Abstract:The objective of this work was to evaluate the effects of salt stress and competition on the development and growth of lettuce plants (Lactuca sativa var. iceberg). The plants were grown under greenhouse conditions with 50% interception of solar radiation. Iceberg lettuce seedlings were transplanted to 8-liter pots with surface area of 4.9 dm2 filled with 5 kg of a substrate composed of soil, sand, and manure at the ratio of 3:1:1 v v-1. The experiment was set up in a completely randomized design with a 6 × 2 … Show more
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