COTTON RESPONSE TO SUBSURFACE DRIP IRRIGATION FREQUENCY UNDER DEFICIT IRRIGATION

2003 ◽  
Vol 19 (5) ◽  
Author(s):  
J. M. Enciso ◽  
B. L. Unruh ◽  
P. D. Colaizzi ◽  
W. L. Multer
Keyword(s):  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Subsurface Drip Irrigation ◽  
Irrigation Frequency ◽  
Subsurface Drip

scholarly journals INTEGRATION OF SUBSURFACE IRRIGATION AND ORGANIC MULCHING WITH DEFICIT IRRIGATION TO INCREASE WATER USE EFFICIENCY OF DRIP IRRIGATION

2021 ◽  
pp. 215-226
Author(s):  
Elnemr Moataz
Keyword(s):  
Water Use Efficiency ◽  
Rice Straw ◽  
Water Use ◽  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Subsurface Drip Irrigation ◽  
Tomato Crop ◽  
Tomato Yield ◽  
Use Efficiency ◽  
Subsurface Drip

This study aimed to integrate the ability of organic mulching (rice straw) and subsurface irrigation with deficit irrigation to save soil moisture content (SMC) and increase water use efficiency (WUE). A field experiment was carried out during 2019 on tomato crop in sandy soil. The variables included four levels of irrigation namely 70, 80, 90, and 100% of crop evapotranspiration (ETc) with three irrigation techniques which were subsurface drip irrigation (SSD), mulched surface drip irrigation (MD), and mulched subsurface drip irrigation (MSSD). The treatments of MSSD showed earlier maturity of tomato crop and longer picking period if compared to MD and SSD treatments. MSSD showed higher ability to save (SMC) than other irrigation techniques. Reduction of applied water from 100 to 70% ETc led to a decrease in tomato yield by 23.32% at MSSD compared to 28.47%, and 26.23% for MD, and SSD respectively. The highest WUE was at MSSD70 with 5.92 kg/m3 while the least was 4.21 kg/m3 with SSD100. The highest benefit/cost ratio was 9.03 with the treatment SSD70 while the highest profit of water unit was 2.19 US$/m3 with MSSD70. MSSD can be used with 90% of ETc without any significant difference in tomato crop while it can be used with 70% ETc to obtain higher WUE. The study recommended integrating rice straw mulching and subsurface drip irrigation with deficit irrigation as a strategy to save irrigation water and obtain the maximum possible benefits of water unit whether related to tomato yield or its revenue.

scholarly journals EFEITO DA FREQÜÊNCIA DE IRRIGAÇÃO SUBSUPERFICIAL POR GOTEJAMENTO NO DESENVOLVIMENTO DA CANA-DE-AÇÚCAR (Saccharum spp.)

Irriga ◽  
2002 ◽  
Vol 7 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Alexandre Barcellos Dalri ◽  
Raimundo Leite Cruz
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Dry Weight ◽  
Subsurface Drip Irrigation ◽  
Control Treatment ◽  
Initial Growth ◽  
Irrigation Frequency ◽  
Saccharum Spp ◽  
Subsurface Drip ◽  
Set Up

EFEITO DA Freqüência dE irrigação subsuperficial por gotejamento no desenvolvimento da cana-de-açúcar (Saccharum spp.)[1]   Alexandre Barcellos DalriRaimundo Leite Cruz Depto de Eng. Rural – FCA – UNESP – Campus de BotucatuCP 237 – Fone(14) 6802-7165 – CEP.  18603-970 – Botucatu – SP   1 RESUMO              Este trabalho teve como o objetivo, verificar o efeito da freqüência da irrigação subsuperficial por gotejamento no desenvolvimento inicial da cana-de-açúcar.            Os tubos gotejadores foram instalados sob a linha da cultura, a uma profundidade de 0,3 m. A cana-de-açúcar foi plantada no dia 03/03/2000 e a partir de 01/04/2000 iniciaram os tratamentos nas parcelas irrigadas. O delineamento experimental foi inteiramente casualizado, com quatro tratamentos, e quatro repetições, definidos por regimes de freqüência da irrigação. O sistema de irrigação era acionado quando a evapotranspiração da cultura atingisse 10 mm, 20 mm, e 30 mm, para os tratamentos 1, 2, e 3 respectivamente. O tratamento 4 foi definido como testemunha (não irrigado).             A colheita foi realizada no dia 05/12/2000 e através da avaliação de produção de massa fresca, diâmetro e comprimento do colmo, e produção de massa seca, observou-se que não houve diferença estatística entre os diferentes regimes de freqüência de irrigação. Todavia, quando comparado com a testemunha, as irrigações proporcionaram um aumento médio maior que 45 % na produção de massa fresca e seca final dos colmos.   UNITERMOS: irrigação por gotejamento subsuperficial, cana-de-açúcar.   DALRI, A.B., CRUZ, R.L. EFFECT OF SUBSURFACE DRIP IRRIGATION FREQUENCY ON GROWTH OF SUGARCANE (Saccharum spp.)   2 ABSTRACT             The aim of this study was to verify subsurface drip irrigation effects on sugarcane initial growth.           Drip lines were set up under crop rows at 0.3 m deep. Sugarcane was planted on March 3, 2000, and drip irrigation treatments began on April 1, 2000. The experimental design was entirely randomized with four treatments and four replications according  to irrigation frequency. Irrigation system was turned on when crop evapotranspiration reached 10, 20 and 30 mm for the treatments 1, 2 and 3, respectively. Treatment 4 was considered  the control (without irrigation).           Harvest was carried out on December 5, 2000, and based on fresh and dry weight, stem diameter and length evaluation no statistical differences for irrigation frequencies have been observed, although irrigation has increased fresh and dried yield over 45% when compared to the control treatment.  KEYWORDS: subsurface drip irrigation, sugarcane.[1] Parte da dissertação do primeiro autor, para obtenção do título de Mestre em Agronomia – Irrigação e Drenagem

Corn Production: A Subsurface Drip Irrigation Approach

2014 ◽  
Vol 666 ◽  
pp. 375-378
Author(s):  
Feng Liu ◽  
Guang Hua Wu ◽  
Ming Yu Zhang ◽  
Qiang Wang
Keyword(s):  
Water Use ◽  
Drip Irrigation ◽  
Critical Issue ◽  
Subsurface Drip Irrigation ◽  
Management Tool ◽  
Silt Loam ◽  
Irrigation Frequency ◽  
Corn Production ◽  
Irrigation Water Use ◽  
Subsurface Drip

Jilin Provincial Academy of Agricultural Machinery initiated studies in 2000 to develop the methodology for successful application of subsurface drip irrigation (SDI) for corn production on the deep silt loam soils of the northeast plains, China. Irrigation water use for corn can be reduced by 37–52% when using SDI compared with more traditional forms of irrigation in the region. Irrigation frequency has not been a critical issue when SDI is used for corn production on the deep silt loam soils of the region. A dripline spacing of 1.5 m has been found to be most economical for corn grown in 0.76 m spaced rows. Nitrogen fertigation was a very effective management tool with SDI, helping to maximize corn grain yield, while obtaining high efficiencies of nitrogen and water use. The research SDI systems have been utilized since 2000 without replacement or major degradation. SDI systems lasting 10–20 years are cost competitive for corn production with the more traditional forms of irrigation in the northeast plains for certain field sizes.

scholarly journals Polymer and deficit irrigation influence on water use efficiency and yield of muskmelon under surface and subsurface drip irrigation

2021 ◽  
Author(s):  
Faisal Zeineldin ◽  
Yousef Al-Molhim
Keyword(s):  
Water Use Efficiency ◽  
Open Field ◽  
Water Use ◽  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Subsurface Drip Irrigation ◽  
Growth Stages ◽  
Polymer Addition ◽  
Use Efficiency ◽  
Subsurface Drip

Water scarcity is a major constraint facing vegetable production sustainability in open field farming of arid regions like the Kingdom of Saudi Arabia. This study was carried out in an open field of the Research and Training Station of King Faisal University in the eastern region of the Kingdom. The objective was to assess the influences of the polymer addition (PA), deficit irrigation regime (DIR), and their combination on the production and water use efficiency (WUE) of muskmelons. PA treatments of 0.0, 0.2 and 0.4% and the irrigation treatments of 100, 75 and 50% of reference evapotranspiration (ET<sub>o</sub>), were imposed throughout the growth stages of muskmelons under surface drip irrigation (DI) and subsurface drip irrigation (SDI). The polymer addition of 0.4% enhanced the field water holding capacity of the medium sandy soil within the locality of the emitters by 43.6%. The soil water content of the surface layer within the vicinity of the polymer amended soil layer increased in a range of 72.4 to 99.4% to the combined influences of the 0.4% PA with the DI and SDI, but were marked more under the SDI. The combination of the 100% ET<sub>o</sub> DIR with polymer additions significantly (P &lt; 0.05) enhanced the muskmelon fruit yield (MFY) under the SDI compared to DI. The PA of 0.4% improved WUE and MFY by 67.7, 70.4% under the SDI, and 58.6, 24.2% under the DI, respectively. Without the polymer addition (0.0% PA), the MFY significantly (P &lt; 0.05) decreased with the increase of the DIRs under both DI and SDI.

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