scholarly journals Fertigation of Maize with Digestate Using Drip Irrigation and Pivot Systems

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1453
Author(s):  
Viviana Guido ◽  
Alberto Finzi ◽  
Omar Ferrari ◽  
Elisabetta Riva ◽  
Dolores Quílez ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Soil Nitrogen ◽  
Drip Irrigation ◽  
Liquid Fraction ◽  
Growing Season ◽  
Northern Italy ◽  
Irrigation Systems ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Reference Fields

Digestate is a nutrient-rich fertilizer and appropriate techniques are required for its application during the maize season to reduce losses and increase the nitrogen use efficiency (NUE). The performance of two different fertigation techniques (drip irrigation and pivot) were assessed using the digestate liquid fraction. A two-year field test was carried out at two different sites in Lombardy, northern Italy. At each site, fertigation with pivot (P-F, site 1) or drip (D-F, site 2) systems was compared to reference fields where the same irrigation techniques without addition of digestate were used. During the two seasons, the performance of the fertigation systems, amount of fertilizers used, soil nitrogen content, yields, and nitrogen content of the harvested plants were monitored. The digestate application averaged 5 m3/ha per fertigation event with P-F and 4.9 m3/ha with D-F corresponding, respectively, to 28 and 23 kg N/ha. Both irrigation systems were suitable for fertigation provided that the digestate was adequately filtrated. Our results suggest that fertigation with digestate, if properly managed, can be applied during the growing season up to the full amount of nitrogen required by the crop.

scholarly journals Growth, Nitrogen Use Efficiency, and Leachate Comparison of Subirrigated and Overhead Irrigated Pale Purple Coneflower Seedlings

HortScience ◽  
2008 ◽  
Vol 43 (3) ◽  
pp. 897-901 ◽  
Author(s):  
Jeremy R. Pinto ◽  
Rhiannon A. Chandler ◽  
R. Kasten Dumroese
Keyword(s):  
Electrical Conductivity ◽  
Nitrogen Use Efficiency ◽  
Growing Season ◽  
Native Plant ◽  
Irrigation Systems ◽  
Nitrogen Use ◽  
Purple Coneflower ◽  
Echinacea Pallida ◽  
Overhead Irrigation ◽  
Use Efficiency

Pale purple coneflower [Echinacea pallida (Nutt.) Nutt.] was grown within three container volumes (90, 105, and 340 cm3) under subirrigation and overhead irrigation treatments. Subirrigated coneflowers showed increased seedling quality with more biomass (14%), better nitrogen use efficiency (13%), greater nitrogen content (N; 11%), more height (15%), and lower mortality compared with overhead-irrigated seedlings. Plants also showed increasing height, biomass, and N content with increasing container volume. Overhead irrigated coneflowers had more leachate compared with subirrigated seedlings, which produced none. Leachate electrical conductivity and N were monitored throughout the growing season and decreased at similar rates, whereas subirrigation effluent levels remained constant. Subirrigation offers a viable alternative to traditional overhead irrigation systems by producing this native plant with equal or better quality without discharging potentially harmful leachate into the environment.

scholarly journals Environmental and Economic Sustainability Assessment for Two Different Sprinkler and A Drip Irrigation Systems: A Case Study on Maize Cropping

Agriculture ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 187 ◽  
Author(s):  
Eros Borsato ◽  
Marco Martello ◽  
Francesco Marinello ◽  
Lucia Bortolini
Keyword(s):  
Growth Rate ◽  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Water Footprint ◽  
Irrigation Systems ◽  
Environmental Aspect ◽  
Irrigation Practice ◽  
Center Pivot ◽  
Use Efficiency

Water scarcity is worsened by climate change. Water savings can be reached by improving irrigation efficiency both on farm and on water supply. To do that, the choice of the best irrigation technology is not always straightforward, because farmers need to renew and implement farm infrastructures for irrigation. This study compares three irrigation systems, one drip irrigation and two sprinkler (center pivot and hose-reel) systems, on environmental, economic, and energetic performance under irrigated and non-irrigated maize cropping. The study combines impact and efficiency indicators, addressing a sustainability analysis for the irrigation practice under the three different irrigation systems. The sustainability for the irrigation systems was assessed using water-related indicators (water use efficiency, irrigation water use efficiency, and water footprint), biomass (crop growth rate, relative growth rate, harvest index, and yield response factor), and energy indicators (energy footprint, performance, and energy cost footprint) for the environmental aspect; and the economic-based indicators (water productivity and economic water footprint) for the economic aspect. Main results address the center pivot system as the best solution for irrigation practice since it demonstrated higher economic and environmental performance. Moreover, maize under the pivot system allowed a higher biomass production, economic benefits, and water use efficiency.

Soil Nitrogen and Nitrogen-Use Efficiency under Long-Term No-till Practice

2011 ◽  
Vol 75 (6) ◽  
pp. 2251-2261 ◽  
Author(s):  
Ram C. Dalal ◽  
Weijin Wang ◽  
Diane E. Allen ◽  
Steven Reeves ◽  
Neal W. Menzies
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
No Till ◽  
Use Efficiency
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