Urease inhibitor reduces ammonia volatilization and increases rice grain yield under irrigation delay

Carlos, Filipe Selau; Kunde, Roberta Jeske; Sousa, Rogério Oliveira de; Weinert, Cristiano; Ulguim, André da Rosa; Viero, Fernando; Rossi, Iuri; Buchain, Marina Patel; Boechat, Cácio Luiz; Camargo, Flávio Anastácio de Oliveira

doi:10.1007/s10705-022-10203-7

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…Nevertheless, irrigation (5-10 mm) after urea application moves the urea molecule down to the soil profile (approximately 20 mm below soil surface), which helps to reduce the NH 4 + concentration in surface soil (0-20 mm) and thereby NH 3 emissions. Moreover, high soil water content results in slow NH 3 diffusion and, consequently, minimal NH 3 emissions (Carlos et al 2022). Therefore, the combination of NI application with irrigation is likely to be an advantageous strategy to promote crop yield and fertilization efficiency.…”

Section: Effect Of Irrigationmentioning

confidence: 99%

Do tropical climatic conditions reduce the effectiveness of nitrification inhibitors? A meta-analysis of studies carried out in Brazil

Ribeiro

Carlos

Barth

et al. 2023

Nutr Cycl Agroecosyst

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Extensive research has been performed into the effectiveness of nitrification inhibitors (NIs) in preventing N losses; however, tropical agriculture has been underrepresented in recent meta-analyses. Here, we apply a meta-analytic approach using data from 50 articles to identify the impact of NIs (DMPP, DCD, and DCD + NBPT) on crop yield, N2O emissions, soil NH4+ and NO3− concentrations, and NH3 volatilization in subtropical and tropical regions of Brazil. In addition, the survey includes information about location; climate zone; cultivated crops; soil pH; soil organic carbon; soil texture; experimental method; soil management; irrigation; fertilizer source, rate, and type; and NI type and rate. Overall, the data set showed that NIs increased crop yield and soil NH4+ concentrations by 3 and 60%, respectively, whereas N2O emissions and soil NO3− concentrations were reduced by 62 and 31%, respectively. Ammonia volatilization was not changed by NI application. However, the combination of a NI with a urease inhibitor decreased such losses by 39%. The effectiveness of the NIs was highest in irrigated fields, fine-textured soils, and mineral N sources. Moreover, NI performance in Brazil was found to be similar in tropical and subtropical climates, and was also comparable to values previously reported in meta-analyses, including those conducted in temperate climates. Therefore, NI application is indicated to be an efficient strategy to delay nitrification and mitigate N2O emissions in tropical agroecosystems.

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Section: Effect Of Irrigationmentioning

confidence: 99%

Do tropical climatic conditions reduce the effectiveness of nitrification inhibitors? A meta-analysis of studies carried out in Brazil

Ribeiro

Carlos

Barth

et al. 2023

Nutr Cycl Agroecosyst

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“…Most of rice grown in Brazil takes place in the southernmost state of the country, which accounts for approximately 70% of national production (SOSBAI, 2018). The predominant production system is intensive (IRGA, 2021) with the incorporation of large amounts of external inputs, such as fertilizers, pesticides, mechanical implements and improved seeds (Carlos et al, 2021(Carlos et al, , 2022a. It is notable, however, that over the years this intensive monoculture-based system has losing profitability, although productivity has increased considerably in the last 20 years (Souza et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Soybean-rice rotation in southern Brazil: economics advantages

Quevedo,

Canever,

Jansen

et al. 2023

OLEL

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The aim of this paper is to show a step-by-step method and empirical data for evaluating the economic advantages of introducing soybean in rotation with irrigated rice in the Brazilian southern lowlands by comparing two groups of farms: (01) farms with rice’s monoculture; (02) farms with soybean and rice rotation in the last 5 years. As a result, we found that the introduction of soybeans in the irrigated rice production system reduces the costs of soil preparation (41.45%), weed control costs (49.60%) and exposure to risk (27,61%). Furthermore, through rotation farms might improve the results of commercialization by 0,66% in comparison with monocultural farms. On the other hand, the rotation system increases fertilization costs (13.34%), reduces the gains with cattle grazing in the fallow period (0,97%) and the gross revenue per unit of area (5.62%). In sum the rotation is a viable production strategy, generating an increase of 9,68% in the financial return as compared to the traditional rice’s monocultural agricultural system.

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“…According toMassey et al (2014), in experiments in the Mississippi region/USA, evaluated continuous irrigation with intermittent supply between the vegetative phenological phases V5 + 10 days and reproductive R3 (beginning of owering), not having observed a reduction in the grain yield of hybrids of rice in relation to continuous ood irrigation. In the intermediate and lower layers with a tendency towards higher N 2 O emission, in these layers it may be pertinent to manage nitrogen to mitigate losses in rice grain yield(Carlos et al, 2022a).…”

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confidence: 99%

New ridge–furrow irrigation system reduces methane emissions and partial global warming potential in rice cultivation

Timm,

Scivittaro,

Parfitt

et al. 2024

Preprint

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Flood irrigated rice, in addition to using large volumes of water, is one of the main causes (~30%) of methane (CH4) emissions from agriculture. New cultivation technologies in lowlands, such as ridge-furrow, enable the use of a smaller volume of water in rice cultivation compared to traditional flood irrigation and higher soil oxidation, which can impact the emission of CH4 and nitrous oxide (N2O). The expansion of the use of the ridge-furrow system in southern Brazil occurs because it has been one of the systems responsible for the expansion of alternative crops, such as soybean and corn in rotation with rice. The ridge-furrow promotes adequate drainage of the soil surface and irrigation of crops, minimizing damage from excess and deficit water in lowlands. Thus, the objective of the work was to evaluate the emission of CH4, N2O, partial global warming potential (pGWP) and rice grain yield in a ridge-furrow system in rotation with soybean. The trial was carried under field conditions at the Ricetec Experimental Station, in the 2020/21 and 2021/22 crop seasons in Capão do Leão, Southern Brazil, taking advantage of the infrastructure of ridge-furrow established for soybean in rotation in the previous season. Was used an XP117 RiceTec rice hybrid with a 130-day cycle. The treatments consisted of different portions of the furrow: upper (wet soil); intermediate (saturated soil) and bottom portion (flooded soil). Rice cultivation in the ridge-furrow system reduced CH4 emissions by 34% and partial global warming potential by 30%. Rice grain yield levels remained high in the ridge-furrow system. Thus, the ridge-furrow irrigation contributes to increasing the sustainability of rice production as it enables a significant reduction in CH4 emissions and a more efficient in the use of water.

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Urease inhibitor reduces ammonia volatilization and increases rice grain yield under irrigation delay

Cited by 10 publications

References 28 publications

Do tropical climatic conditions reduce the effectiveness of nitrification inhibitors? A meta-analysis of studies carried out in Brazil

Do tropical climatic conditions reduce the effectiveness of nitrification inhibitors? A meta-analysis of studies carried out in Brazil

Soybean-rice rotation in southern Brazil: economics advantages

New ridge–furrow irrigation system reduces methane emissions and partial global warming potential in rice cultivation

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