Effects of Normal Urea and Release-Controlled Urea on Root and Shoot Growth and Yield of Maize in Different Water Conditions

GuoQing, Shao; Li, Zengjia; Ning, Tangyuan; Zhang, Min; Jiang, Xiaodong; Wang, Yun; Zhao, Jianbo; LüMeiRong,; Zhang, Jie

doi:10.3724/sp.j.1006.2009.00118

Cited by 11 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gradual release of nitrogen from coated fertilizers, synchronized with plant demand, promotes nitrogen assimilation and biomass accumulation by plants, which subsequently increases yield (Shao et al, 2009;Ye et al, 2013). It is known that the period of maximum nitrogen consumption by spring wheat begins in the shoot stage and continues until the paniculation stage.…”

Section: Resultsmentioning

confidence: 99%

Effect of coated urea and NPK-fertilizers on spring wheat yield and nitrogen use efficiency

Lapushkin,

Lapushkina,

Torshin

2024

Braz. J. Biol.

View full text Add to dashboard Cite

Among the factors that increase the efficiency of mineral fertilizers, due consideration has lately been given to the development and study of fertilizers with various granule coatings. This study is focused on the test of urea and NPK fertilizers, with granules coated with 50 and 100 μm monocalcium phosphate. Two-year greenhouse trials with spring wheat were carried out on soddy-podzolic light loamy soil. Coated fertilizers have proven to be more effective than traditional ones. For instance, using coated urea improved the yield 10-11% compared to conventional fertilizer. At the same time, the weight of one plant increased by 9-11% and the weight of the ear by 10%, the number of grains in the ear was by 4-7% bigger. Similar results were obtained with NPK fertilizer. Providing a thicker coating from 50 to 100 μm significantly increased the efficiency of both urea and NPK fertilizers.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of coated urea and NPK-fertilizers on spring wheat yield and nitrogen use efficiency

Lapushkin,

Lapushkina,

Torshin

2024

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…Leaching of nitrate may be the main reason of soil nitrate decrease. Compared with NU, CU can increase the yield of maize (Shoji et al 1991), which resulted in its 'early-decrease-and-late increase (EDLI)' effect, that is, the growth of CU was lower at the 14 th leaf stage, but significantly higher after the silking stage, than that of NU (Shao et al 2008(Shao et al , 2009). The higher nitrate content of 0-40 cm soil layers of CU during the silking stage to the physiological maturity stage, which can be easily absorbed by maize, may be one of the key reasons for the effect of EDLI.…”

Section: Resultsmentioning

confidence: 99%

Effects of urea types and irrigation on crop uptake, soil residual, and loss of nitrogen in maize field on the North China Plain

Ning¹,

GuoQing²,

Li³

et al. 2012

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

Water and nitrogen managements are both very important to increase crop yield. An experiment was carried out in split plot design to study the effects of urea types (normal urea and coated urea) and irrigation on soil and fertilizer nitrogen use in maize (Zea mays L.) field in 2006 and 2007. Irrigation was used as main plot, and urea types were used as split-plot. Two irrigation levels, no irrigation in the whole growth duration and 85 mm irrigation at the blister stage, were designed. There were five nitrogen treatments, which were no nitrogen used as control (N0), normal urea 75 kg N/ha (N1), normal urea 150 kg N/ha (N2), coated urea 75 kg N/ha (C1) and coated urea 150 kg N/ha (C2). The results showed that, at the same level of irrigation and nitrogen, the soil nitrogen contents of the treatments with coated urea (CU) applied were higher in 0~40 cm soil layers, but lower in deeper soil layers, than those with normal urea (NU) applied. Irrigation increased the nitrate losing, but the nitrate loss of CU was lower than those of NU. Using CU with irrigation could increase the nitrogen uptake by maize, and more nitrogen was transfered to grain. At the same nitrogen level, CU had higher N recovery efficiency but lower soil N dependent rate than NU. When applied with CU, the nitrogen release rate was lower and the nitrogen was quickly absorbed by maize, which reduced the risk of nitrogen loss and increased the use efficiency of soil and fertilizer nitrogen. These results suggest that coated urea combined with deficit irrigation should be applied for high yield and nitrogen use efficiency of maize on the North China Plain.

show abstract

“…The continuous release of nitrogen from controlled release urea, synchronized with the crop nitrogen demand, which decreases nitrogen losses to the environment and increases nutrient availability to the crop. Then again, controlled release urea is superior to uncoated urea at delaying root senescence because of the prolonged soil nitrogen availability, which viably promotes nitrogen assimilation and biomass amassing by plants (Shao et al 2009; Ye et al 2013) [38,46] . Furthermore, controlled release fertilizers release nitrogen up to cob formation stage, yet uncoated urea neglected to supply nitrogen to this period.…”

Section: Discussionmentioning

confidence: 99%

Effect of biodegradable polymer coated urea fertilizers for the growth and yield of hybrid maize (Zea mays L.)

Balaganesh¹,

Malarvizhi²,

Sekaran³

et al. 2021

Pharma Innovation

View full text Add to dashboard Cite

Urea is an instantaneous fertilizer, releasing nitrogen (N) rapidly after application to soil as it is effectively lost as ammonia volatilization and nitrate leaching which causes nitrogen inadequacy around roots and in the long run causes a deficiency between nitrogen demand and supply. The nitrogen from controlled-release urea can be consumed by crops more congenial than the nitrogen from uncoated urea. A pot culture experiment was carried out to investigate the response of maize crop to controlled-release urea fertilizers. Three different coated materials were utilized to coat on urea viz., palm stearin, pine oleoresin, humic acid. Different thicknesses of coated urea were developed such as palm stearin coated urea (PSCU) 5, 10, 15%, pine oleoresin coated urea (POCU) 2, 4, 6%, and humic acid coated urea (HACU) 5, 10, 15%. The coated urea fertilizers impacted the growth and yield of maize and increment the yield from 26.7 -33.5% over the uncoated urea. The most noteworthy rate augmentation of yield was seen in HACU 15% (33.5%) trailed by POCU 4% (32.4%) and PSCU 10% (32.1%). It was inferred that, better synchronization between the nitrogen Release from coated urea fertilizers and growth of maize throughout the growing season.

show abstract

Effects of Normal Urea and Release-Controlled Urea on Root and Shoot Growth and Yield of Maize in Different Water Conditions

Cited by 11 publications

References 7 publications

Effect of coated urea and NPK-fertilizers on spring wheat yield and nitrogen use efficiency

Effect of coated urea and NPK-fertilizers on spring wheat yield and nitrogen use efficiency

Effects of urea types and irrigation on crop uptake, soil residual, and loss of nitrogen in maize field on the North China Plain

Effect of biodegradable polymer coated urea fertilizers for the growth and yield of hybrid maize (Zea mays L.)

Contact Info

Product

Resources

About