Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions

Abstract This study aimed to evaluate in the papaya Tainung genotype, the effects of partial root-zone drying (PRD) technique on soil water regimes by using different frequencies of shifting irrigation-side of plant row and the effects of PRD technique on (1) crop agronomic performance, (2) titratab...

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Autores principales:	Dionei Lima Santos, Eugênio Ferreira Coelho, Rubens Alves de Oliveira, Roberto Filgueiras, Márcio da Silva Alves, Weverton Pereira Rodrigues, Eliemar Campostrini, Antônio Hélder Rodrigues Sampaio, João Batista Ribeiro da Silva Reis, Fernando França da Cunha
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/41df711fd659403a8ddf83407cea595f
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spelling	oai:doaj.org-article:41df711fd659403a8ddf83407cea595f2021-12-02T16:49:46ZImpact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions10.1038/s41598-021-90078-w2045-2322https://doaj.org/article/41df711fd659403a8ddf83407cea595f2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90078-whttps://doaj.org/toc/2045-2322Abstract This study aimed to evaluate in the papaya Tainung genotype, the effects of partial root-zone drying (PRD) technique on soil water regimes by using different frequencies of shifting irrigation-side of plant row and the effects of PRD technique on (1) crop agronomic performance, (2) titratable fruit acidity (TA), (3) total soluble solids (TSS), and TSS/TA ratio. Also, we analyze the spatial dynamic of papaya condition using normalized difference vegetation index (NDVI) from different satellite images. The study was conducted in the semi-arid region of Bahia (BA) and Minas Gerais (MG), Brazil. The combination of 100% (Full irrigation—FU), 50%, and 35% in the irrigation depth (WID) and frequencies of shifting plant-row side irrigation of 0 (Fixed Irrigation—FX), 7, 14, and 21 days were applied. Nine treatments were studied in BA and five in MG. The water available in the soil was reduced to 44% for frequencies of shifting plant-row side irrigation of 7 days, 50% for 14 days, and 85% for 21 days, compared to the soil water availability at field capacity. Partial water deficit in the soil through the PRD technique did not significantly reduce the total root length, effective root depth, and root effective horizontal distance of the papaya Tainung genotype. However, PRD treatments showed leaf abscission, which resulted in reduced leaf area and NDVI values, especially in the MG experiment. Papaya yield and fruit quality were not affected. However, except for PRD 21 35%, irrigation water depth reduced to 50 and 35% under PRD increased crop water productivity (CWP) in papaya plants. Thus, the PRD technique may save 35% of WID using the alternation of lateral shift irrigation of crop row every 7 days under water scarcity in semi-arid regions. The NDVI index was important to compare the papaya canopy vigor between the experimental areas studied. We also confirmed the potential of NDVI to monitor the vigor of papaya canopy, since we could notice the sensibility of NDVI to identify water stress in papaya in higher vapor pressure deficit (VPD) conditions occurred in October 2016 and January 2017 in Bom Jesus da Lapa-BA. Therefore, the PRD strategy can be a useful tool to save water in papaya cultivation under semi-arid conditions.Dionei Lima SantosEugênio Ferreira CoelhoRubens Alves de OliveiraRoberto FilgueirasMárcio da Silva AlvesWeverton Pereira RodriguesEliemar CampostriniAntônio Hélder Rodrigues SampaioJoão Batista Ribeiro da Silva ReisFernando França da CunhaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dionei Lima Santos Eugênio Ferreira Coelho Rubens Alves de Oliveira Roberto Filgueiras Márcio da Silva Alves Weverton Pereira Rodrigues Eliemar Campostrini Antônio Hélder Rodrigues Sampaio João Batista Ribeiro da Silva Reis Fernando França da Cunha Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
description	Abstract This study aimed to evaluate in the papaya Tainung genotype, the effects of partial root-zone drying (PRD) technique on soil water regimes by using different frequencies of shifting irrigation-side of plant row and the effects of PRD technique on (1) crop agronomic performance, (2) titratable fruit acidity (TA), (3) total soluble solids (TSS), and TSS/TA ratio. Also, we analyze the spatial dynamic of papaya condition using normalized difference vegetation index (NDVI) from different satellite images. The study was conducted in the semi-arid region of Bahia (BA) and Minas Gerais (MG), Brazil. The combination of 100% (Full irrigation—FU), 50%, and 35% in the irrigation depth (WID) and frequencies of shifting plant-row side irrigation of 0 (Fixed Irrigation—FX), 7, 14, and 21 days were applied. Nine treatments were studied in BA and five in MG. The water available in the soil was reduced to 44% for frequencies of shifting plant-row side irrigation of 7 days, 50% for 14 days, and 85% for 21 days, compared to the soil water availability at field capacity. Partial water deficit in the soil through the PRD technique did not significantly reduce the total root length, effective root depth, and root effective horizontal distance of the papaya Tainung genotype. However, PRD treatments showed leaf abscission, which resulted in reduced leaf area and NDVI values, especially in the MG experiment. Papaya yield and fruit quality were not affected. However, except for PRD 21 35%, irrigation water depth reduced to 50 and 35% under PRD increased crop water productivity (CWP) in papaya plants. Thus, the PRD technique may save 35% of WID using the alternation of lateral shift irrigation of crop row every 7 days under water scarcity in semi-arid regions. The NDVI index was important to compare the papaya canopy vigor between the experimental areas studied. We also confirmed the potential of NDVI to monitor the vigor of papaya canopy, since we could notice the sensibility of NDVI to identify water stress in papaya in higher vapor pressure deficit (VPD) conditions occurred in October 2016 and January 2017 in Bom Jesus da Lapa-BA. Therefore, the PRD strategy can be a useful tool to save water in papaya cultivation under semi-arid conditions.
format	article
author	Dionei Lima Santos Eugênio Ferreira Coelho Rubens Alves de Oliveira Roberto Filgueiras Márcio da Silva Alves Weverton Pereira Rodrigues Eliemar Campostrini Antônio Hélder Rodrigues Sampaio João Batista Ribeiro da Silva Reis Fernando França da Cunha
author_facet	Dionei Lima Santos Eugênio Ferreira Coelho Rubens Alves de Oliveira Roberto Filgueiras Márcio da Silva Alves Weverton Pereira Rodrigues Eliemar Campostrini Antônio Hélder Rodrigues Sampaio João Batista Ribeiro da Silva Reis Fernando França da Cunha
author_sort	Dionei Lima Santos
title	Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
title_short	Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
title_full	Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
title_fullStr	Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
title_full_unstemmed	Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
title_sort	impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/41df711fd659403a8ddf83407cea595f
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Impact of soil water regimes and partial root-zone drying in field-grown papaya in semi-arid conditions

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