CROP WEATHER SITUATION
METEOROLOGICAL DATA OF
ICAR-INDIAN INSTITUTE OF HORTICULTURAL RESEARCH
HESSARAGHATTA LAKE P.O., BANGALORE – 560 089
Latitude : 13o 7’ N Longitude: 77o29’ E Altitude: 890 M
Date |
Temperature |
Relative Humidity |
Evaporation |
Wind speed |
Rainfall |
||
- |
oC |
% |
mm |
km/h |
mm |
||
|
Mean Max. |
Mean Min. |
Mean At 8.30 am |
Mean At 1.30 pm |
|
|
|
15.07.2024 |
24.8 |
21.8 |
91 |
91 |
1.5 |
8.50 |
5 |
Period :16th to 30th June, 2024
Latitude : 13071 N Longitude : 720291E Altitude : 890 M
Fortnight |
Temperature (0C) |
Relative Humidity (%) |
Evaporation (mm) |
Wind speed (km/h) |
Total Rainfall (mm) Mean Max. |
||
Mean Max. |
Mean Min. |
Mean At 7.30AM |
Mean at 1.30 PM |
||||
June (16-30) 2024 |
30.03 |
21.58 |
87.00 |
64.87 |
6.23 |
5.95 |
36.80 |
(29.9) |
(20.6) |
(85.8) |
(65.1) |
(4.4) |
(5.7) |
(58.00) |
* Figures in the parentheses indicate the mean values during the corresponding period for the previous 5 years
Fortnight from 16th to 30th June, 2024
During the second fortnight of the month i.e., 16th to 30th June, 2024, the mean maximum and mean minimum temperature decreased by 0.31ºC and 0.39ºC respectively as compared to the previous fortnight. The mean maximum and mean minimum temperature decreased by 1.3ºC and 0.2ºC respectively as compared to the mean values of the corresponding period for the previous five years. The percent relative humidity in the morning and in the afternoon decreased by 0.2% and 0.66% respectively as compared to the previous fortnight. There was 36.80 mm of rainfall recorded during this fortnight.
Crop weather situation
High temperature and low rainfall were recorded in the last fortnight compared to the average of previous 5 years. Wherever soil moisture is conducive field preparation, basal dose of FYM and fertilizer application may be taken up for kharif vegetable crops. Foliar application of Arka Vegetable Special may be given for standing vegetable crops. Basin cleaning & fertilizer application may be carried out in perennial fruit crops. Foliar spray of nitrogen, potassium, zinc and boron may be given to guava crop which will help in getting bigger sized fruits.
Incidence of insect pests
Under the prevailing weather situation, following pests are expected under Bengaluru conditions on different horticultural crops. Various management options for their management are mentioned below.
Mango stem borer:
This period coincides with the emergence of adult beetles of trunk borer, Batocera rufomaculata. Plug active holes (can be diagnosed by the presence of fresh chewed wood material and excreta) with cotton dipped in chlorpyrifos @ 5ml/L and close with mud. In case of severe infestation IIHR developed Sealer cum Healer can be used.
Fruit fly on cucurbits:
For the management of fruit fly (Bactrocera cucurbitae) on cucurbits, the following integrated approach may be followed. Installing cue lure traps @ 10 traps/acre + Sanitation (complete destruction of infested fruits at each harvest) + Bait spray (Deltamethrin 0.1 % + jaggery @ 10g/L) at 10 days interval from the date of flowering.
Thrips on chilli
- Grow border crop like maize 20-25 days before transplantation of main crop
- Install blue sticky traps @ 12-15/acre
- Need based spray of fipronil 5SC* @ 1.5 ml/l or spinetoram 11.7 SC@ 1ml/litre or spinosad 45 SC @ 0.5ml/litre alternating with imidacloprid 200 SL @ 0.5 ml/l at fortnightly interval if the crop is at early stage of infestation.
- Addition of 2 ml of neem oil or pongamia oil per every litre of insecticide spray solution enhances the efficacy of the chemicals against the pest.
Cut worms
- Incidence of cutworms may be seen up to 15-20 days after transplantation of vegetable crops
- Young seedlings will be cut at ground level by cut worm larvae during night time.
- Drench the soil around the root zone of the crop with imidacloprid 200 SL @ 5ml/l for killing larvae in the soil.
Legumes pod borer
- Spray indoxacarb14.5 SC @ 0.75ml/litre at 10 days interval from flowering
stage .
Root-knot nematode in tomato
- Raise healthy transplants on soil mixed with Neem cake @ 50kg + Trichoderma harzianum @ 1kg + Paecilomyces lilacinus @ 1kg /ton of soil.
- Apply 2 kg of Farm Yard Manure enriched with bio-pesticides – T. harzianum and P. lilacinus at the time of planting.
Whitefly on Gerbera (polyhouses)
- Spray diafenthiuran 50 WP @ 1 g/l followed by dinetofuran 20 SG@ 1g/litre
- Install yellow sticky traps coated with adhesive or sticky glue at crop canopy level for monitoring adult whitefly population.
Rose Thrips
- Spray pongamia oil 0.5%.
- Apply fipronil 5 SC @ 1.5 ml/l in case of severe infestations.
- Drench the soil with imidacloprid 200 SL @ 5ml/l for killing pupae in the soil.
Midge on crossandra
- Incidence of midge is increasing on crossandra. For its management spray imidacloprid 17.8 SL@ 0.5 ml/l.
*CIBRC label claim available
Crop- weather situation: Crop Specific Advisory
S. No |
Crop |
Crop- weather situation |
1 |
Crossandra |
Scales observed |
2 |
Marigold |
Severe leaf miner infestation |
3 |
Chrysanthemum |
Leaf eating caterpillar observed |
4 |
Jasmine |
Leaf eating caterpillar observed |
5 |
Medicinal crops |
Leaf eating caterpillar and leaf spot observed in Shankhpushpi |
Disease scenario
Disease scenario in relation to the weather data during second fortnight of June, 2024.
Fruit crops:
Papaya
- Black spot infection on foliage and fruit appears under prevailing rainy condition. To manage this disease give a foliar spray of chlorothalonil 75%WP @2g/L or thiophanate methyl 70% WP (1g/L).
Banana
- Sigatoka leaf spot severity increases on leaves. Remove and destroy old infected and dried leaves to prevent secondary spread of disease. Follow weeding to avoid build up of humidity in plantation. Give a foliar spray of carbendazim 12%+mancozeb 63% WP fungicide @1g/L or propiconazole 25%EC @1ml/L along with spray adjuvant at 0.5 ml/L.
Vegetable crops:
Tomato
- To manage early blight, remove and destroy lower most old and diseased leaves in the morning. Give foliar application of mancozeb (2g/l) or tebuconazole 50% + trifloxystrobin 25% WG (0.75g/l) at fortnightly interval
Onion
- Onion twister severity increases. Avoid flood irrigation and maintain proper soil drainage to prevent disease spread by irrigation water. To manage this disease a foliar spray of Dithane M-45@2.5g/litres, or Difenoconazole 25%EC @ 1ml/litre is recommended.