Stalk yield of sugarcane cultivars under different water regimes by subsurface drip irrigation/Produtividade de colmos de cultivares de cana-de-acucar submetidas a diferentes regimes hidricos por gotejamento subsuperficial
This study aimed to evaluate the stalk yield of ten sugarcane cultivars (RB962962, RB931011, RB931530, RB98710, RB92579, RB867515, RB863129, SP791011, RB72545 and VAT90212) subjected to water deficit, full irrigation and water surplus by subsurface drip irrigation, during three cropping seasons (201...
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Veröffentlicht in: | Revista brasileira de engenharia agrícola e ambiental 2017-03, Vol.21 (3), p.169 |
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Sprache: | eng |
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Zusammenfassung: | This study aimed to evaluate the stalk yield of ten sugarcane cultivars (RB962962, RB931011, RB931530, RB98710, RB92579, RB867515, RB863129, SP791011, RB72545 and VAT90212) subjected to water deficit, full irrigation and water surplus by subsurface drip irrigation, during three cropping seasons (2011-2014). The experiment was conducted at the Experimental Field of Embrapa Meio-Norte, Teresina, Piaui State, Brazil, in dystrophic Red Yellow Argisol. The cultivars RB962962 (162.3 Mg [ha.sup.-1]) and RB867515 (158.5 Mg [ha.sup.-1]) have better stalk yield compared with other cultivars in all water regimes and cropping seasons. Key words: Saeeharum afficinarum L. irrigation management drip irrigation cultivar selection Objetivou-se, neste estudo, avaliar a produtividade de colmos de dez cultivares de cana-de-acucar (RB962962, RB 931011, RB931530, RB98710, RB92579, RB867515, RB863129, SP791011, RB72454 e VAT90212) submetida aos regimes hidricos de deficiencia, irrigacao plena e excedente hidrico, por gotejamento subsuperficial, durante tres ciclos de cultivo (2011-2014). O ensaio foi conduzido no Campo Experimental da Embrapa Meio-Norte, Teresina, PI, em Argissolo Vermelho-Amarelo Distrofico. As cultivares RB962962 (162,3 Mg [ha.sup.-1]) e RB867515 (158,5 Mg [ha.sup.-1]) apresentam melhor produtividade de colmos em comparacao as demais cultivares, em todos os regimes hidricos e ciclos de cultivo. Palavras-chave: Saccharum afficinarum L. manejo de irrigacao fertirrigacao selecao de cultivares |
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ISSN: | 1415-4366 |