Urea-N uptake by dasheen (Colocasia esculenta L. Schott) in relation to the fertilizer placement method

Gouveia, Gregory A.; Ahmad, N.; Griffith, S. M.

doi:10.1007/978-94-009-1706-4_21

Cited by 2 publications

(4 citation statements)

References 17 publications

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“…Furthermore, the majority of N is known to volatilize during the first few hours or days after application (Rochette et al ., ). It is also likely that NH 3 volatilization occurred after the inorganic fertilizer (urea) was broadcast on the soil surface (Gouveia et al ., ; Rochette et al ., ).…”

Section: Discussionmentioning

confidence: 98%

“…() for a grassland soil amended with a low‐metal sludge. While the immediate effect of urea hydrolysis is a localized increase in soil pH, to a greater extent from banded than broadcasted urea (Gouveia et al ., ; Rochette et al ., ), the net effect is an eventual reduction in soil pH due to nitrification of NH 4 + to NO 3 − (Bouman et al ., ). However, the pH at the end of the study (5·78) was higher than at the beginning (4·81) and may be linked to the recycling and eventual accumulation of basic cations in the root zone of soil under grasses.…”

Section: Discussionmentioning

confidence: 98%

“…In a study with dasheen ( Colocasia esculenta L. Schott) on the same site, Gouveia et al . () found low N uptake efficiency (≈17%) with urea application that was partly attributed to N losses through volatilization, run‐off and leaching. Fullerton () reported that up to 46% of the applied N in ammonium form was lost through volatilization in poorly buffered coarse‐textured soils in Trinidad, including the River Estate Loam used in this study.…”

Section: Discussionmentioning

confidence: 99%

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Comparative effects of food processing liquid slurry and inorganic fertilizers on tanner grass (Brachiaria arrecta) pasture: grass yield, crude protein and P levels and residual soil N and P

Luce

Gouveia

Eudoxie

2016

Grass and Forage Science

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This small-plot field study evaluated food processing liquid slurry (FPLS) as a potential fertilizer for tanner grass (Brachiaria arrecta) production on an acidic loam soil. The treatments, arranged in a randomized complete block design with three replicates, consisted of an unfertilized control, inorganic fertilizer applied at 50 and 200 kg nitrogen (N) ha À1 with and without phosphorus (P) at 50 kg P ha À1 , and FPLS applied at 50 and 200 kg N ha À1 . Compared to the unfertilized control, the FPLS applied at 200 kg N ha À1 significantly increased grass dry-matter yield (DMY), herbage crude protein (CP) and P content, and N and P uptake in the second of two trials and P uptake in both trials. However, DMY and contents, of CP and P were generally lower for the FPLS treatments compared to the inorganic fertilizers. Apparent N recovery was higher for the inorganic fertilizer treatments than FPLS treatments in trial 1, while apparent P recovery was similar among all treatments in both trials. The FPLS treatments did not significantly increase soil NO 3 -N and P concentrations, but increased NH 4 -N in the 0-15 cm layer. The results suggest that application of FPLS to tanner grass pastures is an alternative to its disposal in landfill.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative effects of food processing liquid slurry and inorganic fertilizers on tanner grass (Brachiaria arrecta) pasture: grass yield, crude protein and P levels and residual soil N and P

Luce

Gouveia

Eudoxie

2016

Grass and Forage Science

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“…(Chailou et al 1986). Urea has become the most important N carrier in many parts of the world and its reaction when added to the soil is unique in many ways in order to improve the uptake efficiency of added urea-N in upland rainfed dasheen (Gouveia et al, 1995). Several investigators studied the effect of nitrogen level on the vegetative growth and the yield components.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Sources, Levels and Defoliation on Yield and Quality of Taro

El-Sharkawy¹

2007

Journal of Plant Production

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The present study was conducted at Barrage Horticultural Research Station, Kalubia Governorate. Two field experiments were carried out during seasons of 2004 and 2005 to study the effect of nitrogen sources , nitrogen levels and defoliation on growth and corm yield, as well as some chemical constituents, of the local cv. Balady of taro plant. Three nitrogen sources. i.e. ammonium sulphate , ammonium nitrate and urea with three nitrogen levels (40,80 and 160 Kg N/Fed.) and defoliation ( leaving 4,5,6 leaves/plant) , as well as the control (not leaves removing) were used. Results showed that the application of nitrogen in the form of ammonium sulphate increased plant height, fresh weight/plant, total yield/plot, corm length and corm diameter. The results also indicated that plant height, leaf area, chlorophyll content, fresh weight/ plant, total yield/plot, corm length, and corm diameter increased with increasing nitrogen application up to 80 Kg N/Fed. Morever, defoliation of the (6 leaves and the control) gave the highest values in all characters expect the chlorophyll leaf content, diameter corm and dry matter percentage. Starch percentage of corms increased with increasing nitrogen level up to 80 Kg N/Fed., in the form of urea in addition to the control, while, nitrogen and protein percentage of corms increased with increasing nitrogen level up to 160 Kg N/Fed. in the form of ammonium nitrate and the control one.

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Urea-N uptake by dasheen (Colocasia esculenta L. Schott) in relation to the fertilizer placement method

Cited by 2 publications

References 17 publications

Comparative effects of food processing liquid slurry and inorganic fertilizers on tanner grass (Brachiaria arrecta) pasture: grass yield, crude protein and P levels and residual soil N and P

Comparative effects of food processing liquid slurry and inorganic fertilizers on tanner grass (Brachiaria arrecta) pasture: grass yield, crude protein and P levels and residual soil N and P

Effect of Nitrogen Sources, Levels and Defoliation on Yield and Quality of Taro

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