Journal of Food, Agriculture and Environment

Vol 4, Issue 3&4,2006
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Phosphorus fertilization effect on dry matter production and biomass partitioning in sweet potato (Ipomoea batatas) grown on an acidic loamy-sand Alfisol


Ezekiel Akinkunmi Akinrinde

Recieved Date: 2006-07-04, Accepted Date: 2006-10-17


Augmentation of soil available phosphorus (P) is often essential to reverse the acid infertility conditions of most tropical soils, especially when arable crop growers prefer tubers or grains to excessive vine and leaf production. As part of the ultimate goal to recommend fertilizer use for crop production on a medium acid (pH 5.8) luvisol/alfisol (Typic Paleustalf), this study sought to evaluate the effect of P fertilization on the dry matter (DM) production and biomass partitioning at successive growth periods of sweet potato (Ipomoea batatas) grown on the benchmark soil type. The plants were treated to three levels (0, 30 and 60 kg/ha) of P using single super phosphate, SSP (9% P). The treatments were replicated three times to give a total of nine experimental field plots in randomised complete block design. The changes in DM contribution of the plant parts (vine, root, petiole, lamina and tuber) after 3, 5, 7, 9, 11 and 13 weeks of growth were evaluated. Lamina, tuber and vine contributed most of the crop’s dry biomass at each of the P application levels and sampling periods while the seed stock contributed the least. The highest P contents in the lamina were recorded at the 5th, 9th and 7th weeks after planting (WAP) for the P 0, 30 and 60 kg/ha treatments, respectively while DM production was at its respective peaks during the last sampling period (13 WAP). Maximum production of tuber and lamina was at P 30 and 60 kg/ha, respectively. The short- and long-term responses to SSP (compared with some other fertilizer materials) by selected cultivars of the crop need to be ascertained in future studies.


Superphosphate, dry matter partitioning, sweet potato, Typic paleustalf, optimum rate

Journal: Journal of Food, Agriculture and Environment
Year: 2006
Volume: 4
Issue: 3&4
Category: Agriculture
Pages: 99-104

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :