A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production.

Abstract:

:Alternative tillage and rice establishment options should aim at less water and labor to produce similar or improved yields compared with traditional puddled-transplanted rice cultivation. The relative performance of these practices in terms of yield, water input, and economics varies across rice-growing regions. A global meta and mixed model analysis was performed, using a dataset involving 323 on-station and 9 on-farm studies (a total of 3878 paired data), to evaluate the yield, water input, greenhouse gas emissions, and cost and net return with five major tillage/crop establishment options. Shifting from transplanting to direct-seeding was advantageous but the change from conventional to zero or reduced tillage reduced yields. Direct-seeded rice under wet tillage was the best alternative with yield advantages of 1.3-4.7% (p < 0.05) and higher net economic return of 13% (p < 0.05), accompanied by savings of water by 15% (p < 0.05) and a reduction in cost by 2.4-8.8%. Direct-seeding under zero tillage was another potential alternative with high savings in water input and cost of cultivation, with no yield penalty. The alternative practices reduced methane emissions but increased nitrous oxide emissions. Soil texture plays a key role in relative yield advantages, and therefore refinement of the practice to suit a specific agro-ecosystem is needed.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Chakraborty D,Ladha JK,Rana DS,Jat ML,Gathala MK,Yadav S,Rao AN,Ramesha MS,Raman A

doi

10.1038/s41598-017-09742-9

subject

Has Abstract

pub_date

2017-08-24 00:00:00

pages

9342

issue

1

issn

2045-2322

pii

10.1038/s41598-017-09742-9

journal_volume

7

pub_type

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