Weather Forecast Based Grape Advisory

Likely weather for next 7 days: 19.11.2014 (Wednesday) to 26.11.2014 (Wednesday)

Parameter

Nasik area

Sangli

Solapur area

Pune  area

Bijapur

Rangareddy

(Hyderabad)

Cloud cover

Clear.

Clear. Cloudy on Fri-Sun.

Clear.Partly cloudy on Fri.

Clear. Partly cloudy on Sat.

Clear. Partly cloudy on Thus-Fri

Clear. Partly cloudy upto Fri

Rainfall

No rain at any places.

No rain at any places.

No rain at any places.

No rain at any places.

No rain at any places.

No rain at any places.

Temp oC

Min.

Max.

 

16-18

29-31

 

17-20

30-32

 

18-22

30-33

 

17-18

29-31

 

18-20

29-31

 

16-17

29-31

RH (%) Max

Min.

 

34-56

26-43

 

65-72

41-45  

 

54-70

39-49

 

61-80

36-50

 

62-76

40-43

 

78-89

34-50

Wind

3-10

km/hr

3-14

km / hr 

 

3-13

km/ hr.

3-12

km/ hr.

3-19

km / hr.

 

2-13

km / hr.

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.accuweather.com

http:// http://www.wunderground.com/

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 diseases in different grape growing areas received from regular interaction with progressive grape growers. No claims are made on its correctness.

 

Weather forecast based pest advisory for Nov 19-26, 2014

Growth Stage (Days)

Likely Pest Risk

Thrips

Mites

Caterpillar

Mealybug

Jassids

35-50 days after forward pruning

Moderate to High

Moderate to High

Low to Moderate

High

Moderate to High

 

Underside of older leaves should be examined for presence of webbings made by red spider mites. If the population build up is noticed then, spray of sulphur 80 WDG @ 2.0 g/L water is effective. After spraying these webbings should be examined with the help of hand lens for the presence of live mites to ascertain efficacy of the pesticide application.

Thrips population may start declining presently; however, care should be taken in the vineyards where berry setting/initial berry development is in progress. Monitoring for thrips should be done by tapping the shoots on white paper and counting number. The monitoring of thrips should be done during afternoon hours.

High jassid population may be noticed in the vineyards which are upto initial berry development. Monitoring for jassids should be done during 6-7 pm in the evening by gently holding the shoot and counting the numbers.

Fipronil 80 WG @ 0.05-0.06 g/L water or lambda cyhalothrin 5 CS @ 0.5 ml/L water are effective to manage thrips, jassid and caterpillars. However, fipronil should be used only once and before flowering stage. For thrips management at/after flowering stage, emamectin benzoate 5 SG @ 0.22 g/l water or cyantraniliprole 10 OD @ 0.7 ml/l water can be sprayed. For jassid management at/after flowering stage, buprofezin 25 SC @ 1.25 ml/l water can be sprayed. Light traps at the rate of one for four acres can installed to control jassids effectively. The light traps can also be made at home by using 160 w mixed light lamp as shown in the following photograph. The light traps should be switched on for four hours during 7-11 pm. It can also be advised to spray the insecticides during evening hours and installing minimum 100 w white light source at back side of the tractor which will attract leafhoppers towards spraying zone and will provide better management.

 

 light trap

Disclaimer: The bio-efficacy of insecticides mentioned above is based on the experiments conducted by NRCG. Their use by the farmers is restricted to their CIBRC label claim for various crops.

 

 Usefulness of the information on these pages may be communicated to us at dirnrcg@gmail.com

Management strategy against thrips in grapes in Nasik region

Advisory for irrigation in hail storm affected vineyards

गारपीटग्रस्त द्राक्षबागामध्ये पाण्याच्या वापरासंदर्भात सल्ला

Advisory based on monitoring of pesticide residue

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Advisory for irrigation in hailstorm affected vineyards

In most of the hailstorm affected vineyards defoliation has taken place. As a result of this the vines are being exposed to direct sunlight. Exposure of vines to direct sunlight under such conditions will lead to drying of permanent vine parts.  Further there has been sever injuries on vine parts and exposure to direct sunlight will further aggravate the problem of drying of arms etc.  and uneven bud break. Hence growers were advised to prune the vineyards early to reduce duration of the exposure to direct sunlight for longer duration.  The pan evaporation in these areas usually ranges from 7 to 8 mm/ day. Accordingly the irrigation requirement in the vineyards will range from 29400 to 33600 liters/ha/ day respectively. Since the vineyards in the affected regions are located in hotter area where the summer temperature goes beyond 40o C and there is scarcity of  irrigation water in these areas to  economies the irrigation water mulching should be used. It is also advised not to apply fertilizer in large doses as this may increase the root zone salinity. Hence fertilisers should be applied  in splits via irrigation water (fertigation).

गारपीटग्रस्त द्राक्षबागामध्ये पाण्याच्या वापरासंदर्भात सल्ला

गारपीट झालेल्या बहुतांश द्राक्षबागामध्ये पानग झालेली आहे आणि पानग झाल्यामुळे बागा थेट सूर्यप्रकाशामध्ये आलेल्या आहेत. बागा थेट सूर्यप्रकाशामध्ये आल्यामुळे झाडांच्या वेलींचे प्रमुख भाग कायमस्वरूपी वाण्याची शक्यता असते. तसेच गारपीट झाल्यामुळे झाडावरती खोल जखमा झालेल्या आहेत. झाडांना झालेल्या जखमा व थेट सूर्यप्रकाश यामुळे वेलींच्या मुख्य फांदया वाण्याची तसेच त्यावर एकसारख्या फूटी न निघण्याची समस्या वाढते. ह्या गोष्टी टाण्यासाठी शेतकऱ्यांनी आपल्या बागांची खरड़ छाटनी लवकरात लवकर घ्यावी, जेणेकरुन बागा थेट सूर्यप्रकाशामध्ये जास्त वे राहणार नाहीत. साधारणपणे गारपीट झालेल्या भागात पैन बाष्पिभवनाचा दर दिवसाला ७ ८ मिमी असा आहे. हयावरून असे दिसून येते की बागेमध्ये दिवसाला दर हेक्टरी २९,४०० ३३,६०० लि. पाण्याची जरूरी भासेल. गारपीट झालेल्या बहुतांश बागामध्ये उन्हायाचे तापमान ४० से. च्या वरती जाते, तसेच ह्या भागामध्ये पाण्याची पण कमतरता आहे, म्हणून बागेमध्ये पानी जास्त वे टिकुन राहण्यासाठी मल्चींग करणे गरजेचे आहे. खतांचा डोस जास्त प्रमाणात वापरल्यास झाडांच्या मुӀजव क्षारांचे प्रमाण वाढण्याची शक्यता असते. हे टाण्यासाठी खतांचा वापर टप्प्या-टप्प्याने विभागून करावा व शक्यतो खते ठिबक सिंचनाद्वारे पाण्यातुन घ्यावी.

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Advisory based on monitoring of pesticide residue

Status of Nation-wide pesticide residue monitoring in table grapes as on: 27/03/2014

No of samples analyzed

6828

No of Alerts issued

1074

No of Alerts revoked

177

No of effective alerts

897

% of failure of samples

13.1%

Major pesticides detected in 2014

* 4-bromo-2-chlorophenol (metabolite of Profenophos)

Abamectin

Hexaconazole

Chlormequat Chloride

Flusilazole

Chlorfenapyr

 

Since more than 50% of the samples failed so far are due to the detection of the non-recommended insecticide profenophos and its metabolite, the growers are advised to strictly adhere to the package of practices recommended by this institute in terms of pre-harvest interval (PHI) to minimize pesticide residue detections in grapes at harvest.

 

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