Crescimento da cana-de-açúcar com e sem irrigação complementar sob diferentes níveis de adubação de cobertura nitrogenada e potássica

Silva, Charles Teles Santos da; Azevedo, Hamilton Medeiros de; Alberto, Carlos; Azevedo, Vieira de; Neto, José Dantas; Carvalho, Clayton Moura de

doi:10.7127/rbai.v3n100012

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Souza et al (2015) found a significant effect of irrigation on plants' growth in height and on culm phytomass of sugarcane (variety SP 79-1011). Silva et al (2009) found in this variety that the sugarcane growth parameters values, related to the number of culms, culm length, culm diameter, number of internodes and culm weight, responded significantly to irrigation.…”

Section: Resultsmentioning

confidence: 72%

Agronomic performance and industrial yield of sugarcane under water-saving irrigation in cerrado soil

Cunha¹,

Silva²,

Teixeira³

et al. 2016

Afr. J. Agric. Res.

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The objective of this study was to evaluate the growth and gross yield of sugar and ethanol of first-year sugarcane with water-saving irrigation via hose-drawn traveller using a line of sprinklers. The experimental design was randomized blocks, analyzed in a split plot scheme with four replications. The factors evaluated in the plots consisted of five levels water-saving irrigation applied after planting (0, 30, 45, 60 and 75 mm). The subplots were represented by four evaluation periods (90, 170, 250 and 330 days after planting-DAP). The sugar yield and gross alcohol yield were evaluated punctually at the end of the cycle to 330 DAP. In the central lines of the subplots, the morphological characteristics relative to plant height, culm diameter, internodes length, number of sugarcane plants, number of leaves, leaf area, leaf length and leaf width, were evaluated. The gross yields of sugar and alcohol were calculated using the raw sugar value determined by technological analysis of the broth from a sample with 12 culms per experimental unit. Water-saving irrigation provides a positive effect on leaf length, leaf area, plant height and number of sugarcane plants. Water-saving irrigation of 75 mm definitely promotes an increase of 30% in gross sugar and alcohol yield.

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Section: Resultsmentioning

confidence: 72%

Agronomic performance and industrial yield of sugarcane under water-saving irrigation in cerrado soil

Cunha¹,

Silva²,

Teixeira³

et al. 2016

Afr. J. Agric. Res.

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“…According to Silva et al [2], for maximum yield, sugarcane needs adequate moisture, directly proportional to the transpired water, throughout its vegetal growth. Thus, irrigation becomes indispensable for greater productivity.…”

Section: Introductionmentioning

confidence: 99%

Productivity and Dry Matter Accumulation of Sugarcane Crop under Irrigation and Nitrogen Application at Rio Verde GO, Brazil

Bastos¹,

Oliveira²,

Silva³

et al. 2015

AJPS

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Dry matter production and productivity of stem currently are being widely studied in sugarcane, reinforcing the study in question, which aims to assess the accumulation of dry matter of the aerial segment and the productivity of stems of sugarcane crops within the first cycle, at different levels of water replacement (WR) with and without nitrogen fertilization, through a subsurface drip irrigation system. The assay was conducted in the experimental area of the Federal Institut Goiano, Campus Rio Verde, GO, Brazil, in a dystroferric Rhodic Hapludox soil, cerrado phase (savannah), and comprised experimental splits of three furrows with an 8-meter long double row. Experimental design consisted of randomized blocks in a 5 × 2 factorial array, with four replications. Evaluated factors comprised five levels of WR (100%, 75%, 50%, 25% and 0% of field capacity), with and without the application of nitrogen (0 and 100 kg•ha −1 urea). Harvest occurred in May 2013 and stem productivity (SP), productivity of pointers (PP), productivity of straw (PS), harvest index (HI), dry matter of stem (DMS), dry matter of pointers (DMP), the relationship between dry matter of pointer and dry matter of stem (DMP/DMS) and total dry matter of the aerial segment (TDM) were determined. The variables SP, PP, DMS and DMP had a linear growth in proportion to WR increase, whereas HI and DMP/DMS adjusted to a quadratic model. Nitrogen fertilization affected positively the variables SP, HI, DMS and DMP/DMS and occurred interaction to TDM; also increasing the productivity stem and the harvest index.

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Weather variables, water balance, growth, and agro industrial yield of sugarcane

et al. 2015

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ABSTRACT:The objective of this study was to evaluate the meteorological variables, water deficiency, growth, and agro-industrial yield of sugarcane varieties: RB72454, RB863129, RB867515, RB92579, RB93509, RB931003, RB951541, and RB971755, in rainfed crop in two harvests in the Rio Largo-AL region. The meteorological variables were obtained in an automatic station and water balance was done by Thornthwaite & Mather method. During the study period, the air temperature ranged from 16.6 to 35.9 ºC. In the first production cycle rained 1,806 mm and the crop evapotranspiration was 1,775 mm. In the second cycle, the rainfall totaled 1,632 mm and the crop evapotranspiration was 1,290 mm. The average water excess of two production cycles was 689 mm and the water deficit totaled 665 mm. The average agricultural productivity in the plant was 86.8 t ha -1 , in the first ratoon was 75.2 t ha -1 and the agro-industrial yield average was 12.9 and 10.9 tons of sugar per hectare in the plant and first ratoon, respectively. The air temperature was not limiting to the growth of sugarcane and the rainfall was higher than the crop evapotranspiration, but due to poor distribution of the rains there was water deficit. The most productive varieties were RB93509, RB92579, and RB863129. No período da pesquisa, a temperatura do ar variou de 16,6 a 35,9º C. No primeiro ciclo de produção, choveu 1.806 mm, e a cultura evapotranspirou 1.775 mm, e, no segundo ciclo, a precipitação pluvial somou 1.632 mm, e a evapotranspiração da cultura foi 1.290 mm. O excesso hídrico médio dos dois ciclos de produção foi 689 mm; e o déficit hídrico, 665 mm. Ou seja, mesmo resultando em uma precipitação pluvial superior à evapotranspiração da cultura, devido à má distribuição das chuvas, houve deficiência hídrica. A temperatura do ar não foi limitante para o crescimento da cana-de-açúcar. A produtividade agrícola média da cana-planta foi 86,8 t ha -1 , em cana-soca foi 75,2 t ha -1 , e o rendimento agroindustrial médio foi 12,9 e 10,9 toneladas de açúcar por hectare em cana-planta e cana-soca, respectivamente. As variedades mais produtivas foram a RB93509, a RB92579 e a RB863129. KEYWORDS PALAVRAS-CHAVE

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Crescimento da cana-de-açúcar com e sem irrigação complementar sob diferentes níveis de adubação de cobertura nitrogenada e potássica

Cited by 7 publications

References 3 publications

Agronomic performance and industrial yield of sugarcane under water-saving irrigation in cerrado soil

Agronomic performance and industrial yield of sugarcane under water-saving irrigation in cerrado soil

Productivity and Dry Matter Accumulation of Sugarcane Crop under Irrigation and Nitrogen Application at Rio Verde GO, Brazil

Weather variables, water balance, growth, and agro industrial yield of sugarcane

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