Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies

ABSTRACT Increased water scarcity necessitates the implementation of water-conserving irrigation management practices to sustain crop production, especially in water-limited areas. Field experiments were conducted to evaluate midday leaf water potential (LWP) of bell pepper (Capsicum annuum L. var....

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Autor principal:	Colak,Yesim Bozkurt
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2021
Materias:	Bell pepper Capsicum annuum leaf water potential partial root-zone drying regulated deficit irrigation.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000400491
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spelling	oai:scielo:S0718-583920210004004912021-10-27Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategiesColak,Yesim Bozkurt Bell pepper Capsicum annuum leaf water potential partial root-zone drying regulated deficit irrigation. ABSTRACT Increased water scarcity necessitates the implementation of water-conserving irrigation management practices to sustain crop production, especially in water-limited areas. Field experiments were conducted to evaluate midday leaf water potential (LWP) of bell pepper (Capsicum annuum L. var. annuum) irrigated differentially using surface drip (DI) and subsurface drip irrigation (SDI) systems during 2016 and 2017 growing seasons in the eastern Mediterranean environmental conditions. The treatments considered were deficit irrigations (I50, I75), regulated deficit irrigation (RDI), partial root-zone drying (PRD50) and full irrigation (I100) under DI and SDI systems. The experimental design was completely randomized in a split-plot system with four replicates per treatment. Deficit irrigation treatments of I75 and I50 received 75% and 50% I100, respectively; RDI was supplied with 50% I100 during vegetative growth stage until flowering, then received 100% of crop water requirement; PRD50 plots received 50% I100. Bell pepper plant water status was estimated by LWP. Higher LWP values were determined in I100 for two drip systems than the I75, I50, and PRD50; LWP correlated significantly (P < 0.01) and negatively with fresh pepper yield, DM yield, leaf area index (LAI), and mean soil water content and all these relations are best described with the curvilinear equations. In conclusion, bell pepper should be irrigated at mean LWP values between -0.89 and -0.95 MPa without any yield reduction. It is also concluded that RDI and I75 treatments appear to be good alternatives to I100 for sustainable bell pepper production under the Mediterranean environmental conditions.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.81 n.4 20212021-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000400491en10.4067/S0718-58392021000400491
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bell pepper Capsicum annuum leaf water potential partial root-zone drying regulated deficit irrigation.
spellingShingle	Bell pepper Capsicum annuum leaf water potential partial root-zone drying regulated deficit irrigation. Colak,Yesim Bozkurt Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
description	ABSTRACT Increased water scarcity necessitates the implementation of water-conserving irrigation management practices to sustain crop production, especially in water-limited areas. Field experiments were conducted to evaluate midday leaf water potential (LWP) of bell pepper (Capsicum annuum L. var. annuum) irrigated differentially using surface drip (DI) and subsurface drip irrigation (SDI) systems during 2016 and 2017 growing seasons in the eastern Mediterranean environmental conditions. The treatments considered were deficit irrigations (I50, I75), regulated deficit irrigation (RDI), partial root-zone drying (PRD50) and full irrigation (I100) under DI and SDI systems. The experimental design was completely randomized in a split-plot system with four replicates per treatment. Deficit irrigation treatments of I75 and I50 received 75% and 50% I100, respectively; RDI was supplied with 50% I100 during vegetative growth stage until flowering, then received 100% of crop water requirement; PRD50 plots received 50% I100. Bell pepper plant water status was estimated by LWP. Higher LWP values were determined in I100 for two drip systems than the I75, I50, and PRD50; LWP correlated significantly (P < 0.01) and negatively with fresh pepper yield, DM yield, leaf area index (LAI), and mean soil water content and all these relations are best described with the curvilinear equations. In conclusion, bell pepper should be irrigated at mean LWP values between -0.89 and -0.95 MPa without any yield reduction. It is also concluded that RDI and I75 treatments appear to be good alternatives to I100 for sustainable bell pepper production under the Mediterranean environmental conditions.
author	Colak,Yesim Bozkurt
author_facet	Colak,Yesim Bozkurt
author_sort	Colak,Yesim Bozkurt
title	Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
title_short	Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
title_full	Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
title_fullStr	Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
title_full_unstemmed	Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
title_sort	leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000400491
work_keys_str_mv	AT colakyesimbozkurt leafwaterpotentialforsurfaceandsubsurfacedripirrigatedbellpepperundervariousdeficitirrigationstrategies
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Leaf water potential for surface and subsurface drip irrigated bell pepper under various deficit irrigation strategies

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