Influence of Nitrogen Levels and Times of Application on Growth Parameters of Aerobic Rice

Anil, K. S.; Yakadri, M.; Jayasree, G.

doi:10.20546/ijcmas.2018.705.179

Cited by 11 publications

(9 citation statements)

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“…This finding is in line with Anil et al (2014) who indicate that N fertilisation and proper timing is crucial for good quality of rice crop. In improving agricultural production, N plays a vital role in supplying nutrients to the rice plant despite of losses due to late absorption or excessive application (Liu et al, 2014).…”

Section: Effect Of N Fertiliser On Aerobic Ricesupporting

confidence: 91%

“…Nori et al (2008) has used five nitrogen rates (0, 120, 160, 200 and 240 kg N ha -1 ) and found that the rice growth performance is increasing with the increment in application rate. The nitrogen application (0, 120, 180 and 240 kg ha -1 ) in rice cultivation field has shown that application starting from 180 kg ha -1 found to increase the quality and yield of rice plant, where the plant height and overall performance is better (Anil et al, 2014). However, over dosage of different N fertilizer sources and improper timing may lead to the injury of rice seedlings due to different composition or percentage of constituents.…”

Section: Introductionmentioning

confidence: 99%

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Effect of N fertilizer on the emergence and seedling growth of Eleusine indica in aerobic rice systems

Selvarajh¹,

Zain²,

Seng³

2017

Plant Omics

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Weed has become one of the most serious problems in aerobic rice systems. Weed management in aerobic rice system needs a manipulation of optimum N fertilizer application to control the weed and simultaneously enhance aerobic rice growth performance. In this study, three types of N sources (urea, ammonium sulphate and ammonium nitrate) with concentration starting from (0, 60, 120, 180 and 240 kg ha -1 ) were evaluated for effective control of the bioassay species, Eleusine indica, while observing the rice injury level. The data on weed (emergence and shoot fresh weight), while rice growth (root length, shoot fresh weight, shoot height and leaf greenness) was collected in this study. It was found that urea at a higher application rate of 240 kg ha -1 strongly inhibit the emergence and shoot growth of E. indica by >78%. Conversely, ammonium sulphate and ammonium nitrate gave moderate inhibition (58-65% inhibition) on weed emergence and shoot growth at higher application rates of 240 kg ha -1 , respectively. Significant stimulation effect on rice root growth, shoot height, shoot fresh weight and leaf greenness was noticed at a low application rate of 60 kg ha -1 urea, while ammonium sulphate and ammonium nitrate only exerts its stimulation effect starting at 120 kg ha -1 . Stimulation effect on the rice growth was likely negligible at 0 and 4 DAS across urea, ammonium sulphate and ammonium nitrate application rates. However, the rice plants growth increases with increasing growth stage. The finding suggest that application of urea at 240 kg ha -1 starting from 8 DAS of rice growth stage was the most efficient application rate in inhibiting E. indica with the stimulation effect on the growth of rice seedlings.

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Section: Effect Of N Fertiliser On Aerobic Ricesupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Effect of N fertilizer on the emergence and seedling growth of Eleusine indica in aerobic rice systems

Selvarajh¹,

Zain²,

Seng³

2017

Plant Omics

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“…But none of them specifically claimed them as adequate phenotypic parameters for NUE, nor evaluated them in comparison with all other physiological parameters. Our comprehensive physiological evaluation of 25 parameters, more than any other study so far ( Devi and Sumathi, 2011 ; Selassie, 2015 ; Anil et al, 2018 ; Rao et al, 2018 ), identified 20 of them as significantly N-responsive including root growth, plant height and biomass cited above for further shortlisting and delineation of the NUE phenotype ( Table 2 ).…”

Section: Discussionmentioning

confidence: 98%

Nitrogen Use Efficiency Phenotype and Associated Genes: Roles of Germination, Flowering, Root/Shoot Length and Biomass

et al. 2021

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Crop improvement for Nitrogen Use Efficiency (NUE) requires a well-defined phenotype and genotype, especially for different N-forms. As N-supply enhances growth, we comprehensively evaluated 25 commonly measured phenotypic parameters for N response using 4 N treatments in six indica rice genotypes. For this, 32 replicate potted plants were grown in the green-house on nutrient-depleted sand. They were fertilized to saturation with media containing either nitrate or urea as the sole N source at normal (15 mM N) or low level (1.5 mM N). The variation in N-response among genotypes differed by N form/dose and increased developmentally from vegetative to reproductive parameters. This indicates survival adaptation by reinforcing variation in every generation. Principal component analysis segregated vegetative parameters from reproduction and germination. Analysis of variance revealed that relative to low level, normal N facilitated germination, flowering and vegetative growth but limited yield and NUE. Network analysis for the most connected parameters, their correlation with yield and NUE, ranking by Feature selection and validation by Partial least square discriminant analysis enabled shortlisting of eight parameters for NUE phenotype. It constitutes germination and flowering, shoot/root length and biomass parameters, six of which were common to nitrate and urea. Field-validation confirmed the NUE differences between two genotypes chosen phenotypically. The correspondence between multiple approaches in shortlisting parameters for NUE makes it a novel and robust phenotyping methodology of relevance to other plants, nutrients or other complex traits. Thirty-Four N-responsive genes associated with the phenotype have also been identified for genotypic characterization of NUE.

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“…This might be due to increased levels of N application in splits that synchronized with the nutritional demand of rice at all the stages and thus resulted in higher production of leaves and leaf area. This was supported by Sathiya and Ramesh (2009), Kumar et al, (2013) and Anil et al, (2014).…”

Section: Leaf Areamentioning

confidence: 53%

Physiological Growth Parameters of Rabi Rice (Oryza sativa L.) under Alternate Wetting and Drying Irrigation with Varied Nitrogen Levels

Sridhar¹,

Srinivas²,

Kumar³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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A field experiment was conducted during rabi 2016-17 and 2017-18 at Agricultural Research Institute Main Farm, Rajendranagar, Hyderabad, on a clay loam soil to study the effect of alternate wetting and drying irrigation on rabi rice under varied nitrogen levels. The experiment consisted of three irrigation regimes (recommended submergence of 2 to 5 cm water level as per crop growth stage, AWD irrigation of 5 cm when water level drops to 3cm in water tube, AWD irrigation of 5cm when water level drops to 5 cm in water tube) as main plot treatments and three nitrogen levels (120, 160 and 200 kg N ha -1 ) as sub plot treatments laid out in split plot design with three replications. Significant improvement in the physiological growth parameters was observed with recommended submergence of 2 to 5 cm water level as per crop growth stage which was on par with AWD irrigation of 5 cm when water level drops to 3cm in water tube. Among nitrogen levels, application of 200 kg N ha -1 resulted in higher physiological growth parameters of Rabi Rice which was on par with application of 160 kg N ha -1 .

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Influence of Nitrogen Levels and Times of Application on Growth Parameters of Aerobic Rice

Cited by 11 publications

References 0 publications

Effect of N fertilizer on the emergence and seedling growth of Eleusine indica in aerobic rice systems

Effect of N fertilizer on the emergence and seedling growth of Eleusine indica in aerobic rice systems

Nitrogen Use Efficiency Phenotype and Associated Genes: Roles of Germination, Flowering, Root/Shoot Length and Biomass

Physiological Growth Parameters of Rabi Rice (Oryza sativa L.) under Alternate Wetting and Drying Irrigation with Varied Nitrogen Levels

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