How to Protect Sugarcane Crops from Diseases and Pests During Rainy Season

Kuldeep Singh
posted on September 5, 2026September 5, 2026
Comments Off on How to Protect Sugarcane Crops from Diseases and Pests During Rainy Season

Sugarcane crop protection during rainy season from pests and diseases

🌧️ How to Protect Sugarcane Crop from Diseases and Pests During Rainy Season? Farmers Must Do These Things

Rainy season is no less than a blessing for the sugarcane crop. There is enough moisture in the field, sugarcane grows faster, and within a few days, the field starts looking greener than before. 🌱

But farmer brothers, this same rain can also become a big challenge for the sugarcane crop.

Continuous rainfall, waterlogging in the field, high moisture and humid conditions can increase the attack of different fungal diseases and pests in sugarcane. If the disease is not identified at the beginning, its effect can slowly become visible across the entire field.

The months of August and September are also important for sugarcane farmers because the sugarcane crop grows rapidly during this time. During this period, farmers should also increase the monitoring of their crop.

👉 If you want complete information about sugarcane farming, then you must also read our Sugarcane Farming: Advanced Techniques, Cost, Yield and Profit.

🌾 1. Why Does the Risk of Disease in Sugarcane Increase During Rainy Season?

During the rainy season, there is enough moisture in the soil. This moisture is good for sugarcane growth, but excess moisture and a wet environment for a long time can also be favourable for the development of many fungal diseases.

According to agricultural scientist Dr. I.K. Kushwaha, when sugarcane grows rapidly, the risk of fungus and diseases can also increase at the same time.

Therefore, farmers should not be satisfied just by seeing that the field looks green.

🌱 The crop is green, but is it healthy too?

To know the answer, farmers should visit the field from time to time and closely observe the plants.

Especially during rainy days, pay attention to these parts:

👀 Sugarcane leaves
🌱 Sugarcane top
🪵 Sugarcane stem
🐛 Holes in leaves
🟤 Spots on leaves
💧 Water accumulated in the field
🟡 Unusual yellowing in plants

🦠 2. Be Careful About Red Rot Disease in Sugarcane

Red Rot Disease can be a serious disease in sugarcane crops. During rainy and humid weather, farmers should closely watch for its symptoms.

If any sugarcane plant in the field looks weaker than other plants, its growth has stopped, or symptoms like rotting are visible in the plant, it should not be ignored.

🔎 How to Identify Red Rot Disease?

Farmers should carefully check the sugarcane stem.

Inside it:

🔴 Red-coloured spots may be visible.

👃 A bad smell may also be felt due to rotting in the affected part.

🌱 Normal growth of the plant may be affected.

If such symptoms are visible, farmers should immediately take advice from an agricultural expert.

Remember – Identifying the disease at the beginning is much better than trying to control it after the disease has spread.

🌱 3. Also Check the Sugarcane Top Carefully

Many farmers only look at the height and greenery of sugarcane when they visit the field. But during the rainy season, it is also important to check the upper part of the sugarcane, that is, the top.

In some diseases, the normal growth of the sugarcane top can be affected. Unusual changes may be seen in the leaves and upper part.

Therefore, while walking through the field, also look at the tops of some plants from above.

If:

🌿 Leaf growth is not normal
📉 Plant growth is slowing down
🔄 There are unusual changes in the leaves
🌱 The top looks weak or abnormal

then farmers should become alert immediately.

🐛 4. How to Identify Pest Attack in Sugarcane?

During the rainy season, disease is not the only problem. Many types of pests can also damage the sugarcane crop.

To identify pests, first carefully check the leaves.

If the leaves have:

🕳️ Small or large holes,

🟤 Spots of different colours,

🌿 Leaves are getting damaged,

or the normal growth of the plant is being affected,

then the presence of pests in the field should be checked.

🌅 Why Should You Monitor the Field in the Morning?

Morning can be a good time for monitoring the field. Along with looking at the field from the field bund, farmers should also go some distance inside the field and carefully observe the plants.

The most important thing for farmer brothers is that do not wait until you see the pests.

It is more important to identify pest activity and early signs of damage.

🕷️ 5. Not Every Pest Is an Enemy, Protect Beneficial Insects

Farmers should always remember that every insect seen in the field is not an enemy of the crop.

In nature, there are many organisms and insects that help control pests that damage crops.

🕷️ Spider is a good example of this. Spiders help reduce the number of small pests by eating them.

Therefore, if beneficial organisms are present in the field, pesticides should not be used against them without need.

⚠️ Excessive use of pesticides can kill beneficial insects along with harmful pests.

This is why Integrated Pest Management (IPM) is being given importance in farming today.

👉 For more information about pest and disease management, you can read our Pest and Disease Control Measures.

🪤 6. Monitor Pests with Pheromone Traps

Pheromone traps are used to monitor pests in many crops, including sugarcane.

The biggest benefit of this is that farmers can keep an eye on the activity of some major pests in the field.

🪤 Use pheromone traps as per the advice of a local agricultural expert.

In this way, instead of immediately applying chemical pesticides for every problem, farmers can first understand the pest situation.

First identify, then control – this is smart farming.

🦠 7. Why Is Trichoderma Used?

In sugarcane farming, Trichoderma is considered an important biological option. It is a beneficial fungus and is used for managing some soil-related disease problems.

As per the method suggested by agricultural scientists, Trichoderma can be used during irrigation.

According to the mixture mentioned in the interview:

🪣 200 litres of water

➕

🍯 2 kg jaggery

➕

🌾 1 kg gram flour (besan)

➕

🦠 2 kg Trichoderma culture

A solution can be prepared and applied to the field through irrigation.

⚠️ Important: The quantity of Trichoderma, type of product and method of application may vary under different conditions. Farmers should use it only as per agricultural advice for their area, the product label and the recommendation of a local agricultural expert.

💧 8. What to Do If Water Gets Collected in the Sugarcane Field?

During the rainy season, one of the biggest problems faced by sugarcane farmers is waterlogging.

Water remaining in the field for a short time is not always a serious problem, but if water remains in the field for a long time, the roots of sugarcane may not get enough air.

Due to this:

🟡 Leaves may turn yellow.

🌱 Root development may be affected.

🥀 The risk of root rot may increase.

📉 Plant growth may become weak.

Therefore, farmers should first focus on proper drainage.

If water has collected in the field, wherever possible, try to remove the excess water by making drainage channels or through the available drainage system.

👉 For information related to irrigation and water management, our Micro Irrigation System: Types, Benefits, Cost and Complete Information can also be useful.

🟡 9. What to Do If Sugarcane Starts Turning Yellow After Waterlogging?

If sugarcane leaves start turning yellow after continuous rainfall, it is not right to immediately assume that it is due to a lack of fertilizer and apply urea or other fertilizers.

First, check whether water has accumulated in the field.

Because waterlogging can affect the normal activity of the roots, and the plant may not be able to take nutrients properly.

What Should Farmers Do at Such a Time?

💧 First, remove the excess water.
🌱 Check the condition of the roots and plants.
🔎 Check for symptoms of disease.
🧪 If needed, get the soil tested.
👨‍🌾 Take advice from a local agricultural expert.
🚫 Do not apply any medicine or fertilizer without need.

🧪 10. NPK Alone Is Not Enough for Sugarcane

Nitrogen, phosphorus and potassium, that is, NPK, are important nutrients for getting a good yield from sugarcane.

But farmer brothers should also understand that plants need some amount of micronutrients as well.

These include:

🔹 Zinc
🔹 Boron
🔹 Iron
🔹 Copper
🔹 Sulphur

If there is a deficiency of any of these nutrients, crop growth and health can be affected.

But this does not mean that farmers should apply all micronutrients in the field without testing.

👉 The best way is – get the soil tested and manage nutrition according to the deficiency.

🌾 11. Proper Management of Organic Fertilizer and Micronutrients

In the interview mentioned by the agricultural scientist, a mixture per bigha has been mentioned, in which copper sulphate, zinc sulphate, borax, ferrous sulphate and lime are mixed with well-rotted cow dung manure or vermicompost.

The mentioned quantity was:

🔹 Copper Sulphate – 250 grams
🔹 Zinc Sulphate – 250 grams
🔹 Borax – 250 grams
🔹 Ferrous Sulphate – 250 grams
🔹 Lime – 2 kg

After this, it has been said to mix it with organic fertilizer and apply it to the field.

⚠️ But farmer brothers should keep in mind that the need for micronutrients is not the same in every field. Therefore, decide the quantity only based on soil testing and the advice of a local agricultural expert.

🌱 12. Proper Technique Along with Nutrition Is Also Important for Higher Sugarcane Yield

For good growth and better production of sugarcane crop, applying only fertilizer is not enough.

Field preparation, the right variety, proper spacing, irrigation, nutrition, weed control and timely pest and disease management—all these contribute to better production.

If you want to know about new techniques and better tillering in sugarcane, you can also read the article published on our website, New Method of Sugarcane Farming: More Production at Low Cost.

👨‍🌾 13. Farmers Should Give Just 10–15 Minutes to the Field Every Day

Farmer brothers, the most expensive solution is not always necessary for protecting the sugarcane crop.

Many times, regular monitoring itself becomes the biggest protection.

During rainy days, try to regularly visit the field.

✅ Be Sure to Check These Things in the Field:

👀 Leaves: Are there any holes, spots or unusual colour?

🌱 Top: Is the growth normal or slowing down?

🪵 Stem: Is there any rotting, unusual colour or bad smell?

💧 Soil: Is water remaining collected for a long time anywhere?

🐛 Pests: Are there any pests or signs of pest damage on the leaves?

🕷️ Beneficial Insects: Are spiders and other beneficial organisms present in the field?

🟡 Yellowing: Are plants suddenly turning yellow in any part of the field?

❤️ 14. Timely Decisions Are Important to Protect the Farmer’s Hard Work

Sugarcane crop is not just a crop.

It involves months of hard work by the farmer. From field preparation to planting, fertilizer application, irrigation, weeding and managing the crop during the rains, the farmer works continuously.

When sugarcane grows well in the field, the farmer’s hope also increases with it.

That is why leaving the crop to God during the rainy season is not a wise decision.

🌧️ Proper drainage is necessary so that rainwater becomes a blessing for the crop.

🦠 Timely identification is necessary to protect the crop from diseases.

🐛 Regular monitoring is necessary to protect the crop from pests.

🕷️ It is important to protect beneficial insects.

🌱 Balanced nutrition is necessary for good growth.

👨‍🌾 And above all – the farmer needs to spend time in the field.

📌 15. Important Rainy Season Checklist for Sugarcane Farmers

During the rainy season, farmers can remember this small checklist:

☑️ Monitor the field every day or regularly.
☑️ Check for holes and spots on the leaves.
☑️ Check the sugarcane top.
☑️ Keep an eye on rotting or red spots on the stem.
☑️ Do not allow water to collect in the field.
☑️ Protect beneficial insects.
☑️ Use techniques like pheromone traps as needed.
☑️ Use biological options like Trichoderma only on the advice of an expert.
☑️ Use micronutrients based on soil testing.
☑️ Do not spray any medicine for a disease without identifying it.
☑️ Always use chemical medicines according to the label and expert advice.

🌾 Conclusion: The Easiest Mantra to Protect Sugarcane Crop During Rainy Season

Rain is very important for the sugarcane crop, but ignoring excess moisture and waterlogging can lead to serious losses.

When the sugarcane crop grows rapidly in August and September, farmers should also increase their monitoring at the same time.

If any symptom of disease is seen in a plant, do not ignore it. If holes or spots are seen on the leaves, check for pests. If water has collected in the field, immediately arrange for proper drainage. Protect beneficial insects and do not use chemical medicines without need.

The most important thing:

❤️ “Do not be happy just by seeing the sugarcane crop green from a distance; go close and also check its condition.”

Because before a disease spreads across the entire field, it often appears in only a few plants.

A little effort at the right time can save the farmer’s entire crop from major losses.

🌱 The secret of a good crop is not just more fertilizer or more medicines, but the right care at the right time.

Note:* The measures mentioned in the interview with the agricultural scientist have been presented in simple language in this article. Before using any pesticide, fungicide, micronutrient or biological product, always check with a local agricultural expert/agriculture department and follow the information given on the product label.*