Influence of Deficit Irrigation on Various Phenological Stages of Temperate Fruits

ABSTRACT This study aimed to evaluate the behavior of soybean plants subjected to irrigation management with controlled water deficits in different phenological stages. The research was conducted in an experimental area of the Federal University of Tocantins (UFT), in Palmas-TO, Brazil. The experimental design was randomized blocks with four replicates, and treatments arranged in a split-plot scheme. The plots consisted of irrigation levels that induced plants to water deficit in the vegetative stage, reproductive stage and throughout the entire cycle, based on potential crop evapotranspiration (ETpc). The subplots corresponded to two soybean cultivars (M9144RR and TMG1288RR). The following agronomic variables were evaluated: days until flowering, days until maturation, plant height, first pod height, number of pods per plant, stem diameter, leaf area and yield. Irrigation management with moderate water deficit, 50% of ETpc, in the vegetative stage, promoted the best agronomic characteristics and contributed to increase the yield of the evaluated soybean cultivars, especially M9144RR.

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Responses of “Chardonnay” to deficit irrigation applied at different phenological stages: vine growth, must composition, and wine quality

Irrigation Science ◽

10.1007/s00271-012-0353-1 ◽

2012 ◽

Vol 30 (5) ◽

pp. 397-406 ◽

Cited By ~ 17

Author(s):

B. Basile ◽

J. Girona ◽

M. H. Behboudian ◽

M. Mata ◽

J. Rosello ◽

...

Keyword(s):

Deficit Irrigation ◽

Wine Quality ◽

Phenological Stages ◽

Vine Growth

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Approach to Yield Response of Young Almond Trees to Deficit Irrigation and Biostimulant Applications

Horticulturae ◽

10.3390/horticulturae5020038 ◽

2019 ◽

Vol 5 (2) ◽

pp. 38 ◽

Cited By ~ 1

Author(s):

Saray Gutiérrez-Gordillo ◽

Iván Francisco García-Tejero ◽

Amelia García-Escalera ◽

Pedro Galindo ◽

María del Carmen Arco ◽

...

Keyword(s):

Deficit Irrigation ◽

Physiological Responses ◽

Water Productivity ◽

Irrigation Treatment ◽

Yield Response ◽

Phenological Stages ◽

Crop Tolerance ◽

Drought Tolerant ◽

Mediterranean Countries ◽

Almond Trees

Water is the most limiting resource in many semi-arid areas of Mediterranean countries. Among the strategies to improve water productivity, the implementation of deficit irrigation (DI) strategies and the introduction of drought-tolerant crops in irrigated areas (such as almond) are being widely studied. Recently, the use of biostimulants to enhance crop tolerance to drought under water-scarcity scenarios is increasing. This work examines the response of three almond cultivars (‘Guara’, ‘Marta’, and ‘Lauranne’) in terms of yield and associated physiological responses in the main phenological stages to biostimulants (HYT® A and HYT® B plus) applied to young trees subjected to different irrigation levels: (i) a full irrigation treatment (FI), irrigated at 100% of crop evapotranspiration (ETC); and (ii) sustained-deficit irrigation (SDI75), irrigated at 75% of ETC. Significantly higher yields were obtained with HYT applications in 2 of 3 cultivars; these differences were most evident in the SDI75 treatment. In particular, ‘Guara’ registered the most significant improvements in nut yield when the HYT product was applied (15–20% higher). With regard to crop physiological responses, higher values of leaf water potential and stomatal conductance were noted with the HYT application in some cultivars and phenological stages. These results indicated that the use of biostimulants can be a feasible strategy for almond cultivation, especially when SDI is used.

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

Revista Latinoamericana de Desarrollo Económico ◽

10.35319/lajed.201116143 ◽

2011 ◽

pp. 7-28 ◽

Cited By ~ 1

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.

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