SciELO - Scientific Electronic Library Online

 
vol.9 issue3Sodic soil treated with agricultural gypsum, urban waste compost and vinasseApplication of gypsum and limestone in the reclamation of saline-sodic soils of the Pernambuco State author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Engenharia Agrícola e Ambiental

On-line version ISSN 1807-1929

Abstract

SILVA, Antônio M. da; COELHO, Gilberto  and  SILVA, Ricardo A. da. Irrigation timing and split application of fertilizer on productivity of the coffee plant in 4 harvests. Rev. bras. eng. agríc. ambient. [online]. 2005, vol.9, n.3, pp. 314-319. ISSN 1807-1929.  http://dx.doi.org/10.1590/S1415-43662005000300004.

The present work aimed to evaluate the effect of different periods of irrigation during and different fertilizer applications on productivity of coffee plant in 4 consecutive harvests. An experiment was accomplished in strips, in which the split fertilizer applications were tested: plot 1 received 12 applications of fertilizers in a manual way, plots 2, 3 and 4 received, respectively, 12, 24 and 36 applications of fertilizers through irrigation water. In the strips 3 irrigation periods were tested, 1/6 to 30/9, 15/7 to 30/9, 1/9 to 30/9 and a control treatment without irrigation, with 3 repetitions (blocks). The results of total coffee productivity expressed in kg ha-1, were submitted to the variance analysis and to mean comparison test, when it was necessary. The variance analysis detected significant effect for irrigation times and in harvests. The only significant interaction was between harvest and irrigation times, showing that the irrigation does not eliminate the biennial cycle of coffee plant productivity. The irrigation from 1/6 to 30/9, and from 15/7 to 30/9 provided better mean productivity of 3,852.2 and 3,527.1 kg ha-1, respectively.

Keywords : irrigation management; fertigation; biennial cycle.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese