IIHR WEATHER REPORT AND CROP ADVISORIES
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 |
|
|
|
|
30.09.2024 |
31.2 |
20.4 |
88 |
59 |
4.6 |
1.73 |
0.0 |
Period: 1st to 15th September, 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 |
||||
|
September (1 - 15) 2024 |
29.27 |
20.81 |
88.60 |
62.87 |
5.11 |
6.20 |
0.20 |
|
(28.9) |
(20.2) |
(85.4) |
(66.9) |
(4.1) |
(5.2) |
(121.0) |
|
* Figures in the parentheses indicate the mean values during the corresponding period for the previous 5 years
- Fortnight from 1st to 15th September, 2024
During the first fortnight of the month i.e., 1st to 15th September, 2024, the mean maximum temperature increased by 0.26ºC and mean minimum temperature decreased by 0.82ºC as compared to the previous fortnight. The mean maximum temperature decreased by 0.4ºC and mean minimum temperature increased by 0.2ºC 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 1.4% and 7.88% respectively as compared to the previous fortnight. There was 0.20 mm rainfall reported 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 condition is congenial, field preparations for sowing rabi vegetables may be started. Farmers are advised to drench Arka Microbial Consortium to improve systemic resistance.
- 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 shoot borer
- Clip and destroy affected shoots
- Spray acephate 50 WP@ 1.5 g/l or Quinalphos 25 EC @ 2ml/l at the time of emergence of new flush. This will also take care of leaf eating weevil, Rhynchaenus mangiferae.
Webber and ash weevil on Mango
- Incidence of webber and ash weevil become serious on new leaves. Remove webbed leaves wherever possible and burn them. Spray quinalphos 25 EC @ 2 ml/l or lamda cyhalothrin 5 EC @ 1ml /l for their management.
Pomegranate
Fruit sucking moth: wherever matured fruits are there fruit sucking moth damage is expected. Netting the orchards is recommended
Thrips: On new flush, thrips incidence is expected. Spray fipronil 5 SC @ 1.5ml/L
Thrips, Scirtothrips dorsalis on chilli
- Black thrips incidence is increasing on chilli and capsicum; it is advised to farmers to raise seedlings under Nylon mesh thrips proof conditions, use thrips free seedlings
- Barrier crop: sow maize all along the border 30 days before chilli transplantation
- Root dipping of the seedlings in imidacloprid 17.8 SL solution @ 0.5 ml per litre of water for one hour during transplanting
- After planting: regular alternate weekly spraying of imidacloprid 17.8 SL 0.5ml/litre+ neem oil 2.5ml/litre, fipronil80WG@40g/acre, Fipronil 40%+ imidaclorpid40%@40g/acre, Cyantraniliprole10OD@240ml/acre, acetamiprid20SP@40g/acre, spirotetramat150 OD@160ml/acre, pongamia oil 2.5ml/litre
Or
- Spray twice @ minimum 15 days interval in a crop cycle Isocycloseram 9.2% (w/w DC) + Isocycloseram10% (w/v DC) * @ 1.2ml/liter
- At every 15 days interval (depending upon the outbreak) chlropyrifos 50EC (2.5ml/l) soil drenching is required to kill pupa that are in soil.
Note: none of these chemicals approved by CIBRC except isocyloseram
*CIBRC label claim available
Fruit fly on cucurbits
- For the management of fruit fly on cucurbits, following integrated approach may be followed. Deployment of cue lure traps @ 15 traps/acre + Sanitation (complete destruction of infested fruits at each harvest) + Bait spray (lamda cyhalothrin 5 EC@ 1 ml + jaggery @ 10g/L) at 10 days interval from the date of flowering.
- Bait Splash of 40/ acre (150g jaggery + 500mlwater + 5ml lamda cyhalothrin 5 EC)
Tobacco caterpillar on Tomato
- For the management of this pest, spray indoxacarb @ 0.75 ml/L or ranxypyr 18.5 SC @ 0.3ml/L.
Leaf hopper on okra/Bhendi
- Incidence of jassids is observed on okra. Spray imidacloprid 17.8 SL @ 0.3 ml/l, if the crop is at pre-flowering stage. Otherwise, spray neem or pongamia soaps @ 1 %, thoroughly covering lower surface of leaves.
Rose Thrips
Incidence of rose thrips was observed more under polyhouse conditions. Spray acepthate 75 SP @ 1 g/l or imidacloprid 17.8 SL @ 0.5 ml/l for its management
Whitefly on Gerbera (polyhouses)
- For the management of whitefly on gerbera diafenthiuron 50 WP @ 1g/liter followed by dinetofuran 20SG @ 0.3 g/l. Install yellow sticky traps coated with adhesive or sticky glue at crop canopy level for monitoring adult whitefly population.
* CIBRC label claim available
Disclaimer: Wherever label claim not available, recommendations are made based on experimental results
- Disease scenario
Disease scenario in relation to the weather data during first fortnight of September, 2024.
Vegetable crops:
Tomato
- Phytophthora blight (Phytophthora infestans) is expected to aggravate in tomato. To manage this disease, remove low lying infected leaves and spray mancozeb75%WP or zineb75%WP(2g/l)/ as protective sprays followed by Famoxadone16.6%+ Cymoxanil 22.1%SC (1g/l) or Metiram 55% + Pyraclostrobin 5% WG (3g/l) as curative spray
Chilli
- Prevailing weather conditions favour development of powdery mildew (Leveillula taurica) disease in chilli. To manage this disease, give foliar spray of tebuconazole 50% + trifloxystrobin 25% WG (0.5g/l)
Flower and Medicinal Crops
Tube rose
- Leaf and flower blight severity increases in tube rose. To manage this disease, spray carbendazim + mancozeb (1g/L) or hexaconazole (0.5 ml/L).
