Morphological response of eucalypts seedlings to phosphorus supply through hydroponic system

Niu, Fang-Hua; Zhang, Donglin; Li, Zhihui; Iersel, Marc W. van; Alem, Peter

doi:10.1016/j.scienta.2015.08.029

Cited by 17 publications

(8 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hill & L.A.S. Johnson (Niu et al, 2015). Root dry weight of holly was the same across all four experimental CRF treatments and was lower in plants given the control than in those that received 0.2 g P. Studies that have reported the effect of P fertilizer levels on RDW of Ilex crenata 'Helleri' are inconsistent.…”

Section: Dry Wt (G)mentioning

confidence: 90%

Growth response of Hydrangea macrophylla and Ilex crenata cultivars to low-phosphorus controlled-release fertilizers

Shreckhise

Owen

Niemiera

2019

Scientia Horticulturae

View full text Add to dashboard Cite

In containerized nursery-crop production, conventional phosphorus (P) fertilization amounts are reported to be in excess of plant needs which has resulted in poor P use efficiency (PUE) and subsequent P leaching from containers. Phosphorus leaching can be reduced and PUE improved without affecting plant growth by reducing P fertilization. The objective of this study was to identify the lowest controlled-release fertilizer (CRF)-P content and subsequent pour-through-extracted substrate pore-water P (PWP) concentration that produces maximal shoot growth of two common container-grown nursery crop species, Hydrangea macrophylla 'PIIHM-II' (hydrangea) and Ilex crenata 'Helleri' (holly), in a pine bark substrate. Hydrangea and holly liners were potted into 3.8-L containers containing a pine bark substrate and grown simultaneously in two different Virginia ecoregions, Middle Atlantic Coastal Plain (MACP) and Ridge and Valley (RV). Plants were fertilized with one of five CRF formulations, each containing equal nitrogen (N) and potassium (K) and 0.4%, 0.9%, 1.3%, 1.7% or 2.6% (control) P to supply containers with 0.1, 0.2, 0.3, 0.4 or 0.6 g P, respectively. In both ecoregions, hydrangea shoot dry weight (SDW) and growth index [i.e., (widest width + perpendicular width + height) ÷ 3, GI] values were maximal in plants fertilized with 0.3 to 0.4 g P or the control. The lowest CRF-P rate needed for maximal SDW and GI of holly was 0.2 g P at the RV site and 0.4 g P at the MACP site. Mean PWP concentrations that corresponded with highest SDW were as low as 0.8 and 1.2 mg L −1 for hydrangea and holly, respectively. Results from this research suggest hydrangea requires approximately half the P rate supplied by recommended rates of conventional CRFs. Since the growth response of holly to CRF-P rate at the MACP site was inconsistent with results observed at the RV site and findings in scientific literature, further research is needed to determine the minimum required CRF-P rate for this taxon.

show abstract

Section: Dry Wt (G)mentioning

confidence: 90%

Growth response of Hydrangea macrophylla and Ilex crenata cultivars to low-phosphorus controlled-release fertilizers

Shreckhise

Owen

Niemiera

2019

Scientia Horticulturae

View full text Add to dashboard Cite

show abstract

“…Among the seedlings produced in tubettes, there is a greater growth of seedlings cultivated in a modified hydroponic system, and there was no difference between production systems for seedlings produced in polyethylene bags, except for 'Mundo Novo IAC 376-4' seedlings, which showed greater growth in MHS (Table 1). Hydroponics is an alternative method of plant nutrient supply which avoids soil-nutrient reaction complexities (Niu et al, 2015), and have the potential to generate high yield per unit area using limited land, water, and no soil (Saha;Monroe;Day, 2016).…”

Section: Resultsmentioning

confidence: 99%

Seedling production of Coffea arabica from different cultivars in a modified hydroponic system and nursery using different containers

et al. 2021

View full text Add to dashboard Cite

The development of modified hydroponic cultivation has aroused interest and its use has enabled advantages in several crops, but studies for coffee are still scarce. Thus, the objective of this research was to evaluate seedling production of three Coffea arabica cultivars (Mundo Novo IAC-376-4, Catuaí IAC-62 Amarelo and MGS Paraíso 2), in a modified hydroponic system, and to compare it with the nursery production system, using plastic polyethylene tubettes and bags. Coffee seedlings in the development phase with cotyledon leaves, were cultivated in both cultivation systems. At 90 days after the implementation of the experiment, the seedlings were analyzed for growth (height, stem diameter, total number, leaf area, root area, root and shoot dry matter weight), and physiological characteristics (chlorophyll content and stomatal conductance). For the statistical analysis, a completely randomized design (CRD) was used in a factorial scheme 3 (cultivars) x 2 (containers) x 2 (cultivation systems), with four replications of ten plants per plot. The innovative production system of coffee seedlings in modified hydroponics, in combination with the use of polyethylene bags, provided greater growth of coffee seedlings with better physiological characteristics. Among the cultivars tested, MGS Paraíso 2 stood out with higher seedling growth (number of leaves, stem diameter and root and shoot dry matter weight).

show abstract

“…The Hoagland and Arnon's universal nutrient solution (1950), as modified by Niu et al (2015), was used. To ensure the salinity of the treatments, each solution was brought to a value of EC: 1.5 and 5.5 dS m -1 , with the addition of reagent level sodium chloride (99.9% purity).…”

Section: Methodsmentioning

confidence: 99%

Promissory Passiflora species (Passifloraceae) for its tolerance to water-salt stress

Salazar¹,

Silva²,

Ceballos-Aguirre³

et al. 2020

Rev. Colomb. Cienc. Hortic.

View full text Add to dashboard Cite

The aim of this study was to determine the tolerance of water and salt stress in four cultivated species of Passiflora L. Eleven accessions of four species of Passiflora of commercial interest from different plantations were evaluated. The experimental design was in sub-split plots, where the plot was the percentage of water saturation in relation to the requirement of the crop (33% and 100%). The subplot was established by the saturation levels of salt (sodium chloride reactive level - 99.9% purity) (EC: 1.5 and 5.5 dS m-1) with the 11 accessions in a completely randomized array with five replications, where the experimental unit was one plant. Results showed that accessions m11, m13 (P. edulis f. flavicarpa) and m15 (P. tarminiana) were determined as tolerant to salinity and drought; accesses m2 (P. edulis f. edulis), m12 and m14 (P. edulis f. flavicarpa) were moderately tolerant. These observations are the basis for future studies of drought tolerance in Passiflora, which must be followed by field evaluations.

show abstract

Morphological response of eucalypts seedlings to phosphorus supply through hydroponic system

Cited by 17 publications

References 36 publications

Growth response of Hydrangea macrophylla and Ilex crenata cultivars to low-phosphorus controlled-release fertilizers

Growth response of Hydrangea macrophylla and Ilex crenata cultivars to low-phosphorus controlled-release fertilizers

Seedling production of Coffea arabica from different cultivars in a modified hydroponic system and nursery using different containers

Promissory Passiflora species (Passifloraceae) for its tolerance to water-salt stress

Contact Info

Product

Resources

About