Effects of potassium fertilization and commercial substrates on development of passion fruit seedlings under greenhouse condition

Miyake, Rodrigo Takashi Maruki; Takata, William Hiroshi Suekane; Guerra, Wellington Eduardo Xavier; Forli, Fernanda; Narita, Nobuyoshi; Creste, José Eduardo

doi:10.5897/ajar2016.11509

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…This effect is due to the fact that N and K are essential nutrients for the development of the plant, being directly involved in the photosynthetic process, through the fixation and diffusion of CO 2 , generating the production of photoassimilates, and consequently, the accumulation of biomass (Xu et al, 2020). With respect to nitrogen fertilization (Figueiredo et al, 2020) and potassium (Miyake et al, 2016), it was found that the application of adequate doses of these nutrients favors the accumulation of biomass in passion fruit.…”

Section: Discussionmentioning

confidence: 99%

Effect of saline stress, and nitrogen and potassium fertilization on morphophysiology of Passiflora edulis Sims. f. flavicarpa Dreg.

Pereira,

Nóbrega,

Fátima

et al. 2024

Agraria

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In Brazil semi-arid regions, excess of soluble salts is a limiting factor for the success of agricultural crops. An adequate supply of nutrients can cause positive responses in plant species under salt stress. The objective of this study was to analyze the effect of nitrogen and potassium on the morphophysiology of passion fruit (Passiflora edulis) seedlings subjected to saline stress. The design was a randomized blocks design, with treatments generated by the Box Central Composite Design matrix. Five electrical conductivities of irrigation water (ECw = 0.5, 0.98, 2.15, 3.32, and 3.80 dS m -1 ), five doses of nitrogen (N) and potassium (K) (0.0, 29.08, 100.0, 170.92, and 200.0%), in four replications. The combination of 200% NK stimulated the synthesis of chlorophyll a, and total chlorophyll under low salinity conditions (0.5 dS m -1 ). The chlorophyll a/b ratio was higher at ECw of 3.8 dS m -1 and under a concentration of 20.23% NK. The increase in water salinity from of 0.5 dS m -1 caused deleterious effects on the growth of passion fruit seedlings. The doses of NK between 100% and 120% improved the absolute growth rates of plant height and stem diameter, chlorophyll b, aerial dry matter, and total dry matter. The 200% dose of NK improved the leaf mass ratio. The combination of N and K applied foliar proved to be efficient in reducing the effects of salinity on the synthesis of photosynthetic pigments, providing better growth conditions for yellow passion fruit seedlings.

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Section: Discussionmentioning

confidence: 99%

Effect of saline stress, and nitrogen and potassium fertilization on morphophysiology of Passiflora edulis Sims. f. flavicarpa Dreg.

Pereira,

Nóbrega,

Fátima

et al. 2024

Agraria

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Effect of Foliar-Applied Tannery Sludge on Growth and Physiology of Passiflora Edulis Seedlings

Sales

Berilli²,

Pereira³

et al. 2020

Reveng

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Today, industries are increasingly concerned about the disposal of their waste. One of the proposed solutions to deal with certain wastes is through agriculture in the form of fertilizers. Thus, the objective of this study was to evaluate the effect of liquid tannery sludge as foliar fertilizer on the growth and physiology of passion fruit seedlings. The experiment was conducted in a greenhouse, in a randomized block design with six replications. Six treatments were applied to leaves: tannery sludge diluted in water (132, 263, 395 and 527 mL L-1); only water (control); and the conventional treatment. The following growth characteristics were evaluated: leaf production, plant height, crown diameter, stem diameter, total fresh matter and dry matter of the plants. The physiological characteristics evaluated were the indices chlorophyll, nitrogen balance, flavonoids, anthocyanins, and plant color. The flavonoid index increased in plants that received foliar application of 527 mL L-1 without compromising the other characteristics evaluated. The doses 263, 395 and 527 mL L-1 showed the best results for the growth characteristics, equaling those of the conventional treatments. Foliar application of tannery sludge can be recommended for yellow passion fruit seedlings.

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Alternative substrates and controlled-release fertilizer in the production of yellow passion fruit seedlings

Muniz

Neto²,

Lunz³

et al. 2020

Com. Sci.

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There are many residues that can be used for agriculture, especially as a substrate. However, it is often necessary to fertilize the growing media so that the seedlings can be produced with quality. The objective of this study was to evaluate the use of alternative and commercial substrates associated with different controlled-release fertilizer levels in producing yellow passion fruit seedlings. The experiment was conducted at the Embrapa Acre seedling nursery, with 50% luminosity. We used a randomized block experimental design in a 5 x 3 factorial scheme with 15 treatments, 4 replicates, and 10 plants per plot. The treatments consisted of five controlled-release fertilizer levels (0 kg m-3, 3 kg m-3, 6 kg m-3, 9 kg m-3, and 12 kg m-3) combined with lumps of acerola fruits (LAF), Brazil nut peel (BNP), and commercial (CS) substrates. The evaluated variables were seed height, stem diameter, number of leaves, shoot dry mass (SDM), root dry mass (RDM), total dry mass (TDM), and seedling quality index (SQI). Use of the alternative lumps of acerola fruit (LAF) substrate associated with the 10 kg m-³ level of controlled-release fertilizer promoted the best results. BNP has potential for use as a substrate for passion fruit seedlings, however adjustments are necessary to achieve an adequate composition.

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Effects of potassium fertilization and commercial substrates on development of passion fruit seedlings under greenhouse condition

Cited by 4 publications

References 16 publications

Effect of saline stress, and nitrogen and potassium fertilization on morphophysiology of Passiflora edulis Sims. f. flavicarpa Dreg.

Effect of saline stress, and nitrogen and potassium fertilization on morphophysiology of Passiflora edulis Sims. f. flavicarpa Dreg.

Effect of Foliar-Applied Tannery Sludge on Growth and Physiology of Passiflora Edulis Seedlings

Alternative substrates and controlled-release fertilizer in the production of yellow passion fruit seedlings

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