Fate of fertilizer nitrogen applied to wetland rice

Craswell, E. T.; Vlek, Paul L. G.

doi:10.1007/978-94-017-1662-8_10

Cited by 33 publications

(22 citation statements)

References 55 publications

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“…[31] also reported a N recovery efficiency of 37% in 20 lowland rice genotypes. The low N recovery efficiency in low land rice may be related to N losses from soil via nitrification-denitrification, NH 3 volatilization, or leaching [32].…”

Section: Nitrogen Use Efficiency (Nue)mentioning

confidence: 99%

Nitrogen Use Efficiency of Low Land Rice as Affected by Organic and Chemical Sources

Khatun¹,

Sultana²,

Bhuiya³

et al. 2015

OALib

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Given the increasing dairy and poultry industries, cowdung (CD) and poultry manure (PM) might become alternative sources of nitrogen (N) for rice production in South Asia. A field experiment was conducted during dry season (November-April) in Gazipur, Bangladesh. The experiment aimed to evaluate N use efficiency (NUE) in rice under varying sources of N application. Six treatments-1) N-control; 2) optimum dose of nitrogen (164 kg N ha −1 ) from urea; 3) 50% N from urea and 50% N from CD; 4) 50% N from urea and 50% N from PM; 5) 100% N from CD; and 6) 100% N from PMwere compared. Two mega varieties-BRRI dhan28 and BRRI dhan29-were used as test crops. In BRRI dhan28, the urea treatment had the highest agronomic use efficiency (AUE), utilization efficiency (UE) and partial factor productivity (PFP) followed by urea + PM treatment and absolute PM treatment. In BRRI dhan29, the urea + PM treatment had the highest AUE followed by absolute urea treatment while the urea + PM treatment gave the highest UE and PFP followed by urea treatment and urea + CD treatment. The absolute PM treatment gave the highest physiological efficiency (PE) followed by absolute urea treatment in BRRI dhan28. In BRRI dhan29, the absolute PM treatment had the highest PE followed by urea treatment and urea + PM treatment. The absolute PM treatment had the highest agro physiological efficiency (APE) both in BRRI dhan28 and BRRI dhan29. Based on this finding, it is concluded that the practice of integrated use of organic and chemical fertilizer has the scope to reduce chemical fertilizer and also contribute to increasing nitrogen use efficiency.

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Section: Nitrogen Use Efficiency (Nue)mentioning

confidence: 99%

Nitrogen Use Efficiency of Low Land Rice as Affected by Organic and Chemical Sources

Khatun¹,

Sultana²,

Bhuiya³

et al. 2015

OALib

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“…The poor utilization of nitrogen (N) fertilizers by rice is largely caused by losses of N through denitrification, ammonia volatilization, runoff, and leaching (Craswell and Vlex 1979). Leaching of N through the soil can be considered as the main N-loss mechanism in light-textured soils.…”

Section: Introductionmentioning

confidence: 99%

Effects of Zeolite Application on Rice Yield, Nitrogen Recovery, and Nitrogen Use Efficiency

Kavoosi¹

2007

Comm. in Soil Sc. & Plant Analysis

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The unique cation exchange, adsorption, hydration-dehydration, and catalytic properties of natural zeolites and their abundance have promoted their use in a wide variety of agricultural processes as soil amendments, slow-release fertilizers, and other materials. To investigate the feasibility of using a natural clinoptilolite to enhance rice grain yield, nitrogen (N) recovery and N use efficiency, an experiment was conducted in a coarse-textured rice field in the Guilan province of Iran. Three levels of 8, 16, or 24 tons of zeolite ha 21 were incorporated into the soil with and without 60 kg N ha 21 as urea, and their effects on the grain and straw yields, available K, apparent N recovery, N use efficiency, and some soil properties were determined. Results indicated a significant positive effect of treatments on the grain yield, straw, and tiller numbers of rice. All levels of zeolite with N showed a significant increase in grain yield compared with 60 kg N ha 21 and control treatment. Zeolite application also increased soil-available potassium and its uptake by rice straw significantly. The lowest apparent N recovery (40%) was obtained from application of 60 kg N ha 21 , whereas application of 8 or 16 tons zeolite ha 21 increased apparent N recovery up to 65%. Nitrogen use efficiency was also improved.

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“…It resulted in more distribution of fertilizer N and faster transformation of urea into ammonium and nitrate than solid fertilizer application. The rapid change from urea to ammonium and nitrate in fertigation treatment might be due to the urea input to the irrigation system was dissolved and spread according to soil moisture [13]leading to the exposure to microorganisms that stimulated the conversion of urea to ammonia and nitrate faster than solid fertilizer application.…”

Section: Discussionmentioning

confidence: 99%

Effects of Fertigation on Root and Plant Nutrient Distribution of Field Grown Tomato (Lycopersicon esculentum Mill.)

2016

IJRCMCE

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Abstract-Fertigation is widely adapted for tomato production in Thailand as it is an efficient method for fertilizer application. However, its mechanism, especially the influence on root and plant nutrient distribution which is the critical aspect for nutrient uptake, has been rarely reported. A field experiment was conducted during the dry season in 2013 to investigate the impact of fertigation on tomato root and plant nutrient distribution in the soil profile. Fertigation and conventional (solid) fertilizer application with the same amount of nutrients and duration of application were compared under drip irrigation system. The results showed that fertigation was more efficient than solid fertilizer application, resulting in better growth, higher fruit yield and fertilizer use efficiency. The results also indicated that fertigation had a better root system than solid fertilizer application. The roots under fertigation distributed more vertically and horizontally than those under solid fertilizer application. Fertigation produced more small roots (0.01-1.00 mm) and medium roots (1.01-2.00 mm) but less large roots (2.01-3.00 mm) than solid fertilizer application. More distribution of available form of primary nutrients (N, P and K) to root zone was also found under fertigation system. Tomato is an important economic vegetable in Thailand. In 2012, total growing area was about 6,280 ha [1]. Its growing area is mainly in the Northeast. The average yield is very low (20.7 t ha -1 ) due to poor management practices, plant pests and unfavorable environmental conditions. Furrow irrigation system used to be a common practice for the tomato growers in this area. The major drawback of furrow irrigation is its ineffectiveness in the coarse texture soil with low water use efficiency. Drip irrigation as the most efficient irrigation method is rapidly expanding and highly recommended in this area.Beside water application, solid fertilizer application (common practice for farmers) in this area is ineffective. Leaching is the main fertilizer loss as the soil is sandy with low water holding capacity. Chanthai et al.[2] compared fertigation and solid fertilizer application for tomato production under drip irrigation system. They prevented leaching of fertilizer by controlling irrigated water at root zone and covered the soil with plastic sheet to prevent excessive rain fall. Y. Rimcharoen is a graduate student of Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand S. Wonprasaid* is with Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand They found that fertigation produced greater tomato yield and nutrient use efficiency than solid fertilizer application with the same amount of nutrients. In their experiment, fertilizer was applied only 2 times for the solid fertilizer application treatment while for fertigation treatment fertilizer was applied 8 times. The more efficiency of nutrient application under fertigation th...

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Fate of fertilizer nitrogen applied to wetland rice

Cited by 33 publications

References 55 publications

Nitrogen Use Efficiency of Low Land Rice as Affected by Organic and Chemical Sources

Nitrogen Use Efficiency of Low Land Rice as Affected by Organic and Chemical Sources

Effects of Zeolite Application on Rice Yield, Nitrogen Recovery, and Nitrogen Use Efficiency

Effects of Fertigation on Root and Plant Nutrient Distribution of Field Grown Tomato (Lycopersicon esculentum Mill.)

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