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Jalgaonkar V.N.,Regional Fruit Research Station | Chavan S.A.,Regional Fruit Research Station
Pestology | Year: 2011

Flower thrips considered to be minor pest of cashew is now becoming very serious pest in cashew growing tract of Maharashtra and Goa causing considerable yield losses. To knowing the importance of pest, it is necessary to evaluate newer insecticides against flower thrips. Hence, the study was conducted in 2007-08 at Regional Fruit Research Station, Vengurle, Dist. Sindhudurg (M.S.). On the evidence of data it is found that the treatment T 4 (Lambda-cyhalothrin 0.003%) was found most effective treatment for management of thrips in cashew followed by treatment T 3. (Triazophos 0.01%) in nut and apple stages.


Salvi S.P.,Regional Fruit Research Station | Mule R.S.,Regional Fruit Research Station | Gawankar M.S.,Agriculture Research Station
Pestology | Year: 2016

Maharashtra state is nowadays known as the economic power of the country. Climate change makes agriculture more difficult to sustain with higher frequencies of changing temperature, erratic rainfall, increased salinity as well as a rise in sea level. These phenomena have direct impact on crop yield and quality of produce also. The various weather parameters effect on cashew nut yield. So far few studies were conducted in this direction and none of them indicated that critical periods of nut development during which weather factors play a critical role. A survey was conducted under South konkan region of Maharashtra for the year 2006-07 to 2014-15 with an objective to find out the relationship between the total yield of cashew nut influenced by various weather parameters viz., temperature, relative humidity, rainfall received and number of rainy days. The present study on weather parameters indicated that the rainy days in preceding rainy season proved the immediate determinant of yield in cashew production. The rainy days during May are considerably low and moderately high during June. This situation provides a scope of studies to the role of irrigation to cashew orchard during this particular period by modern methods such as drip irrigation.


Zote V.K.,Regional Fruit Research Station | Gajbhiye R.C.,Regional Fruit Research Station | Salvi S.P.,Regional Fruit Research Station
Pestology | Year: 2016

A field survey was carried out to find out the predatory species of spider of cashew tea mosquito bug (Helopiltis antonii) during the year 2014-15at AICRP - cashew Regional Fruit Research Station Vengurle. The data revealed that total 18 species of 6 six different family observed in cashew orchard during the year 2014-15.The family oxyopidae (269 individual), salticidae (160 individual) are the most pre dominate spider family observed in cashew however the family Clubionidae and Gnaphosidae recorded less than five individual. The spider Telamonia dimididata (Salticidae) and Oxyopes shweta (Oxyopidae) was the major predator of cashew tea mosquito bug. The season of occurrence the spider of 9 species collected during summer season, 15 species collected during monsoon season and 9 species during winter season, while six species collected throughout the year.


Jalgaonkar V.N.,Regional Fruit Research Station | Chavan S.A.,Regional Fruit Research Station | Patil P.D.,Regional Fruit Research Station | Naik K.V.,Regional Fruit Research Station
Acta Horticulturae | Year: 2015

A field study was conducted during 2004-2005, 2005-2006 and 2006-2007 to know the effectiveness of the newer insecticides for management of tea mosquito bug Helopeltis antonii Sign. in cashew at the Regional Fruit Research Station Vengurla, Dist-Sindhudurg. The efficacy of four different insecticides was studied against tea mosquito bug in comparison with recommended spray schedule. On the basis of 3-year pooled data among the different insecticides sprays at flushing, flowering and fruiting stages, Treatment T4 (0.003% Lambda cyhalothrin) was found significantly superior over the rest of the treatments followed by Triazophos, which was at par with Profenophos, but Profenophos was at par with Chlorpyriphos. However, pesticide Lambda cyhalothrin was found effective and profitable cost wise with recommended spray schedule.


Jalgaonkar V.N.,Regional Fruit Research Station | Chavan S.A.,Regional Fruit Research Station | Patil P.D.,Regional Fruit Research Station
Acta Horticulturae | Year: 2015

Field screening to natural infestation of tea mosquito bug was done for seven consecutive years, in total 18 cashew accessions consisting of released cultivars, promising hybrids and other accessions. The screening trail was conducted at the Regional Fruit Research Station, Vengurle during the years 2004-05 to 2010-11. The damage to the shoot, panicle and nut surface was assessed by scoring in the 0-4 scale system. The result indicated that all the accession are susceptible to tea mosquito bug infestation with not any resistant/tolerant to the target insect pest. The intensity of percent infestation was found to vary among the accessions.


Jalgaonkar V.N.,Regional Fruit Research Station | Chavan S.A.,Regional Fruit Research Station | Patil P.D.,Regional Fruit Research Station | Naik K.V.,Regional Fruit Research Station
Acta Horticulturae | Year: 2015

A field study was conducted to find out the effective insecticides in combination with water and kerosene for the management of cashew stem and root borer, Plocaederus ferruginous L. during year 2007-08 at the Regional Fruit Research Station Vengurle, Dist. Sindhudurg. (M.S.). Fifteen trees were treated with each treatment. The data indicated that the minimum percent of larval mortality in fifteen different treatments including control ranged from 20.00 to 100.00. The result indicated that the treatment T1 (10 ml Chloropyriphos + 50 ml kerosene) and T5 (10 ml of DDVP + 50 ml kerosene) was effective treatment and economical in control of cashew stem and root borer followed by T2 (5 ml Chloropyriphos + 40 ml kerosene) and T6 (10 ml DDVP + 40 ml kerosene) (90%).


Jalgaonkar V.N.,Regional Fruit Research Station | Sawant B.N.,Regional Fruit Research Station | Chavan S.A.,Regional Fruit Research Station | Patil P.D.,Regional Fruit Research Station
Acta Horticulturae | Year: 2015

A field experiment was conducted to monitor the pest infestation of thrips of cashew in relation to weather parameters for three years from 2004 to 2006. The observations were recorded for fortnightly intervals at the Regional Fruit Research Station, Vengurla (Maharashtra). Analysis of path coefficient analysis was carried out to understand the direct and indirect effect of the individual weather parameter on the incidence of thrips in cashew. The prediction equation was developed by using multiple regression analysis with respect of thrips infestation. The thrips population was negligible below 18±1°C. The maximum population was observed in between 18±1°C to 21±1°C and it declined after winds minimum temperature. Whereas, regarding afternoon humidity, thrips population was found to be negligible below 53±1%. Whereas, maximum population was observed in between 53±1% to 64±1% then afterwards it declined. The pest infestation was high during the period of flushing and flowering which coincide with the winter season (January to March). The regression equation accounted for more than 89% variability in thrips population when the data were pooled for all the three years.


Salvi S.P.,Regional Fruit Research Station | Salvi B.R.,Regional Fruit Research Station
Ecology, Environment and Conservation | Year: 2014

The experiment was laid out to evaluate chewing type of mango varieties as well as the performance of mango varieties ideal for juicy purpose at Regional Fruit Research Station, Vengurle. The study was conducted with six different mango varieties, viz. Amrapali, Benganpalli, Pairi, Pulihara, Suvarnrekha and Karutha Kolumban with the parameters like vegetative, flowering, fruiting, yield attributes and physico- chemical properties. From these studies it reveals that, Suvarnrekha, Amrapali and Benganpalli have shown good yield attributes as compared to Pairi. However, in physico-chemical properties Benganpalli and Suvarnrekha were performing very well compared to Pairi. Amrapali, Suvarnrekha and Pairi have excellent taste compared to rest of the mango varieties under study. From the above study it could be concluded that, out of six mango varieties tasted for juicy type Pairi, Amrapali, Benganpalli and Suvarnrekha are found good and economically profitable for commercial cultivation. Copyright © EM International.


Patil P.,Regional Fruit Research Station | Dalvi M.,Regional Fruit Research Station | Salvi B.,Regional Fruit Research Station
Plant Archives | Year: 2014

The experiment was conducted by using eight different treatments with three replications at RFRS, Vengurle on Alphonso mango cultivar by using different fungicides. It is revealed from the data that all the seven fungicides at their concentration when sprayed twice at 10 days interval effectively controlled natural incidence of blossom blight as compared to control. Among the different treatments, the treatments viz. Carbendazim + Mancozeb (0.2%), Thiophanate methyl (0.1%), Propineb (0.2%), Carbendazim (0.1%) and Tricyclazole (0.1%) were found significantly superior over rest of the treatments and were at par with each other. These were followed by Chlorothalonil (0.2%) and Mancozeb (0.2%) which were also at par with each other. © 2014, Plant Archives. All rights reserved.


Patil P.,Regional Fruit Research Station | Dalvi M.,Regional Fruit Research Station | Salvi B.,Regional Fruit Research Station
Plant Archives | Year: 2014

Development of resistance to pesticide in bacterial plant pathogens is one of the great concern for the control of bacterial diseases. Pesticidal resistance in plant pathogenic bacteria is known to occur in Israel, Lebanon, Newzealand, USA, Argentina, Brazil, Taiwan, Tongo and India, which posses serious threat in bacterial disease management. Existence and severity of bacterial blight of brinjal, season after season, in southern and western Maharashtra is a serious concern. India in spite of pesticidal sprays speculated the development of pesticidal resistance in the causal bacterium Ralstonia solanacearum. Bacteria in this region have been observed to develop resistant to streptomycin, Terramycin, Copper-oxychloride, Dithiocarbamate and Copper-oxychloride + Streptomycin with various mutation frequency. These pesticide resistant mutants were vigorous in growth and Pathogenicity like the native Ralstonia solanacearum population and therefore posses a challenge in the management of bacterial blight of brinjal. © 2014, Plant Archives. All rights reserved.

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