Assessing yield and economic impact of introducing soybean to the lowland rice system in southern Brazil

Ribas, Giovana Ghisleni; Zanon, Alencar Júnior; Streck, Nereu Augusto; Pilecco, Isabela Bulegon; Souza, Pablo Mazzuco de; Heinemann, A. B.; Grassini, Patricio

doi:10.1016/j.agsy.2020.103036

Cited by 26 publications

(20 citation statements)

References 38 publications

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“…For example, rice yield improvements of 24 to 46% were observed after mungbean [Vigna radiata (L.) R.Wilczek] in Vietnam. Similarly, Ribas et al (2021) found that including soybean in rotations increased rice yield by 26% compared with rice after rice in southern Brazil. Meanwhile, previous research in Uruguay indicated that rice after rice is lower-yielding than rice after pasture (Méndez, 1993).…”

Section: Introductionmentioning

confidence: 92%

“…Farmaha et al (2016) reported that both maize and soybean improved their grain yield when they alternated crops (maize-soy or soy-maize). In rice systems, Xuan et al (2012) found yield improvements of between 24 and 46% when rice alternated with mungbean, and improvement by 26% were found after soybean in southern Brazil (Ribas et al, 2021).…”

Section: Rice Grain Yieldsmentioning

confidence: 99%

“…Two options for increasing annual grain productivity in Uruguay involve substituting the pasture phase of the rotation with either soybean [Glycine max (L.) Merr.] or rice, both of which are likely to affect yields of the following rice crop (Ribas et al., 2021; Yadvinder‐Singh et al., 2008). Soybean production has continued to increase in Uruguay, following trends for much of South America in recent decades, with some farmers rotating soybean and rice in search of economic advantages (Oficina de Estadísticas Agropecuarias, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

et al. 2022

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Rice (Oryza sativa L.) systems rotated with perennial pastures have intensified in South America to increase annual grain productivity, but the effects on rice yield and soil quality remain poorly understood. We evaluated rice grain yield, crop and pasture biomass production, and soil organic carbon (SOC) and total nitrogen stocks (0-15-cm depth) in three rice-based rotations over 8 yr in Uruguay. Treatments were: (a) rice-pasture [a 5 yr rotation of rice-ryegrass (Lolium multiflorum Lam.)-rice, then 3.5 yr of a perennial mixture of tall fescue (Festuca arundinacea Schreb.), white clover (Trifolium repens L.), and birdsfoot trefoil (Lotus corniculatus L.)], (b) rice-soybean [a 2-yr rotation of rice-ryegrass-soybean (Glycine max [L.] Merr.)-Egyptian clover (Trifolium alexandrinum L.)], and (c) rice-cover crop (an annual rotation of rice-Egyptian clover). Rice after soybean or pasture achieved the highest yield (9.8 Mg ha -1 ), 9% higher than rice after rice in the rice-pasture and rice-cover crop systems. Estimated belowground biomass under rice-pasture (2.7 Mg ha -1 ) was 12 and 42% greater than under rice-cover crop and rice-soybean rotations, respectively. Rice-pasture showed an increase of 0.6 Mg ha -1 yr -1 of SOC; no changes were observed in the intensified rotations replacing pasture with additional rice or soybean. All systems sustained soil total N. These results provide insights for implementing sustainable rice-based rotations, with rice-pasture being the only system that increased SOC while achieving high rice yields and belowground biomass productivity.

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Section: Introductionmentioning

confidence: 92%

Section: Rice Grain Yieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

et al. 2022

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“…Soybean is an economically important oilseed crop providing the majority of plant oil and more than a quarter of protein for the world's food and animal feed (Liu et al 2020). In recent years, soybean has been widely used in crop rotation with rice in wetland areas (Nishida et al 2013;Stevens et al 2015;Samejima et al 2021;Ribas et al 2021). This technique assists in enriching the soil with nitrogen (N) and disrupting the pests and disease cycles associated with continuous rice cropping (Nishida et al 2013;Ribas et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, soybean has been widely used in crop rotation with rice in wetland areas (Nishida et al 2013;Stevens et al 2015;Samejima et al 2021;Ribas et al 2021). This technique assists in enriching the soil with nitrogen (N) and disrupting the pests and disease cycles associated with continuous rice cropping (Nishida et al 2013;Ribas et al 2021). However, growing soybean in soils prone to waterlogging, such as those suitable for rice planting, can be challenging.…”

Section: Introductionmentioning

confidence: 99%

Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

Delias

da-Silva

Martins

et al. 2021

Environ Sci Pollut Res

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Iron toxicity is a major challenge faced by plants in hypoxic soils; however, the consequences of such combined stress for soybean (Glycine max) remain to be determined. Here we assessed the physiological responses of soybean plants exposed to hypoxia and a high concentration of iron. Soil-grown plants cultivated in a greenhouse until the vegetative stage were transferred to a hydroponic system containing nutrient solution and subjected to two oxygen conditions (normoxia (6.2 mg L -1 ) and hypoxia (0.33 mg L -1 )) and two iron concentrations (Fe-EDTA) (0.09 and 1.8 mM) for 72 h. During hypoxia, high concentrations of iron in the nutrient solution resulted in increased iron accumulation in roots and leaves. Under this condition, the concentrations of zinc, nitrogen, potassium, and calcium decreased in the roots, while the concentration of nitrogen and magnesium decreased in the leaves. Additionally, during hypoxia, the higher concentration of iron led to an increase in the activity of the antioxidant enzymes in roots and leaves, while decreased the levels of the photosynthetic pigments, leaf gas exchange, and plant growth. In conclusion, high iron concentration in the root medium results in a considerably more severe damage condition to soybean plants under hypoxia compared to plants grown under low iron availability.

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Assessing factors related to yield gaps in flooded rice in southern Brazil

et al. 2021

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Identifying the causes of the yield gap (Yg) is essential to understand and take proactive measures to improve crop management factors. Brazil is the country in the Americas with the highest area of flooded rice (Oryza sativa L.) and the Rio Grande do Sul (RS) state accounts for 73% of the Brazilian rice production. The objective was to determine yield potential (Yp) and Yg in flooded rice and identify key factors associated with high yield (HY) and low yield (LY) farms across the rice production regions in RS, Brazil. Yield and management practices data from farmers were collected by a survey that included 324 site‐year observations fields covering the five major RS production regions during three growing seasons (2016–2018). The Yp was simulated by Oryza crop model. The Yg was calculated as the difference between Yp and the average yield from farmers. Factors related between tertiles were studied by identifying management practices that were associated with high‐ and low‐yielding fields. Rice Yp ranged from 14.2 to 15.9 Mg ha−1 and the Yg was 48% of the estimated average Yp (15.1 Mg ha–1). Our findings indicated that HY fields had 33% higher productivity, rotated more area with soybean [Glycine max (L.) Merr.] (77%), controlled pre‐sowing weeds by only herbicides (56%), sowed 20 d early with lower seeding rate (6%) and had early onset irrigation (5 d) compared to LY fields. These findings are applicable to rice farmers worldwide, and can help to define priorities in research and extension programs at both local and regional levels.

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Assessing yield and economic impact of introducing soybean to the lowland rice system in southern Brazil

Cited by 26 publications

References 38 publications

Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

Assessing factors related to yield gaps in flooded rice in southern Brazil

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