Ibrahim, A and Pasternak, D and Fatondji, D (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. Journal of Agricultural Science. pp. 1-10. ISSN 0021-8596 (Submitted)
![[img]](http://oar.icrisat.org/style/images/fileicons/application_pdf.png) |
PDF
- Accepted Version
Restricted to ICRISAT users only Download (295kB) | Request a copy |
Abstract
A study was carried out in the rainy seasons of 2008 and 2009 in Niger to investigate the effects of fertilizer micro-dosing 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.
| Item Type: | Article |
|---|---|
| Divisions: | RP-Resilient Dryland Systems |
| CRP: | CGIAR Research Program on Dryland Systems CGIAR Research Program on Dryland Cereals |
| Uncontrolled Keywords: | mineral fertilizer, micro-nutrient balance, pearl millet, cropping system |
| Subjects: | Mandate crops > Millets Others > Fertilizer Applications |
| Depositing User: | Mr B K Murthy |
| Date Deposited: | 11 Dec 2014 03:47 |
| Last Modified: | 19 Oct 2016 09:31 |
| URI: | http://oar.icrisat.org/id/eprint/8402 |
| Official URL: | http://dx.doi.org/10.1017/S0021859614001075 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | UNSPECIFIED |
| Links: |
Actions (login required)
 |
View Item |
Altmetric
Altmetric