Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations
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| Format: | Artículo científico |
| Sprache: | en |
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Society for Promotion of Horticulture
2017
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| author | B.L. Manjunath |
| author_facet | B.L. Manjunath |
| contents | Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations B.L. Manjunath R.H. Laxman K.K. Upreti H.B. Raghupathi Agrociencias shifting of laterals water use efficiency Evaporation replenishment partial root zone drying irrigation 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). 2017 artículo científico 0973-354X https://www.redalyc.org/articulo.oa?id=577077091007 en http://www.redalyc.org/revista.oa?id=5770 Journal of Horticultural Sciences application/pdf Society for Promotion of Horticulture Journal of Horticultural Sciences (India) Num.2 Vol.12 |
| format | Artículo científico |
| id | redalyc_577077091007 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Society for Promotion of Horticulture |
| spellingShingle | Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations B.L. Manjunath Agrociencias shifting of laterals water use efficiency Evaporation replenishment partial root zone drying irrigation Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations B.L. Manjunath R.H. Laxman K.K. Upreti H.B. Raghupathi Agrociencias shifting of laterals water use efficiency Evaporation replenishment partial root zone drying irrigation 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). 2017 artículo científico 0973-354X https://www.redalyc.org/articulo.oa?id=577077091007 en http://www.redalyc.org/revista.oa?id=5770 Journal of Horticultural Sciences application/pdf Society for Promotion of Horticulture Journal of Horticultural Sciences (India) Num.2 Vol.12 |
| title | Partial root zone drying irrigation in papaya (Carica papaya L.) for enhanced water use efficiency under limited water situations |
| topic | Agrociencias shifting of laterals water use efficiency Evaporation replenishment partial root zone drying irrigation |
| url | https://www.redalyc.org/articulo.oa?id=577077091007 |