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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(11): 2773-2779
DOI: https://doi.org/10.20546/ijcmas.2017.611.328


Irrigation and Deep Tillage Effects on Pesticide Use and Water Productivity of Dry Seeded Rice
Ritika Joshi*
Punjab Agricultural University
*Corresponding author
Abstract:

An alarming fall in groundwater table in Northwest India demands a major shift from traditional method of rice cultivation to direct seeding of rice. Dry-seeded rice has emerged as a viable option to save water, labour, energy and time. Proper tillage and irrigation practices are needed to improve water productivity in dry-seeded rice through reduction in emergence of weeds and reduce ground water depletion and pesticide use. A field experiment was conducted at the research farm of the Department of Soil Science, Punjab Agricultural University, Ludhiana, during Kharif season to study tillage and irrigation regimes effects on water productivity of dry-seeded rice. The treatments included combination of two tillage regimes (deep tillage and conventional tillage) and irrigation regimes (Irrigation based on IW/CPE ratio of 2.4 (I2.4) and 1.2 (I1.2). Deep tillage incorporates weeds into deeper layers and reduces pesticide use, induced root proliferation, increased uptake of water. DT also had higher grain yield (5.4 t ha-1) than CT (4.4 t ha-1). Among the tillage regimes, DT I1.2 was observed to have higher water use efficiency. Increasing irrigation frequency reduced irrigation-based WP (WPI). DT enhanced WPI from 4.8 to 6.5 kg ha-1 mm-1 in I1.2 regime, and from 4.4 to 5.1 kg ha-1 mm-1 in I2.4 regime. Root mass below 0.10 m soil depth in CTI1.2, CTI2.4, DTI1.2 and DTI2.4 regimes was 4.2, 8.8, 9.7 and 9.4 g m-2 at panicle emergence. Among irrigation and tillage regimes weed infestation lesser in DTI1.2 as compare to other treatments due to less availability of water in surface layers.


Keywords: Dry-seeded rice, Tillage regimes, Irrigation regimes, Water use efficiency.
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How to cite this article:

Ritika Joshi. 2017. Irrigation and Deep Tillage Effects on Pesticide Use and Water Productivity of Dry Seeded Rice.Int.J.Curr.Microbiol.App.Sci. 6(11): 2773-2779. doi: https://doi.org/10.20546/ijcmas.2017.611.328