Weather Forecast Based Grape Advisory

Likely weather for next 7 days: 26.3.2014 (Wednesday) to 2.4.2014 (Wednesday)

Advisory on plant protection        Advisory on pest management   Advisory on management of stem borer   

Advisory on pest management during grapevine resting period

Advisory on pest management after foundation pruning

Advisory for irrigation in hail storm affected vineyards

गारपीटग्रस्त द्राक्षबागामध्ये पाण्याच्या वापरासंदर्भात सल्ला

Advisory based on monitoring of pesticide residue

 

 

Likely weather for next 7 days: 26.3.2014 (Wednesday) to 2.4.2014 (Wednesday)

Parameter

Nasik area

Sangli

Solapur area

Pune  area

Bijapur

Rangareddy

(Hyderabad)

Cloud cover

Clear

Sometime cloudy

Clear

Clear

Sometime cloudy

Clear

 

Clear

Sometime cloudy

Clear

Sometime cloudy

Rainfall

 No rains

No rains

No rains

No rains

No rains

No rains

Temp oC

Min.

Max.

 

20-22

37-38

 

23-24

38-39

 

26-28

39-41

 

20-22

38-39

 

25-27

39-40

 

22-25

39-41

RH (%) Max.

Min.

 

29-34

11-15

 

26-42

11-15

 

20-28

11-15

 

25-38

14-19

 

22-33

11-15

 

25-35

13-16

Wind

10-15

km/hr

10-15

km / hr 

 

10-15-25

Km / hr.

 

10-15

 km/ hr

 

10-15

km / hr.

sometimes up to 25 -30 km/hr.

 

 

10-15

km / hr.

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

http://www.weather.nic.in/current.htm , http://www.imd.gov.in/section/nhac/wch/todaywch.htm , http://www.imd.gov.in/section/nhac/distforecast/INDIA.htm

http://wxmaps.org/pix/prec6.html ,

http://www.accuweather.com/world-forecast.asp?partner=accuweather&traveler=0&locCode=ASI|IN|IN021|JUNNAR&metric=1 , http://fallingrain.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.

 

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

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Plant protection Guidelines

Growth Stage (Days after pruning)

Likely disease risk

Downy mildew

Powdery mildew

Bacterial leaf spot

Rust

  150 days of fruit pruning

Nil

Medium

Nil

Nil

  

In most areas clear sky will be present most of the times. However occasionally partially cloudy conditions may prevail. There will be no rains at any location. Sangli Solapur and Bijapur where drying gapes for raisin making is being done, humidity will be very low and occasionally windy conditions will be present. These conditions will help proper drying of grapes and raisins dried during this period will be of better quality.

 

Crops very close to harvesting stage especially in Nasik area when exposed to cloudy conditions may get powdery mildew on bunches if previously high incidence of powdery mildew was recorded in the vineyards. Be watchful and spray Sulphur 80WG 1.0 g / L with fine sprayers at first appearance of symptoms. Spraying of irrigation water with pH > 8 will also reduce the powdery mildew and suppress the growth on rachies.

 

In hailstorm affected areas hail damaged canes many places have started showing emergence of new shoots. Such shoot developments indicate active roots, hence back pruning in such vineyards should be taken immediately. Do not expose the vineyards to any moisture stress by giving required irrigation. If the vineyard is not pruned immediately fungal infections may enter in the stem through wounds and reach up to cordons. Immediately after pruning spray of copper based fungicides (Bordeaux Mixture 0.5%, or COC 50WP, 3.0 g / L or Copper hydroxide 1.5 g / L) may be essential to prevent secondary infections through pruning wounds. Next week continuous conditions of high RH and cloudy conditions are likely which may be favourable for such infections.

 

 

 

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Weather forecast based pest advisory for March 26-April 1, 2014

वृद्धि अवस्था (फॉरवर्ड प्रूनिंग के पश्चयात)

संभावित पीडक जन्तु जोखिम

थ्रिप्स

माइट्स

केट्र्पीलर्स

मिलीबग्स

जेसीड्स

>120

कम

मध्यम से अधिक

कम

मध्यम से अधिक

कम

 

सांगली, नासिक, सोलापुर, पुणे और बीजापुर अंगूर क्षेत्रों मेँ हाल ही में हुई औलवृष्टि एवं बारिश के कारण माइट और मिलिबग के विकास में कमी हुई है। उन क्षेत्रों में, जहां बारिश कम हुई है, माइट का प्रादुर्भाव देखा जा सकता है। माइट के नियंत्रण के लिए गन्धक 80 डब्लूडीजी @ 1.5-2.0 ग्राम प्रति लिटर पानी (पी॰ एच॰ आइ॰ 15 दिन) का प्रयोग किया जा सकता है।

Growth Stage (Days after forward pruning)

Likely Pest Risk

Thrips

Mites

Caterpillars

Mealybugs

Jassids

>120

Low

Moderate to High

Low

Moderate to High

Low

 

Mealybug and mite incidence have reduced due to recent rainfall and hailstorm experienced in Sangli, Nashik, Solapur, Pune and Bijapur areas of grapes. The mite population may increase in areas which received comparatively less rainfall and escaped damage due to heavy rains and hails. Sulphur 80 WDG @ 1.5 -2.0 g/L water (PHI 7 days) can be used where mite infestation is noticed.

 

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.

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Weather forecast based pest advisory for March 26-April 1, 2014: Stem borer

 

Two species of stem borer, Celosterna scabrator and Stromatium barbatum were noticed from vineyards in Sangli, Solapur, Latur, Usmanabad, Sangli and Satana (Nashik) grape growing regions. Celosterna scabrator grubs remove frass from stem and the leaves of infested vines shows characteristic interveinal chlorosis (Photo 1). However, Stromatium barbatum grubs do not remove frass and convert the wood into fine powder (Photo 2). Stromatium barbatum infestation is seen more on stressed vines which have dead wood formation.

123    455

Both species of stem borer are under active feeding stage (grub) of its life cycle during this period. Those farmers who are uprooting the old vineyards for fresh planting, should ensure that the woods are disposed off by burning before rainy season. Otherwise, during rainy season the adults of stem borer will lay eggs and spread infestation to other vineyards. Presently, no control measure can be initiated against Stromatium barbatum, however, for the control of Celosterna scabrator, a biological named Metarhizium anisopliae @ 100 ml/L water can be injected into galleries made by Celosterna scabrator grubs.

 

Weather forecast based pest advisory for March 26-April 01 2014:Grapevine resting period

वृद्धि अवस्था (फॉरवर्ड प्रूनिंग के पश्चयात)

संभावित पीडक जन्तु जोखिम

थ्रिप्स

माइट्स

केट्र्पीलर्स

मिलीबग्स

जेसीड्स

तुड़ाई पश्चात का समय

कम

अधिक

कम

अधिक

कम

 

सभी परिस्थितियां माइट और मिलिबग विकास के लिए उपयुक्त हैं। माइट के नियंत्रण के लिए गन्धक 80 डब्लूडीजी @ 1.5-2.0 ग्राम प्रति लिटर पानी का प्रयोग किया जा सकता है। मिलिबग के नियंत्रण के लिए बुप्रोफेज़िन 25 एससी @ 1.25 मिलि प्रति लिटर पानी का प्रयोग किया जा सकता है।

 

Growth Stage (Days after forward pruning)

Likely Pest Risk

Thrips

Mites

Caterpillars

Mealybugs

Jassids

Grapevine resting period after harvest

Low

High

Low

High

Low

 

All conditions are favourable for the mite and mealybug development in grape areas. Sulphur 80 WDG @ 1.5 -2.0 g/L water can be used where mite infestation is noticed. For the management of mealybugs, spot application of Buprofezin 25 SC @ 1.25 ml/L water can be given.

 

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.

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Weather forecast based pest advisory for March 26-April 1, 2014: After foundation pruning

वृद्धि अवस्था (फॉरवर्ड प्रूनिंग के पश्चयात)

संभावित पीडक जन्तु जोखिम

थ्रिप्स

माइट्स

केट्र्पीलर्स

मिलीबग्स

जेसीड्स

0-15

नहीं

नहीं

नहीं

मध्यम से अधिक

नहीं

16-30

अधिक

नहीं

मध्यम

मध्यम से अधिक

मध्यम

 

मिलिबग के नियंत्रण के लिए मिथोमिल 40 एस पी @ 1.0 ग्राम प्रति लिटर या बुप्रोफेज़िन 25 एससी @ 1.25 मिलि प्रति लिटर पानी का प्रयोग किया जा सकता है। थ्रिप्स एवं केट्र्पीलर्स दोनों को नियंत्रित करने के लिए इमामेक्टिन बेन्ज़ोयट 5 एसजी @ 0.22 ग्राम/लीटर की दर से छिड़काव किया जा सकता है।

 

Growth Stage (Days after foundation pruning)

Likely Pest Risk

Thrips

Mites

Caterpillars

Mealybugs

Jassids

0-15

Nil

Nil

Nil

Moderate to High

Nil

16-30

High

Nil

Moderate

Moderate to High

Moderate

 

For the management of mealybugs, spot application of Methomyl 40 SP @ 1.0 g/L or Buprofezin 25 SC @ 1.25 ml/L water can be given. To control both thrips and caterpillars, application of emamectin benzoate 5 SG @ 0.22 g/L water is helpful.

 

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.

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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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