Marcelo Rossi Vicente

Development and production of fertigated coffee trees in the west region of Bahia, Brazil

This work was to evaluate the effects of different doses and fertigation parceling on the production and development of irrigated coffee drip in the Western Bahia region. He carried out the work on the farm White River Cafe, located in Barreiras - BA in coffee adults, approximately 3.5 years of age, Catuai IAC 144. The experiment was conducted in a factorial 3 x 3, three levels of nitrogen and potassium fertilization (900/800, 600/500 and 300/250 kg ha -1 yr -1 N and K 2 O) in 3 monthly installments of fertigation (2, 4 and 8 times). The variables in the experiment were: productivity, growth, yield and sieve. The doses of 600/500 and 900/800 kg ha -1 yr -1 N / K 2 O, the highest yield of the coffee. The installments of fertigation at two and eight times per month were higher in productivity. A higher effect of splitting the fertigation, on the effect of N and K 2 O in the coffee development variables (crown diameter and plant height). There was no effect of dose and fertigation parceling on rating sieve of coffee beans.

Efeitos da irrigação na produção e no desenvolvimento do cafeeiro na região oeste da Bahia

Irrigation redesigned the distribution of the cultivation of coffee in Brazil, and upon this, new studies in water consumption and in its relationships with production and growth in coffee became necessary. The objective of this work was to evaluate the effects of irrigation on the production and growth in coffee irrigated by drip irrigation, in the West region of Bahia. For this, a trial was carried out in the farm Cafe do Rio Branco, located in Barreiras – BA. The experiment was caried out with adult plants of coffee of the variety Catuai Vermelho, approximately 3.5 years old and set up in a randomized block design, with five treatments and four replicates. The treatments corresponded to 75, 85, 100, 125 and 150% of the irrigation depth and were calculated by the Irriplus software. It was evaluated the productivity, water use efficiency (WUE), vegetative development, sieve classification, as well as the yield and maturation of fruits. A significant effect of the irrigation depth in yield, WUE and maturation of fruits (green and cherry) was observed at the end of four consecutive harvests. The estimated maximum productivity (60 sc ha-1), was obtained with 129% of the irrigation depth and a maximum WUE (5.7 kg mm-1) obtained with 75%. As to maturation, they were significant only for green (19.7%) and cherry fruits (67.5) with the irrigation depths of 119 and 121%, respectively. There was no significant effect of the different irrigation depths in the vegetative development, sieve classification and yield of fruits.