Risk of water surplus in soybean crop on haplic planosol soil in the Central Depression of Rio Grande do Sul State, Brazil

Bortoluzzi, Mateus Possebon; Heldwein, Arno Bernardo; Trentin, Roberto; Lucas, Dionéia Daiane Pitol; Righi, Evandro Zanini; Leonardi, Mateus

doi:10.1590/0103-8478cr20160170

Cited by 8 publications

(15 citation statements)

References 11 publications

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“…Excess water is one of the main risk factors for soybean grown in lowland areas (Bortoluzzi et al, 2017;Gubiani et al, 2018). The assessment of excess water can be performed by measuring the soil water content or aeration condition.…”

Section: Introductionmentioning

confidence: 99%

“…However, prediction of risks due to excess water requires modeling the water balance throughout the crop cycle. Bortoluzzi et al (2017) carried out a risk analysis of excess water for soybean cultivation in lowlands in the central region of Rio Grande do Sul (RS) by adapting the calculation of the daily sequential water balance (SWB) of Thornthwaite and Mather (1955). The authors also considered the effective precipitation (EP) of the U.S.…”

Section: Introductionmentioning

confidence: 99%

“…One of the improvements required in the SWB carried out by Bortoluzzi et al (2017) is the adjustment of the effective root depth. The authors considered that the roots explored a 0-400 mm layer, based on the effective depth used in the SWB calculation performed by Fietz and Rangel (2008) for soybeans grown in well-drained soils (Latosol or Rhodic Hapludox).…”

Section: Introductionmentioning

confidence: 99%

“…Soil Conservation Service tends to underestimate infiltration and overestimate the runoff in these areas. Therefore, calculation adjustments for infiltration and runoff in the SWB carried out by Bortoluzzi et al (2017) are also required to improve the model for predicting the risk of water excess for lowland soybeans.…”

Section: Introductionmentioning

confidence: 99%

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Water balance for determination of excess water in soybean cultivated in lowland soils

et al. 2021

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The aim of this study was to derive a methodology for calculating a sequential water balance that accurately estimates the occurrence of excess water in soybeans cultivated in lowlands. We tested four calculation strategies of water balance associated with the simulation of soybean development, which differed on the calculation of rainfall and time of water drainage from the soil macropores. Data of volumetric moisture monitored in three soil layers throughout the soybean cycle in the 2014/15 agricultural year were used as a reference. Microporosity was used as a lower limit for the occurrence of excess water in the area. Excess water was considered to be whenever the daily volumetric soil moisture in the 0-100 mm layer was greater than 0.39 mm3 mm-3. Over the 111 days of measurement, soil moisture indicated the presence of excess water in 38 days. The traditional calculation strategy of water balance underestimated the occurrence of excess water, as well as the other strategies that considered effective precipitation in their formulas. The calculation strategy that considers that all the rainfall infiltrates in the soil and that the water from macropores is removed only by crop evapotranspiration exhibited good performance and indicated 35 days of excess water, being the most appropriate and recommended for determining excess water in lowland soybeans.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Water balance for determination of excess water in soybean cultivated in lowland soils

et al. 2021

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“…According to Missio et al (2010), the monoculture of irrigated rice has predominated in these areas due to soil inhospitality for species not adapted to flooded environments. Nevertheless, according to Bortoluzzi et al (2017), there is currently an expansion of soybean cultivation in these areas mainly due to the possibility of controlling the red rice through crop rotation. Similarly, Thomas & Lange (2014) stated that soybean cultivation has presented a high growth in lowland areas due to two factors: the use of rice and soybean rotation as a tool for weed control and high remuneration that farmers have received for this oilseed.…”

Section: Introductionmentioning

confidence: 99%

Influence of Drainage Methods on Soybean Development in Lowlands

et al. 2020

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The need for crop rotation and profitability in lowland areas are the two main reasons for the introduction of soybean cultivation in the state of Rio Grande do Sul, Brazil. These areas have poor natural drainage, which impedes proper soybean growth. In this sense, this study aimed to assess the efficiency of using broad base ridges in comparison to the surface drainage for soybean cultivation in lowlands. The study was conducted during the 2014/2015 and 2015/2016 growing seasons in São João do Polêsine, RS, Brazil. The assessed drainage methods were the use of broad base ridges with different width dimensions (22.5, 15.0, and 7.5 m) and surface drainage. The results showed that the shoot dry matter and leaf area index have similar behavior. The broad base ridge was better than the surface drainage method for these variables. The 7.5-m broad base ridge stood out among the treatments when compared to the others, as it had the best results for the leaf area index (8.66), plant height (102.5 cm), and shoot dry matter (33.06 g).

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Risk of Occurrence of Water Deficit in Soybean Cultivated in Lowland Soils

et al. 2020

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The occurrence of water deficit is intensified in lowland soils. Generating information regarding its risk of occurrence is essential to avoid seed yield losses. The objective of this study was to determine the probability of water deficit in soybean cultivated in lowlands of the Vacacaí and Piratini river basins in the southern portion of Rio Grande do Sul as a function of the sowing date. Soybean development was simulated considering three sets of cultivars of relative maturity groups (RMG) delimited by 5.9-6.8, 6.9-7.3 and 7.4-8.0, with ten-days interval between the sowing dates comprised between September 21 and December 31. Daily meteorological data were used from 1971 to 2017 obtained from the Pelotas meteorological station and from 1968 to 2017 from the Santa Maria meteorological station. Water deficit (mm) in the subperiods and soybean development cycle was obtained from the calculation of evapotranspiration and daily sequential crop water balance. Data of water deficit were subjected to the probability distribution analysis, in which the exponential, gamma, lognormal, normal and weibull probability density function (pdf) adjustments were tested using Chi-square and Kolmogorov-Smirnov adhesion tests, with a 10% significance level. The water deficit is lower in the Pelotas region than in Santa Maria. Sowings performed from November 11 and November 1st present the lowest risk of occurrence of water deficit throughout the soybean cycle respectively in Santa Maria and Pelotas. Risk of water deficit decreases for the R1-R5 subperiod when soybean sowing occurs from the beginning of November.

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Risk of water surplus in soybean crop on haplic planosol soil in the Central Depression of Rio Grande do Sul State, Brazil

Cited by 8 publications

References 11 publications

Water balance for determination of excess water in soybean cultivated in lowland soils

Water balance for determination of excess water in soybean cultivated in lowland soils

Influence of Drainage Methods on Soybean Development in Lowlands

Risk of Occurrence of Water Deficit in Soybean Cultivated in Lowland Soils

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