EVALUASI STABILITAS PRODUKSI VARIETAS UNGGULBAWANG MERAH DENGAN PEMUPUKAN FOSFAT DAN SULFUR ANTAR MUSIM SEPANJANG TAHUN

IRIANTO, IRIANTO and Yakup, Yakup and Harun, M.Umar and Susilawati, Susilawati (2014) EVALUASI STABILITAS PRODUKSI VARIETAS UNGGULBAWANG MERAH DENGAN PEMUPUKAN FOSFAT DAN SULFUR ANTAR MUSIM SEPANJANG TAHUN. Sriwijaya University. (Unpublished)

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Abstract

Shallot (A Ilium ascalonicum L.) is one of national superior commodity that should be developed by increasing planting area, productivity, and production stability. It is the consequence of the shallot demand arises continuously. However, the production and the productivity fluctuate and tend to be limited. The fluctuating and poor productions are stimulated by, for instance, unpredictable seasons change and the sensitivity of shallot in certain circumstance. For handling the burden, adaptitre superior shallot variety is necessary when the season changes unpredictably. Furthermore, the soil fertility which is one of the problems in increasing productivity and production stability, it can be coped with applying an exact strategy by using of phosphate and sulfur fertilizers in exact dosages, in order to gain a specific technology performance based on location. Success indicators of the technology implementation can be examined through physiology characters, biochemical, yield components, and yield. This research was conducted in Horticulture Main Seed Development Centre in Muaro Jambi Regency. The first research was conducted in dry season (July to September 2015) and the second research was conducted in rainy season (January to March 2016). This study used Randomized Complete Block Design with factorial. The first factor was seasons ( dry and rainy). The second factor was varieties ( Bima Brebes, Bauji, and Bangkok). The third factor was phosphate dosages (0; 125; 250; 375 kg ha· P205). The fourth factor was Sulfur dosages (O; 20, 40; 60 kg ha· 1 S). Each combination was repeated three times. Observation on Net Assimilation Rate (NAR), Leaf Area Ratio (LAR), Leaf Area Index (LAI), Crop Growth Rate (CGR), cloves number, cloves diameter, yield index, and bulbs weight per clump were measured by analysis of variance and advanced LSD test (p=0.05). The level of starch in leaf and Sulfur in bulb were shown in the graphic. Direct and indirect effects among variables were examined through path analysis. The study showed that CGR was more influenced by NAR and LAI. Bulbs weight per clump in the dry season was more affected by CGR and cloves diameter, however, in the rainy season, more influenced by CGR, cloves number, and cloves diameter. Bima Brebes variety produced the highest bulbs weight per clump in the dry season (29.90 grams), but in the rainy season, Bauji variety produced the highest bulbs weight per clump (28.42 grams). Each of them was derived from the dosage usage. 250 kg ha·1 P2O5 + 40 kg ha·1 S. The greatest stability production between dry and rainy season was shown by Bima Brebes variety with an av2 grams and the lowest yield fluctuating, 2%.

Item Type: Other
Subjects: S Agriculture > S Agriculture (General) > S631-667 Fertilizers and improvement of the soil
Divisions: 05-Faculty of Agriculture > 54001-Agricultural Science (S3)
Depositing User: Mrs Susilawati Amri
Date Deposited: 22 Dec 2020 05:57
Last Modified: 22 Dec 2020 05:57
URI: http://repository.unsri.ac.id/id/eprint/38810

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