Influence of deficit irrigation on the ‘Catherine Sel.1’ peach cultivar in the semiarid region of Dobrogea

2021 ◽  
pp. 249-256
Author(s):  
L. Septar ◽  
C. Moale ◽  
C. Gavăt ◽  
V.A. Opriță ◽  
I. Caplan ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Semiarid Region ◽  
Peach Cultivar

scholarly journals Optimized Regulated Deficit Irrigation Management for Watermelon Cultivation in a Semiarid Region

2021 ◽  
Vol 9 (2) ◽  
pp. 113
Author(s):  
Kelly Nascimento Leite ◽  
Daniel Fonseca de Carvalho ◽  
Jose Maria Tarjuelo Martin- Benito ◽  
Geocleber Gomes de Sousa ◽  
Alfonso Dominguez Padilla
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Scarcity ◽  
Deficit Irrigation ◽  
Irrigation Management ◽  
Control Treatment ◽  
Water Volume ◽  
Semiarid Region ◽  
Regulated Deficit Irrigation ◽  
Use Efficiency

The present study aimed to validate the MOPECO crop simulation model and to determine a viable irrigation management for watermelon in the semiarid region of Northeast Brazil, using methodologies of optimized regulated deficit irrigation (ORDI) and constant deficit irrigation (CDI). The experiment was carried out during October to December 2013 and the second one from July to August 2014 in plots of land of producers in the Baixo Acaraú Irrigated Perimeter – Ceará, Brazil. Treatments were characterized by ORDI management (70, 80, 90% ETa/ETm ratio) and CDI management along the entire cycle (70, 80 and 90% ETm) and control treatment, irrigated with 100% of the water requirement of the crop (ETm). In terms of saving of water resources, the results showed that management with regulated deficit irrigation leads to favorable and economically viable results for the farmer, of water saving, especially in a situation of severe water scarcity, irrigation management with regulated water deficit (ORDI) can provide favorable and economically viable results for the farmer. The highest value of WUE (41.8 kg m-3) was obtained with the treatment of lowest water volume applied (352.1 L) in the second experiment, decreasing with the increase in the water volume used. The ORDI methodology represents a better water use efficiency for all treatments of deficit applied compared to CDI treatments. The difference of ORDI and CDI methodology provided an increase of up to 200% in the gross margin obtained with the exploration of the watermelon culture which represents a range of R$ 986.00 in profit in a situation of water scarcity, as in the case of the studied region, the strategy with water supply of 70% of ETa/ETm ratio regulated by phenological stage was recommended in order to obtain highest water use efficiency.

Sustainability of regulated deficit irrigation in a mid-maturing peach cultivar

2016 ◽  
Vol 34 (3) ◽  
pp. 201-208 ◽  
Author(s):  
Jordi Marsal ◽  
Jaume Casadesus ◽  
Gerardo Lopez ◽  
Merce Mata ◽  
Joaquim Bellvert ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Regulated Deficit Irrigation ◽  
Peach Cultivar

scholarly journals Fruit yield and root system distribution of 'Tommy Atkins' mango under different irrigation regimes

2014 ◽  
Vol 18 (4) ◽  
pp. 362-369 ◽  
Author(s):  
Marcelo R. dos Santos ◽  
Mauro A. Martinez ◽  
Sérgio L. R. Donato ◽  
Eugênio F. Coelho
Keyword(s):  
Phase I ◽  
Root System ◽  
Deficit Irrigation ◽  
Crop Production ◽  
Root Length Density ◽  
Fruit Yield ◽  
Phase Iii ◽  
Semiarid Region ◽  
Regulated Deficit Irrigation ◽  
Irrigation Regimes

This study aimed to evaluate the fruit yield and the distribution of 'Tommy Atkins' mango root system under different irrigation regimes in the semiarid region of Bahia. The experimental design was completely randomized with five treatments and three replicates: 1 - Irrigation supplying 100% of ETc in phases I, II and III; 2 - Regulated deficit irrigation (RDI) supplying 50% of ETc in phase I (beginning of flowering to early fruit growth); 3 - RDI supplying 50% ETc in phase II (start of expansion until the beginning of physiological maturity); 4 - RDI supplying 50% ETc in phase III (physiological mature fruits); 5 - No irrigation during all three phases. The regulated deficit irrigation supplying 50% of the ETc during phase I and II provided larger root length density of 'Tommy Atkins' mango. Regardless of management strategy, the roots were developed in all evaluated soil volume and the highest density is concentrated from 0.50 to 1.50 m distance from the trunk and in 0.20 to 0.90 m depth in the soil, that suggests this region to be the best place for fertilizer application as well for soil water sensor placement. The application of RDI during fruit set does not influence either root distribution or production. Root system and crop production is significantly reduced under no irrigation conditions.

Farmers' willingness to adopt irrigation for quinoa in communities of the Central Altiplano of Bolivia

2011 ◽  
pp. 7-28 ◽  
Author(s):  
Cristal Taboada ◽  
Armando Mamani ◽  
Dirk Raes ◽  
Erik Mathijs ◽  
Magalí García ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
New Technology ◽  
Farming Systems ◽  
Average Yield ◽  
Abiotic Conditions ◽  
Surplus Production ◽  
Irrigation Technology ◽  
Willingness To Adopt ◽  
Bolivian Altiplano ◽  
Main Factors

Quinoa is considered a strategic crop because it is well adapted to the adverse abiotic conditions of the Bolivian Altiplano; however, the average yield is low. Previous studies have demonstrated that quinoa yield would increase with deficit irrigation technology. Nevertheless, to irrigate quinoa is not a normal practice in the farming systems of the Altiplano. This paper examines the main factors that determine the attitude of farmers towards adopting deficit irrigation using a sample of 137 surveys in seven communities of the Central Altiplano. Statistic analysis demonstrates that the most important factors influencing farmers' willingness for irrigation adoption are the acreage planted with quinoa, quantity of surplus production for trading, and having irrigation experience. Also, the age and education level were important to know willingness to adopt a new technology. Therefore, deficit irrigation is more likely to be performed in area where farmers own larger fields and where there is already certain type of irrigation.

EFFECT OF DEFICIT IRRIGATION ON THE PRODUCTIVITY AND CHARACTERISTICS OF TOMATO

2013 ◽  
Vol 30 (2) ◽  
pp. 403-424
Author(s):  
Ahmed. M. Hassan ◽  
Mohamed E. Abuarab
Keyword(s):  
Deficit Irrigation
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