Reguladores vegetais aplicados no sulco de plantio em cultivares de cana -de-açúcar
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New production Technologies becomes an important strategy to increase the productivity of sugarcane. The present work aimed to study the effects of application, in the planting furrow, of plant regulators (RVs - indolbutiric acid (auxin - related) a 0,05 g dm<sup>-3</sup>; kinetin (cytokinin - related) a 0,09 g dm<sup>-3</sup> and giberelic acid (giberelin - related) a 0,05 g dm <sup>-3</sup>) in eight cultivars of sugarcane to obtain information those that better adapt in the edaphic and climatic conditions of region of Pereira Barreto (state SP). The experiment was conducted at Santa Terezinha Farm, located in Pereira Barreto, state São Paulo, Brazil, in an experimental randomized block design scheme in a split plot containing 8 cultivars and four replications (8x2x4). The cultivars were: SP89-1115, SP81-3250, SP83-2847, SP91-3011, RB72454, RB867515, RB835054 e SP91-3440 treated or not treated with RVs. The results showed that the use of plant regulators in the furrow applied in cultivars SP89-1115, SP83-2847 e SP81 -3250 promotes increase in number of tillers, increase in diameter of stalk and thus an increase on productivity of stalks.
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Diameter of stalk and productivity of stalks, Saccharum spp, Tillering
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Português
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Scientia Agraria, v. 14, n. 2, p. 69-75, 2013.
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