Quantifying the effects of hydroponic systems, nutrient solution, and air temperature on growth and development of basil (Ocimum L.) species

Walters, Kellie J.

doi:10.31274/etd-180810-4456

Cited by 9 publications

(11 citation statements)

References 27 publications

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“…'Purple Ruffles' was the smallest cultivar. Future trials could plant this cultivar at higher densities to increase yield per unit area (Walters, 2015). These results are in agreement with Walters and Currey (2015) and Simon et al (1999).…”

Section: Resultssupporting

confidence: 89%

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Basil Performance Evaluation in Aquaponics

Ferrarezi

Bailey

2019

hortte

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Basil (Ocimum sp.) is a fast-growing, high-value cash crop for aquaponics. Plant suitability evaluation in tropical conditions is critical to recommend new cultivars, increasing grower portfolio and minimizing the production risks associated with untested selections. Two trials were conducted to identify suitable basil cultivars for tropical outdoor aquaponics production using the University of the Virgin Islands (UVI) Commercial Aquaponics System in the U.S. Virgin islands. We evaluated five basil cultivars in Summer 2015 (Genovese, Lemon, Purple Ruffles, Red Rubin, and Spicy Globe), and seven cultivars in Fall 2015 (Cinnamon, Genovese, Lemon, Purple Ruffles, Red Rubin, Spicy Globe, and Thai). In both trials, 3-week-old seedlings were transplanted in net pots at a density of 1.5 plants/ft2 (16.15 plants/m2). The 6-inch portions and upper portions of the canopy were harvested as a salable product and the resultant material (leaves and stems) considered as total yield per square meter. In the summer, yield was higher in ‘Genovese’ (14.91 kg·m−2) and ‘Spicy Globe’ (13.99 kg·m−2); ‘Purple Ruffles’ resulted in the lowest yield (4.18 kg·m−2). Leaf anthocyanin was greater for the red cultivars Red Rubin [28.35 anthocyanin content index (ACI)] and Purple Ruffles (34.36 ACI) compared with the other cultivars. Chlorophyll content was the highest in ‘Genovese’ [48.59 chlorophyll content index (CCI)]. In the fall, ‘Cinnamon’ (6.60 kg·m−2), ‘Genovese’ (6.70 kg·m−2), and ‘Spicy Globe’ (6.35 kg·m−2) showed the highest yield and ‘Purple Ruffles’ the lowest (1.68 kg·m−2). Leaf anthocyanin differed in all cultivars, with the higher values in Purple Ruffles (80.5 ACI) and Red Rubin (36.5 ACI). Chlorophyll content was a response of plant growth and cultivar, with values increasing over time and ranging from 12.06 (Lemon) to 17.99 CCI (Cinnamon). Plant growth index (PGI) was higher than that of other cultivars in Genovese and Lemon on day 58 (summer), and higher in Cinnamon on day 87 (fall). Yield was greater during the summer, which was calculated from May to August, in comparison with the fall, calculated from September to November. Yield declined for the fourth harvest in the summer, indicating that growers may need to end production after the third harvest and replant the crop. The results of this experiment indicate that basil has potential as a specialty, short-season, and high-value crop in the UVI Commercial Aquaponics System. Of the cultivars tested, Genovese and Spicy Globe were the highest yielding cultivars within the environmental and geographical conditions of this study for two consecutive seasons (summer and fall).

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Section: Resultssupporting

confidence: 89%

“…Our results indicate that basil adapted well to aquaponics in tropical warm conditions, because the yield was higher than that in other studies on hydroponics at northern U.S. regions using the same yield per area index (Walters, 2015). There were significant differences among the basil cultivars tested [P < 0.001 (Table 2)].…”

Section: Resultsmentioning

confidence: 38%

Basil Performance Evaluation in Aquaponics

Ferrarezi

Bailey

2019

hortte

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“…The results of present study demonstrate that it is feasible to cultivate the basil genotypes 'Alfavaca Basilicão' and 'Grecco a Palla' at a spacing of 0.20 m between plants in the NFT or DFT hydroponic system. These results corroborate the findings of Walters (2015), who reported that there was no significant difference in the SDB of basil (Ocimum basilicum L., cv. 'Nufar') with different plant spacings (0.10, 0.15, 0.20, 0.25, and 0.30 m) in the DFT system in basins.…”

Section: Biomass Productionsupporting

confidence: 92%

Biomass production and essential oil content and composition in basil hydroponic systems using treated domestic effluents

Alves

Gheyi

Silva

et al. 2021

Rev. Colomb. Cienc. Hortic.

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Reusing domestic wastewater is an alternative for irrigated agriculture, helping to decrease pressure on good quality water. This study aimed to evaluate the biomass production and essential oil content and composition in the basil genotypes ‘Alfavaca Basilicão’ and ‘Grecco a Palla’ with different plant spacing in hydroponic systems. Two experiments were carried out between March and May (Experiment I) and July and September of 2015 (Experiment II) in a completely randomized design with four replicates in a 2×3 factorial arrangement. In Experiment I, two hydroponic systems (Laminar Nutrient Flow Technique - NFT and Deep Nutrient Flow Technique - DFT) and three plant spacings in hydroponic channels (0.20, 0.30, and 0.40 m) were evaluated. In Experiment II in the DFT hydroponic system, two types of water (tap water and treated domestic effluents) and three nutrient solution recirculation intervals (at intervals of 2, 4, and 6 h) were evaluated. In general, the dry biomass per plant, oil content and oil yield of the two basil genotypes were not influenced by the hydroponic systems, plant spacing, or water type. In Experiment II, the increase between the recirculation intervals (4 or 6 h) negatively affected genotype ‘Grecco a Palla’. Linalool was the major constituent in the essential oil of the two basil genotypes, ranging from 47.00 to 70.10% (Experiment I) and from 59.47 to 63.64% (Experiment II) in genotype ‘Alfavaca Basilicão’; in genotype ‘Grecco a Palla’, it ranged from 10.19 to 43.03% (Experiment I) and from 19.94 to 53.37% (Experiment II).

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“…The average height of basil in eggshell tea fertilizer is 2.5 ± 0.41 in week 3 observation. This result is lower compared to 13.5 cm of basil in research conducted by Walters (2015). The factor affecting this result is different system of plantation.…”

Section: Treatment In Watercontrasting

confidence: 55%