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Oxygation of rhizosphere with subsurface aerated irrigation water improves lint yield and performance of cotton on saline heavy clay soil
conference contribution
posted on 2017-12-06, 00:00 authored by Surya BhattaraiSurya Bhattarai, David MidmoreDavid MidmoreSalinity in agricultural soils has large impact on plant performance. Waterlogging and anoxia due to poor soil structure is a major problem for crop production in saline heavy clay soils. Inadequate oxygen concentration in the rhizosphere exacerbates the effect of salt and leads to poor plant performance. An experiment in the screen house was conducted to investigate growth and yield performance of cotton (Gossypium hirsutum L.) supplied with subsurface aerated water or non-aerated water to soil with four different salinity (ECe) levels of 2, 8, 14, 20 dS/m. The interaction between salinity and aeration was found to be non-significant for the variables measured. Cotton produced a significantly higher dry matter and lint yield with aerated water, irrespective of soil salinity level. The increase in yield was accompanied by an increase in root mass, canopy light interception and harvest index.
Funding
Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)
History
Start Page
1End Page
5Number of Pages
5Start Date
2004-01-01ISBN-10
1920842209Location
Brisbane, Qld.Publisher
Regional InstitutePlace of Publication
Gosford, N.S.W.Peer Reviewed
- Yes
Open Access
- No
External Author Affiliations
Primary Industries Research Centre; TBA Research Institute;Era Eligible
- Yes