Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations

Field experiments were conducted during 2015-17 at ICAR-Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru, to standardize the partial root zone drying irrigation in papaya with 12 treatments in RBD design. The results indicated that better soil moisture in the root zone could be m...

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Autores principales:	Manjunath B L, Laxman R H, Upreti K K, Raghupati H B
Formato:	article
Lenguaje:	EN
Publicado:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2017
Materias:	evaporation replenishment partial root zone drying irrigation shifting of laterals water use efficiency Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/8aa581bcd5a64e58b4f7c04fa7ad033d
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spelling	oai:doaj.org-article:8aa581bcd5a64e58b4f7c04fa7ad033d2021-12-02T04:02:02ZPartial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations0973-354X2582-4899https://doaj.org/article/8aa581bcd5a64e58b4f7c04fa7ad033d2017-12-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/19https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899Field experiments were conducted during 2015-17 at ICAR-Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru, to standardize the partial root zone drying irrigation in papaya with 12 treatments in RBD design. The results indicated that better soil moisture in the root zone could be maintained under drip irrigation by shifting laterals on either side at fortnightly intervals as compared to fixed laterals with thesame amount of water. Significantly more primary roots (16.5/plant) were observed when irrigation was scheduled on one side with single emitter meeting 60% of the evaporative demand. PRD irrigation through shifting of laterals recorded significantly higher transpiration rate especially at 50% of ER (8.05 m mol m-2 s-1) as compared to the control (3.95m mol m-2 s-1). Further, the same treatment recorded significantly lower fruit cavity index (0.26) with relatively higher fruit volume (1388 cm3). Irrigating papaya only on one side with single emitter resulted in significantly higher T.S.S (13.0%). Higher water productivity (23.7 kg/m3) could be obtained by scheduling the irrigation at 40% evaporation replenishment through shifting of laterals with saving of substantial water (1285m3/ha) resulting in higher water use efficiency (237.4 kg/ha.mm).Manjunath B LLaxman R HUpreti K KRaghupati H BSociety for Promotion of Horticulture - Indian Institute of Horticultural Researcharticleevaporation replenishmentpartial root zone drying irrigationshifting of lateralswater use efficiencyPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 12, Iss 2, Pp 143-149 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	evaporation replenishment partial root zone drying irrigation shifting of laterals water use efficiency Plant culture SB1-1110
spellingShingle	evaporation replenishment partial root zone drying irrigation shifting of laterals water use efficiency Plant culture SB1-1110 Manjunath B L Laxman R H Upreti K K Raghupati H B Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
description	Field experiments were conducted during 2015-17 at ICAR-Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru, to standardize the partial root zone drying irrigation in papaya with 12 treatments in RBD design. The results indicated that better soil moisture in the root zone could be maintained under drip irrigation by shifting laterals on either side at fortnightly intervals as compared to fixed laterals with thesame amount of water. Significantly more primary roots (16.5/plant) were observed when irrigation was scheduled on one side with single emitter meeting 60% of the evaporative demand. PRD irrigation through shifting of laterals recorded significantly higher transpiration rate especially at 50% of ER (8.05 m mol m-2 s-1) as compared to the control (3.95m mol m-2 s-1). Further, the same treatment recorded significantly lower fruit cavity index (0.26) with relatively higher fruit volume (1388 cm3). Irrigating papaya only on one side with single emitter resulted in significantly higher T.S.S (13.0%). Higher water productivity (23.7 kg/m3) could be obtained by scheduling the irrigation at 40% evaporation replenishment through shifting of laterals with saving of substantial water (1285m3/ha) resulting in higher water use efficiency (237.4 kg/ha.mm).
format	article
author	Manjunath B L Laxman R H Upreti K K Raghupati H B
author_facet	Manjunath B L Laxman R H Upreti K K Raghupati H B
author_sort	Manjunath B L
title	Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
title_short	Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
title_full	Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
title_fullStr	Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
title_full_unstemmed	Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
title_sort	partial root zone drying irrigation in papaya (carica papaya l.) for enhanced water use efficiency under limited water situations
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2017
url	https://doaj.org/article/8aa581bcd5a64e58b4f7c04fa7ad033d
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Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations

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