scholarly journals Irrigation modeling in a pear orchard

2010 ◽  
Vol 16 (3) ◽  
Author(s):  
A. Nagy ◽  
Tamás J. ◽  
Fórián T. ◽  
Nyéki J. ◽  
Soltész M. ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Research Field ◽  
Lack Of Information ◽  
Irrigation Interval ◽  
Pear Orchard ◽  
Use Efficiency ◽  
Large Water ◽  
Crop Coefficients

The pear has large water requirement, therefore the planting of high density and grass covered pear orchards are needed irrigationconditions in Hungary. Drip irrigation spread in the orchards is due to the 90–95% of water use efficiency. One of the key role of irrigation is theproper determination of evapotranspiration and crop coefficients. As there is a considerable lack of information for different crops or fruits thePenman-Monteith method is used for the estimation of evapotranspiration, using CROPWAT 8.0. The research field was the genetic collection ofpear at Újfehértó, in Hungary, which is situated in Nyírség meso-region. Our aim was to establish drip irrigation at this site. Based on the resultsof CROPWAT irrigation model the mean amount of the total gross irrigation is between 230–270 mm, within 3 irrigation interval regardingclimatic and rainfall data of the last 10 years. In 2009, due to heavy drought, the total gross irrigation was 355,4mm/year on sandy soil calculatingwith 45% total available water depletion in 5 irrigation interval. The sizing of the irrigation system was set to the maximum 0.55 l/s/ha, which is6.3 l/tree/h. 6.3 l/tree/h can be carried out with a drip emitter having 16 mm wing lines diameter, 4 l/h water flow at 3 atm pressure.

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.

Straw Mulching under a Drip Irrigation System Improves Maize Grain Yield and Water Use Efficiency

Crop Science ◽  
2019 ◽  
Vol 59 (6) ◽  
pp. 2806-2819 ◽  
Author(s):  
Baoyuan Zhou ◽  
Di Ma ◽  
Xuefang Sun ◽  
Zaisong Ding ◽  
Congfeng Li ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Drip Irrigation System ◽  
Straw Mulching ◽  
Maize Grain Yield ◽  
Use Efficiency ◽  
Maize Grain

Determination of Herbicide Residues using LC-MS/MS in Direct Seeded Cultivated Paddy under Drip Irrigation System

2021 ◽  
Vol 33 (1) ◽  
pp. 57-65
Author(s):  
Vinay B Patil ◽  
B K Desai ◽  
R Harischandra Naik ◽  
B G Masthana Reddy ◽  
M Bheemanna
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Drip Irrigation System ◽  
Herbicide Residues ◽  
Direct Seeded

scholarly journals Effect of Automated Drip Irrigation System on Yield and Water Use Efficiency of Tomato (Solanum lycopersicum L.)

2021 ◽  
pp. 193-198
Author(s):  
R. Suvitha ◽  
A. Velayutham ◽  
V. Geethalakshmi ◽  
S. Panneerselvam ◽  
P. Jeyakumar ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Use Efficiency ◽  
Water Use ◽  
Conventional Method ◽  
Drip Irrigation ◽  
Tamil Nadu ◽  
Irrigation System ◽  
Moisture Sensor ◽  
Soil Moisture Sensor ◽  
Use Efficiency

Field experiment was conducted to evaluate the performance of different automated drip irrigation on tomato crop under sandy clay loam soil in Tamil Nadu Agricultural University during kharif 2019 and kharif 2020. Five treatments comprising 4 different automated drip irrigation systems are time based drip irrigation, volume based drip irrigation, soil moisture sensor based irrigation, switching tensiometer based irrigation and one is conventional method of irrigation were tested. The results revealed that tensiometer based drip irrigation recorded higher fruit yield of 95.11 and 96.21 t ha-1 and water use efficiency of 21.10 and 25.42 t ha-mm-1 resulting in increment over conventional method of irrigation. However, the above treatment was followed by soil moisture sensor based drip irrigation in tomato. Tensiometer based drip irrigation helps to save the water up to 54.91 and 60.55 % compared to conventional method of irrigation during kharif 2019 and 2020.

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