Influence of Blast on the Nutrition and Yield of Irrigated Rice in Southern Brazil

Ogoshi, Cláudio; Carlos, Filipe Selau; Waldow, Daniel Arthur Gaklik; Miranda, Fernando Fumagali; Reginato, Júlia Lima; Ulguim, André da Rosa

doi:10.1007/s42729-020-00219-9

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…(3) Our study found that the incidences of pathogens had negative correlations with the head rice rate and had positive correlations with the chalky rice rate and chalkiness degree (Figure S3). These results are consistent with a previous study which showed that lower pathogens in rice resulted in better grain quality (Figure 3) [50,51].…”

Section: Grain Quality and Economic Incomes Improvementsupporting

confidence: 93%

Intercropping of Rice and Water Mimosa (Neptunia oleracea Lour.): A Novel Model to Control Pests and Diseases and Improve Yield and Grain Quality while Reducing N Fertilizer Application

et al. 2021

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Cereal/legume intercropping is an effective agricultural practice for pest and disease control and crop production. However, global research on rice and aquatic legume intercropping is relatively rare. A field experiment during two seasons (2018 late season and 2019 early season) was conducted to explore the effects of rice and water mimosa intercropping on rice canopy microclimate, pest and disease, yield, grain quality, and economic income. Two cultivation patterns including rice/water mimosa intercropping and rice monocropping were employed, and three nitrogen (N) fertilizer application levels, including zero N (ZN, 0 kg ha−1 N), reduced N (RN, 140 kg ha−1 N), and conventional N (CN, 180 kg ha−1 N) levels, were applied for the above two cultivation patterns. The results showed that rice/water mimosa intercropping formed a canopy microclimate of rice with higher temperature and lower relative humidity and dew point temperature. In addition, there was a significant reduction in the occurrences of rice leaf blast by 15.05%~35.49%, leaf folders by 25.32%~43.40%, and sheath blight by 16.35%~41.91% in the intercropping treatments. Moreover, rice/water mimosa intercropping increased rice per unit yield by 43.00%~53.10% in the late season of 2018 and 21.40%~26.18% in the early season of 2019. Furthermore, rice grain quality was totally improved, among which brown and head rice rates increased but rice chalky rate and chalkiness degree decreased in the intercropping system. We suggest that combining rice/water mimosa intercropping and N fertilizer reduction can be used as an environmentally friendly eco-farming technique because it can decrease N fertilizer application by approximately 40 kg·ha−1. This combination would not only mitigate nonpoint source pollution but also obtain advantages for controlling rice pests and diseases that would alleviate pesticide usage and improve rice yield and grain quality, which can be extended for green rice production to increase income for producers.

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Section: Grain Quality and Economic Incomes Improvementsupporting

confidence: 93%

Intercropping of Rice and Water Mimosa (Neptunia oleracea Lour.): A Novel Model to Control Pests and Diseases and Improve Yield and Grain Quality while Reducing N Fertilizer Application

et al. 2021

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“…6B). Excess N application is associated with yield decline under some circumstances and a potential reduction in grain quality due to increased pest and disease pressure, lodging or induced soil acidity over time (Cassman and Harwood, 1995;Guo et al, 2010;Ogoshi et al, 2020). Increasing PFP-N in fields with medium-and short-duration varieties is possible (e.g., Fig.…”

Section: N Management and Sustainable Rice Productionmentioning

confidence: 99%

Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices

Nayak

Silva

Parihar

et al. 2022

Field Crops Research

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A large database of individual farmer field data (n = 4,107) for rice production in the Northwestern Indo-Gangetic Plains of India was used to decompose rice yield gaps and to investigate the scope to reduce nitrogen (N) inputs without compromising yields. Stochastic frontier analysis was used to disentangle efficiency and resource yield gaps, whereas data on rice yield potential in the region were retrieved from the Global Yield Gap Atlas to estimate the technology yield gap. Rice yield gaps were small (ca. 2.7 t ha − 1, or 20% of potential yield, Yp) and mostly attributed to the technology yield gap (ca. 1.8 t ha − 1, or ca. 15% of Yp). Efficiency and resource yield gaps were negligible (less than 5% of Yp in most districts). Small yield gaps were associated with high input use, particularly irrigation water and N, for which small yield responses were observed. N partial factor productivity (PFP-N) was 45-50 kg grain kg − 1 N for fields with efficient N management and approximately 20% lower for the fields with inefficient N management. Improving PFP-N appears to be best achieved through better matching of N rates to the variety types cultivated and by adjusting the amount of urea applied in the 3 rd split in correspondance with the amount of diammonium-phosphate applied earlier in the season. Future studies should assess the potential to reduce irrigation water without compromising rice yield and to broaden the assessment presented here to other indicators and at the cropping systems level.

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“…Moreover, the application of N fertilizer in splits at later growth stages provides an opportunity to maximize the N uptake and its effectiveness to enhance NUEs and yield (Liang et al 2017). However, when N fertilizer rate under the split application treatments was increased from 100 to 150 kg N ha −1 , NUE (NUE B , AgNUE, and ARE) started to decline due to increased N losses, possibly in the form of increased NH 3 volatilization and reduced 1000-grain weight (Ogoshi et al 2020). Higher NUE and higher grain yield under split application of N was attributed to the increased chlorophyll value of crop flag leaf that enhanced its photosynthetic rate, leaf area duration, and higher electron transport capability of PS I and PS II.…”

Section: Discussionmentioning

confidence: 99%

Influence of Nitrogen Fertilization Pattern on Productivity, Nitrogen Use Efficiencies, and Profitability in Different Rice Production Systems

Ishfaq

Akbar

Zulfiqar

et al. 2020

J Soil Sci Plant Nutr

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The major challenge in sustainable rice production is to achieve the goals of increasing crop productivity, profitability, and resource use efficiency. Production systems (PS) and nitrogen (N) management patterns are two key agronomic practices influencing crop performance, profitability, water use efficiency (WUE), and N use efficiency (NUE). So, this study was conducted to check the influence of split application of N on rice productivity, NUE and profitability under dry direct-seeded rice (DDSR) and transplanted rice (TPR) systems. A field study was conducted in the summer season of 2017 and 2018 to investigate the influence of two PS (dry direct-seeded rice = DDSR and transplanted rice = TPR) and six N management treatments (N 1 = control, N 2 = 50 kg N ha −1 as basal, N 3 = 100 kg N ha −1 as basal, N 4 = 150 kg N ha −1 as basal, N 5 = 100 kg N ha −1 in three splits and N 6 = 150 kg N ha −1 in three splits) on crop productivity, profitability, and resource use efficiency. Yield-related traits, spikelet sterility, WUE, and profitability aspects were significantly influenced by PS. All aspects of crop performance, kernel quality, N uptake, and NUE (except NUE on biomass basis = NUEB) were affected by N management pattern, while no significant interaction between PS and N management was observed for any aspect. On average, DDSR improved the productive tiller density (26%), biological yield (16%), WUE (14%), and NUEB (27%) as compared with TPR. Similarly, DDSR reduced the cost of production (31-43%), while maintaining statistically similar paddy yields and reducing total water inputs (5-17%) in comparison with TPR. Among N management pattern, 100 kg N ha −1 in three splits increased paddy yields (44%), and WUE (42%) as compared with the basal application of 100 kg N ha −1. Similarly, application of N at 100 kg ha −1 in three splits improved the total N uptake (42%), agronomic NUE (146%), apparent recovery efficiency (226%) while reducing the spikelet sterility (28%) as compared with the basal application of 100 kg N ha −1. The DDSR has the potential to maintain or increase yield, WUE, NUE, and economic returns. While, split application of N at 100 kg ha −1 either in DDSR or TPR not only increased the SPADchlorophyll value, WUE, NUE, and economic returns but also reduced the spikelet sterility.

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Influence of Blast on the Nutrition and Yield of Irrigated Rice in Southern Brazil

Cited by 7 publications

References 19 publications

Intercropping of Rice and Water Mimosa (Neptunia oleracea Lour.): A Novel Model to Control Pests and Diseases and Improve Yield and Grain Quality while Reducing N Fertilizer Application

Intercropping of Rice and Water Mimosa (Neptunia oleracea Lour.): A Novel Model to Control Pests and Diseases and Improve Yield and Grain Quality while Reducing N Fertilizer Application

Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices

Influence of Nitrogen Fertilization Pattern on Productivity, Nitrogen Use Efficiencies, and Profitability in Different Rice Production Systems

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