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Enhancing crop production under increasing water constraints and greater cllmotl...
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1442 - Integrated System of Rice Intensification (ISRI) - Climate Resilient Technology

Poster presented at the 4th International Rice Congress
Authors: Amod Thakur, Rajeeb Kumar Mohanty and ashwani Kumar
Title: Integrated System of Rice Intensification - Climate Resilient Technology to Enhance Crop and Water Productivity
Venue: Bangkok International Trade and Exhibition Centre (BITEC), Bangkok, Thailand
Date: October 28-31, 2014

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1442 - Integrated System of Rice Intensification (ISRI) - Climate Resilient Technology

  1. 1. .14“ :1_‘: L,‘ o . . . -.u—. —.. -a I Enhancing crop production under increasing water constraints and greater cllmotlc variability is a major challenge in agriculture. In many rice-growing areas, cultivation depends mainly on seasonal rainfall and unreliable rainfall distribution results in either flooding or long dry spells, causing environmental stress and low productivity. Therefore, climate-resilient upland rice production systems are needed under which the productivity of both land and water can be enhanced. Experimental Details liice crop was grown with conventional method , and all rainwater was harvested and used in the held without any supplemental irrigation Rice crop was grown with SRI methods and all rainwater was S-liw harvested and used in the field without any supplemental irrigation (-RW liice crop was grown with SRI methods, no stagnant water S-Iw was kept in the field (excess rainwater was drained) and supplemental irrigation was provided as and when required like crop was grown with SRI methods, no stagnant water 5 cw was kept in the lleld (excess rainwaterwas stored in the refuge) and supplemental irrigation was provided from water conserved in the refuge as and when required Morphological Changes Phenotyplc improvements in SRI plans included: V plant height, / greater tillerlng, / more number of leaves. and / expanded root systems Physiological Performance Improvements in physiological functions like, I greater xylem exudation rate. I higher light interception by the canopy. / more chlorophyll oontent, / greater light utilization. and I higher photosynthetic rates In the leaves during flowering under SRI was recorded. Rice only Rice only Rice only like 9 Fish 4 Horticultural crops £'. ‘.'. '.. ..' 1 u. ..'’'. .'. x. mr. II| -ml ». . 5 g : n 1 e 2 our ‘ Evlrsl, -Illeltr-_N°: I,v1b, -,'J one rrIII(2fl17!I nssa nwn[10I0) -an . l.. . I m . ;. 2009 2.35 g 4.21 e 5.95 o 6.22 a (, -aml“ (--. .-~ 2009 2010 Mean 2009 2010 Mean ic-RW 3.4 d 4.7 d 4.1 d 176.3 a 236.2 c 206.3 c . s~RW 1.0 c 8.6 be 7.5 c 172.3 e 201.2 d 187.0 d js-tw 10.5 b 9.9 la 10.2 b 262.2 b 246.3 be 254.3 I: S-CW 12.7a 11.9 ab 12.3a : l17.Ba 298.2a 308.0a Year (Y) ns ns -mm-n . . . . Y: T ns ns _ Economic Analysis 8. Water Productivity IT! -' ? ‘."; '.3.’ fl: -.l: l' WWI ‘.775. TV '- l4'l't*1I. ‘ll --l n‘/ an-. . TM! n[0l‘l -. -an r. l.- I - - 3- . -i-w. -,-rut‘! F . l.‘ 1183.0 1336.0 153.0 1.13 487.8 0.31 l» ' nu‘ 1155.0 2488.7 1313.7 2.14 487.6 269 I. « . r 135.0 3109.2 1834.2 2.35 681.5 277 3;; 4782.1 14183.0 9401.0 2.97 497.2 18.91 201 0 3.41 l 4.61 d 5.43 c 6.09 b 2.80 d 4.41 c 5.70 b 8.16 a Reduced plant densllles - leads Increases In root development - can be a simplest strategy to alleviate the risks ol unreliable rainfall I 2%” I 2020-]! -r -can lnl'cegrat*. =:-cl System of Rice ln‘tel1si‘fica'tion (ISRI): Climate Resilient Technology to Enhance Crop and Water Produc'tivi’cy Amod Kumar Thakur, Rajveb Kumar Mohanty & Ashwanl Kumar ~ Directorate of Water Management (ICAR) Bhubaneswar, Odisha, India -col at u 18 Increase In grain yield overc-RW Under Integrated SRI, rice is grown following SRI method under rainled condition and part of rice field converted Into refuge I pond to conserve excess rainwater- can be used for supplementary irrigation. The stored water in the pond can also be used for growing fish for short-term periods, and the refuge bunds could be used for horticultural crops. 7'35"" llilli rm ll ‘ _/ —-J-T - ,5’ ‘ u - 1 . . . ... . . .._, __ oun- -. «.. -n ‘i I won one-urn-u--no-nu-as-—. .a-nan 15° -ibroughtyoar (2000) utlormal year (2010) 160 152 “3 140 120 M In . ‘ M l 13 so . l .59 ll ‘ to ‘.3: » 1 l , . 20 w‘ ‘l [ .5 ‘ l f 1 ° ‘ " » l i saw " ' 3-lw 3-CW Rico Production System _¢ sxfiki ? 3.. 0 Use of nutrient rich irrigation water 0 Proper WM 0 Sltl practices except WM. NM Sltl: Drought Resistance conventional method - Grain yield reduction more 16 increase in grain yield under SRI-Greater Under SRI-ditterence between drought and normal rainlall year- not as big as in com. method SRI-DROUGHT tolerant Mainly due to greater roots r SRI Increase the resilience ol rice culrlvailon system because of more robust and healthy J 75¢ fillzre /0:1/kt? plants with strong tillers and me profuse and deeper root systems. These phenoryplc allerallons under SRI method make plants more tolerant to short periods of water stress assoclared Wllh droughts condlilons, less vulnerable to heavy ralnlall and storm damage. ' 1 tAparr lrom enhanced grain yield, waler productivity and slgnlllcanrly higher economic relum, ISRI also helps to cope rice crop from unreliable rainfall due to climate change. Contact: amod_wtcer@yahoo. com

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