WEATHER ADVISORY

 

WEATHER DATA FOR THE PREVAILING WEEK

Date of Fruit Pruning: 15/09/2021

Thursday (13/01/2022)–Wednesday (19/01/2022)

 

Location

Temperature

(°C)

Possibility of Rain

Cloud Cover

Wind Speed

(Km/hr)

Min-Max

R H%

 

Min

Max

Min

Max

Nashik

12-17

25-29

Nashik, Dindori- Mon-Drizzling

Ozar, Vani, Pimpalgaon Baswant, Palkhed Fri-Drizzling, Kalwan, Loni – Thu to Wed- No rain

Clear to partly cloudy

11-16

31-42

56-69

Pune

13-18

27-30

Pune,Phursungi, Loni Kalbhor, Uruli Kanchan, Patas, Yavat, Baramati, Narayangaon - Thu to Wed –No Rain, Indapur- Mon- Drizzling.

Clear to partly cloudy

09-11

25-39

71-84

Solapur

13-16

29-31

Vairag, Barshi, Nannaj – Thu to Wed –No rain, Ausa, Pandharpur - Mon- Drizzling,

Latur- Thu, Fri, Mon- Drizzling,Tuljapur- Sun, Mon– Drizzling, Solapur- Thu, Fri- Drizzling.

Clear to partly cloudy

09-20

18-33

47-78

Sangli

13-19

28-31

Sangli,Shetfal,Palus,Vita, Arag,Walva, Kawthe,Palsi Khanapur,Miraj, Kagvad Tasgaon ,Shirguppi Thu to Wed –No Rain.

Clear to partly cloudy

09-16

20-33

64-88

Vijayapura

11-16

29-31

Vijayapura,Chadchan,Tikota &Telsang –

Sun - drizzling.

Clear to partly cloudy

12-23

20-33

58-63

Hyderabad

17-19

28-29

Hyderabad, Medchal,Zahirabad – Thu to Wed- drizzling to Moderate Rain

Clear to partly cloudy

15-17

44-47

84-92

Satara

13-19

26-29

Satara- Sun- Drizzling, Khatav-Mon- Drizzling, Phaltan Thu to Wed -No Rain.

 

Clear to partly cloudy

07-10

28-40

69-83

Ahmednagar

12-18

27-30

Ahmednagar- Fri, Mon- Drizzling, Karjat Sangamner Shrigonda- Mon-Drizzling, Jamkhed, Kopargaon, Akole, Rahata- Thu to Wed-No Rain

Clear to partly cloudy

13-18

25-33

53-89

Jalna

13-16

26-29

Ambad Jalna, , Jafrabad, Gansawangi, Mantha –Fri, Mon-Drizzling to Light rain.

 

Clear to partly cloudy

12-16

33-42

60-85

Buldhana

12-17

25-28

Buldana,Chikhli, Fri to Mon –Drizzling,Sindkhedraja, D.raja Fri, Sun, Mon-Drizzling

Clear to partly cloudy

11-14

38-43

59-85

Kolhapur

14-19

27-30

Kagal, Karveer, Gagan-bavada - Thu to Wed-No Rain.

 

Clear

07-11

21-39

58-91

Bengaluru Rural

17-18

28-29

Bengaluru-east, Bengaluru-north, Bengaluru-south ,Doddaballapur, Anekal –

Thu to Wed- Drizzling to Moderate Rain

Clear to partly cloudy

09-18

33-40

73-92

Belagavi

12-18

27-30

Belagavi,Gokak,Chikodi, Khanapur-Thu-Wed-No rain, Athni- Mon- Drizzling

Clear to partly cloudy

07-12

24-41

60-90

Bidar

16-17

28-29

Bidar-Thu to Wed- Drizzling

Humnabad, Basavakalyan –Thu to Fri- Drizzling to light rain

Clear to partly cloudy

10-16

32-44

82-91

Bagalkot

12-15

29-30

Bagalkot, Mudhol, Jamkhandi, Hungund- Thu to Wed -No rain

Clear to partly cloudy

10-23

21-32

63-76

 

Note: Above weather information is summary of weather forecasting given in following websites

https://www.wunderground.com/?cm_ven=cgi

https://imdagrimet.gov.in/weatherdata/BlockWindow.php

https://www.timeanddate.com/weather/india

ICAR-National Research Centre for Grapes does not claim accuracy of it.  

 

 

 

 

 

 

II. Water management (Dr. A.K. Upadhyay & Dr. Yukti Verma)

A)     Days after pruning – 119 days

B)      Pan evaporation:  3-5 mm

Amount of irrigation advised

1.       In case the soil is under wapsa (field capacity) condition, donot irrigate the vineyard.

2.       Practice mulching to keep the bunds moistened. This will reduce the salinity build up in the root zone due to evaporation of the moisture from the surface of the bund.

3.       During Flowering to setting stage, apply irrigation through drip @ 2000 to 3500L/ acre/ day.  Further, in case vigour is more than desired, then reduce irrigation water application by half.

4.       During Berry development stage till harvesting, apply irrigation through drip @ 5100- 8500 L/ acre/ day. 

 

 Soil and Nutrient management

Note:  In early maturing and coloured varieties incidence of cracking are being observed.  If the harvesting is scheduled with in 30 days, do not go in for application of boron and calcium application.  This will be waste of money and time.  The application should be subject to deficiencies observed in the vineyard.  Focus on canopy density and regulate accordingly.  If cracking is there, then control secondary infections (disease and fruit flies). 

 

Flowering to setting stage:

1.      Manage canopy for adequate sunlight and air movement within the canopy for avoiding/ minimizing problems of kooj (inflorescence necrosis).

2.      Apply 3-4 kg Phosphoric acid in two to three splits this week.  Remember that the pH of the irrigation water should be near 6.0.

3.      Petiole nutrient testing: At 70% capfall stage, petiole samples should be taken for nutrient analysis. The leaf opposite the bunch should be removed for sampling.

 

 

 

 

Berry Development stage:

1.      If the berry size is from 2-4mm, spray calcium @ 2g Calcium Chloride or 0.5 g Ca chelate per litre.  Target sprays immediately after GA application (preferably next day) for better absorption.

2.      If the berry size is from 5-8mm, spray calcium & 2g Calcium Chloride or 0.5 g Ca chelate per litre.  Target sprays immediately after GA application (preferably next day) for better absorption.

3.      Apply magnesium sulphate through drip @ 10kg/acre from 8-10mm berry size.

4.      Foliar spray of sulphate of potash @ 3g/acre at 8-10mm berry size.

5.      After 8-10 mm berry size, start application of nitrogen in the form of ammonium sulphate @ 25kg /acre in 4 splits in calcareous soil and as urea @ 15 kg/acre in other soils in 3 splits.  Follow this up with Sulphate of potash or 0-0-50 @ 25 kg/ acre in 3-4 splits for next two weeks.

6.      If soils are calcareous, then apply zinc sulphate and ferrous sulphate @ 5 kg/acre at 65-70 days after pruning.

7.      Possibility of powdery mildew infection.  Build up potassium levels in grapevine either through foliar spray @4-5 gm SOP/L and drip @ 15 kg SOP/L if not applied since last 20 days.

8.      Manage canopy for adequate sunlight and air movement within the canopy for avoiding/ minimizing problems of berry cracking.

 

Ripening to Harvest stage:

1.       Apply Sulphate of potash or 0-0-50 @ 25 kg/ acre in 3-4 splits for next two weeks.  Total potassium application (SOP) should be approx. 60 kg/acre during this stage.  Follow this up with Magnesium sulphate @ 10 kg/acre in two splits. 

2.       Spray Magnesium sulphate  and potassium sulphate @ 3g/L in calcareous soil.

3.       Manage canopy for adequate sunlight and air movement within the canopy for avoiding/ minimizing problems of berry cracking.

 

III. Requirement of growth regulators (Dr. S.D. Ramteke)

 

-          NIL

 

IV. Canopy management (Dr. R.G. Somkuwar)

 

During the coming week, following practices need to be followed.

1.       Minimum temperature is going below 10 degree thereby creating the possibility of pink berry formation. Hence, bunch covering with paper, increase in irrigation in the vineyard, etc measure need to be followed.

2.        The reduction in minimum temperature will hamper the berry development. Hence, ensure the root activity by mulching on the bund, application of required fertilizers, etc.

3.        During the cloudy weather, incidence of powdery mildew may be more. Hence, open canopy  so as to penetrate the sunlight through canopy will help to avoid the micro-climate for disease build up.

4.       Cluster drying may be major problem in the vineyard. Application of calcium and magnesium after berry veraison will not support to control the cluster drying. Hence, nutrient balance may be taken care before the veraison stage. 

 

 

V. Disease management (Dr. Sujoy Saha)

 

Days after fruit pruning

Risk of diseases

Downy mildew

Powdery mildew

Anthracnose

Others (specify)

119

Moderate

Moderate

Nil

Bacterial spot-Nil

Bunch rot-Moderate

 

 

As secondary infection of downy is prevalent in many areas application of Dimethomorph@1g/L may be done for downy mildew control. Two applications of Amisulbrom 17.7% SC @375ml/ha at 10-days interval will give a good control of downy mildew. Care should be taken to cover the top leaves while spraying.  Foliar spray of Trichoderma may also be given @2-3ml/L but it should not be given immediately after application of chemical fungicides. Trichoderma through drip should be continued.  Sprays of Ampelomyces quisqualis @5g/l may also be given when high humidity with low temperature is prevailing, for the control of powdery mildew. Preventive spray of sulphur @ 2-3g/l will also give a protection against powdery mildew at this stage. If the incidence of powdery mildew is high, application of Cyflufenamid@ 500ml/ha or tetraconazole @ 0.75 ml /L or Fluxapyroxad+Difenoconazole@ 800ml/ha or metrafenone @250ml/Ha may be sprayed in non-export crops for the control of powdery mildew. Target application of Bacillus sp or Trichoderma with hand sprayer may be done to get good results. Tank-mix of any chemicals should be strictly avoided. Chitosan may also be applied to prevent berry cracking as well as control of powdery mildew.

 

 

VI.    Insect and Mite management. (Dr. D.S. Yadav)

 

Growth Stage: Berry development stage to veraison after October pruning

1.       Mealybug, thrips, mites and caterpillar population may be noticed due to favourable weather conditions.

2.       Buprofezin 25 SC @ 1.25 ml per litre water (PHI 65 days) or spirotetramat 15.31 OD @ 280 ml per acre (PHI 60 days) are effective against mealybugs. Soil drenching with clothianidin 50 WDG (PHI 60 days) may also be given for mealybug management. Entomogenous fungus such as Metarhizium, Beauveria and Lecanicillium can be used for plant wash to reduce mealybug populations. If PHI with above insecticides is not available, then spot plant wash with trisiloxane polyether surfactant @ 0.3 ml per litre water with 10-12 litre water per plant to remove mealybug and honeydew from plant and bunches in the field can be given followed by wash with water.

3.       Remove excess shoot growth to manage thrips. If pesticide application is necessary, then abamectin given for the management of mites will also control thrips.

4.       Emamectin benzoate 5 SG @ 88 gram per acre or cyantraniliprole 10 OD @ 0.7 ml per litre water is effective against Spodoptera caterpillars and thrips.

5.       Bunch webbing caterpillars may start damaging bunches in most of the grape areas where humidity is high. The most effective way to control them is to collect and kill them by hand as insecticides may not reach inside the bunch. The caterpillars on leaves are also needs to be killed as they can go inside the bunch later on. Spraying of emamectin benzoate 5 SG @ 0.22 gram per litre water or cyantraniliprole 10 OD @ 0.7 ml per litre is effective to manage them.

6.       Mite infestation may increase in most of the grape areas. Sulphur 80 WDG @ 1.5-2.0 g/L or Abamectin 1.9 EC @ 0.75 ml/L (PHI 30 days) or Bifenazate 22.6 SC @ 0.5 ml/L (PHI 30 days) water may be applied if mite infestation is observed.

7.       Some areas may see aphid infestation on bunches. Imidacloprid 17.8 SL @ 0.4 ml per litre (PHI 60 days) may be sprayed.