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Sharma A.K.,ICAR Central Potato Research Station | Kumar V.,ICAR Central Potato Research Station | Pandey K.K.,ICAR Central Potato Research Institute
Potato Journal | Year: 2016

The conventional system of seed potato production involving clonal multiplications is being replaced with micro-propagation techniques (hi-tech system) on account of numerous advantages possessed by the later. High hills of northwestern India are ideally suited for the production of breeder seed potatoes. Thus, nucleus and breeder seed potatoes for the hilly regions of India are produced at Central Potato Research Station, Kufri (Fagu), Shimla hills at an average altitude of 2700m above mean sea level. Since 2008, seed potato production through micro-propagation techniques has also been introduced at the station. To know the comparative efficiency of both the systems of seed potato production, a study was conducted during 2011 and 2012 involving the important cultivars of the region. The study revealed that both the systems of seed potato production proved equally good with regard to plant growth vigour, disease freedom as well as for the tuber number of tubers and productivity. It can be attributed to the slow rate of degeneration of seed stocks in either of the production systems due to low vector pressure prevailing in high hills of north-western India. Among the cultivars, Kufri Himalini recorded the maximum yield with minimum number of tubers per ha while Kufri Girdhari had the maximum number of tubers with mini-yields. © 2016, Indian Potato Association. All rights reserved.

Mehta A.,ICAR Central Potato Research Station | Singh B.,ICAR Central Potato Research Station | Singh B.,ICAR Central Potato Research Institute
Indian Journal of Horticulture | Year: 2016

Heap storage of potatoes is commonly used in many states of India to avoid distress sale at harvest, but the losses in stored potatoes are generally enormous. Spray application of CIPC (isopropyl N-(3-chlorophenyl) carbamate) at the time of storage has been recommended to inhibit sprouting and reduce total losses in potatoes up to 90 days of storage in heaps. Sprouting in tubers was inhibited and total losses in potatoes were reduced (by 58.7%) up to 90 days of storage (temp. 19–31°C, 55–90% RH) during March to June. The farmers could market 6.5% more weight of CIPC treated potatoes (cv. Kufri Pukhraj) compared to the control (untreated) tubers due to reduced total losses and fetch 55.3% higher market price than the price at the time of harvest. In processing cultivar, Kufri Chipsona-1, reducing sugar concentrations decreased from 188.1 to 22.5 mg/100 g fresh weight during storage up to 90 days and chip colour improved significantly. Stored potatoes were found highly acceptable for processing by an industry collaborator (M/s Satnam Agri Products Ltd., Jalandhar) and were used in making good quality flakes and French fries. Findings established that the improved storage technology can beneficially be used to increase remunerations from potato cultivation and to preserve the quality of processing potatoes for three months at lower storage cost. © 2016 Horticulture Society of India. All Rights reserved.

Manorama K.,ICAR Central Potato Research Station | Govindakrishnan P.M.,ICAR Central Potato Research Station | Govindakrishnan P.M.,ICAR Central Potato Research Institute | Ravichandran G.,ICAR Central Potato Research Station
Indian Journal of Horticulture | Year: 2016

A decision support tool has been developed for providing information on the optimum time of planting and the likely consequences of early or late planting of potato in about 173 locations of Nilgiris region of Tamil Nadu state in India. This DSS was developed for the most popular variety of the region i.e., Kufri Jyoti, and the choice to select right time of harvest is also incorporated in this DSS by simulating the yields at 100 and 120 days. The tool consists of a database of simulated yield at 100 and 120 days after planting derived through InfoCrop-potato model. This DSS is developed with the database generated using the daily weather data developed through weather generators and the potential yields estimated with the help of InfoCrop-Potato model. These data were generated by running the model under rainfed conditions for five dates of planting using the weather data for each location generated through weather generators. A user interface was developed in Visual Basic to access this database. The DSS developed for the purpose of potato crop scheduling is of great significance, which enables the farmers as well as extension functionaries for taking right decisions on timing the planting and harvesting of potato crop on which the major fraction of Nilgiri's economy depends. The simulated results when compared with the actual data and a good degree of correlation was observed between two. © 2016 Horticulture Society of India. All Rights reserved.

Mehta A.,ICAR Central Potato Research Station | Singh B.,ICAR Central Potato Research Institute
Potato Journal | Year: 2015

Considerable quantities of potato (Solanum tuberosum L.) are transported to different consumer centers through out the country and also exported to neighboring countries. Sprouting of potatoes is the major post-harvest limiting factor. Sprout inhibition treatment with isopropyl 3-chlorophenyl carbamate (CIPC) was evaluated under ambient conditions (20 to 35°C, 44 to 86% RH) in five potato varieties viz. Kufri Chipsona-1, Kufri Surya, Kufri Jyoti, Kufri Pukhraj and Kufri Bahar after harvest and after storage at 2-4°C for four months. CIPC treatment (15 and 20 mg a.i./kg tuber weight) significantly reduced sprouting and total losses in freshly harvested potatoes of all the varieties up to 60 days. Whereas in cold stored potatoes, CIPC treatment was effective at higher concentrations (25 and 30 mg a.i./kg tuber weight) in only two varieties. Nevertheless, the treatments could usefully extend the shelf life of potatoes by 30 to 45 days. CIPC treatment reduced sugar contents and improved the chip colour. Freshly harvested potatoes of Kufri Chipsona-1 can be marketed as table as well as processing potatoes, while other cultivars were suitable for table purpose only. Cold stored potatoes can be marketed only as table potatoes. CIPC residues were below the permissible limits and potatoes were safe for human consumption. The information is of high practical utility to market/export potatoes to distant markets. © 2015, Indian Potato Association. All rights reserved.

Singh S.K.,ICAR Central Potato Research Station | Lal S.S.,ICAR Central Potato Research Institute
Potato Journal | Year: 2015

The area under autumn/early potato crop in Bihar is around 15%. The productivity of early potato crop is very low due to high temperature prevailing during growth and development period of the crop. Kufri Surya, a heat tolerant variety of potato developed by Central Potato Research Institute, Shimla, performs better than other varieties when temperatures are higher during planting and early growth period. The field trials were conducted in randomized block design during autum/ winter season of 2011-12 and 2012-13 at farmer’s fields in participatory mode with the objective to assess the suitability of potato variety Kufri Surya for early planting under warmer condition in the Sone riverbed of Patna district in Bihar. The potato variety Kufri Surya recorded higher emergence percentage, significantly taller plants, more number of leaves per plant, higher LAI as compared, to potato cultivar Lal Gulab. It also produced highest total tuber yield, aggregate tuber population, average tuber weight, nutrient uptake, gross return and net return with recommended package of practices. Kufri Surya also produced 26.4% and 5.7% higher total tuber yield and total tuber number, respectively as compared to potato variety Lal Gulab at farmer’s management level. It also recorded 50.5 and 63.2% higher marketable tuber yield at farmer’s management and improved package of practice, respectively. © 2015, Indian Potato Association. All rights reserved.

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