फसल स्वास्थ्य: लक्षण से कारण तक
इस पाठ में आप सीखते हैं कि रोग का नाम रखने से पहले फैलाव, अवस्था और पिछले तीन दिनों के बदलाव कैसे दर्ज करें।
- By the end you can describe a problem by pattern, spread and stage.
- By the end you can link common moulds to the fault behind them.
- By the end you can act on insect counts instead of guesses.
लक्षण से कारण तक
पहली नज़र, निदान नहीं। स्रोत: ICAR-DMR मैनुअल और रोग बुलेटिन।
| क्या दिखता है | संभावित कारण | पहला कदम |
|---|---|---|
| लंबी डंडी, छोटे कैप | CO₂ ज़्यादा (1,500 ppm से ऊपर) | ताज़ी हवा बढ़ाएं |
| कम्पोस्ट पर हरे धब्बे | ट्राइकोडर्मा; कम pH या बची अमोनिया | अलग करें, हटाएं; अगला बैच जांचें |
| केसिंग के बाद पिन नहीं | ठंडा और हवादार नहीं किया | 16 से 18 °C, हवा दें |
| कैप पर भूरे धंसे धब्बे | बैक्टीरियल ब्लॉच; गीले कैप | सतह सुखाएं, नमी 85% से कम |
| सफेद गीली गांठें | वेट बबल, केसिंग से | नमक से ढकें, हटाएं; केसिंग को भाप दें |
| छोटी मक्खियां | सियारिड/फोरिड | जाली, लाइट ट्रैप, स्वच्छता |
ये आंकड़े संबंधित स्रोत और विधि के संदर्भ में हैं। इन्हें हर प्रजाति या फार्म का सार्वभौमिक निर्देश न मानें। पुराने मूल्य वर्तमान बाज़ार भाव नहीं हैं।
Capture the pattern
- Notice
- The location and pattern of symptoms are useful evidence.
- Understand
- A close-up alone leaves out the batch, room and timeline.
- Try it
- Photograph affected and unaffected areas and record when signs began.
01Describe before you name
Four questions come before any name. Is it one tray or the whole room. Is it near the door, under a duct, or spread evenly. Which flush is running. What changed on the farm about three days earlier.
Negative evidence counts too: if the same compost in the next room is clean, the compost is probably not the cause.
Write these four answers in the diary before you telephone anyone. A KVK scientist or the ICAR-DMR helpdesk can work with that description. Nobody can work with the words the crop is finished.
02Most moulds are compost and casing history
DMR's table of causes reads like a compost audit. Green mould follows low compost pH, carbohydrate rich and nitrogen poor compost, or immature spawn. Ink caps follow free ammonia, too much nitrogen or old straw. White plaster mould invades when compost pH sits outside 7.2 to 7.8. Olive green mould follows poor aeration in Phase II or pasteurisation above 60 C.
Cinnamon mould follows casing that is too wet or too strongly disinfected.
So the honest question after a mould outbreak is not which spray, it is which step in the last three weeks was out of range.
03The ones that move fast
Some problems give you days, not weeks. DMR states that dry bubble, if left uncontrolled, can destroy a crop in 2 to 3 weeks.
Wet bubble is carried by the casing soil, and DMR's folder records that its resting spores survive there for three years, which is why casing source and treatment matter more than any later action.
False truffle appears above 23 C, which in the north Indian plains means February and early March. Bacterial blotch needs 20 C and free water on the cap. Each of these is a measurement you can take today.
04Insects, counts and the chemical boundary
Sciarid flies are managed by counting, not by smell. DMR's threshold table treats any live adult in the first flush as an action point, and more than 20 catches per trap per week from the second flush onwards.
NHB describes 35 mesh nylon screening on doors and ventilators, and a 15 W yellow light trap over an oil coated sheet.
This site prints no pesticide names or doses. Approvals change and mushrooms are eaten fresh. Check the current label approval for mushrooms in India and your state advisory, and note the exact approved product label and required pre-harvest interval; no universal 48-hour rule is appropriate.
Write a proper problem report
- Photograph the affected patch and one clean patch in the same room.
- Write which trays and which part of the room are affected.
- Write the flush number and the day count since venting.
- List every change made on the farm in the previous three days.
- Send all of it to your KVK or ICAR-DMR before buying anything.
डायरी में लिखें: Date, room, tray positions, flush number, symptom description, recent changes, trap counts.
ये गलतियां न करें
- Naming the disease first and only then looking at where it is and is not.
- Reusing or storing casing soil near the rooms, which carries wet bubble into the next crop.
- Reaching for a spray a neighbour recommended without checking approval or the waiting period.
खुद को जांचें
तीन सवाल, तुरंत जवाबGreen mould in compost is linked by DMR mainly to:
Why does casing source matter so much for wet bubble?
In the first flush, how many live sciarid adults are an action point?
यह संपादकीय स्व-जांच है, प्रमाणपत्र नहीं। जवाब इस डिवाइस पर भी सहेजे नहीं जाते।
शब्दावली
- Negative evidence
- What is not affected, which often points to the cause.
- Dry bubble
- A fungal disease that deforms caps and can take a crop in weeks.
- Sciarid fly
- A small dark fly whose larvae feed on mycelium.
- Label approval
- Official permission for a product to be used on a named crop.
संदर्भ और आगे पढ़ें
Operating values require stage, strain, sensor and production-system context.
संदर्भ खोलें