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IIHR weather report

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CROP WEATHER SITUATION

METEOROLOGICAL DATA OF

ICAR-INDIAN INSTITUTE OF HORTICULTURAL RESEARCH

HESSARAGHATTA LAKE P.O., BANGALORE – 560 089

 

 

Period: 1st to 15th February, 2019

Latitude: 13071 N                   Longitude: 770 291E              Altitude: 890 M

 

Fortnight

Temperature (0C)

Relative Humidity (%)

 

Evaporation

(mm)

 

Wind speed

(km/h)

 

Total Rainfall

(mm)

Average

Max.

Average

Min.

Average

at 7.30AM

Average at 1.30PM

February

1st to 15th,

2019

29.9

15.7

76.7

43.1

5.2

5.2

11.4

(28.8)

 

(15.1)

(69.5)

(39.9)

(4.6)

(3.3)

(0.0)

 

* Figures in the parentheses indicate the average values during the corresponding period for the previous 5 years

 

Fortnight from 1st to 15th February, 2019

During the first fortnight of the month i.e., from February 1st to 15th, 2019, the average maximum and minimum temperatures were higher by 0.70C and 3.90C respectively, as compared to 1he previous fortnight. The average maximum temperature was higher by 0.50C and minimum temperature was lower by 0.30C, respectively, as compared to the average values of the corresponding period for the previous five years. The percent relative humidity during morning was lower by 9.7% and in the afternoon it was higher by 4.0% respectively, as compared to the previous fortnight. There was 11.4 mm rainfall during the fortnight.

Crop weather situation

Since the temperature is higher compared to the average temperature of same period during previous years, protective irrigation may be taken up and soil moisture is kept low to reduce sun scorching effect. Field preparation can be taken up for summer sowing of vegetables.  Farmers are advised to mulch soil wherever possible. The weather condition of the last fortnight was suitable for the cultivation of Milky Mushroom and Paddy straw Mushroom.

 

Incidence of pests and diseases

Under the prevailing weather conditions, the following pests are expected in Bangalore on various horticultural crops.  Their management options are mentioned below.

Fruit Crops

Mango

Incidence of leaf hoppers is noticed in mango inflorescence. Spraying of imidachloprid 0.5 ml/l or fipronil 1 ml/l is recommended.

Custard Apple

In new flushes from pruned trees incidence of tea mosquito bug is noticed. Spraying of imidachloprid 0.5 ml/l or lambda cyhalothrin (0.003%)/ is recommended.

Vegetable Crops

Bhendi/Okra

Incidence of aphids and leaf hoppers is noticed, spraying with the thiochloprid @ 0.4 ml/l is recommended.

 

Drum Stick

Incidence of leaf eating caterpillar is noticed and spraying with the spinosad @ 0.4 ml/l is recommended.

Brinjal

The incidence of brinjal shoot and fruit borer can be expected. Spraying of [email protected] ml/l or [email protected] ml/l is recommended.

Cabbage

Incidence of diamond back moth is noticed. Spraying with the diafenthiuran 0.5gm/l)is recommended.

Tomato

Incidence of Tuta absoluta is noticed under polyhouse conditions.  Spray spinosad 45 SC @ 0.25 ml/l

Bitter gourd

Incidence of aphies is noticed and spraying of thiamethoxam 0.3gm/l is recommended.

Cucumber

Incidence of aphids and leaf hoppers is noticed, spraying with the thiochloprid @ 0.4 ml/l is recommended.

Floriculture

Rose

Thrips incidence is noticed on rose under polyhouse condition.  Spray Fipronil 5 SC @ 1.5 ml/l. If the problem persists after one week also, sprays pinosad 45 SC @ 0.25 ml/l.

Gerbera

Under polyhouse conditions thrips incidence is more. Spray [email protected]/l.

*Safe waiting periods are to be followed as per the label claims

 

Disease Scenario

Disease forecast based on weather parameters during the first fortnight of February, 2019. Increase in temperature increased the population built up of whiteflies. As whiteflies are vectors of begomoviruses, increase in incidence of leaf curl virus diseases in bitter gourd, ridge gourd, chilli and tomato was noticed. Preventive sprays of neem based insecticides @2.0 ML/Liter followed by systemic insecticides is recommended.