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Environmental and soil management for vegetable crops growing in the Summer

Abstract

Increase vegetable yield in the summer is the most challenge of the horticulture, especially in warm regions such as the West of São Paulo state. Some techniques can be used to reduce the air and soil temperature, such as shade screens and no tillage associated with cover crops. Studies of vegetable yield in the summer under shade netting associated with sustainable soil management, as well as the adaptability of vegetable crops cultivars to the planting on cover crops are issues that need to be studied in the summer season in warm regions. The objectives of this work are: i - to evaluate environment management (shade levels) associated with soil tillage (with or without beds) on lettuce and green onion yield; ii - evaluate the adaptability of different lettuce and rocket cultivars to no tillage associated to B. ruziziensis straw in the summer. The impact of these techniques on crop productivity, weed pressure and soil temperature will be evaluated. Four experiments will be carried out in a randomized complete block design in a split-plot arrangement with four replications. The lettuce and green onion yield in different environment management (full sun, aluminet®, black screen 35% and 50%) and soil tillage (with or without bed) will be evaluated in the experiments 1 and 2, respectively. In the experiment 3 will be evaluated two different soil management (no tillage associated to B. ruziziensis straw and tillage) and four lettuce cultivars ("Solaris", "Vanda", "Vera" and "Amanda"). Two successive crops will be planted in the same area. Different soil management (no tillage associated with B. ruziziensis straw and tillage) rocket varieties ("Cultivada", "Selecta" and "Folha larga") will be evaluated in the experiment 4. The data will be submitted to analysis of variance and the means compared by Tukey test at 5% of probability. (AU)

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