Avaliação De Cultivares De Cana-De-Açúcar Em Santa Maria-Rs

Aude, Maria Isabel da Silva; Marchezan, Enio; Dariva, Thelmo Centro de Ciências Rurais; Pasqualetto, Antônio

doi:10.1590/s0103-84781994000300004

Cited by 2 publications

(1 citation statement)

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“…Porém, Aude et al (1994), estudando adaptação de clones de cana-de-açúcar, em Santa Maria, RS, constataram que nove dos dez clones testados poderiam ser recomendados para a região, pois apresentaram alta produção de colmos industrializáveis e elevados teores de sólidos solúveis no caldo. Acrescentaram, ainda, ser possível realizar até quatro cortes, visto que somente ocorreu decréscimo acentuado da produtividade de colmos a partir da quinta colheita.…”

Section: Introductionunclassified

Produtividade de colmos em clones de cana-de-açúcar

et al. 2017

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Produtividade de colmos em clones de cana-de-açúcar 1 O objetivo deste trabalho foi avaliar a produtividade e as características de colmos de 25 clones de cana-de-açúcar, nos cultivos de cana-planta e cana-soca. O experimento foi realizado nos anos agrícolas de 2009-2010 (cana-planta) e 2010-2011 (cana-soca), em Jaguari, RS. O delineamento utilizado foi o de blocos ao acaso, em esquema fatorial (clones e cultivos de cana-planta e cana-soca), com três repetições. Ao final de cada cultivo, foram realizadas avaliações de comprimento, diâmetro, número e produtividade de colmos. Os dados obtidos foram submetidos à análise da variância e, as médias, comparadas pelo teste de Tukey, a 5% de probabilidade A produtividade média de colmos dos clones mais produtivos de ciclo precoce, nos cultivos de cana-planta e cana-soca (96,6 e 123,4 t ha -1 , respectivamente) foi semelhante à obtida com os clones mais produtivos de ciclo médio-tardio (101,5 e 128,0 t ha -1 , respectivamente). No cultivo de cana-soca, a produtividade média de colmos superou a obtida no cultivo de cana-planta, com 13 dos 25 clones avaliados. Em geral, os clones mais produtivos apresentam valores elevados de número e de comprimento de colmos, sendo observada baixa variação do diâmetro de colmos dos materiais testados. Os clones RB965911, RB925345, RB855156, RB987935, RB935744, RB867515, RB975019, RB925268, RB845210 e RB975329 são os mais adaptados às condições edafoclimáticas da região da Depressão Central do Rio Grande do Sul, apresentando maior produtividade de colmos, com valores acumulados, nos dois cultivos, superiores a 200 t ha Productivity and agronomic variables in sugarcane clonesThe objective of this study was to evaluate the productivity and characteristic of stalks from 25 sugarcane clones in plant-cane and ratoon cultivations. The experiment was conducted in Jaguari, RS, Brazil, during the 2009/2010 (plant cane) and 2010/2011 (ratoon) growing seasons. The experimental design was randomized blocks in a 25 × 2 factorial arrangement (25 clones and two growing seasons), with three replications. At the end of each growing season, the length, diameter, and number and productivity of stalks were evaluated. The data were subjected to analysis of variance and means were compared by Tukey test at 5% probability. The average stalk yield of in the most productive clones with early cycle in plant-cane and ratoon (96.6 and 123.4 t ha -1 , respectively) was similar to that obtained with the most productive clones with mid-late cycle (101.5 and 128 t ha -1 , respectively). The stalk yield in ratoon exceeded that obtained in the plant-cane in 13 of the 25 clones evaluated. In general, the most productive clones have elevated number and length of stalks, with an observed low variation in stalk diameter of the tested materials. The clones RB965911, RB925345, RB855156, RB987935, RB935744, RB867515, RB975019, RB925268, RB845210, and RB975329 are the most adapted to the soil and climatic conditions of the Depressão Central do Rio Grande do Sul region, with hi...

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Section: Introductionunclassified

Produtividade de colmos em clones de cana-de-açúcar

et al. 2017

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Sorghum Hybrid CVSW 81198 and Its Weed Community in Periods With and Without Weeding

Giancotti

Nepomuceno²,

Moro³

et al. 2020

Rev. Cien. Agr.

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The aim of this study was to evaluate the weed populations of sweet sorghum hybrid CVSW 81198 and its interference capacity in increasing periods with and without weeding. Two experiments were carried out, one during the summer and another during the autumn in the municipality of Jaboticabal, São Paulo state, Brazil. For each experiment, two treatment groups were established: one consisting of increasing periods without weeding and another of increasing periods with weeding. Periods were 0, 4, 7, 14, 21, 28, 35, 42 and 56 days after emergence (DAE) in the summer experiment and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 DAE in the autumn experiment. Phytosociological studies of the weed community were carried out in each treatment, with emphasis on the importance index of each weed population. Under the experimental conditions, Amaranthus spp. and Alternanthera tenella were the most important species in the weed community of sweet sorghum grown during summer and autumn, respectively. With the natural infestation of the weed community, sorghum hybrid CVSW 81198 did not suffer interference in crop development and stem productivity even without weeding throughout the crop cycle.

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Avaliação De Cultivares De Cana-De-Açúcar Em Santa Maria-Rs

Cited by 2 publications

References 1 publication

Produtividade de colmos em clones de cana-de-açúcar

Produtividade de colmos em clones de cana-de-açúcar

Sorghum Hybrid CVSW 81198 and Its Weed Community in Periods With and Without Weeding

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