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Germination Response of Albizia lebbeck (L.) Benth Seed to Different Scarification Treatments in Botswana | Chapter 14 | New Perspectives in Agriculture and Crop Science Vol. 1

Evaluation of different pre-sowing treatments on germination of A. lebbeck seeds was conducted in the laboratory at Botswana University of Agriculture and Natural Resources (BUAN) from January to February 2018. The experiment was laid out in a completely randomized design (CRD) with five treatments as follows; mechanical scarification, boiling water, hot water, concentrated sulphuric acid (98.8%) and control (untreated seeds). Sulphuric acid had four different levels of exposure time (15, 30, 45 and 60 minutes), whereas boiling water had three levels of exposure time (1, 3 and 5 minutes). Each treatment had four replications. Germination percentages (GP), mean germination time (MGT) and germination index (GI) were calculated and the data were subjected to analysis of variance (ANOVA). Significant (p<0.01) differences in germination parameters were observed across the treatments. Concentrated sulphuric (60 minutes) had superior absolute numbers than the rest including the control, recording 82% compared to 8% for control. However, no statistical differences were observed across the three main treatments; all sulphuric acid, boiling water (1 minute) and mechanical scarification. The control revealed the longest MGT which was significantly (p<0.01) longer than the rest. As would be expected, pre-sowing treatments which outperformed others in terms of germination percentages recorded, significantly (p<0.01) increased the GI as compared to control. Based on these findings, mechanical scarification, boiling (1 minute) and hot water treatments are recommended as suitable seed pre-sowing treatments for enhancing the germination of A. lebbeck seeds because the methods are cheap and easy to perform. Although concentrated sulphuric acid yielded the best rest results the method is not recommended because of its high cost and the danger it poses to workers.

Author(s) Details

Kemoemetse Maphuthe
Department of Crop and Soil Sciences, Botswana University of Agriculture and Natural Resources, Gaborone, Botswana.

Witness Mojeremane
Department of Range and Forest Resources, Botswana University of Agriculture and Natural Resources, Gaborone, Botswana.

Thembinkosi Mathowa
Department of Crop and Soil Sciences, Botswana University of Agriculture and Natural Resources, Gaborone, Botswana.

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/84/1190/833-1
View Volume: https://doi.org/10.9734/bpi/npacs/v1
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