Effects of organic fertilizers on growth and yield of Roselle (Hibiscus sabdariffa L.) on BRIS soil
The application of organic fertilizers on roselle has generated much interest among the researchers and farmers for the past two decades. However, little attention is given on the plantation quality in Beach Ridges Interspersed with Swales (BRIS) soil. Roselle is generally preferred because it is...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/12794/ http://journalarticle.ukm.my/12794/ http://journalarticle.ukm.my/12794/1/48_01_25.pdf |
| Summary: | The application of organic fertilizers on roselle has generated much interest among the researchers and farmers for the past
two decades. However, little attention is given on the plantation quality in Beach Ridges Interspersed with Swales (BRIS)
soil. Roselle is generally preferred because it is rich in ascorbic acid and anthocyanin that are very beneficial for health. This
study determined the growth, yields and antioxidants of roselle on BRIS soils after application with different rate of organic
fertilizers. Roselle was treated with five different rates of goat manure i.e. T1 (control), T2 (40 mt/ha), T3 (80 mt/ha), T4
(120 mt/ha) and T5 (160 mt/ha). Plant growth, yields and antioxidants of roselle calyxes were determined at three weeks
interval for 21 weeks. Generally, organic fertilizer treated roselle showed significant increased (p<0.05) plant growth and
plant yield. Higher rate of organic fertilizer, particularly T5 (160 mt/ha) increased the stem diameter and stem height, leaves
number and leaves area as well as the biomass and number of calyx. Organic fertilizer treatments had no significant effect on
ascorbic acid, carotenoids and anthocyanin production except for T3 treated plants whereas, chlorophyll content was significantly
induced (p<0.05) in response to organic fertilizer treatments. In conclusion, application of organic fertilizers at higher rate
showed positive effects on the growth, yield and antioxidant content of roselle. Therefore, organic fertilizer should be frequently
applied in the farms to get the best growth and yields of the plant. |
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