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Long term impact of wastewater irrigation and nutrient rates: I. Performance, sustainability and produce quality of peri urban cropping systems

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Title Long term impact of wastewater irrigation and nutrient rates: I. Performance, sustainability and produce quality of peri urban cropping systems
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Creator .S.Minhas
Khajanchi-Lal
R.K.Yadav
S.K.Dubey,
R.K. Chaturvedi
 
Subject Wastewater irrigation, Cropping systems Sustainability Fertilizer saving Produce quality Peri-urban agriculture
 
Description Not Available
Farmers in peri-urban areas of developing countries depend on wastewaters for their livelihood but with grave 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-1 BOD 82 ± 11, NO –N 9.6± 0.5, P 1.8 ± 0.3, K 6.4 ± 0.4 mg L -1 ) vis-à-vis groundwater (GW). Productivity improved with SW by 14–28%
while trends were negative with sub-optimal NP under GW. Partial factor productivity (PFP)
averaged 18.0, 11.1, 157 and 149 kg kg -1 NP with GW in FGPS, AFS, FPS and VPS, respectively. Counter figures were 13.8, 8.8, 96 and 56 kg kg -1 NP with SW. Paddy-wheat equivalent yields were 5.5, 1.8 and 19.9 fold under AFS, FPS and VPS with SW. About 40, 33, 75 and 20% of fertilizer NP with SW was sufficient for
similar production as with recommended NP and GW in FGPS, AFS, FPS and VPS, respectively. Quality of produce improved in terms of crude protein and the micronutrients in edible parts with SW while toxic
metals were within the permissible limits. However, the keeping quality of vegetables was lowered due to
faster decay with pathogens contamination (Aerobic bacterial plate counts 5 × 1053–N 3.2 0.4, NH–4.2 × 10and Escherichia coli
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Date 2020-05-27T09:01:44Z
2020-05-27T09:01:44Z
2015-03-15
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/36417
 
Language English
 
Relation Not Available;
 
Publisher Not Available