Recent Advances on the Technologies to Increase Fertilizer Use Efficiency

Xiang, Yan; Jin, Jian; Ping, He; Ming-zao, Liang

doi:10.1016/s1671-2927(08)60091-7

Cited by 116 publications

(69 citation statements)

References 5 publications

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“…Maximization of fertilizer utilization efficiency is extremely important for food security and ecological environment protection (Hu and Li, 2005;Yan et al, 2008). At present, the main techniques and methods are: 1. fertilizing accurately in accordance with the farmland nutrients and promoting formulated fertilization technology; 2. developing organic fertilizers; and 3. improving the methods of fertilizing.…”

Section: Methods For Improving Fertilizer Utilization Efficiencymentioning

confidence: 99%

Net anthropogenic nitrogen inputs (NANI) index application in Mainland China

et al. 2014

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Section: Methods For Improving Fertilizer Utilization Efficiencymentioning

confidence: 99%

Net anthropogenic nitrogen inputs (NANI) index application in Mainland China

et al. 2014

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“…The coating material types of CRF play a key role in gradually releasing the nutrient (Li et al, 2012), and the most important parameters for controlling nutrient release include the thickness of the coating membrane, followed by temperature, granule radius, soil microbial activity, etc. (Du et al, 2008;Kaplan et al, 2013), and they are controlled to match the nutrient requirement of the plants (Dai et al, 2008;Yan et al, 2008;Ni et al, 2009). Due to a lack of experience with the field performance of CRF and its high relative cost, current grower acceptance is limited (Zhao et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of a controlled-release fertilizer on yield, nutrient uptake, and fertilizer usage efficiency in early ripening rapeseed (Brassica napus L.)

Chen

Zhou

Liu

et al. 2016

J. Zhejiang Univ. Sci. B

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Background: Nitrogen (N), phosphorous (P), and potassium (K) are critical nutrient elements necessary for crop plant growth and development. However, excessive inputs will lead to inefficient usage and cause excessive nutrient losses in the field environment, and also adversely affect the soil, water and air quality, human health, and biodiversity. Methods: Field experiments were conducted to study the effects of controlled-release fertilizer (CRF) on seed yield, plant growth, nutrient uptake, and fertilizer usage efficiency for early ripening rapeseed (Xiangzayou 1613) in the red-yellow soil of southern China during 2011-2013. It was grown using a soluble fertilizer (SF) and the same amounts of CRF, such as SF1/CRF1 (3750 kg/hm 2 ), SF2/CRF2 (3000 kg/hm 2 ), SF3/CRF3 (2250 kg/hm 2 ), SF4/CRF4 (1500 kg/hm 2 ), SF5/CRF5 (750 kg/hm 2 ), and also using no fertilizer (CK). Results: CRF gave higher seed yields than SF in both seasons by 14.51%. CRF4 and SF3 in each group achieved maximum seed yield (2066.97 and 1844.50 kg/hm 2 , respectively), followed by CRF3 (1929.97 kg/hm 2 ) and SF4 (1839.40 kg/hm 2 ). There were no significant differences in seed yield among CK, SF1, and CRF1 (P>0.05). CRF4 had the highest profit (7126.4 CNY/hm 2 ) and showed an increase of 12.37% in seed yield, and it decreased by 11.01% in unit fertilizer rate compared with SF4. The branch number, pod number, and dry matter weight compared with SF increased significantly under the fertilization of CRF (P<0.05). The pod number per plant was the major contributor to seed yield. On the other hand, the N, P, and K uptakes increased at first and then decreased with increasing the fertilizer rate at maturity, and the N, P, and K usage efficiency decreased with increasing the fertilizer rate. The N, P, and K uptakes and usage efficiencies of the CRF were significantly higher than those of SF (P<0.05). The N accumulation and N usage efficiency of CRF increased by an average of 13.66% and 9.74 percentage points, respectively, compared to SF. In conclusion, CRF significantly promoted the growth of rapeseed with using total N as the base fertilizer, by providing sufficient N in the later growth stages, and last by reducing the residual N in the soil and increasing the N accumulation and N usage efficiency.

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“…The release process for the controlled-release coated urea (CRU) can be divided into the following stages [9]: (1) water (mainly vapor) penetration; (2) dissolution in the solid core; and (3) pressure build-up and/or swelling (in the alkyd type only). There are two pathways in the third stage: "failure" release if rupture occurs or "diffusion" release.…”

Section: Nitrogen Release Characteristic Of Controlled-release Coatedmentioning

confidence: 99%

“…Because of the low use efficiency of N and the maximum use of nitrogen fertilizer, the use of urea poses a dilemma. To increase the efficient use of urea and minimize its negative impact on the environment, controlled-release fertilizers have been proposed as one of the solutions [8,9].…”

Section: Introductionmentioning

confidence: 99%

Application of Graphene-Oxide-Modified Polyacrylate Polymer for Controlled-Release Coated Urea

Wang

Shen

et al. 2018

Coatings

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Polyacrylate polymer (PA) was modified with graphene oxide (GO) and the obtained composites were applied as coatings for controlled-release coated urea (CRU). The physicochemical properties of the different PA/GO coatings were characterized in detail and the nitrogen-release characteristics of the obtained CRU samples were determined in water at 25 • C. The experimental results revealed that addition of GO to PA reduced the swelling degree from 83.01% to 46.35% and improved its mechanical properties (the Young's modulus was improved from 31.52 to 34.97 MPa and the glass transition temperature was increased from 4.21 to 6.11 • C), thus dramatically slowing down the cumulative nutrient release from the CRU fertilizer from 87.25% to 59.71%. These results suggest that GO enhances the properties of PA for CRU applications, which shows that GO-modified PA is a good coating material.

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Recent Advances on the Technologies to Increase Fertilizer Use Efficiency

Cited by 116 publications

References 5 publications

Net anthropogenic nitrogen inputs (NANI) index application in Mainland China

Net anthropogenic nitrogen inputs (NANI) index application in Mainland China

Effects of a controlled-release fertilizer on yield, nutrient uptake, and fertilizer usage efficiency in early ripening rapeseed (Brassica napus L.)

Application of Graphene-Oxide-Modified Polyacrylate Polymer for Controlled-Release Coated Urea

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