Estimating the risk associated with drying-off strategies for irrigated sugarcane before harvest

Robertson, M. J.; Muchow, R.C.; Donaldson, R. A.; Inman-Bamber, N. G.; Wood, A. W.

doi:10.1071/a98051

Cited by 41 publications

(33 citation statements)

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“…The maximum LAI values observed in this study were higher than that observed in sugarcane plants (4.92) by Robertson et al (1999), and those obtained under full irrigation at 152 DAP (6.82), and without irrigation at 147 DAP (6.80) by Farias et al (2008). Additionally, Oliveira et al (2004) reported a maximum of 4.8 and 5.8 for varieties RB72454 and RB855113, respectively, at 377 DAP, and 4.5 at 323 DAP for the variety RB855536.…”

Section: Resultscontrasting

confidence: 47%

Growth and Productivity of Sugarcane Varieties Under Various Irrigation Levels

Costa

Saad

Júnior³

2016

Rev. Caatinga

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-This study evaluated the growth and agro-industrial productivity of sugarcane varieties subjected to different irrigation levels in the county of Penápolis -São Paulo, Brazil. The experimental design was a randomized block with a factorial arrangement of 2 × 7 (two cultivars of sugarcane: RB965902 and RB855453, at seven irrigation levels: L0 = 0%, L1 = 25%, L2 = 50%, L3 = 75%, L4 = 100%, L5 = 125%, and L6 = 150% of crop evapotranspiration -ETc) with four replicates. The irrigation system was a subsurface drip at a flow rate of 1.4 L h -1 . The variables evaluated were tillering, culm length, leaf area index (LAI), dry matter, and industrial productivity. The maximum number of plants per linear meter was 30 for variety RB965902 at 100% ETc, and 29 for variety RB855453 at 125% of ETc. Maximum tillering occurred at 120 and 150 days after planting (DAP) for RB965902 and RB855453, respectively. The maximum LAI of BR965902 was 9.57 at 210 DAP and 9.81 at 201 DAP for the RB855453 variety. CRESCIMENTO E PRODUTIVIDADE DE VERIEDADES DE CANA-DE-AÇÚCAR SOB DIFERENTES LÂMINAS DE IRRIGAÇÃORESUMO -O objetivo deste estudo foi avaliar o crescimento e a produtividade agroindustrial de variedades de cana-planta submetidas a lâminas de irrigação no município dePenápolis -SP. O delineamento experimental foi em blocos casualizados com arranjo fatorial de 2 x 7 (duas variedades de cana-de-açúcar: RB965902 e RB855453 e sete lâminas de irrigação: L 0 = 0%, L 1 = 25%, L 2 = 50%, L 3 = 75%, L 4 = 100, L 5 = 125% e L 6 = 150% da evapotranspiração da cultura -ETc) e quatro repetições. O sistema de irrigação foi gotejamento subsuperficial com emissores de 1,40 L h -1. As variáveis avaliadas foram: perfilhamento, altura de plantas, índice de área foliar (IAF) e produtividade agroindustrial. O número máximo de plantas por metro linear foi 30 para variedade RB965902 com 100% e 29 para a RB855453 com 125% da ETc. O perfilhamento máximo ocorreu aos 120 e 150 dias após o plantio (DAP) na RB965902 e RB855453, respectivamente. O IAF máximo da RB965902 foi 9,57 aos 210 DAP e 9,81 aos 240 DAP para a RB855453.

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Section: Resultscontrasting

confidence: 47%

Growth and Productivity of Sugarcane Varieties Under Various Irrigation Levels

Costa

Saad

Júnior³

2016

Rev. Caatinga

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“…In South Africa, Robertson and Donaldson (1998) reported that the practice of drying-off before harvest increased sucrose content by 18%. Furthermore, Robertson et al (1999) analyzed 37 drying-off experiments during 1965 and 1995. Out of 83 experiments on the drying-off treatments analyzed, 19 experiments increased sucrose yield between 0.5 and 2.5 t ha 71 .…”

Section: Discussionmentioning

confidence: 99%

Management of drip irrigated sugarcane in western India

Singandhupe¹,

Bankar²,

Anand³

et al. 2008

Archives of Agronomy and Soil Science

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The present study on drip irrigation in sugarcane was undertaken to assess crop yield, quality of juice, nutrient uptake and its utilization efficiency, irrigation water use efficiency, and soil moisture status for two crop years at the Research Farm of Water Management, Mahatma Phule Krishi Vidhyapeeth, Rahuri, Maharashtra (long. 19845 0 to 19857 0 north; lat. 74818 0 to 74865 0 east), India. Drip irrigation at 2-, 3-, and 4-day intervals produced 20, 16 and 13% higher cane yield than furrow irrigation at 75 mm cumulative pan evaporation (CPE) in which the cane yield was 131.4 t ha 71 . During the crop growth period, soil moisture depletion was 34-46% in furrow-irrigated treatment and 5-20% in drip-irrigated treatment. Similarly, 108% higher irrigation water use efficiency was achieved in 2-day drip irrigation over furrow irrigation in which the irrigation water efficiency was 787 kg ha 71 cm. Fertilization through drip improved agronomic efficiency, physiological efficiency, and apparent recovery considerably more than furrow irrigation.

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“…Robertson et al (1999) showed that SC on a fresh mass basis remained higher in dry-down treatments than fully irrigated treatments, even when the cane yield in the dry-down treatments had been reduced by as much as 50% by water stress. Conversely, misunderstanding of the ripening response could lead to losses in sucrose yield.…”

Section: Water Stressmentioning

confidence: 96%

Sugarcane Yields and Yield‐Limiting Processes

Inman-Bamber

2013

Sugarcane: Physiology, Biochemistry, and Functional Biology

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A synopsis of yield-building and yield-limiting processes of sugarcane is timely given the difficulty facing many sugarcane industries in improving cane yields and sucrose % cane. Average cane yields in some countries appear to be approaching a ceiling of about 90 t ha −1 and sucrose content (SC) has been static in many countries for 20 years or more.Biomass and sucrose yields accumulate with the development of the leaf canopy, which progressively intercepts increasing amounts of radiation that is used in photosynthesis to produce sucrose, which, in turn, is then translocated to various sinks in the plant. The sugarcane canopy develops slowly compared to annual crops such as maize and sorghum. Delayed sugarcane canopy development is due to a slow rate of leaf production and a slow rate of tillering. The daily mean temperature below which leaves stop elongating and emerging is about 10 • C, whereas tillering ceases at a higher temperature of about 16 • C. Both tillering and leaf extension respond proportionally to temperatures above these lower limits.Cell enlargement and leaf and culm expansion are highly dependent on plant water relations. Culm elongation is more sensitive to water stress than is leaf elongation. Combined leaf and culm extension can slow when leaf water potential ( L ) declines below -0.2 MPa and can cease when L declines below -1.0 MPa. The leaf and culm extension rate of clones with a high SC are more restricted by the imposition of water stress and reduced temperatures than are clones with low SC. Differences among clones in sensitivity to abiotic environmental stresses may account to some extent for the differences in the concentration of sucrose among clones, because decreased cell expansion would require less of the photoassimilate for cell wall synthesis and thus allow a higher fraction of the photoassimilate to accumulate as sucrose in the culm.Despite its slow rate of canopy development, the long crop cycle of sugarcane makes it highly efficient in intercepting annual radiation compared to other crops. Rates of photosynthesis per unit leaf area for individual leaves are greater for sugarcane than for Zea and Sorghum spp. Maximum photosynthesis of single leaves is reportedly in the 30-50 mol m −2 s −1 range, whereas photosynthesis of whole plants is considerably lower than this rate.Radiation-use efficiency can be as high as 2 g MJ −1 but the average in experimental plots is only about 1.44 g MJ −1 because of a developmental slowdown, now called the reduced growth phenomenon (RGP), which appears to start after 30 to 50 t biomass ha −1 has accumulated. Factors including lodging, feedback on photosynthesis by sucrose accumulating in the culm, and respiration of sucrose could be responsible for the RGP.The high efficiencies of radiation capture and use in sugarcane are not matched by high Sugarcane: Physiology, Biochemistry, and Functional Biology, First Edition.

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Estimating the risk associated with drying-off strategies for irrigated sugarcane before harvest

Cited by 41 publications

References 1 publication

Growth and Productivity of Sugarcane Varieties Under Various Irrigation Levels

Growth and Productivity of Sugarcane Varieties Under Various Irrigation Levels

Management of drip irrigated sugarcane in western India

Sugarcane Yields and Yield‐Limiting Processes

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