Christianson, C.B. and Bationo, A. and Baethgen, W.E. (1990) The effect of soil tillage and fertilizer use on pearl millet yields in Niger. Plant and Soil, 123. pp. 51-58.
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Abstract
Farmers in Niger generally do not plow their fields and are therefore unable to incorporate phosphate. Experiments were conducted in Niger to assess the effect of soil tillage, P source, and fertilizer placement on yields of pearl millet (Pennisetum glaucum [L.] R. Br.). Treatments included single superphosphate (SSP) or ground Tahoua phosphate rock (PRT) incorporated into the soil during tillage or SSP surface applied after tillage. In plots which were not tilled, P sources (SSP, PRT, and PAPR-partially acidulated rock) were broadcast on the soil surface with no incorporation. In order to improve P efficiency under zero tillage, P was point placed in the soil near the plant with either broadcast or point-placed urea. Treatments in which tillage was used showed a slight though nonsignificant yield increase over untilled plots. The yield increase did not appear to be due to phosphate incorporation but rather to direct tillage effects on early plant growth. In a comparison of SSP with PRT or PAPR broadcast on soils not receiving tillage, PRT performed poorly relative to the other P sources. SSP outyielded PAPR and PRT in 1986, but in subsequent years, no signficant difference was found between PAPR and SSP. Point placement of P or N near the plant did not significantly increase yields over broadcast treatments even though the millet was planted with wide 1 x 1 m spacing.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Millet, Niger, partially acidulated phosphate rock, phosphorus placement, phosphate rock, tillage |
| Author Affiliation: | Agro-Economic and IFDC-West Africa Divisions, International Fertilizer Development Center (IFDC), P.O. Box 2040, Muscle Shoals, AL 35662, USA |
| Subjects: | Plant Production |
| Divisions: | Millet |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 17 Feb 2017 05:16 |
| Last Modified: | 17 Feb 2017 05:16 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/14770 |
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