Effect of residue management tillage and irrigation on water balance of direct seeded rice and wheat

Simple item page
dc.contributor.advisorSingh, K. B.
dc.contributor.authorGurpreet Singh
dc.date.accessioned2019-08-30T07:07:52Z
dc.date.available2019-08-30T07:07:52Z
dc.date.issued2019
dc.description.abstractAdoption of proper tillage and residue management practices are must for sustaining soil and crop productivity. Residue retention or incorporation with proper irrigation scheduling improves soil water storage, soil physical characteristics and crop productivity. However, the tillage and residue management practices are very site specific. Therefore, field experimets were conducted during rabi 2015-16 and 2016- 17 and kharif 2016 and 2017. Wheat was sown with three residue management tillage systems (residue incorporation, residue standing and residue removal) under flood and drip irrigation. Rice seeds were directly sown in previously established main plots of residue management tillage (same as in wheat) and further wheat residue incorporation and removal in sub-plots along with flood and drip irrigation. The data indicated that during 2015-16 and 2016-17, all growth attributes of wheat i.e., plant height, leaf area index (LAI) and dry matter accumulation (DMA) were highest in reisdue incorporation with drip iriigation. The yield attributes i.e., grain yield and biological yield were also highest in residue incorporation with drip irrigation (RI+D) and lowest in residue removal with flood irrigation (RR+F). During 2015-16 and 2016- 17, maximum amount of irrigation water was received by RR+F (29.76 and 29.07 cm) and lowest amount of irrigation water was received by RI+D (20.51 and 19.66 cm). Maximum soil water contribution to wheat crop was also observed from RI+D. Irrespective of irrigation treatments, residue incorporation also resulted in 2.65% lower bulk density and 11.67% higher saturated hydraulic conductivity at 0-7.5 cm soil depth and 28.57% higher final infiltration rate, 41.46% higher mean weight diameter and 29.03% higher organic carbon as compared residue removal treatment after 2 years. Crop water productivity was significantly more under drip irrigation as compared to flood irrigation during 2016-17. However, apparent water productivity was significantly higher under residue incorporation as compared to residue standing and residue removal. In direct seeded rice, during 2016 and 2017, all growth attributes i.e., plant height, LAI and DMA of DSR was highest in the treatment which received double incorporation (incorporation of paddy straw and wheat straw). Combination of residue incorporation with drip irrigation resulted in highest values of crop growth attributes. The yield attributes i.e., grain yield and biological yield was 20.31 and 17.59% higher in residue incorporation as compared to residue removal during 2017. All flood irrigated plots received same amount of irrigation 109.53 and 116.95 cm during 2016 and 2017, respectively. The lowest amount of irrigation 98.12 and 103.61 cm during 2016 and 2017 was received by RI-RI+D. Residue incorporation also resulted in lowest drainage and more soil moisture storage at harvesting of direct seeded rice during both years. Residue incorporation resulted in significant reduction in soil bulk density of surface soil (0-15 cm) after harvesting of rice during both years. Saturated hydraulic conductivity and soil infiltration rate also improved under residue incorporation. The study finally concluded that residue incorporation along with drip irrigation saves irrigation water and improves soil moisture storage and crop performance.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810124916
dc.keywordsTillage, residue management, drip irrigation, water balance, direct seeded rice, wheaten_US
dc.language.isoenen_US
dc.pages116en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemEffect of residue management tillage and irrigation on water balance of direct seeded rice and wheaten_US
dc.subSoil Scienceen_US
dc.themeEffect of residue management tillage and irrigation on water balance of direct seeded rice and wheaten_US
dc.these.typePh.Den_US
dc.titleEffect of residue management tillage and irrigation on water balance of direct seeded rice and wheaten_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Gurpreet Singh (L-2014-A-67-D) Ph.D. Dissertation.pdf
Size:
4.31 MB
Format:
Adobe Portable Document Format
Description:
Ph.D
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Thesis