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मौसम पूर्वानुमान आधारित साप्ताहिक सलाह

Weather Forecast Based Weekly Advisory

 

 (Assumption: Pruning date-15/04/2016)

 

I.        Weather Data for the Prevailing Week

 Thursday (22/09/2016)--Thursday (29/09/2016) 

Location

Temperature

Possibility of Rain

Cloud Cover

Wind Speed

(Km/hr)

         R H%

           

Min

Max

Min

Max

Nashik

   22-23

27-29

Thu, Mon-Tue Medium Rain

Nasik, Ojhar, Pimpalgaon Baswant, Vani, Palkhed.

Thu, Sat Light  Rain and

Mon  Good Rain

Shirdi, Loni, Rahata.

Thu-Thu Medium Rain to Good Rain

Niphad, Kalwan, Devla,

Thu-Sat, Mon-Tue Light Rain Dindori.

Thu-Sun, Tue    Medium Rain and Mon, Thu     Good Rain

Satana

Cloudy

03-16

76-79        

94-96

Pune

   22-23

 27-28

Thu-Wed Good Rain

Pune, Phursungi.

Thu-Mon     Light Rain and

Tue-Wed     Good Rain

Narayangaon, Junnar.

Sun-Mon Good Rain

Loni Kalbhor, Uruli Kanchan

Yavat, Rahu, Patas, Pargaon, Supa.

Thu-Thu Light  Rain

Baramati.

Cloudy

08-18

77-83         

90-96

Solapur

   22-23

27-29

Thu, Sun-Mon Good Rain and

Sat Light  Rain 

Solapur, Nanaj, Kati.

Thu-Thu    Light Rain

Vairag.

Sun-Mon  Medium Rain and

Thu-Sat, Tue-Wed     Light Rain  Barshi, Pangri, Kari, Pandharpur, Kasegaon.

Thu-Mon    Good Rain

Latur, Ausa, Osmanabad, Tuljapur

Thu,Mon-Tue Good Rain and

Fri-Sat     Light  Rain

Atpadi

Cloudy

11-18

69-80        

92-95

Sangli

    22

 26-27

Thu, Sat-Tue Medium Rain and

Fri  Good Rain

Sangli, Miraj, Shirol, Arag.

Thu-Sat, Mon  Good Rain and

Sun, Tue   Light  Rain 

Shirguppi, Kagvad

Thu-Sun Medium Rain and Mon-Tue Light  Rain 

Kavate Mahankal

Thu, Sun-Tue  Good  Rain  and

Fri-Sat              Light  Rain 

Palsi, Vite

Thu-Sat     Light  Rain  and

Sun-Mon   Good Rain 

Palus,Valva, Tasgaon, Shetfal

Thu-Mon   Good Rain

Khanapur

Cloudy

11-26

74-87

93-96

Bijapur

    22

26-28

Sat   Medium Rain and

Mon  Good Rain

Bijapur, Tikota, Telsang,

Thu- Sat       Light Rain and

 Sun- Tue     Good Rain

 Chadchan

Cloudy

11-29

67-85        

93-96

Hyderabad

  21-22

25-28

Thu- Sun    Light Rain

Hyderabad, Medchal.

Thu-Mon    Good Rain

 Zahirabad.

Cloudy

08-18

75-90        

95-100

 

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

http://www.imd.gov.in/, http://wxmaps.org/pix/prec6.html, http://www.fallingrain.com/world/IN/, http://www.wunderground.com/, http://www.bbcweather.com-weather/1269750, etc.

II.      a) Days after pruning: 90-150 days

b)        Expected growth stage of the crop: Build-up of storage

         

III.     Water management (Dr. A.K. Upadhyay)

Expected pan evaporation: : 0-4 mm

 

 

Amount of irrigation advised:

Foundation pruning season: In general there will be no need to apply irrigation as the soils are already at field capacity (wapsa condition).  Irrigate the vineyard only if the vines start showing moisture stress i.e. leaf cupping/ curling.  Then, apply irrigation through drip @ 2240 litre/acre/day. 

 

IV.     Soil and Nutrient requirement (Dr. A.K. Upadhyay)

 

121 days upto Fruit pruning

  1. The vineyards where sodicity problems are there, apply gypsum to the soil for removal of sodium from the soil exchange complex.  In case of calcareous soils, use sulphur for similar purpose.

  2. In case pruning is scheduled during October, green manuring with Sunnhemp / Dhaincha is advised.  In sodic soils, dhaincha is preferred.

  3. Remove plastic/ organic mulch and loosen the soil for improving movement of water through the root zone to reduce salts accumulated in the root zone.  Organic mulch can be mixed in the soil to improve the porosity of the soil. 

  4. If Fruit pruning is planned during September, go for soil and water testing for proper nutrient and water management.

 

Fruit pruning season

  1. Before fruit pruning: Apply FYM/ compost/other organic sources including green manuring atleast 12-15 days before fruit pruning.  If possible mix 200 kg Single super     phosphate in the FYM and apply in the soil.   Application of organics improves the nutrient and water retention in the root zone and reduces nutrient losses from the profile If soils are calcareous in nature, then apply 50 kg sulphur between the vines in the soil. The sulphur should be properly mixed in the soil for improving its efficacy in taking care of calcium carbonates.  Mixing of sulphur in organics lead to better utilization of sulphur for reducing calacium carbonate in the root zone along with reduction in soil pH also.

  2. During shoot growth stage, apply irrigation through drip @ 6800 L/ acre/ day.  However, in case of rains, if wapsa condition is there, then postpone irrigation water application for a day or two atleast depending upon soil type.  Further, in case vigour is more than desired, reduce irrigation water application by half to 3400 L/ acre.

  3. Based upon the soil test value, during shoot growth stage apply urea @ 15kg / acre this week in two splits.    If the soil is calcareous, instead of urea apply ammonium sulphate @ 20 kg/ acre in two splits this week.  Depending upon the crop vigour, regulate nitrogen application.

  4.  If sodicity problem is there, apply 10 kg Sulphate of potash per acre in 2 splits this week.

V.      Requirement of growth regulators (Dr. S.D. Rameteke)     

 

VI.    Any specific recommendation for canopy management (Dr. R.G. Somkuwar)

 

VI.   Disease management (Dr. S.D. Sawant and Dr. Sujoy Saha)

 

 

VII.    Insect and Mite management. (Dr. D.S. Yadav and Dr. B. B. Fand)

Risk levels of different insects

Thrips

Caterpillar

Mealybug

Jassids

Flea beetle

Mites

Low

High

Moderate to High

Low

Low

Moderate to High

   As high relative humidity coupled with moderate to high rains and cloudy conditions will prevail in most of the grape growing areas, the caterpillar (Spodoptera litura) infestation may continue. Spodoptera litura Nuclear Polyhedrosis Virus (SlNPV) @ 250 LE/ha may be used for biological control of these caterpillars. Alternatively, emamectin benzoate 5 SG @ 0.22 g/liter water can be given.

 

   With high relative humidity, the activity of mealybug natural enemies such as predatory coccinellids and parasitoids will increase and help in reducing mealybug population. Avoid spraying broad spectrum insecticides to conserve these natural enemies. If ant population is noticed, application of entomogenous fungi, Metarhizium anisopliae @ 106 cfu/ml can be given. The prevailing high humidity will help in establishing this entomogenous fungi and managing both ants and mealybugs.

   Removal of loose bark on stems and cordons before fruit pruning and plant wash with Buprofezin 25 SC @ 1.25 ml/L water (1 to1.5 L water/vine) will help to minimise the mealybug inoculum and thus will help in healthy growth of new sprouts and shoots.

   As the canopy is growing older in vineyards where fruit pruning is yet to be done, mite incidence may be high due to favourable crop and weather conditions. For the management of mites, sulphur 80 WDG @ 2.0 g/L water is effective. 

   Excess shoot growth due to high humidity and rainy conditions may help to build up thrips population and reduce coverage during insecticide applications, therefore, excess shoot growth should be removed to reduce thrips incidence.

   Heavy weed infestations due to rains increase caterpillar and mite populations. Hence, keeping vineyards free from weeds will help in reducing their infestations.

 

Crop advisory relevant to different places is prepared by experts, considering forecasted weather, crop growth stages in majority of vineyards and ground information on incidence of different conditions in different grape growing areas received from regular interaction with progressive grape growers. No claims are made on its correctness.

Usefulness of this information may be communicated to us at director.nrcg@icar.gov.in.