Global warming has doubled in past 5 decades: Expert

Lukcnow, Dec 23 - The rate of global warming has doubled in the past five decades and claimed that the temperature during the next century would rise int he range of 1.80 centigrade to 40 degree, said Prof K N Tiwari from IIT, Kharagpur said.

In a presentation Prof Tiwari said that the rate of warming in the last 50 years had doubled than that for the last century. Furthermore, temperature is likely to rise in the range of 1.80 c to 40 c in next century, resulting in direct and indirect effects on agricultural crops.

"Rise in temperature will reduce crop ripening duration and maturity time. In order to mitigate the ill effects of climate changes, strategies like protected cultivation structures, low tunnels, walk-in-tunnels, insect-proof net house, shade net houses, green houses, mulching were suggested by him for enhanced productivity and profitability, he said.

The professor was speaking in a two-day National Workshop-cum-Seminar on ‘Emerging Prospects of Protected Cultivation in Horticultural Crops under Changing Climate’ which was concluded today here at ICAR-Central Institute for Subtropical Horticulture Presentations were made by renowned scientists on various aspects of protected cultivation, besides sharing of experiences by successful farmers’ in this field from different parts of the country.

Dr. Shailendra Rajan, Director, ICAR-CISH, Lucknow highlighted, the hi-tech nursery production of improved varieties of mango guava, aonla, bael, jamun but the Institute.

Around two lakh plants of these fruit crops are being sold by the Institue nursery every year. With the use of protected structures, it is now possible to produce grafts round the year.

The guava varieties, viz. Lalit and Shweta have made tremendous impact in states like Maharashtra, Andhra Pradesh and are spreading to other states through farmers and nurserymen due to attractive fruits, higher yield and wider adaptability.

He also highlighted two recently released varieties of guava, viz. Dhawal and Lalima. Prof D K Dora from Orissa University of Agriculture and Technolgy, Bhubaneswar highlighted mushroom production in protected structures under controlled conditions for round the year supply instead of growing it on paddy straw.

Mushroom has immense potential of commercialisation for entrepreneurship and profitability especially for small and marginal farmers.

Dr. Neelam Patel, Principal Scientist from ICAR-IARI, New Delhi suggested micro-irrigation and fertigation systems to save water and nutrient losses and enhance efficiency of these valuable resources. With micro-irrigation 40-100 per cent of water can be saved over flood method and 90-95 per cent water use efficiency can be achieved.

Presentations were also made by Dr SR Singh, Dr VK Singh, Dr Gundappa, Dr Prananath Barman on production of exotic vegetables in protected structures, insect pest and disease management and other aspects.

The recommendations were presented by respective rapporteurs in the plenary session. In the end, Dr R. M. Khan presented formal vote of thanks.

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