[Disease & Management]]></category>
		<category><![CDATA[General Agriculture]]></category>
		<category><![CDATA[Paddy]]></category>
		<category><![CDATA[rice diseases]]></category>
		<category><![CDATA[rice sheath rot]]></category>
		<category><![CDATA[sheath rot]]></category>
		<category><![CDATA[sheath rot of rice]]></category>
		<guid isPermaLink="false">https://krishiveer.in/?p=571</guid>

					<description><![CDATA[Sheath Rot Disease of Rice: Causes, Symptoms &#38; Control Measures Disease Overview : Causal Organism: Sarocladium oryzae (fungus) Affecting Stage: ... <p class="read-more-container"><a title="Sheath Rot Disease of Rice: Causes, Symptoms &#038; Control Measures" class="read-more button" href="https://krishiveer.in/sheath-rot-disease-of-rice-causes-symptoms-control-measures/#more-571" aria-label="More on Sheath Rot Disease of Rice: Causes, Symptoms &#038; Control Measures">Read more</a></p>]]></description>
										<content:encoded><![CDATA[<h1><strong>Sheath Rot Disease of Rice: Causes, Symptoms &amp; Control Measures</strong></h1>
<p><a href="https://krishiveer.in/wp-content/uploads/2024/09/images-11.jpeg"><img fetchpriority="high" decoding="async" class="aligncenter size-full wp-image-379" src="https://krishiveer.in/wp-content/uploads/2024/09/images-11.jpeg" alt="sheath rot of rice" width="269" height="188" /></a></p>
<h2><strong>Disease Overview :</strong></h2>
<ul>
<li><strong>Causal Organism:</strong> <em>Sarocladium oryzae</em> (fungus)</li>
<li><strong>Affecting Stage:</strong> Booting to heading stage (leaf sheaths surrounding panicle)</li>
<li><strong>Symptoms:</strong> Greyish-brown lesions, rotting, and disintegration of leaf sheaths</li>
</ul>
<h3><strong>Symptoms :</strong></h3>
<ol>
<li>Initial lesions on uppermost leaf sheaths</li>
<li>Lesions turn brown with dark margins</li>
<li>Infected sheath rotting and disintegration</li>
<li>Panicles trapped inside infected sheath</li>
<li>Poor grain filling and chaffy grains</li>
<li>Greyish-white powdery fungal mass in severe cases</li>
</ol>
<h3><strong>Favorable Conditions :</strong></h3>
<ul>
<li>High humidity and warm temperatures (20-30°C)</li>
<li>Frequent rainfall and cloudy weather</li>
<li>Excessive nitrogen fertilizers</li>
<li>Dense crop stands and poor drainage</li>
</ul>
<h3><strong>Control Measures :</strong></h3>
<h4><strong>Cultural Control &#8211;</strong></h4>
<ol>
<li>Use resistant varieties (ADT-37, CR-1009, IR-20)</li>
<li>Proper water management and drainage</li>
<li>Balanced nitrogen fertilizer application</li>
<li>Crop rotation with non-host crops</li>
<li>Remove infected debris</li>
</ol>
<h4><strong>Organic Control &#8211;</strong></h4>
<ol>
<li>Trichoderma harzianum or Pseudomonas fluorescens biocontrol agents</li>
<li>Neem oil sprays or neem-based bio-pesticides</li>
<li>Compost tea or cow urine-based bio-extracts</li>
</ol>
<h4><strong>Chemical Control &#8211;</strong></h4>
<ol>
<li>Hexaconazole 5% SC (Contaf &#8211; Tata Rallis)</li>
<li>Propiconazole 25% EC (Tilt &#8211; Syngenta)</li>
<li>Carbendazim 50% WP (Bavistin &#8211; BASF)</li>
<li>Mancozeb 75% WP (Dithane M-45 &#8211; Indofil)</li>
</ol>
<h4><strong>Effective Management &#8211;</strong></h4>
<p>By implementing these strategies, farmers can effectively manage sheath rot disease, minimize yield loss, and improve grain quality, ultimately enhancing crop resilience and productivity.</p>
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		<title>Bacterial Leaf Blight (BLB) Prevention Tips for a Healthy Rice Harvest !</title>
		<link>https://krishiveer.in/bacterial-leaf-blight-blb-prevention-tips-for-a-healthy-rice-harvest/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=bacterial-leaf-blight-blb-prevention-tips-for-a-healthy-rice-harvest</link>
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		<dc:creator><![CDATA[Krishi Veer]]></dc:creator>
		<pubDate>Thu, 14 Nov 2024 02:17:45 +0000</pubDate>
				<category><![CDATA[Crop]]></category>
		<category><![CDATA[Disease & Management]]></category>
		<category><![CDATA[General Agriculture]]></category>
		<category><![CDATA[Paddy]]></category>
		<category><![CDATA[bacterial leaf blast]]></category>
		<category><![CDATA[control of blb]]></category>
		<category><![CDATA[symptoms of blb]]></category>
		<guid isPermaLink="false">https://krishiveer.in/?p=566</guid>

					<description><![CDATA[Bacterial Leaf Blight (BLB) of Rice Disease Overview &#8211; Causal Organism: Xanthomonas oryzae pv. oryzae (bacteria) Affecting Stage: Seedling to ... <p class="read-more-container"><a title="Bacterial Leaf Blight (BLB) Prevention Tips for a Healthy Rice Harvest !" class="read-more button" href="https://krishiveer.in/bacterial-leaf-blight-blb-prevention-tips-for-a-healthy-rice-harvest/#more-566" aria-label="More on Bacterial Leaf Blight (BLB) Prevention Tips for a Healthy Rice Harvest !">Read more</a></p>]]></description>
										<content:encoded><![CDATA[<h1><strong>Bacterial Leaf Blight (BLB) of Rice</strong></h1>
<p><img decoding="async" class="aligncenter" src="https://www.shutterstock.com/image-photo/sheath-blight-rice-field-diseases-600nw-2186083761.jpg" alt="243 Bacterial Leaf Blight Rice Royalty-Free Images, Stock Photos &amp; Pictures | Shutterstock" width="255" height="170" /></p>
<h2><strong>Disease Overview &#8211;</strong></h2>
<ul>
<li><strong>Causal Organism:</strong><em> Xanthomonas oryzae pv. oryzae</em> (bacteria)</li>
<li><strong>Affecting Stage:</strong> Seedling to reproductive stage (leaves)</li>
<li><strong>Symptoms:</strong> Leaf blight, wilting, and scorched leaves</li>
</ul>
<h3><strong>Symptoms &#8211;</strong></h3>
<h4><strong>Leaf Blight Phase :</strong></h4>
<ul>
<li>Water-soaked lesions near leaf tips or margins</li>
<li>Yellow to straw-colored streaks</li>
<li>Lesions progress downwards, causing drying and wilting</li>
</ul>
<h4><strong>Kresek Phase (younger plants):</strong></h4>
<ul>
<li>Yellow, wilted, and curled leaves</li>
<li>Plant wilting without distinct lesions</li>
<li>Stunted growth and potential death</li>
</ul>
<h4><strong>Favorable Conditions :</strong></h4>
<ul>
<li>High humidity (70-80%) and temperatures (25-34°C)</li>
<li>Heavy rainfall and wind</li>
<li>Excessive nitrogen fertilizers</li>
<li>Dense planting and standing water</li>
</ul>
<h3><strong>Control Measures :</strong></h3>
<h4><strong>Cultural Control &#8211;</strong></h4>
<ol>
<li style="text-align: left;">Use resistant varieties (e.g., IRBB-21, IR-64, Pusa Basmati-1121)</li>
<li style="text-align: left;">Seed treatment with antibiotics (Streptomycin sulfate)</li>
<li style="text-align: left;">Balanced nitrogen fertilizer application</li>
<li style="text-align: left;">Drain excess water</li>
<li style="text-align: left;">Proper plant spacing</li>
<li style="text-align: left;">Remove infected debris</li>
</ol>
<h4><strong>Organic Control &#8211;</strong></h4>
<ol>
<li>Pseudomonas fluorescens (biological control agent)</li>
<li>Neem extracts and plant-based oils</li>
<li>Cow urine or cow dung slurry (antimicrobial treatment)</li>
</ol>
<h4><strong>Chemical Control &#8211;</strong></h4>
<ol>
<li>Streptomycin sulfate + Tetracycline</li>
<li>Copper-based bactericides (Copper oxychloride, Copper hydroxide)</li>
<li>Bleaching powder (in standing water)</li>
</ol>
<h4><strong>Trade Names of Chemicals &#8211;</strong></h4>
<ol>
<li>Streptocycline (Hindustan Antibiotics Limited)</li>
<li>Blitox (Indofil)</li>
<li>Nordox (Indofil)</li>
</ol>
<h3>Effective Management :</h3>
<p>By implementing these control measures, farmers can effectively manage Bacterial Leaf Blight and protect their rice crops from significant yield loss.</p>
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