Name: LUA VITHOR CHIXARO ALMEIDA FALCÃO ROSA
Publication date: 27/10/2023
Advisor:
Name |
Role |
|---|---|
| ROBSON BONOMO | Advisor |
Examining board:
| Name |
Role |
|---|---|
| ROBSON BONOMO | Advisor |
Summary: Coffee farming holds significant economic importance in the state of Espírito Santo, being the largest producer of processed coffee sacks in the country, representing 68.9% of national production. The work was carried out at the Federal University of Espírito Santo, at the experimental farm of CEUNES, with the objective of evaluating productive parameters, water use efficiency, and water distribution uniformity of the irrigated conilon coffee system subjected to surface drip, fixed subsurface, and laterally alternating subsurface irrigation. An experimental design was used in split plots with four blocks and two sources of variation. In the first source, we have the irrigation treatments: Sup100 - surface drip emitters on one side of the row of plants, receiving the corresponding irrigation depth for the total irrigation time (TI); Sub100 - drip emitters buried at a depth of 10 cm, single row, receiving 100% of TI; Sub100x2 - buried drip emitters, double row, receiving 50% of TI on each side; FDI50 - buried drip emitters, single row, receiving 50% of TI; APRI50 - buried drip emitters, double row, each side receiving 50% of TI and alternating the irrigated side every 15 days; NI - Non-irrigated. In the second source, we have the genotype factor, using three medium-cycle genotypes (LB1, Bamburral, and Verdim). There was a significant difference in productivity among the irrigation treatments, with lower values for the nonirrigated treatment. Grain yield did not show statistical differences among the treatments in all years evaluated. The APRI50 and FDI50 techniques showed a trend of reduced productivity compared to full irrigation but provided greater water use
efficiency and a slight increase in grain size classification. Differentiation was observed in the productive variables and grain classification by genotypes, but there was no significant interaction between the sources of variation, indicating consistency in the
results of irrigation management regardless of the genotype used.
