Adjustment of water-crop production models for ratoon sugarcane

Souza, Jorge Luiz Moretti de; Gerstemberger, Emerson; Gurski, Bruno César; Oliveira, Ricardo Augusto de

doi:10.1590/1983-40632015v4537687

Cited by 7 publications

(4 citation statements)

References 16 publications

(15 reference statements)

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“…In a study on sugar cane in Brazil, the λ coefficient was calculated for germination to tillering, development and growth reduction (sucrose accumulation). The λ coefficient at the growth stage mentioned was estimated to be 0.43, 0.39 and 0.07, respectively (Souza et al, 2015). The results of the study mentioned showed that sugar cane sensitivity in the germination to the tillering stage was greater than that in other growth stages.…”

Section: Resultsmentioning

confidence: 99%

“…The mentioned models provide good estimations of crop yield, and they optimize irrigation water management during the growing season (Chen et al, 2014). Water stress sensitivity coefficients in the Jensen model were estimated for maize growth stages in Belgium (Kipkorir & Raes, 2002), sorghum in the United States (Jensen, 1968) and sugar cane in Brazil (Souza et al, 2015).…”

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confidence: 99%

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Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Saeidi

Sotoodehnia

Etedali

2022

Irrigation and Drainage

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Understanding the intraseasonal sensitivity of crop evapotranspiration (ET) to stresses allows for accurate modelling of crop yield. In this research, the effects of water salinity stress and soil nitrogen deficiency on evapotranspiration (in the growth stages) and maize yield in 2017 and 2018 were investigated.Four treatments of saline water levels of 0.5 (S 0 ), 2.1 (S 1 ), 3.5 (S 2 ) and 5.7 (S 3 ) dS m À1 were combined with four nitrogen fertilization levels of 100% (N 0 ), 75% (N 1 ), 50% (N 2 ) and 25% (N 3 ). The maize ET amounts from the S 0 N 0 to S 3 N 3 treatments decreased from 80 to 55 mm (in the initial stage), 202 to 129 mm (in development), 127 to 80 mm (in the mid) and 14.5 to 10.5 mm (in the late). The dry biomass yield of maize from the S 0 N 0 to S 3 N 3 treatments was equal to 15.3 to 9.23 t.ha À1 . The relative yield of maize was modelled by the additive models of Blank, Stewart and Singh and the multipliable models of Jensen, Rao and Minhas. The results showed that the Stewart and Jensen models were selected as the optimal models. By using the optimal models, the relative yield of maize can be modelled based on the evapotranspiration rate (in the growth stages) under salinity stress and nitrogen deficiency.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Saeidi

Sotoodehnia

Etedali

2022

Irrigation and Drainage

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“…Doorenbos and Kassam (1994), in which all water, nutritional and phytosanitary needs are addressed. The potential productivity penalization as a function of water deficit was performed using Jensen equation (Jensen, 1968;Souza et al, 2013;Souza et al, 2015):…”

Section: Methodsmentioning

confidence: 99%

Yield components and crop estimation for wheat cultivars at different sowing times

et al. 2020

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The objective of this study was to evaluate the yield and yield components of wheat cultivars, and compare the productivity obtained in the field and estimated with Jensen model, at different sowing dates, in Cascavel and Palotina cities, Parana state, Brazil. The experiments were carried out in the field at the COODETEC Research Center, located in Cascavel and Palotina. The experiment was conducted in a randomized blocks design in a 7 × 3 factorial, with plots consisting of six lines spaced at 5 × 0.17 meters, with seven wheat cultivars and three sowing dates, with three repetitions. The pluvial precipitation higher than crop evapotranspiration in all cultivation cycles analyzed did not prevent water deficiencies, which occurred predominantly in the heading and physiological maturation stages. The smallest water deficiencies in Cascavel (31.2 mm; April 22) and Palotina (7.2 mm; March 31), from sowing to heading, reduced grain yield by 41.7% and 42.8%, respectively, in relation to the higher productivity of each location. Small differences in yield components (NEM, NGE and MMG) provide differences in grain yield between the cultivars tested. The sowing carried out at the end of April and in May tended to have a higher yield. The best performances with Jensen model to estimate wheat grains yield were obtained for CD 1440 and QUARTZO cultivars. The Jensen model overestimated the grain yield of the CD 108, CD 1104, CD 150 and CD 154 cultivars, since the model do not consider losses due to excessive rainfall and/or pests and diseases.

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“…During the midseason stage (growth in height), accumulated ETc was 796.6 mm or 63.19%, then turn to 245.3 mm or 19.46% at the late stage. The midseason stage of sugarcane plantation in Southeast Brazil accumulated 70% of the total ETc [29]. The midseason stage or the elongation stage of sugarcane from Nov I to Apr III consumed much water (fast crop development).…”

Section: Introductionmentioning

confidence: 99%

Water use efficiency of sugarcane clones under rainfed condition

Riajaya¹,

Kadarwati²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Crop water use study is necessary for crop management. The purpose of the research was to determine water use efficiency (WUE) of sugarcane clones under rainfed conditions. A field trial was carried out in rainfed at Kediri, East Java, from August 2018 to June 2020 in two seasons of plant cane (PC) and first ratoon cane (RC1). A Split-Plot Design was used for the field trial with three replications. Three planting arrangements were allocated to the main plot. Sub-plots consisted of five clones and one check variety. The WUE is the ratio of sugarcane yield to total crop evapotranspiration. Crop evapotranspiration was the reference evapotranspiration multiply by crop coefficients. Reference evapotranspiration needs meteorological data and relied on the FAO Penman-Monteith method. The average sugarcane crop evapotranspiration for two seasons was 1260.9 mm/year in PC and RC1, with effective rainfall of 817.6 mm and 797 mm, respectively. Average water use efficiency to produce sugarcane were 11.47 and 10.85 t/100 mm and sugar 1.085 and 0.884 t/100 mm, respectively, in PC and RC1. The WUE benefit as criteria for crop selection and to calculate the potential yield given the available water.

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Adjustment of water-crop production models for ratoon sugarcane

Cited by 7 publications

References 16 publications

Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Yield components and crop estimation for wheat cultivars at different sowing times

Water use efficiency of sugarcane clones under rainfed condition

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