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Long term impact of waste water irrigation and nutrient rates:I. Performance, sustainability and produce quality of peri urbancropping systems

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Title Long term impact of waste water irrigation and nutrient rates:I. Performance, sustainability and produce quality of peri urbancropping systems
Not Available
 
Creator PS Minhas,
Lal K,
R.K. Yadav,
S.K. Dubey,
R.K. Chaturvedi
 
Subject Wastewater irrigation
Cropping systems Sustainability
Fertilizer saving
Produce quality
Peri-urban agriculturea
 
Description Not Available
tFarmers in peri-urban areas of developing countries depend on wastewaters for their livelihood but withgrave health and environmental risks. An 8-year field experiment compared food grain (FGPS), agro-forestry (AFS), fodder (FPS) and vegetable (VPS) production systems and quantified responses to fertilizers(NP 25–100%) when irrigated with sewage (SW; EC 1.3 ± 0.3 dS m−1BOD 82 ± 11, NO3–N 3.2 ± 0.4, NH4–N9.6 ± 0.5, P 1.8 ± 0.3, K 6.4 ± 0.4 mg L−1) vis-à-vis groundwater (GW). Productivity improved with SW by14–28% while trends were negative with sub-optimal NP under GW. Partial factor productivity (PFP)averaged 18.0, 11.1, 157 and 149 kg kg−1NP with GW in FGPS, AFS, FPS and VPS, respectively. Counterfigures were 13.8, 8.8, 96 and 56 kg kg−1NP with SW. Paddy-wheat equivalent yields were 5.5, 1.8 and19.9 fold under AFS, FPS and VPS with SW. About 40, 33, 75 and 20% of fertilizer NP with SW was sufficientfor similar production as with recommended NP and GW in FGPS, AFS, FPS and VPS, respectively. Qualityof produce improved in terms of crude protein and the micronutrients in edible parts with SW while toxicmetals were within the permissible limits. However, the keeping quality of vegetables was lowered due tofaster decay with pathogens contamination (Aerobic bacterial plate counts 5 × 105–4.2 × 108cfu g−1andEscherichia coli
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Date 2019-11-29T09:56:04Z
2019-11-29T09:56:04Z
2015-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/25874
 
Language English
 
Relation Not Available;
 
Publisher Not Available