| dc.creator |
Kebeney, S. J. |
|
| dc.creator |
Semoka, J. M. R. |
|
| dc.creator |
Msanya, B. M. |
|
| dc.creator |
Ng’etich, W. K. |
|
| dc.creator |
Chemei, D. K. |
|
| dc.date |
2015-03-27T13:55:35Z |
|
| dc.date |
2015-03-27T13:55:35Z |
|
| dc.date |
2014-10-11 |
|
| dc.date.accessioned |
2022-10-25T08:50:22Z |
|
| dc.date.available |
2022-10-25T08:50:22Z |
|
| dc.identifier |
Kebeney, S. J., Semoka, J. M. R., Msanya, B. M., Ng’etich, W. K. & Chemei, D. K. (2014). Effects of nitrogen fertilizer rates and soybean residue management on nitrate nitrogen in sorghum-soybean intercropping system. International Journal of Plant & Soil Science 4(3): 212-229. |
|
| dc.identifier |
2320-7035 |
|
| dc.identifier |
DOI: 10.9734/IJPSS/2015/12744 |
|
| dc.identifier |
https://www.suaire.sua.ac.tz/handle/123456789/576 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/90114 |
|
| dc.description |
This article is available at www.sciencedomain.org |
|
| dc.description |
An experiment was carried out in Busia County, Kenya at Emalomba (N 00°25′28.8″ E 034°15′
51.9″), Nambale District to assess the effects of nitrogen fertilizer rates and legume management
options on nitrate nitrogen (NO3-N) under intercropping system. Six soybean residue management
options were considered: Sole sorghum, sorghum + soybean left to maturity, sorghum + soybean
mulched, sorghum + soybean incorporated, sorghum + soybean exsitu and sorghum + soybean
exsitu and plot tilled. Three levels of nitrogen (0kg N ha-1, 40kg N ha-1, and 80kg N ha-1 as urea
were applied as top-dress and treatments arranged in randomized complete block design. Soil
NO3-N was significantly high (P<0.0010) in topsoil with a notable leaching to subsoil due to
precipitation. Control treatments had low soil NO3-N in comparison to other treatments implying
that, use of inorganic fertilizers to supplement soil N is important. Fertilizer application at 40kg N ha- 1 with respect to on-farm soybean residue management was in relation to NO3-N supply was in the
order: sorghum + soybean left to maturity > sorghum + soybean mulched = sorghum + soybean
incorporated. Experimental plots with legume residues removed had significantly (P<0.001) low
NO3-N. High leaf NO3-N observed points to transfer of N to sorghum by nitrogen fixation signifying
importance of intercropping. There was no significant difference between nitrogen fertilizers applied
at 40kg N ha-1 and 80kg N ha-1 irrespective of field managed legume residues. Sorghum
intercropped with soybean left to maturity with nitrogen fertilizer applied at 40 kg N ha-1 reflected
high (P< 0.001) soil NO3-N in comparison to the other management options. It is therefore
recommended as a possible optimum rate and legume residue management option to improve soil
NO3-N among small scale households with stretched socio-economic ability in Busia County. |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.language |
en |
|
| dc.language |
en |
|
| dc.language |
en |
|
| dc.publisher |
SCIENCEDOMAIN international |
|
| dc.subject |
Nitrogen fertilizer |
|
| dc.subject |
Intercropping |
|
| dc.subject |
Nitrate |
|
| dc.subject |
Sorghum |
|
| dc.subject |
Soybean |
|
| dc.subject |
Residue management |
|
| dc.title |
Effects of nitrogen fertilizer rates and soybean residue management on nitrate nitrogen in sorghum-soybean intercropping system |
|
| dc.type |
Article |
|
| dc.type |
Article |
|
| dc.type |
Article |
|
| dc.type |
Article |
|