Germination media for physic nut (Jatropha curcas) seednuts
2010
Perlas, F.B. | Baloro, F.V., Central Bicol State Univ. of Agriculture, Pili, Camarines Sur (Philippines)
This study was conducted to determine the chemical properties of the germination media and determine the effect of the germination medium on physic nut germination. The Completely Randomized Design (CRD) was used in the study with twelve (12) treatments replicated three times. In each treatment, 15 tuba seed nuts were sown. The garden soil + mudpress had the highest pH reading of 6.87. The garden soil + coco peat had the highest percent water holding capacity with 90.08%. The soil + sand treatment (T7) had the lowest water holding capacity 2ith 34.45%. The garden soil + compost had the highest organic matter content with 15.20%. The soil + sand treatment (T7) with 3.33%. The garden soil + mudpress got the highest total phosphorous content of 1.14%, The garden soil + coco peat got the highest total potassium content of 0.146%, the soil + sand treatment (T7) had the lowest total potassium content of 0.052%. The garden soil had the highest total calcium with 1.32%, the lowest total calcium was observed in the garden soil + coco peat treatment (T5). The garden soil + sawdust and T8 (garden soil + sand + compost) got the highest total magnesium content of 0.25%, the lowest was observed in the treatments with garden soil + sawdust (T4) and garden soil + coco peat (T5). The garden soil + sand + mudpress had the highest percent germination and percent germination energy and the longest length of germination while the lowest was in the garden soil + sand + rice hull medium. The shortest pre-germination period was observed in the garden soil + rice hull which was significantly different with the rest of the treatments. Correlation analysis showed that the chemical characteristics of the growing media did not significantly affect the germination of tuba.
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