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   Identification of heat tolerant rice genotypes for north eastern region (ICAR RC NEH, Umiam) 

 


    A core set of 150 rice genotypes was formed from the whole genotypic set of 1100 genotypes representing all the states of NE India. The core set was grown in both ambient and elevated temperatures (+30C ambient) and the data was recorded for yield, yield contributing and physiological traits.  In general, plants flowered earlier with smaller length of panicles, less number of effective tillers and plant yield. Large variation was observed among the genotypes tested. Among genotypes tested, Daya (28.62 gm), Bhalum 3 (23.07), TRC 2016-301 (22.97 gm), TRC 2016-624 (22.22 gm), Bhalum 1 (21.42 gm), TRC 2016-426 (21.11 gm) and Manipur (20.74 gm) have shown high yielding ability in elevated temperature conditions which can be further utilized in breeding program. The pollens from randomly selected plants were collected, stored and number of fertile pollens was checked using KI solution.  MEETU-6, RCPL 1-305, Saku, RCPL 1-185 and TRC 2016-76 have shown highest pollen fertility percentage (>95%) in elevated temperature.

                         

                                                  

                            Evaluation of rice genotypes for tolerance to heat

 

  
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                          Potential yield of kharif rice is projected to reduce in extreme climate

                                                            

                                                    Potential yield of rice in climate change scenarios


The simulation study involved 6.2 million simulations consisting of various varieties, management, sowing/ transplanting time for direct seeds/transplanted rice during different seasons (kharif, rabi and summer) for various rice growing regions in India. Results indicated that the climate potential for rice yield will not change significantly in future. However, significant reduction in climate potential of current varieties’ yield is projected in RCP 8.5 scenario which is an extremely high GHG emission scenario. Initial analysis on impact of climate change on transplanted rice yield in different management conditions indicated that the magnitude and direction of impact has high spatial variation. If no adaptation is followed, transplanted rice yield may reduce in some regions.  Initial analysis indicated that the low-input farms are projected to be vulnerable for rice yield in changing climates. Short-duration varieties with improved management can significantly improve the yields despite climate change

                                                                                                                       

  
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Crop diversification for livelihood security and resilience to climate variability

 

    

 

 

Village level seed banks to combat seed shortages

In scarce rainfall zones of India, practice of sole cropping is predominant but is risky and often results in low yields or sometimes even in crop failure due to erratic monsoon rainfall and skewed distribution. In such areas intercropping is a feasible option to minimize risk in crop production, ensure reasonable returns at least from the intercrop and also improve soil fertility with a legume intercrop.



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NICRA Project launched in Chittoor district of Andhra Pradesh on 17th July, 2015

The National Innovations in Climate Resilient Agriculture (NICRA) project was launched at Chiitticherla village of Chinnagottigallu mandal in Chittoor district on 17th July 2015. ICAR-CRIDA which is coordinating the NICRA project implemented by 100 KVKs since 2011 at the national level is expanding the project implementation to 21 additional districts identified for their climate vulnerability from 2015 onwards. The technology demonstration component of NICRA in the district will be implemented by Krishi Vigyan Kendra (KVK) operated by Rashtriya Seva Samithi (RASS).

 

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Seed shortage of suitable crop varieties is an important limitation faced by farmers to implement contingency crop plans to tackle aberrant rainfall situations. In vulnerable areas, farmers tend to dispose-off the entire produce as grain and therefore depend on external sources for seed supply in the next season. In crops where the seed multiplication ratio is low, seed rate and seed cost is high


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Flood tolerant varieties impart resilience to farmers in flood-prone areas

Flooding is a major challenge for rice production in the country. Heavy and intense rainfall events cause flash floods due to overflow of rivers and canals or sometimes tidal movements in coastal areas. Continuous high rainfall in a short span leading to water logging and heavy rainfall with high speed winds in a short span due to cyclonic storms cause inundation of paddy fields and lodging of the crop at grain filling and maturity stages causing huge losses to the farmer.


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Crop diversification for livelihood security and resilience to climate variability

 

    

 

 

Village level seed banks to combat seed shortages

In scarce rainfall zones of India, practice of sole cropping is predominant but is risky and often results in low yields or sometimes even in crop failure due to erratic monsoon rainfall and skewed distribution. In such areas intercropping is a feasible option to minimize risk in crop production, ensure reasonable returns at least from the intercrop and also improve soil fertility with a legume intercrop.



Read More >>


NICRA Project launched in Chittoor district of Andhra Pradesh on 17th July, 2015

The National Innovations in Climate Resilient Agriculture (NICRA) project was launched at Chiitticherla village of Chinnagottigallu mandal in Chittoor district on 17th July 2015. ICAR-CRIDA which is coordinating the NICRA project implemented by 100 KVKs since 2011 at the national level is expanding the project implementation to 21 additional districts identified for their climate vulnerability from 2015 onwards. The technology demonstration component of NICRA in the district will be implemented by Krishi Vigyan Kendra (KVK) operated by Rashtriya Seva Samithi (RASS).

 

Read More >>

  

Seed shortage of suitable crop varieties is an important limitation faced by farmers to implement contingency crop plans to tackle aberrant rainfall situations. In vulnerable areas, farmers tend to dispose-off the entire produce as grain and therefore depend on external sources for seed supply in the next season. In crops where the seed multiplication ratio is low, seed rate and seed cost is high


Read More >>

 

Flood tolerant varieties impart resilience to farmers in flood-prone areas

Flooding is a major challenge for rice production in the country. Heavy and intense rainfall events cause flash floods due to overflow of rivers and canals or sometimes tidal movements in coastal areas. Continuous high rainfall in a short span leading to water logging and heavy rainfall with high speed winds in a short span due to cyclonic storms cause inundation of paddy fields and lodging of the crop at grain filling and maturity stages causing huge losses to the farmer.


Read More >>
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                                                                                                             Zero till cultivation of wheat                

                                                                                            
                           

Zero till cultivation of wheat is being demonstrated in upper and mid gangetic regions by IARI, New Delhi. In upper gangetic regions demonstrations were taken up in Haryana and in mid gangetic region demonstrations were takenup in Varanasi, Uttar Pradesh and Gaya, Bihar.Significant savings on tillage as well as higher benefit cost ratio were observed in case of zero-tillage than conventional system.


 Table-Impact of zero-till and raised bed planting in wheat in Gaya, Bihar

Technology

Cost of cultivation

Yield (q ac-1)

Gross income (Rs)

Benefi t-cost ratio

Zero-till

14560

19.37

29052

1.99

Conventional

18850

18.12

27186

1.44

 

               

                                                                                                  

                                                        Zero till sowing in paddy harvested fields in the states of Haryana and Gaya, Bihar


  

More Articles...

  1. Mitigation of Climate Change through Conservation Agriculture in Rainfed Regions of India
  2. NICRA Project launched in West Jaintia Hills, Meghalaya on 4th August 2015
  3. NICRA Project launched in Barmer district of Rajasthan
  4. NICRA Project launched in Chittoor
   
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