TROCAS GASOSAS DO TOMATEIRO INDUSTRIAL CULTIVADO COM UREIA TRATADA COM NANOCELULOSE

Abstract

The tomato culture originated in the South American continent, being domesticated by the Inca peoples, cultivated and named as “Tomati” by the Mayan peoples. The aim of this study was to evaluate the efficiency of urea treated with nanocellulose in tomato crop. The soil is classified as STROPHIC RED-YELLOW LATOSOL, with a clayey texture. Planting was carried out in July 2019. The experimental design was in randomized blocks consisting of six treatments in five replications, with an additional treatment. Treatments comprise 0.0; 60; 90; 120 and 150 kg ha-1 of N, urea source treated with nanosilica and nanofibrillated cellulose. The additional treatment was 120 kg ha-1 of N, a conventional urea source. The treatments with urea treated with nanocellulose were provided in a single plot in the planting furrow, with the conventional management adopted by farmers. The experimental units analyzed were composed of 5.0 x 3.3 m, composed of three rows containing 16 plants spaced 0.3 m between plants and 1.1 m between rows. The total area of each plot is 16.5 m2. Irrigation was performed by superficial dripping performed by a self-compensating drip tube. The following variables were evaluated: gas exchange, photosynthetic rate, respiratory rate, stomatal conductance, internal and external CO2, electron transport rate. With a productivity of 39 tons per hectare. There was no significant result for gas exchange.