Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Feitosa, Erialdo de Oliveira; AraÃojo, Antonio FlÃ¡vio Batista; Oliveira, Calorine Maria Bayma; Lopes, Fernando Bezerra; Andradre, Eunice Maia de

doi:10.5897/ajar2016.11650

Cited by 4 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, the semiarid region has favorable edaphoclimatic conditions for the crop irrigated cultivation (Santos et al, 2008;Anjos et al, 2015;Feitosa et al, 2016;Feitosa et al, 2018), including the reduction in the incidence of fungal diseases related to high relative humidity (Lucena, 2016).…”

Section: Introductionmentioning

confidence: 99%

Irrigation of papaya in a sandy loam soil in the semiarid of Bahia, Brazil

Melo

Coelho

Silva

et al. 2020

Agraria

View full text Add to dashboard Cite

Irrigated farming enables producing papaya in Iaçu, located in the semiarid region of Bahia. However, water must be used efficiently, as the local availability of irrigation water resources is restricted. This study was conducted with the objective of defining the irrigation depth that provides the best agronomic performance of the Tainung No. 1 papaya cultivar, in a sandy loam soil of Iaçu, in the semiarid of Bahia, under the irrigation management conditions adopted by the producer. The experimental design used was of randomized blocks with four replicates. The experimental plot consisted of a row of plants, containing two border plants and twelve useful plants. Treatments corresponded to the total water depth of 1.103; 1.702; 2226; 2.751; 3.349 mm. Studied variables were height, leaf area, fruit number and yield, water use efficiency, fruit weight, fruit diameter and length, pulp width, pulp water content, pH, soluble solids and titratable acidity. Growth and production of the papaya tree responded positively to the applied water depths, but there was no interference in fruit quality. The yield showed linear adjustment, with a calculated maximum at 123.845 t ha-1 obtained for 3.349 mm. With the increasing water depth applied, there was a reduction in water use efficiency due to percolation water loss.

show abstract

Section: Introductionmentioning

confidence: 99%

Irrigation of papaya in a sandy loam soil in the semiarid of Bahia, Brazil

Melo

Coelho

Silva

et al. 2020

Agraria

View full text Add to dashboard Cite

show abstract

Deficient irrigation of vegetable crops

2022

View full text Add to dashboard Cite

Water is one of the main factors for the production of vegetable crops due to its crucial role in the absorption and transport of nutrients, temperature regulation and some physiological processes, including photosynthesis. Considering the growing needs of a growing population for food and nutrients, a significant part of agricultural research is focused on improving the use efficiency (WUE - Water use efficiency) and saving water without reducing yields. Given the difficulty of increasing WUE through selection due to the tradeoff between photosynthesis and transpiration, agronomic strategies are needed. Due to the shallow root system and the fresh sale of vegetable products, vegetable crops are relatively more sensitive to moisture than field crops. Deficit irrigation (DI) is a direct approach to saving water by reducing irrigation to increase water productivity (WP - Water productivity). Regulated deficit irrigation (RDI) and partial root drying (PRD) are two widely used DI planning methods along with the classic DI approach. We searched the peer-reviewed literature for studies reporting yield differences in vegetable crops subjected to irrigation deficits. The search was conducted on Google Scholar and Web of Science using various combinations of the following keywords: vegetable crop yield and irrigation deficit or moisture shortage or water shortage or drought. Moderate levels of water stress (<65% FI) adversely affect vegetable yields regardless of external factors such as soil structure, climate and production system. This level of irrigation is justified for regions where water restrictions are already in place or forecast. Based on WP growth, irrigation levels as low as 35–50% FI for tomato and pepper, and 50–65% FI for onions and <35% FI for eggplant and watermelon are optimal for areas with severe water scarcity. However, a higher water deficit may also have an adverse effect on quality in terms of reduced fruit/root/bulb size.

show abstract

Implementing Sustainable Irrigation in Water-Scarce Regions under the Impact of Climate Change

et al. 2020

View full text Add to dashboard Cite

The sustainability of irrigated agriculture is threatening due to adverse climate change, given future projections that every one in four people on Earth might be suffering from extreme water scarcity by the year 2025. Pressurized irrigation systems and appropriate irrigation schedules can increase water productivity (i.e., product yield per unit volume of water consumed by the crop) and reduce the evaporative or system loss of water as opposed to traditional surface irrigation methods. However, in water-scarce countries, irrigation management frequently becomes a complex task. Deficit irrigation and the use of non-conventional water resources (e.g., wastewater, brackish groundwater) has been adopted in many cases as part of a climate change mitigation measures to tackle the water poverty issue. Protected cultivation systems such as greenhouses or screenhouses equipped with artificial intelligence systems present another sustainable option for improving water productivity and may help to alleviate water scarcity in these countries. This article presents a comprehensive review of the literature, which deals with sustainable irrigation for open-field and protected cultivation systems under the impact of climatic change in vulnerable areas, including the Mediterranean region.

show abstract

Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Cited by 4 publications

References 18 publications

Irrigation of papaya in a sandy loam soil in the semiarid of Bahia, Brazil

Irrigation of papaya in a sandy loam soil in the semiarid of Bahia, Brazil

Deficient irrigation of vegetable crops

Implementing Sustainable Irrigation in Water-Scarce Regions under the Impact of Climate Change

Contact Info

Product

Resources

About