• DOI:10.7127/iv-inovagri-meeting-2017-res1940600
• Corpus ID: 158900304

DEFICIT IRRIGATION IN CONSECUTIVE CYCLES ON YIELD AND WATER USE EFFICIENCY IN ‘TOMMY ATKINS’ MANGO TREES

@inproceedings{Mesquita2017DEFICITII,
  title={DEFICIT IRRIGATION IN CONSECUTIVE CYCLES ON YIELD AND WATER USE EFFICIENCY IN ‘TOMMY ATKINS’ MANGO TREES},
  author={Naasoom Luiz Santos Mesquita and Paulo Roberto Fernandes J{\'u}nior and Marcelo Rocha dos Santos and Bismarc Lopes da Silva and M. Donato and Igor Nogueira DE Castro},
  year={2017}
}

• Naasoom Luiz Santos Mesquita, P. R. F. Júnior, +3 authors I. N. D. Castro
• Published 2017
• Mathematics

We aimed to understand two strategies of deficit irrigation and their effects on yield and water-use efficiency (WUE) in ‘Tommy Atkins’ mango trees, for three consecutive cycles. In the experiment with Regulated Deficit Irrigation (RDI), the treatments were: T1, full irrigation at every fruit development stage, 100% of ETc; T2, 100% of Etc at stages II and III and 50% of Etc at stage I; T3, 100% of ETc at stages I and III and 50% of ETc at stage II; T4, 100% ETc at stages I and II and 50% of ETc at stage III; T5, 100% of ETc at stages II and III and 75% of ETc at stage I; T6, 100% ETc at stages I and III and 75% of ETc at stage II and T7, 100% ETc at stages I and II and 75% of ETc at stage III. In the experiment with Partial Rootzone Drying (PRD) for the three crop stages: T1, 100% of ETc, conventional dripping irrigation; T2, 100%; T3, 80% of ETc; T4, 60% of ETc and T5, 40% of ETc. As for the treatments T2, T3, T4 and T5, the side to be irrigated was alternated every 15 days. At the end of 3 production cycles, we observed a reduction in productivity when RDI was applied at SI. The water-use efficiency was higher in the first cycle in relation to the third cycle under RDI. The PRD with 80% of ETc maintains the productivity and with 40% of ETc, increases WUE.