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 |
|
|
|
29.08.2024 |
26.8 |
21.3 |
87 |
76 |
3.9 |
7.02 |
11.9 |
Period: 1st to 15th August, 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 |
||||
August (1 - 15) 2024 |
28.89 |
21.53 |
91.00 |
71.07 |
4.70 |
4.05 |
165.40 |
(28.5) |
(20.3) |
(85.7) |
(66.5) |
(4.2) |
(7.0) |
(39.6) |
* Figures in the parentheses indicate the mean values during the corresponding period for the previous 5 years
Fortnight from 1st to 15th August, 2024
During the first fortnight of the month i.e., 1st to 15th August, 2024, the mean maximum temperature increased by 1.35ºC and mean minimum temperature decreased by 0.16ºC as compared to the previous fortnight. The mean maximum temperature decreased by 0.1ºC and mean minimum temperature remains unchanged as compared to the mean values of the corresponding period for the previous five years. The percent relative humidity in the morning increased by 2.5% and in the afternoon decreased by 1.99% as compared to the previous fortnight. There was 165.40 mm of rainfall reported during this fortnight.
Crop weather situation
- The fortnight has received four times more rainfall than the average of previous 5 years. The crops which are sensitive to water logging may be protected by draining out excess moisture from the base of the plants. Intercultural operation to remove weeds and providing aeration to roots must be taken-up. In vegetable crops foliar spray of vegetable special (5 g/l) may be given to boost yield & quality.
- Papaya flowers and fruits showed more fungal infection due to continuous rains
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.
Leaf Webber on mango
- Remove and destroy the webbed portions wherever they are accessible
- For the management of this pest prune the affected shoots and spray lambda cyhalothrin 5EC @ 1ml/l
Mango shoot borer
- Clip and destroy affected shoots
- Spray lambda cyhalothrin 5EC @ 1ml/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
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 (cypermethrin 1 ml + jaggery @ 10g/L) at 10 days interval from the date of flowering.
- Bait Splash of 40/ acre (150g jaggery + 500mlwater + 5ml cypermethrin)
Tomato moth
- Install tuta pheromone traps for monitoring of the adults @ 4-6 traps/acre
- Spray indoxacarb 14.5 SC @ 0.75 ml/litre or spinosad 45 SC @ 0.3ml/l
Mites on tomato
- For the management of mites spray wettable sulphur @ 3 g/l or propargite 57 EC @ 1.25 ml/l or fenzaquin 10EC @ 1.5ml/litre
Thrips, Scirtothrips dorsalis on chilli
- Spray fipronil 5 SC (1.5 ml/l) or Difenthuran 50WP @ 1g/litre or thiacloprid 240 SC @ 0.5 ml/l alternately at fortnightly interval.
Root-knot nematode in tomato
- Raise healthy transplants on soil applied with FYM or vermicompost @5 tons/ha enriched with Trichoderma harzianum @ 2kg + Paecilomyces lilacinus @ 2kg + Pseudomonas fluorescens @2kg /ton of FYM.
- In standing crop, apply neem cake enriched with above biopesticides @ 50g/ m2. This can also be mixed with water and applied as soil drench @ 2l/m2.. The same can be thoroughly filtered and sent along with drip or sprayed
Rose Thrips,
- Spray imidacloprid 17.8 SL @ 0.5ml/l or dimethoate 30 EC @ 2ml/l with pongamia oil 0.5%.
- Apply Fipronil 5 SC @ 1.5 ml/l in case of severe infestations.
- Drench the soil with Chlorpyrifos 20 EC @ 5ml/l for killing pupae in the soil.
Mites on rose
- For the management of mites spray milbemectin1 EC @ 1 ml/l
Midge on crossandra
- Under the prevailing conditions, incidence of midge increases on crossandra. For its management spray imidacloprid 17.8SL@ 0.5 ml/l.
Whitefly on Gerbera (polyhouses)
- Spray diafenthiuran 50WP @ 1 g/l followed by dinetofuran 20SG @1g/litre
- 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 August, 2024.
Fruit crops:
Papaya
- Anthracnose severity is expected to increase with prevailing weather. Spray application of thiophanate methyl M (0.1%) along with sticker @ 0.5 ml/L is recommended.
Vegetable crops:
Tomato
- Early blight disease severity increases on leaves fruits and stem. To manage this disease give foliar spray of mancozeb @ 2g/l followed by tebuconazole 50% + trifloxystrobin 25% WG @ 0.75g/l after 10 days
Chilli
- Due to rain splash anthracnose spread is expected in green chillies. To manage this disease give foliar spray of copper oxychloride 50% WP (2.5g/l) or mancozeb75%WP (2 g/l) or propineb70%WP (5g/l) or Zineb75%WP (2g/l) as preventive sprays followed by Difenoconazole25% EC (0.5ml/l) as curative sprays.