scholarly journals Nitrogen Fertilizer Use Efficiency of Pepper as Affected by Irrigation and Fertilization Regime

2016 ◽  
Vol 44 (2) ◽  
pp. 525-532 ◽  
Author(s):  
Vjekoslav TANASKOVIK ◽  
Ordan CUKALIEV ◽  
Rameshwar S. KANWAR ◽  
Lee K. HENG ◽  
Mile MARKOSKI ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Irrigation Scheduling ◽  
Yield Potential ◽  
Percentage Increase ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Use Efficiency ◽  
Drip Fertigation

The pepper producers in the Republic of Macedonia have used drip irrigation systems to increase yield in recent years, but more research is still needed, related to irrigation scheduling and precise requirement of nitrogen fertilizer to maximise pepper yield. Therefore, a two year experiment was conducted in a plastic house to determine the nitrogen fertilizer use efficiency (NFUE) and yield potential of pruned pepper as affected by irrigation and fertilization regime. Four experimental treatments were applied in this study. Three of the treatments were drip fertigated (DF1, DF2, DF3), while the fourth treatment was furrow irrigated with conventional fertilization (ØB). The labelled urea with 1% concentration of a stable isotope of nitrogen (15N) was applied for determination of NFUE. The results of this study clearly showed that increased NFUE and pepper yield depend on irrigation and fertilization regime. Namely, NFUE was significantly increased with the application of nitrogen fertilizer through drip irrigation system as compared to conventional fertilization with furrow irrigation. Also, drip fertigation frequency positively affects percentage increase of NFUE. Furthermore, our results showed that drip fertigation treatments resulted in significantly higher pepper yields in comparison to conventional fertilization. Also, drip fertigation frequency at four and two days (DF2 and DF1) resulted in higher yields when compared with drip fertigation scheduled by using tensiometers (DF3). Generally, to reach acceptable pepper yield with high NFUE, we recommend drip fertigation with a frequency of two to four days combined with two main shoots of pruned pepper in order to increase farmer’s income and to minimize the environmental impact.

scholarly journals Water and Fertilizer Use Efficiency in Subirrigated Containerized Tomato

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1313
Author(s):  
Ariel Méndez-Cifuentes ◽  
Luis Alonso Valdez-Aguilar ◽  
Martín Cadena-Zapata ◽  
José Antonio González-Fuentes ◽  
José Alfredo Hernández-Maruri ◽  
...  
Keyword(s):  
Nutrient Solution ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Nutrient Loss ◽  
Drip Irrigation System ◽  
Tomato Plants ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Use Efficiency ◽  
Lower Biomass

Greenhouse cultivation is highly efficient in the use of water and fertilizers. However, due to intensive production, the greenhouse industry applies ample amounts of water and fertilizers. An alternative to minimize water and nutrient loss is zero-leaching systems, such as closed-loop subirrigation. The objective of the present study was to compare the water and fertilizer use efficiency in containerized tomato plants grown in a subirrigation system and a drip irrigation system. Subirrigated plants exhibited lower biomass than drip-irrigated plants. However, the amount of nutrient solution required to restore evapotranspirated water was lower in subirrigation. The yield was marginally decreased in subirrigated plants compared to drip-irrigated plants. The amount of nutrient solution required to produce 1 kg of fresh tomatoes was 22 L in subirrigation, whereas in drip irrigation, plants demanded 41 L. The total nitrogen applied through the nutrient solution was 75% lower in subirrigation than in drip irrigation, while the phosphorus, potassium, calcium and magnesium applied was 66%, 59%, 70% and 74% lower, respectively. We concluded that the subirrigation system proved to be more water- and nutrient-efficient than the drip irrigation system due to the zero leaching of the nutrient solution, the lower number of irrigation events required and the lower nutrient demand of plants.

Improving Nitrogen Fertilizer Use Efficiency in Surface- and Overhead Sprinkler-Irrigated Cotton in the Desert Southwest

2017 ◽  
Vol 81 (6) ◽  
pp. 1401-1412 ◽  
Author(s):  
K. F. Bronson ◽  
D. J. Hunsaker ◽  
J. Mon ◽  
P. Andrade-Sanchez ◽  
J. W. White ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Desert Southwest ◽  
Use Efficiency ◽  
Overhead Sprinkler

scholarly journals Nitrate Leaching, Yields, and Water-use Efficiency of Zucchini Squash (Cucubita pepo) under Different Irrigation and Nitrogen Rates and Methods in a Sandy Soil

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 988B-988
Author(s):  
Lincoln Zotarelli ◽  
Johannes Scholberg ◽  
Michael Dukes ◽  
Hannah Snyder ◽  
Eric Simonne ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Nitrate Leaching ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Groundwater Resources ◽  
Irrigation Scheduling ◽  
Control Treatment ◽  
N Leaching ◽  
Use Efficiency

On sandy soils, potential N contamination of groundwater resources associated with intensively managed vegetables may hamper the sustainability of these systems. The objective of this study was to evaluate the interaction between irrigation system design/scheduling and N fertilization rates on zucchini production and potential N leaching. Zucchini was planted during Fall 2005 using three N fertilizer rates (73, 145, 217 kg/ha) and four different irrigation approaches. Irrigation scheduling included surface-applied drip irrigation and fertigation: SUR1 (141 mm applied) and SUR2 (266 mm) using irrigation control system (QIC) that allowed time-based irrigation (up to five events per day) and a threshold setting of 13% and 15% volumetric water content (VWC), respectively; Subsurface drip irrigation (SDI) using a QIC setting of 10% VWC (116 mm) combined with surface applied fertigation; and a control treatment with irrigation applied once daily (424 mm). Leacheate volumes were measured by drainage lysimeters. Nitrate leaching increased with irrigation rate and N rate and measured values ranged from 4 to 42 kg N/ha. Use of SDI greatly reduced nitrate leaching compared to other treatments. SDI and SUR1 treatments had no effect on yields (29 Mg/ha). However, SDI had a 15% and 479% higher water use efficiency (WUE) compared to SUR1 and the fixed irrigation duration treatment. Application of N in excess of intermediate N-rate (standard recommendation) did not increase yield but yield was reduced at the lowest N-rate. It is concluded that combining sensor-based SDI with surface applied fertigation resulted similar or higher yields while it reduced both water use and potential N leaching because of improved nutrient retention in the active root zone.

Irrigation scheduling through drip and surface methods- A critical review on growth, yield, nutrient uptake and water use studies of rabi maize

2018 ◽  
Author(s):  
M.M. Kadasiddappa ◽  
V. Praveen Rao
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Crop Production ◽  
Irrigation System ◽  
Irrigation Scheduling ◽  
N Leaching ◽  
Contributing Factors ◽  
Maize Crop ◽  
Use Efficiency

Water is the prime natural resource, which is often costly and limiting input particularly in arid and semi arid regions, hence needs judicious use to reap the maximum benefit from this limiting resource. Indian farmers are now finding ways to shift from traditional practices to more modern technologies for crop production. Of late, drip irrigation is receiving better appreciation, acceptance, and adaption and plays an important role in saving the water in water scarce areas. It enables the efficient use of limited water with higher water use efficiency. Adaptation of drip irrigation in rabi maize which is one of the amenable crop for drip irrigation system is gaining momentum because of its higher productivity coupled with higher price. Irrigation application can be reduced by 50 to 80 per cent with drip irrigation compared to surface irrigation. Further, drip irrigation has the potential for improving two of the most common contributing factors to N leaching – over fertilization and over irrigation. Therefore, optimum irrigation levels with suitable method would help in enhancing the economic yield as well as water use efficiency of maize crop.

Improving Nitrogen Fertilizer Use Efficiency in Subsurface Drip‐Irrigated Cotton in the Desert Southwest

2019 ◽  
Vol 83 (6) ◽  
pp. 1712-1721 ◽  
Author(s):  
Kevin. F. Bronson ◽  
Douglas J. Hunsaker ◽  
John J. Meisinger ◽  
Sharette M. Rockholt ◽  
Kelly R. Thorp ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Desert Southwest ◽  
Use Efficiency ◽  
Subsurface Drip

Assessment of smart irrigation controllers under subsurface and drip-irrigation systems for tomato yield in arid regions

2015 ◽  
Vol 66 (10) ◽  
pp. 1086 ◽  
Author(s):  
H. M. Al-Ghobari ◽  
F. S. Mohammad ◽  
M. S. A. El Marazky
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Irrigation Scheduling ◽  
Irrigation Systems ◽  
Tomato Crop ◽  
Tomato Yield ◽  
Irrigation Water Use ◽  
Scheduling Irrigation ◽  
Use Efficiency

Here, two types of smart irrigation controllers intended to reduce irrigation water are investigated under Saudi Arabia’s present water crisis scenario. These controllers are specially made for scheduling irrigation and management of landscaping. Consequently, the aim of this study is to adapt the efficient automated controllers to tomato crops, and for extension to other similar agricultural crops. The controllers are based on evapotranspiration and have been shown to be promising tools for scheduling irrigation and quantifying the water required by plants to achieve water savings. In particular, the study aims to evaluate the effectiveness of these technologies (SmartLine SL 1600and Hunter Pro-C) in terms of the amount of irrigation applied and compare them with conventional irrigation scheduling methods. The smart irrigation systems were implemented and tested under drip irrigation and subsurface irrigation for tomato (cv. Nema) in an arid region. The results revealed significant differences between the three irrigation-scheduling methods in both the amount of applied water and yield. For example, each 1 mm water depth applied to the tomato crop via subsurface (or drip) irrigation by SmartLine, Hunter Pro-C, and the control system yielded 129.70 kg (70.33 kg), 161.50 kg (93.47 kg), and 109.78 kg (108.32 kg), respectively. Generally, the data analysis indicates that the Hunter Pro-C system saves water and produces a higher yield with the greatest irrigation water-use efficiency (IWUE) of the irrigation scheduling methods considered. Moreover, the results indicate that the subsurface irrigation system produced a higher yield and IWUE than the drip system.

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