Use of Organic Fertilizers for Lettuce Plug Plant Production

Vetrano, Filippo; Iapichino, Giovanni; Poma, M. A.; Fascella, Salvatore; Incalcaterra, G.

doi:10.17660/actahortic.2009.807.90

Cited by 2 publications

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“…There is a strong bond between the quality of vegetable seedlings and the performance that they will have after transplanting. High fertilization rates during lettuce transplant production positively influence seedling growth and results in higher yields and larger head weight in greenhouse cultivation [16]. So, to reach the goal of producing high-quality lettuce seedlings in a short time with high field performance during crop cultivation, transplant growers often adopt daily applications of water with high concentrations of fertilizers (especially nitrogen) that can run off from the limited substrate volume in the containers, resulting in costly leaching losses and environmental pollution [17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Bacterial Inoculum and Fertigation Management on Nursery and Field Production of Lettuce Plants

et al. 2020

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Plant growth-promoting rhizobacteria have been applied to different vegetable crops but there is still no information on the effect of bacterial biostimulant application under variable nutritional level on lettuce seedlings and their performance after transplanting in the field. This study aimed to evaluate the efficacy of a bacterial biostimulant to enhance growth and quality of lettuce seedlings fertigated with increasing nutrient rates and to assess the efficacy of these treatments on lettuce head production. Lettuce seedlings were inoculated with 1.5 g L−1 of TNC BactorrS13 (a commercial biostimulant containing 1.3 × 108 CFU g−1 of Bacillus spp.) and fertigated with a nutrient solution containing 0, 1, 2, and 4 g L−1 of NPK fertilizer (20-20-20). At the end of transplant production, the plants were evaluated for greenhouse cultivation. The effect of fertigation rate on seedling height, dry biomass, dry matter percentage, and water use efficiency was evident up to 2 g L−1 of fertilizer in the non-inoculated seedlings, whereas fresh biomass and nitrogen use efficiency changed up to 4 g L−1 of fertilizer. The use of the bacterial biostimulant modified seedling growth and its response to nutrient availability. The inoculation of the substrate with Bacillus spp. promoted plant growth and allowed seedlings to reach the highest height and biomass accumulation. The physiological age of lettuce seedlings showed a strong influence on plant growth and production after transplanting. The bacterial treatment positively affected the yield and nitrate content of lettuce plants.

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Section: Introductionmentioning

confidence: 99%

Effect of Bacterial Inoculum and Fertigation Management on Nursery and Field Production of Lettuce Plants

et al. 2020

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Fertigation Management and Growth-Promoting Treatments Affect Tomato Transplant Production and Plant Growth after Transplant

et al. 2020

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Plant biostimulants are of interest as they can stimulate plant growth and increase resource utilization. There is still no information on the use of plant growth-promoters under variable nutritional conditions in the nursery and the effects on tomato seedling growth and plant performance after transplant. This study aimed to evaluate the suitability of gibberellic acid (GA3) or bacterial biostimulant treatments to enhance the growth and quality of greenhouse-grown tomato (Solanum lycopersicum ‘Marmande’) seedlings, fertigated with increasing nutrient rates and to assess the efficacy of these treatments on the early growth of tomato plants. During autumn 2019, tomato seedlings were inoculated with 1.5 g L−1 of TNC BactorrS13 (a commercial biostimulant containing 1.3 × 108 CFU g−1 of Bacillus spp.) or sprayed with 10−5 M GA3 and fertigated with a nutrient solution containing 0, 1, 2 and 4 g L−1 of NPK fertilizer (20-20-20) when they reached the 11th BBCH growth stage for tomato. Subsequently, the seedlings were evaluated in greenhouse cultivation for 60 days until at least the 61st BBCH growth stage (January 2020). The growth of the tomato seedlings increased curvilinearly in relation to the fertigation rates. The GA3-treated seedlings showed similar or even higher growth parameters than the control seedlings fed with 4 g L−1 of fertilizer but with half of the nutrients. The inoculation of the substrate with Bacillus spp. had negative effects in the absence of fertigation but determined a greater growth at the highest fertigation rate. The bacterial inoculum of seedlings had longer-term effects than the GA3 treatment during the plant growth, but these effects were noticeable mainly when the bacterial biostimulant was associated with the highest fertigation rate.

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Use of Organic Fertilizers for Lettuce Plug Plant Production

Cited by 2 publications

References 0 publications

Effect of Bacterial Inoculum and Fertigation Management on Nursery and Field Production of Lettuce Plants

Effect of Bacterial Inoculum and Fertigation Management on Nursery and Field Production of Lettuce Plants

Fertigation Management and Growth-Promoting Treatments Affect Tomato Transplant Production and Plant Growth after Transplant

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