scholarly journals Assessing the Effectiveness of Variable-Rate Drip Irrigation on Water Use Efficiency in a Vineyard in Northern Italy

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1964 ◽  
Author(s):  
Ortuani ◽  
Facchi ◽  
Mayer ◽  
Bianchi ◽  
Bianchi ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Water Use ◽  
Drip Irrigation ◽  
Root Zone ◽  
Irrigation System ◽  
Irrigation Management ◽  
Third Sector ◽  
Northern Italy ◽  
Variable Rate ◽  
Drip Irrigation System

Although many studies in the literature illustrate the numerous devices and methodologies nowadays existing for assessing the spatial variability within agricultural fields, and indicate the potential for variable-rate irrigation (VRI) in vineyards, only very few works deal with the implementation of VRI systems to manage such heterogeneity, and these studies are usually conducted in experimental fields for research aims. In this study, a VR drip irrigation system was designed for a 1-ha productive vineyard in Northern Italy and managed during the agricultural season 2018, to demonstrate feasibility and effectiveness of a water supply differentiated according to the spatial variability detected in field. Electrical resistivity maps obtained by means of an electro-magnetic induction sensor were used to detect four homogeneous zones with similar soil properties. In each zone, a soil profile was opened, and soil samples were taken and analyzed in laboratory. Two irrigation management zones (MZs) were identified by grouping homogeneous zones on the basis of their hydrological properties, and an irrigation prescription map was built consistently with the total available water (TAW) content in the root zone of the two MZs. The designed drip irrigation system consisted of three independent sectors: the first two supplied water to the two MZs, while the third sector (reference sector) was managed following the farmer’s habits. During the season, irrigation in the first two sectors was fine-tuned using information provided by soil moisture probes installed in each sector. Results showed a reduction of water use by 18% compared to the ‘reference’ sector without losses in yield and product quality, and a grape’s maturation more homogeneous in time.

scholarly journals APPLICATION OF DRIP IRRIGATION ON COTTON PLANT GROWTH (Gossypium sp.)

Agric ◽  
2017 ◽  
Vol 29 (2) ◽  
pp. 113-120
Author(s):  
Syahruni Thamrin ◽  
Budiman Budiman ◽  
Baso Darwisah ◽  
Junaedi Junaedi
Keyword(s):  
Plant Growth ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Irrigation Management ◽  
Growth Stages ◽  
Drip Irrigation System ◽  
Irrigation Design ◽  
Plant Growth Stages ◽  
Number Of Leaves ◽  
Average Plant

The condition of cotton planting in South Sulawesi is always constrained in the fulfillment of water. All plant growth stages are not optimal to increase production, so it is necessary to introduce good water management technology, such as through water supply with drip irrigation system. This study aims to analyze the strategy of irrigation management in cotton plants using drip irrigation system. Model of application by designing drip irrigation system and cotton planting on land prepared as demonstration plot. Observations were made in the germination phase and the vegetative phase of the early plants. Based on the result of drip irrigation design, the emitter droplet rate (EDR) was 34.266 mm/hour with an operational time of 4.08 min/day. From the observation of cotton growth, it is known that germination time lasted from 6 to 13 days after planting, the average plant height reached 119.66 cm, with the number of leaves averaging 141.93 pieces and the number of bolls averaging 57.16 boll.

scholarly journals DINÂMICA DA OBSTRUÇÃO DE EMISSORES USADOS NA CULTURA DA UVA UTILIZANDO ÁGUA SALINA DE POÇO SUBTERRANEO

Irriga ◽  
2018 ◽  
Vol 21 (3) ◽  
pp. 491
Author(s):  
ROBERTO CASTRO NASCIMENTO ◽  
PEDRO ROBINSON FERNANDES DE MEDEIROS ◽  
GABIANE SOUZA SANTOS ◽  
ELTON CARLOS PEREIRA VIEIRA DE ALENCAR TELES ◽  
DAYANE RODRIGUES GONÇALVES ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
High Frequency ◽  
Root Zone ◽  
Saline Water ◽  
Irrigation System ◽  
Salt Water ◽  
Field Capacity ◽  
Drip Irrigation System ◽  
Irrigation Systems ◽  
Country Club

DINÂMICA DA OBSTRUÇÃO DE EMISSORES USADOS NA CULTURA DA UVA UTILIZANDO ÁGUA SALINA DE POÇO SUBTERRANEO  ROBERTO CASTRO NASCIMENTO1; PEDRO ROBINSON FERNANDES DE MEDEIROS2; GABIANE SOUZA SANTOS1; ELTON CARLOS PEREIRA VIEIRA DE ALENCAR TELES1; DAYANE RODRIGUES GONÇALVES1 E ANA PRISCILA FELIX MARTINS2 1Engenharia Agrícola, Universidade Federal do Vale do São Francisco – Campus Juazeiro, Av. Antonio Carlos Magalhães, 510 Country Club, CEP: 48.902-300 – Juazeiro, BA. [email protected], [email protected], [email protected], [email protected] de Engenharia Agrícola e Ambiental, Universidade Federal do Vale do São Francisco – Campus Juazeiro, Av. Antonio Carlos Magalhães, 510 Country Club, CEP: 48.902-300 – Juazeiro, BA. [email protected]  1 RESUMO A irrigação localizada envolve os sistemas onde a água é aplicada diretamente sobre a região da raiz, em pequenas intensidades, mas com alta freqüência, a fim de manter a umidade do solo na zona radicular próxima à capacidade de campo, sendo de grande importância no cenário agrícola brasileiro, com aplicações voltadas principalmente para a fruticultura, horticultura e fertirrigação. Os sistemas de irrigação localizada de alta frequência são os mais afetados pela obstrução dos emissores decorrente da contaminação da água. Este trabalho objetivou avaliar a obstrução de emissores em um sistema de irrigação por gotejamento usado na cultura da uva por 5 anos, com fertirrigação, utilizando água salina de poço profundo, afim de apontar possíveis causas e sugerir soluções que permitam o uso otimizado da água de irrigação. Como referência, os tubos gotejadores inicialmente foram submetidos a 360 h de irrigação com água do Serviço Autônomo de Água e Esgoto de Juazeiro-BA (SAAE) e posteriormente com água do Rio São Francisco.  O trabalho foi desenvolvido no Laboratório de Irrigação, no Campus de Juazeiro/BA, da UNIVASF. A estatística foi à descritiva, por medidas de tendência central e por medidas de dispersão de dados. Como principais resultados têm-se que os emissores com cinco anos de uso na fertirrigação, apresentaram inicialmente um grau de entupimento de 16,5%, bem superior se comparado com o mesmo tubo gotejador novo, em torno de 7%; com um aumento nos valores para 18% e 11%, respectivamente. Foi verificado que a água salina causou uma obstrução parcial maior que a água tratada do abastecimento. PALAVRAS CHAVE: grau de entupimento, água salina, uniformidade de aplicação.  NASCIMENTO, R. C.; MEDEIROS, P. R. F.; SANTOS, G. S.; TELES, E. C. P. V. A.; GONÇALVES, D. R.; MARTINS, A. P. F.DYNAMICS OF OBSTRUCTION OF THE ISSUER USED IN GRAPE CULTURE USING SALINE WATER WELL UNDERGROUND    2 ABSTRACT The drip irrigation involves irrigation systems where water is applied directly to the root area in small intensities, but with high frequency in order to maintain soil moisture in the root zone close to field capacity, and is of great importance in the Brazilian agricultural scenario, with applications geared mainly for fruits, vegetables and fertigation. High frequency localized irrigation systems are the most affected by obstruction of emitter due to water contamination. This study evaluated the emitters obstruction in a drip irrigation system used in wine growing for 5 years, with fertigation using saline water from deep well, in order to identify possible causes and suggest solutions to the optimal use of water irrigation. As reference, the drip irrigation system was subject to 360 h of irrigation with water and then with SAAE water from São Francisco River. The work was developed in the Irrigation Laboratory in the campus of Juazeiro / BA, UNIVASF. Statistical analysis was descriptive, for measures of central tendency and data dispersion measures. And the main results is that for the issuing company with five years of use in fertigation, initially, the proportion was 16.5% clogging, much higher compared to the same new dripline, around 7%; with 18% and 11% increase in  values for, respectively. It has been found that the saline water caused a partial obstruction greater than that of the treated water supply. Keywords: degree of clogging, salt water, uniformity of application.

scholarly journals 296 Study of Water Applied on Two Varieties of Honeydew Melons with a Drip Irrigation System

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 442E-442
Author(s):  
Fabián Robles-Contreras ◽  
Raul Leonel Grijalva-Contreras
Keyword(s):  
Water Use ◽  
Water Scarcity ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Drip Irrigation System ◽  
Annual Crop ◽  
Yield And Quality ◽  
Honeydew Melon ◽  
Commercial Field

In the Caborca area, water scarcity is the main problem for the farmers, because of the depletion of the aquifer. This is the main reason why they are focusing on orchards and vegetables. Melon is the vegetable annual crop more extensively grown in this area and is furrow-irrigated with 120 cm of water. But, because of the scarcity of water, it is necessary to use drip irrigation. The objective of this study was to validate in a commercial field (15 ha) the effects of drip irrigation system on the water use, yield, and quality of two honeydew melon varieties (green flesh and orange flesh) in the Caborca area. Our results indicate that, with 50 cm of water applied, yields were 2146 to 2802 boxes/ha for green flesh and orange flesh, respectively. The predominant sizes were 4s and 5s with 25% and 38% for green flesh, and 5s and 6s with 42% and 36% for orange flesh. These sizes are the best for the exportation market.

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

Improving vineyard water use efficiency and yield with variable rate irrigation in California

2017 ◽  
Vol 8 (2) ◽  
pp. 574-577 ◽  
Author(s):  
L. A. Sanchez ◽  
B. Sams ◽  
M. M. Alsina ◽  
N. Hinds ◽  
L. J. Klein ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Cabernet Sauvignon ◽  
Variable Rate ◽  
Spatial Dependency ◽  
Use Efficiency ◽  
High Yields ◽  
Variable Rate Irrigation

A variable rate drip irrigation (VRDI) system was implemented in early 2013 in a 4.05-ha area inside a drip-irrigated Cabernet Sauvignon vineyard measuring 12.5 total ha. The VRDI area was split into 140 15×15-meter irrigation zones which were watered independently during three seasons with weekly schedules based on estimated actual ET. Irrigation was scheduled with the objective of decreasing spatial variability while maintaining high yields. Compared to an adjacent, 4.05-ha, conventionally drip irrigated section of the vineyard (CDI); VRDI increased yield and water use efficiency in all three years and decreased spatial dependency and structure in 2013 and 2015.

Development of a Low-cost Drip Irrigation System

2019 ◽  
pp. 1-8
Author(s):  
O. Lasisi ◽  
O. D. Isinkaye ◽  
B. O. Fati
Keyword(s):  
Drip Irrigation ◽  
Root Zone ◽  
Irrigation System ◽  
Low Cost ◽  
Food Crops ◽  
Drip Irrigation System ◽  
Retention Capacity ◽  
Medium Scale ◽  
Problematic Soils ◽  
Runoff Losses

The localized irrigation is the artificial application of water to the root zone of plants for the purpose of supplying the essential moisture requirement for plant growth. The system makes the production and availability of food crops, citrus and vegetables possible throughout the year on small and medium scale basis at an affordable cost. In places and periods of water scarcity, low-cost drip irrigation can be used for the economic growing of vegetables, citrus and food crops all –round the year. This paper aimed at developing a low-cost drip irrigation system to empower the small and medium scale farmers to produce crops during offseason at minimum operational cost with less human efforts. The field area of 126.4 m2 was properly cleared, stumped, ploughed, harrowed and leveled. The leveling was carried out to allow unobstructed flow and evenly distribution of water to the root of plants. The system does not only reduce water loss but also conserve water during the period of scarcity. The controlled moisture available to the plant at low soil tension results in faster growth, higher yields, better quality and more environmentally and health friendly. The system improves the penetration of water into problematic soils and reduces substantially deep percolation and runoff losses. The system also saves water, money, time and makes provision for all- season farming. The topography of the field was flat with its suitable soil texture, texture, retention capacity and pump for this work was designed and selected to be 1 hp. The system was developed using a simple principle of water flow through gravity to drip out water at regulated interval to irrigate farmland. The drum has 214 litres capacity and 121 emitters. The total cost of production was estimated to be ₦50, 790 which is affordable by small and medium scale farmers.

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