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Impact of depth of placement of mineral fertilizer micro-dosing on growth, yield and partial nutrient balance in pearl millet cropping system in the Sahel

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Title Impact of depth of placement of mineral fertilizer micro-dosing on growth, yield and partial nutrient balance in pearl millet cropping system in the Sahel
 
Creator Ahmed, Ibrahim
 
Contributor Pasternak, Dov
Fatondji, Dougbedji
 
Subject micronutrient balance
cropping system
mineral fertilizer
 
Description A study was carried out in the rainy seasons of 2008 and 2009 in Niger to investigate the effects of fertilizer microdosing
on root development, yield and soil nutrient exploitation of pearl millet. Different rates of diammonium
phosphate (DAP) were applied to the soil at different depths and it was found that although micro-dosing with
DAP increased grain yield over the unfertilized control to a similar level as broadcast DAP, doubling the
micro-dosage did not increase it further. Increasing the depth of fertilizer application from 5 to 10 cm resulted
in significant increases in root length density, and deep application of fertilizer resulted in higher yields, although
the increases were generally not significant. It was postulated that the positive effect of micro-dosing resulted from
better exploitation of soil nutrients because of the higher root volume. Levels of nutrients exported from the soil
were at least as high in plants receiving micro-dosing as the unfertilized control, and plants receiving microdosing
exported 5–10 times more phosphorus from the soil than the amount added through fertilization.
 
Date 2014-11-30
2017-01-09T20:17:57Z
2017-01-09T20:17:57Z
 
Type Journal Article
 
Identifier http://oar.icrisat.org/id/eprint/8402
https://mel.cgiar.org/reporting/download/hash/3liZtIfN
Ibrahim Ahmed, Dov Pasternak, Dougbedji Fatondji. (30/11/2014). Impact of depth of placement of mineral fertilizer micro-dosing on growth, yield and partial nutrient balance in pearl millet cropping system in the Sahel. The Journal of Agricultural Science, 153 (8), pp. 1412-1421.
https://hdl.handle.net/20.500.11766/5377
Limited access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher Cambridge University Press (CUP)
 
Source The Journal of Agricultural Science;153,(2014) Pagination 1412,1421