Effects of Controlled Release Urea on the Yield and Nitrogen Nutrition of Flooded Rice

Kiran, J. K.; Khanif, Y. M.; Amminuddin, H.; Anuar, Abdul Rahim

doi:10.1080/00103621003592333

Cited by 69 publications

(32 citation statements)

References 9 publications

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“…Another way to improve N efficiency is by using controlled-release urea (CRU). CRU generally reduces granular urea losses and increases N concentration [44]. These are, in fact, approaches to manage fertilizer dose efficiency.…”

Section: Fertilization Methods and Excessive Use Of Fertilizermentioning

confidence: 99%

“…Banding placement method produces the highest net value of corn using the lowest amount of fertilizer (60 kg/ha), while fertilizer broadcasting consumes 90 kg nitrogen/ha [19]. One of the ways to improve N efficiency is by using controlled-release urea (CRU) [44]. Bangladeshi researchers have developed about 900 agricultural technologies, but only one has been developed for fertilizer application efficiency: urea super granules (USG) [48].…”

Section: How Does Traditional Fertilizer Broadcasting Affect the Excementioning

confidence: 99%

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Effects of Fertilizer Broadcasting on the Excessive Use of Inorganic Fertilizers and Environmental Sustainability

2018

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Abstract:The excessive use of inorganic fertilizers causes serious environmental degradation, resulting in lower crop yields in Bangladesh. Seventy percent of Bangladesh farmers practice traditional fertilizer broadcasting. In the 1960s, the Bangladesh state authority launched a 'Grow More Food' campaign to feed the country's increasing population. Farmers were supplied with chemical fertilizers and pesticides at a subsidized price. Farmers increased the frequency of fertilizer applications to enhance yields. These practices are still used and have caused significant environmental degradation. In this study, we examined the effects of fertilizer broadcasting on excessive use of fertilizer and environmental risks. We collected data from 211 Bangladesh infield farmers in 2016. Respondents were interviewed using a semi-structured questionnaire. Data were analyzed by applying a binary logistic regression model to test the degree of effects between the testable variables. The study found that the effect of broadcasting on the excessive use of fertilizers is strongly significant, at 1%. It also found that younger farmers have a significant effect at 10% on the excessive use of fertilizers. Bangladesh policymakers can formulate policy on sustainable fertilizer management, introducing different placement methods on the basis of this finding. After that, the Directorate of Agricultural Extension (DAE) can carry out the policy at the field level.

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Section: Fertilization Methods and Excessive Use Of Fertilizermentioning

confidence: 99%

Section: How Does Traditional Fertilizer Broadcasting Affect the Excementioning

confidence: 99%

Effects of Fertilizer Broadcasting on the Excessive Use of Inorganic Fertilizers and Environmental Sustainability

2018

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“…The results of this study show that the ammonia volatilization loss was higher in 2013 than in 2014 (Table 1), possibly because of the high temperature and low amount of precipitation in 2013 ( Figure 3). In addition, a greater number of sunlight hours in 2013 (831 h) than in 2014 (423 h) may have promoted algal growth, causing a rise in floodwater pH and, consequently, an increase in ammonia volatilization [32,33] (Figure 3).…”

Section: Ammonia Volatilizationmentioning

confidence: 99%

Effect of the Slow-Release Nitrogen Fertilizer Oxamide on Ammonia Volatilization and Nitrogen Use Efficiency in Paddy Soil

Tang

Shen³

et al. 2018

Agronomy

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The effects of a single basal fertilization with oxamide compared with those of a split application of urea on ammonia volatilization, rice yield, nitrogen (N) accumulation, and N use efficiency were investigated in a field experiment over 2 years. The study consisted of two N fertilizers (oxamide and urea) applied at 157.5 and 225 kg N ha −1 and a no-N Control. Compared with urea, the single application of oxamide produced similar rice yields and reduced approximately 38.3% to 62.7% of the N lost through ammonia volatilization in 2013 and 2014. Oxamide applied at a rate of 225 kg N ha −1 resulted in greater aboveground accumulation of N by rice than the other treatments in both years, and oxamide fertilization resulted in the accumulation of an additional 15.2 kg N ha −1 and 15.3 kg N ha −1 compared to the amounts accumulated under the urea treatments at the same N application rates. N use efficiency was higher under oxamide than under urea treatment. In conclusion, the use of oxamide as a fertilizer can reduce N loss via ammonia volatilization, increase N use efficiency, and maintain a steady rice grain yield.

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“…With the development of science and technology, the application of controlled release fertilizer in agricultural production is becoming more and more widely. Researches at home and abroad show that slow/controlled release fertilizer fertilization can significantly improve rice [9][10][11], wheat [12][13][14], corn [15,16] and other crops yield and fertilizer use efficiency, reduce the amount of fertilizer and the labor costs, and so on; but little research has been done on the fertilization of cotton. Therefore exploring the feasible nitrogen fertilizer management mode is of great significance that can improve the cotton yield and nitrogen use efficiency, and reduce labor costs and the environmental pollution, by studying the effect of controlled release urea application on developmental growth characteristics, yield of the cotton and fertilizer use efficiency, and exploring the application effect and optimum amount of the CRU on the cotton, in order to provide the theory basis for popularization and application of CRU on cotton.…”

Section: Introductionmentioning

confidence: 99%

Effects of controlled-release urea application on the growth, yield and nitrogen recovery efficiency of cotton

Wang¹,

Li²,

Lü³

et al. 2013

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Field experiments were conducted to study the effects of the controlled release urea (CRU) application on growth yield and nitrogen recovery efficiency of cotton in the main cotton zone of the Yangtze River basin in 2010. Different nitrogen levels were set in order to determine the suitable dosage of CRU on cotton. The special purpose was to provide evidence for the CRU application in cotton fields. The results show that the application of CRU promotes the growth of cotton significantly and enhances the nitrogen supply in the whole period. Compared to the treatment with total N as base fertilizer (UB), the bod, flower, little bolls and total bolls are increased significantly. There are no significant differences in the yield between the CRU treatment and the treatment of controlled release urea and urea combined application (60%CRU + 40%U), but an increase by 12.38%-22.67% compared to the UB treatment, and an increase by 4.49%-7.23% compared to the treatments of total N split application (UD). The nitrogen uptake of CRU treatment was significantly increased by 13.01%-48.32% and 30.27%-13.01% than UB treatment and UD treatment, respectively. The nutrient recovery efficiency of CRU treatment is increased by 16.42-20.59, 5.92-11.29 and 4.22-12.59 percentage points compared to the UB treatment, UD treatment and 60%CRU + 40%U treatment, respectively. In this study, there was a good linearity relationship between the cotton yield and amount of CRU in Wuxue site. The yield of cotton response to amount of CRU could be described by the model of linear plus plateau in Jingzhou site.

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Effects of Controlled Release Urea on the Yield and Nitrogen Nutrition of Flooded Rice

Cited by 69 publications

References 9 publications

Effects of Fertilizer Broadcasting on the Excessive Use of Inorganic Fertilizers and Environmental Sustainability

Effects of Fertilizer Broadcasting on the Excessive Use of Inorganic Fertilizers and Environmental Sustainability

Effect of the Slow-Release Nitrogen Fertilizer Oxamide on Ammonia Volatilization and Nitrogen Use Efficiency in Paddy Soil

Effects of controlled-release urea application on the growth, yield and nitrogen recovery efficiency of cotton

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