Influence of pruning and nitrogen nutrition on the vegetative development of blueberry (Vaccinium corymbosum L. cv. Biloxi)
DOI:
https://doi.org/10.54753/cedamaz.v12i2.1325Keywords:
Vaccinium corymbosum L. cv Biloxi, Management techniques, Ammonium sulfate, Nitrification inhibitorAbstract
The cranberry is a fruit tree of great economic importance worldwide, due to its high demand and the multiple benefits it confers to human health. In Ecuador, management techniques such as pruning and fertilization during the vegetative stage are little known. Based on this, the objective of the present research was to evaluate the vegetative development of blueberry (Vaccinium corymbosum L. cv Biloxi) subjected to two pruning intensities and different sources of nitrogen nutrition, one of them with nitrification inhibitor; on morphological and physiological variables of the plants, the pH and electrical conductivity (EC) of the soil. The trial was established at the Quinta Experimental Docente "La Argeliaïn the city of Loja, under an experimental design of completely randomized divided plots, with 4 treatments and 6 replications, the plot being the pruning factor (with 4 arms and without pruning) and the subplot the fertilization (ammonium sulfate with and without nitrification inhibitor). The results showed that the interaction between the pruning factor and nitrogen fertilization was null; the fertilization factor acted independently on morphological variables such as shoot length, plant cover, and shoot leaf area. The data indicated that the supply of ammonium sulfate with inhibitor promoted vegetative growth to a greater extent, while ammonium sulfate without inhibitor increased nitrogen content in the leaves. These results suggest that ammonium nitrogen supply with nitrification inhibitor promotes the development of blueberry cv. Biloxi plants. On the other hand, soil pH and electrical conductivity (EC) were altered by the application of nitrogen nutrition sources. Key words: Vaccinium corymbosum L. cv Biloxi, nitrification inhibitor.Metrics
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