Bibliographic citations
Velásquez, S., (2019). Densidad de siembra en la producción de Lechuga (Lactuca sativa L.) cv. Angelina bajo condiciones de La Molina [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4232
Velásquez, S., Densidad de siembra en la producción de Lechuga (Lactuca sativa L.) cv. Angelina bajo condiciones de La Molina []. PE: Universidad Nacional Agraria La Molina; 2019. https://hdl.handle.net/20.500.12996/4232
@misc{sunedu/3012869,
title = "Densidad de siembra en la producción de Lechuga (Lactuca sativa L.) cv. Angelina bajo condiciones de La Molina",
author = "Velásquez Medina, Silvana",
publisher = "Universidad Nacional Agraria La Molina",
year = "2019"
}
Optimal planting densities assure maximun crop yield and quality, as well as efficient use of resources such as wáter, light, nutrients and space. Planting densities above optimal may result in yield decrease due to intra and interespecífic competition, as well as proliferation of pathogens, while planting under optimal densities result in yield decrease due to inefficient uso of space. Lettuce is a crop, that based on variety and cultivar requires differentiated planting densities, however, in Perú there are no reports of this differentiation. In order to evaluate the effect of different planting densities on lettuce yield and quality, a trial was conducted from may to july 2019 at the Universidad Nacional Agraria La Molina. The experimental design was a randomized block desing with four replications. Treatments evaluated five different distances between plants: 20, 25, 30, 35 and 40 cm, to obtain populations of 125 000, 100 000, 85 000, 75 000 and 65 000 plants/hectare. Yield and quality characterístics were evaluated: total yield, comercial yield and non comercial yield. Also lettuce head weight, height, diameter and dry matter content (%). Results show the highest yield was obtained when the highest population was planted, on the other side better quality characteristics were shown when a lower planting density was used. It is concluded that lettuce cv. Angelina, under the conditions of the trial, is better planted at 125 000 plants/hectare.
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