Published
2021-12-21

How to Cite

García, J. ., Benavides Cardona, C., & Álvarez, D. (2021). Application of urea, DAP and KCL to coffee (Coffea arabica L.) seedbeds of the Castillo variety. Revista De Investigación Agraria Y Ambiental, 13(1), 33-49. https://doi.org/10.22490/21456453.4297
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Application of urea, DAP and KCL to coffee (Coffea arabica L.) seedbeds of the Castillo variety

DOI: https://doi.org/10.22490/21456453.4297
Section
Área Agrícola
García, J. Universidad de Nariño
Benavides-Cardona, C. Universidad de Nariño
Álvarez, D. Universidad de Nariño

Contextualization: In the coffee production system, the seedling stage is a determining factor in the success of the implementation and behavior of the crop. In this stage, the nutrition is a very relevant factor.

Knowledge gap: The use of substrates with diverse origins for the implementation of seedbeds in coffee makes difficult a correct diagnosis of fertility. For this reason, the nutrition in this phase of the productive system is based on recommendations and generalized formulas, that do not consider the differential needs of the varieties used and their state at the time of transplantation.

Purpose: The objective of this research was: evaluating the effect of Urea, DAP and KCl fertilizers and mixtures of these on the growth of coffee seedlings (variety Castillo) during the seedling stage. 

Methodology: The work was carried out in 2019, at the farm "La Quinta", in the municipality of Consacá (Nariño-Colombia), at 1650 meters above sea level, using a completely randomized design with eight treatments and eight repetitions distributed this way: 2.17g of Urea + 0.7 g of DAP; 4.3 g of DAP; 3.3 g of KCl; 0.6 g of Urea + 4.3 g of DAP; 2.1 g of Urea + 3.3 g of KCL; 4.3 g of DAP + 3.3 g of KCl; 2.1 g of Urea + 4.3 g of DAP + 3.3 g of KCl and a control without application. It was carried out an analysis of variance with these variables: height, number of leaves, dry and fresh weight of the seedlings, besides a functional growth analysis with biweekly evaluations. 

Results and conclusions: The treatment with DAP presented the highest height (20.65 cm), greater fresh and dry weight of stem (3.86 g; 1.43 g), greater total dry weight (5.33 g) greater leaf area (350.8 cm) and leaf area index (0.99). The Treatment with Urea + DAP showed better net assimilation rate (0.00029 g cm-2 d-1) and better crop growth rate (2.87e-05 g cm-2 d-1). The Treatment with DAP and KCl reached the highest value for relative growth rate (0.047g g-1d-1). In all cases, phosphorus became conclusive for the seedling stage, due to its presence was related to superior physiological behavior.