Effect of partial root-zone drying irrigation timing on potato tuber yield and water use efficiency

By W. Yactayo, D. A. Ramírez, R. Gutierrez, V. Mares, A. Posadas, R. Quiroz. 2013

99 citations recorded by the source corpus.

Partial root-zone drying (PRD) is an irrigation technique which has shown increased water use efficiency (WUE) without yield reductions in potato and other crops. However, questions remain as to the effect of the water restriction initiation timing and the level of alternate water restriction on the response of the potato crop. In this study, we tested: two PRD treatments with 25% (PRD25) and 50% (PRD50) of total water used in full irrigation (FI, as control), and a deficit irrigation treatment with 50% of water restriction (DI50). Two water restriction initiation timings were tested at: 6 weeks (WRIT6w) and 8 weeks (WRIT8w) after planting. Osmotic potential (π), osmotic adjustment, relative water content and chlorophyll concentration were assessed in four dates during the growing period. PRD50 initiated at WRIT6w showed the highest WUE without a tuber yield reduction respect to the control. While plants under PRDs and DI50 showed lower π than FI, PRDs treatments promoted higher osmotic adjustment particularly in WRIT6w. Our study suggests that early PRDs with mild water restriction allow drought hardiness (improving water stress response) and water saving avoiding a dramatic yield tuber reduction.

Subfields: Food Science, Plant Science, Soil Science

View Paper: https://www.semanticscholar.org/paper/8a9a11eb2539766b42f567764c084541bdede1eb

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

1. S. H. Ahmadi
2. T. George
3. Suat Irmak
4. P. White
5. I. Dodd
6. M. Taylor
7. A. Sepaskhah
8. J. Lynch

In Soil Science

1. S. H. Ahmadi
2. T. George
3. Suat Irmak
4. P. White
5. A. Sepaskhah

Citations in the corpus

• Climate Change and Consequences for Potato Production: a Review of Tolerance to Emerging Abiotic Stress (2017, background): “Whether the physiological and agronomic effects of PRD differ substantially from applying less water to the entire rootzone (conventional deficit irrigation - DI) has been investigated in many species (Dodd 2009) including potato (Saeed et al. 2008; Shahnazari et al. 2008; Ahmadi et al. 2010; Xie et”
• Effects of dynamic and static deficit and partial root zone drying irrigation strategies on yield, tuber sizes distribution, and water productivity of two field grown potato cultivars (2014, background): “Obviously the irrigation interval and duration depends on soil type, climate and cultivar (De la Hera et al., 2007; Ahmadi et al., 2010b; Yactayo et al., 2013).”
• Irrigation Management in Potato (Solanum tuberosum L.) Production: A Review (2021, background): “[31] found no impact on tuber yield when applying 50% of full irrigation through partial root-zone drying compared to full irrigation in Peru.”