Rooting of sweet potato seedlings submitted to supplemental calcium and phosphorus nutrition on substrate

Ichikawa, Everton T. M.; Fernandes, Adalton Mazetti; Mota, Lydia Helena da Silva de Oliveira

doi:10.1590/1807-1929/agriambi.v23n11p860-868

Cited by 4 publications

(4 citation statements)

References 16 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…gal À1 ) is sufficient. Excessive P soil concentrations do not generally lead to increased adventitious rooting, as has been noted in previous research evaluating P fertility rate effects on sweetpotato (Ichikawa et al 2019).…”

Section: Resultssupporting

confidence: 65%

Decreasing Phosphorus Fertility to Reduce Sweetpotato Root Growth During Container-grown Transplant Production

Rouse¹,

Beasley²,

LaBonte³

et al. 2022

Journal of Environmental Horticulture

View full text Add to dashboard Cite

Sweetpotato [Ipomoea batatas (L.) Lam.], grown as an edible ornamental, is propagated in home gardens using locally purchased transplants. However, vigorous growth of sweetpotato limits the period of transplant salability due to root confinement. The objective of the experiment was to evaluate reductions in phosphorus (P) fertility to slow transplant root growth and extend the period of salability. Cuttings were planted into containers and fertilized at 0, 5 (0.0007), 10 (0.0012), 15 (0.0020), 20 (0.0024), and 31 mg P.L −1 (0.0040 oz P.gal−1) using a modified Hoagland solution. All transplants fertilized at ≥5 mg P.L −1 increased in shoot length, color, and biomass during the first four weeks after planting (WAP) but declined thereafter. Transplant roots fertilized at ≥5 mg P.L −1 (0.0007 oz P.gal−1) increased in total length, surface area, and volume throughout the six-week production cycle. However, P fertility <15 mg.L -1 (0.0020 oz P.gal−1) resulted in narrower storage roots with lower root volumes. Reducing P fertility from 31 (0.0040 oz P.gal−1) to 5 mg L −1 (0.0007 oz P.gal−1) did not sufficiently slow transplant rooting to prevent roots from reaching container walls to extend the period of salability. Index words: root length, root diameter, root biomass, and root architecture. Species used in this study: Sweetpotato [Ipomoea batatas (L.) Lam.].

show abstract

Section: Resultssupporting

confidence: 65%

Decreasing Phosphorus Fertility to Reduce Sweetpotato Root Growth During Container-grown Transplant Production

Rouse¹,

Beasley²,

LaBonte³

et al. 2022

Journal of Environmental Horticulture

View full text Add to dashboard Cite

show abstract

“…Equation (10) shows the activation function ELU chosen in this study. The activation function is complex to nonlinearized relationships.…”

Section: Theoretical Derivation Of Mpcnn and Lstm Algorithmsmentioning

confidence: 99%

“…Its unique, pinnate leaves, which resemble a hand with fingers, have drawn the attention of botanists for years. This species survived and was preserved following the quaternary glaciation, and it is mainly distributed in southern China [9,10]. There are few species similar to C. paliurus plants, so it is a somewhat precious species [11,12].…”

Section: Introductionmentioning

confidence: 99%

Technical Scheme for Cutting Seedlings of Cyclocarya paliurus under Intelligent Control of Environmental Factors

et al. 2023

View full text Add to dashboard Cite

Cyclocarya paliurus is a species with high economic, horticultural, and medicinal value. C. paliurus grows faster than other plants, increasing the demand for propagation through leaf and stem cuttings to produce seedlings. However, this species requires pre-control of environmental factors such as high temperatures (25–30 °C), humidity (80–90%), and specific light (2000 to 3000 lux) intensity levels during the cutting and seedling production process. However, it is difficult to predict suitable environments for the growth of C. paliurus. This study requires the use of big data technology to parameterize the method of intelligent control of the environment used in the process of making stakes and creating seedlings. Our main results were that an improved convolutional neural network and short long-term memory (LSTM) in big data technology were used with a new method, multipath hole convolution (MPCNN), to predict environmental factors in production of seedlings. Also, the research results show that the MPCNN and LSTM methods can accurately predict the necessary temperature, humidity, and light conditions in the production process of C. paliurus seedlings. For the prediction of environmental characteristics related to this species, the light characteristics have a high error distribution, but the method described here was able to accurately control this variation, with an error of less than 2%.

show abstract

“…crops have been often grown in marginal areas of tropical and subtropical climate regions, in which the soils are poor in essential nutrients (Minemba et al, 2019;Munda et al, 2019;Navarro et al, 2020;Wang et al, 2022) and have low addition of nutrients, especially phosphorus (P) (Corrêa et al, 2018;Munda et al, 2019;Kareem et al, 2020;Nyarko et al, 2022). It results in poor vegetative growth and yield (Munda et al, 2019), since P is one of the main nutrients for most plant species, including sweet potato (El-Sayed et al, 2011;Ichikawa et al, 2019). P deficiency reduces ATP synthesis, canopy photosynthetic rate, root growth, and yield and quality of sweet potatoes (Oliveira et al, 2005a;Minemba et al, 2019;Li et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Sweet potato yield and quality as a function of phosphorus fertilization in different soils

Cordeiro

Echer

Batista

et al. 2023

Rev. bras. eng. agríc. ambient.

Self Cite

View full text Add to dashboard Cite

Phosphorus (P) is an essential nutrient for growth and yield of sweet potatoes; in sandy soils, sweet potato yield and quality may be limited by application of low P doses, mainly in degraded areas. The objective of this work was to evaluate the effect of P doses on yield and quality of sweet potato root tubers grown in tropical sandy soils with different initial P availabilities: 23.2 mg dm-3 (high P - crop rotation) and 3.7 mg dm-3 (low P - post degraded pasture). Two experiments were carried out in a randomized block design, with four replicates. The treatments consisted of P doses (0, 22, 44, 88, and 176 kg ha-1) applied to the planting bed. Tuber yield, number and mean weight of tubers, P concentration in leaves and tubers, exported P, as well as the percentage of starch, reducing sugars, total sugars, and sucrose in the tubers were evaluated. P concentration in the soil was evaluated at the end of the experiment. In the area with high P availability (> 20 mg dm-3 - resin), increasing P doses did not increase root tuber yield and decreased root starch concentrations. In the area with low P availability (< 3.7 mg dm-3 - resin), root tuber yield and starch concentration peaked when applying 68 and 33 kg ha-1 of P, respectively. In areas after degraded pasture, with low initial soil P concentration, P fertilization for sweet potato crops should be carried out with a P dose of 68 kg ha-1. In areas with crop rotation and adequate soil P concentration, P fertilization should be carried out to replace the amount of P exported by the harvested root tubers to avoid decreases in soil fertility.

show abstract

Rooting of sweet potato seedlings submitted to supplemental calcium and phosphorus nutrition on substrate

Cited by 4 publications

References 16 publications

Decreasing Phosphorus Fertility to Reduce Sweetpotato Root Growth During Container-grown Transplant Production

Decreasing Phosphorus Fertility to Reduce Sweetpotato Root Growth During Container-grown Transplant Production

Technical Scheme for Cutting Seedlings of Cyclocarya paliurus under Intelligent Control of Environmental Factors

Sweet potato yield and quality as a function of phosphorus fertilization in different soils

Contact Info

Product

Resources

About