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Sharma, S. K.

Occurrence, Severity and Association of Fungal Pathogen, Botrydiplodia theobromae with Sudden Death or Decline of Tree Bean (Parkia timoriana, (DC.) Merr) in North Eastern India

Abstract Views :315 | PDF Views:113

Authors

A. Ratankumar Singh ¹, S. K. Dutta ¹, S. B. Singh ¹, T. Boopathi ¹, S. Lungmuana ¹, S. Saha ¹, Vishambhar Dayal ¹, Romila Akoijam ², S. K. Sharma ², N. Hemanta Singh ²

Affiliations
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Manipur Centre, Lamphelphat 795 004, IN

Source

Current Science, Vol 115, No 6 (2018), Pagination: 1133-1142

Abstract

Tree bean, Parkia timoriana is one of the most important perennial tree legume vegetable crops in north eastern region (NER) of India. Recently, sudden death or decline is emerging as a major constraint in the production of tree bean. The prevalence, intensity and etiology of this disease have not been extensively studied. The present work was aimed at studying the symptomology, severity and etiology of sudden death or decline of tree bean in the north eastern region of India. Typical symptoms of tree bean decline were initiated with wilting of half portion of the tree, excessive shedding of leaves, gradual drying up leading to death, and secondary infestation by insects on dead trees. The highest disease severity of 68.5% was observed in warmer regions like Kolasib, Mizoram. During survey, small bark borer was recorded in all districts and levels of infestation rate (holes/ft2 of log) reached maximum up to 25.49 in Hnanthial of Lunglei district. Young trees in the range 1–10 years with 57.32% (917 trees) of total trees (1600) infected were most susceptible to the disease compared to 12.58% (201 trees) infection in old trees in the range 21–30 years. The frequently associated pathogen with sudden death or decline of tree bean was identified as Botrydiplodia theobromae at the Indian Type Culture Collection, ICAR-IARI, New Delhi. It was the most aggressive species and proven to be pathogenic to tree bean following artificial inoculation.

Keywords

Botrydiplodia theobromae, North Eastern India, Parkia timoriana, Sudden Death or Decline Disease, Tree Bean.

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References

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Climate Resilient Agriculture in Manipur:Status and Strategies for Sustainable Development

Abstract Views :223 | PDF Views:77

Authors

S. S. Roy ¹, M. A. Ansari ¹, S. K. Sharma ¹, B. Sailo ¹, Ch. Basudha Devi ¹, I. M. Singh ¹, Anup Das ¹, D. Chakraborty ², A. Arunachalam ³, N. Prakash ¹, S. V. Ngachan ²

Affiliations
1 ICAR Research Complex for NEH Region, Manipur Centre, Imphal 795 004, IN
2 ICAR Research Complex for NEH Region, Umiam 793 103, IN
3 Indian Council of Agricultural Research, New Delhi 110 012, IN

Source

Current Science, Vol 115, No 7 (2018), Pagination: 1342-1350

Abstract

Manipur in India is endowed with rich biodiversity and abundant natural resources. Despite inaccessibility, marginality and heterogeneity, the state has made good progress in agriculture and allied sectors. About 80% of the state population depends on agriculture for livelihood. However, agriculture sector in Manipur is facing the consequences of climate change. Climate change is a reality and an increasing trend in temperature, precipitation and emission of greenhouse gases has been observed in Manipur. The state is also projected to experience more of extreme rainfall and reduction in crop yields. As subsistence level farming is coupled with prevalent shifting cultivation, the small and marginal farmers will be most affected due to climate change. Hence, there is an urgent need for devising climate proof plan and climate ready policy for climate compatible agricultural development in Manipur. Location-specific climate smart technology baskets need to be devised or introduced and should be demonstrated through participatory approach, for ensuring a climate resilient production system, and a climate resilient ecosystem. The interactions between the system’s adaptation strategies and the mitigation potential should also be given due importance in the action plan for combating climate change. This article deals with the present status of agriculture and allied sector and various technological and policy options for climate resilient agriculture in the hill and mountain ecosystems of Manipur.

Keywords

Climate Smart Agriculture, Climate Change, Northeast India.

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Litopenaeus vannamei (Boone, 1931), the Pacific Whiteleg Shrimp in River Cauvery

Abstract Views :301 | PDF Views:91

Authors

C. M. Roshith ¹, V. R. Suresh ¹, S. K. Koushlesh ¹, R. K. Manna ¹, S. K. Sharma ¹, S. Sibinamol ², Ajoy Saha ², R. C. Mandi ¹, M. E. Vijayakumar ², A. Roy Chowdhury ¹, B. K. Das ¹

Affiliations
1 ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, IN
2 Bangalore Research Centre of ICAR-CIFRI, Hessarghatta Lake Post, Bengaluru 560 089, IN

Source

Current Science, Vol 115, No 8 (2018), Pagination: 1436-1437

Abstract

The Pacific whiteleg shrimp, Litopenaeus vannamei (Boone, 1931) is a natural inhabitant of tropical marine waters along the Eastern Pacific coast, from the Gulf of California (Mexico) to Tumber (North of Peru), where the year-round water temperature normally exceeds 20°C (refs 1, 2). Presently, it is the most widely cultured shrimp species all over the world. Its farmed area is expanding mainly due to the availability of specific pathogen-free (SPF) seeds in the international market and its phenomenal success in farming systems due to the ability to tolerate wide salinity ranges (0-45 ppt), fast growth rate, low dietary protein requirement (30-35%), column feeding habit and amenability for crowding and very high stocking densities^3,4.

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Impact of Pusa Hydrogel Application on Yield and Productivity of Rainfed Wheat in North West Himalayan Region

Abstract Views :221 | PDF Views:79

Authors

Trisha Roy ¹, Suresh Kumar ¹, Lekh Chand ¹, D. M. Kadam ¹, Bankey Bihari ¹, S. S. Shrimali ¹, Rajesh Bishnoi ¹, U. K. Maurya ¹, Madan Singh ¹, M. Muruganandam ¹, Lakhan Singh ¹, S. K. Sharma ¹, Rakesh Kumar ¹, Anil Mallik ¹

Affiliations
1 ICAR-Indian Institute of Soil and Water Conservation, Dehradun 248 195, IN

Source

Current Science, Vol 116, No 7 (2019), Pagination: 1246-1251

Abstract

Farmers in the North West Himalayan region generally practise rainfed agriculture and have very limited scope for irrigation. Water scarcity is a major constraint for crop production in these areas. This problem exacerbates further during the Rabi season where vagaries of winter rain result in complete crop failure. This study was conducted in the Raipur Block of Dehradun district in the farmer’s field to study the impact of hydrogel on yield and productivity of wheat. Hydrogel is a hydrophilic polymer having high water holding capacity and can provide water to crops during moisture stress. Hydrogel was applied in the field in Rabi wheat with two broad treatments, i.e. with hydrogel (WH) and without hydrogel (WHO). Each treatment was replicated ten times, i.e. ten demonstrations were laid out in the field conditions. Hydrogel was applied at the rate of 5 kg ha^–1 and observations related to various plant growth parameters and yield were recorded. The plant population in hydrogel plots increased by 22% compared to the non-hydrogel treated plots. The effective tillers, plant height, ear length and grains per ear significantly improved due to hydrogel application. The total yield as well as grain yield increased significantly after hydrogel amendment. The improved performance of wheat upon hydrogel application was evident in the field. This technology could be promising in terms of productivity improvement of rainfed crops and in combating the moisture stress in agriculture.

Keywords

Hydrogel, Northwest Himalayas, Rainfed Wheat, Yield.

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Occurrence of Nuclear Polyhedrosis Virus of Invasive Fall Armyworm, Spodoptera Frugiperda (J. E. Smith) in Meghalaya, North East India

Abstract Views :248 | PDF Views:76

Authors

D. M. Firake ¹, S. K. Sharma ², G. T. Behere ¹

Affiliations
1 ICAR Research Complex for North Eastern Hill Region, Umroi Road, Umiam 793 103, IN
2 ICAR Research Complex for North Eastern Hill Region, Manipur Centre, Imphal 795 004, IN

Source

Current Science, Vol 118, No 12 (2020), Pagination: 1876-1877

Abstract

The American fall armyworm (FAW), Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) invaded Asia in 2018, causing huge damage to maize and other host crops in different countries¹. The invasive FAW is a highly polyphagous pest known to feed on 353 host plants across the globe². FAW was found in a severe form in maize fields of North East (NE) India after March 2019 (ref. 3).

Full Text

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