Number of primary branches and productivity of two cultivars of coffee using drip irrigation

作者：da Costa Andre Ribeiro^*; Rezende Roberto; Lourenco de Freitas Paulo Sergio; Frizzone Jose Antonio; Helbel Junior Celso

来源：Revista Ciencia Agronomica, 2010, 41(4): 571-581.

DOI：10.1590/S1806-66902010000400009

• Coffee
• Irrigation water
• Drip irrigation

This experiment was conducted in an area of the Technical Center of Irrigation (CTI) of the State University of Maringa (UEM) with the objective of evaluating the effect of the application of different percentages of doses of NPK (50%; 100%; 150%; 200%) in the number of plagiotropic branches and in the productivity of the cultivars of coffee Obata and IAPAR - 59. The seedlings were planted in the spacing of 2.0 meters between lines and 1.0 meter within lines, characterizing a dense system. In this experiment was used the system of localized irrigation by dripping. The experiment followed a design completely randomized in split plots with four replications. The plots and subplots were composed by percentages of doses of NPK and crops, respectively. The interaction between those factors influenced significantly the productivity and the number of plagiotropic branches allowing concluding which dose of fertilizer is indicated for each cultivation. The maximum yield to grow Obata was achieved with doses of NPK percentages of 119.5%, 151.25% and 154.17% for non-irrigated crops, irrigated and fertilized, respectively. The maximum yield for IAPAR - 59 in nonirrigated crops, irrigated and fertilized was achieved with doses of NPK percentages of 137.83%, 162% and 151.75% respectively. Regarding the number of primary branches the best dose for cultivating crops in irrigated and Obata fertirrigated corresponded to a percentage of 200%, while the percentage dose of 150% showed the most suitable for IAPAR - 59 for the irrigated crops. The best productive was obtained for the fertirrigated cultivations.

• 出版日期2010-12