The right combination of N-P-K fertilization may mitigate salt stress in custard apple (Annona squamosa L.)

Sá, Francisco Vaniés da Silva; Gheyi, Hans Raj; Lima, Geovani Soares de; Pinheiro, Francisco Wesley Alves; Paiva, Emanoela Pereira de; Moreira, Rômulo Carantino Lucena; Silva, Luderlândio de Andrade; Fernandes, Pedro Dantas

doi:10.1007/s11738-021-03225-1

Cited by 10 publications

(9 citation statements)

References 29 publications

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“…The higher electrical conductivity irrigation water decreased the TFW by 39.71%. These results agree with those observed by Sá et al [29], who observed a reduction of 217.48 g (20.3%) per plant in sugar apple (Anonna squamosa L.) plants subjected to ECw of 3.0 dS m −1 compared to those irrigated with 0.8 dS m −1 . For West Indian cherry, Silva et al [28] observed that the increase in the ECw from 0.3 to 4.3 dS m −1 promoted a linear reduction of 3.95% in the mean fruit weight per unit.…”

Section: Sv Dfsupporting

confidence: 92%

“…Ferreira et al [12] also observed a 20.80% reduction in the number of sugar apple fruits with the increase in water salinity from 0.8 to 3.0 dS m −1 and fertilization with NPK. On the other hand, the TNF increase associated with combinations C 6 , C 7 , C 8 , and C 9 and the TFW increase associated with combination C 9 in plants subjected to salt stress observed in the present study are probably related to the increase in K availability (20%), since this nutrient acts in osmotic regulation and in the activation of several enzymes that act in plant respiration and photosynthesis, directly affecting fruit production [29]. Furthermore, this effect could be related to the physiological role played by potassium in osmoregulation, intimately associated with the regulation of the cell osmotic potential and, consequently, contributing to homeostasis and fruit production [32].…”

Section: Sv Dfmentioning

confidence: 51%

“…Similar to TFW, the treatment with the salinity level of 0.6 dS m −1 and fertilization combination C 5 increased the MFW by 13.01% and 28.96% compared to the plants that received the recommended N-P-K combination (C 2 = 100-100-100%), and combination C 1 (80-100-100%) which showed the lowest MFW value (3.84 g). When applied at proper levels, phosphorus plays a key role in plant metabolism, especially due to its role in energy storage, which is vital for metabolic and structural functions such as photosynthesis [29]. Therefore, this result can be attributed to the reduction by 20% in the supplementation of P 2 O 5 and the adequate N and K 2 O levels present in combination C 6 (100-80-100%).…”

Section: Sv Dfmentioning

confidence: 99%

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Production and Quality of West Indian Cherry (Malpighia emarginata D. C.) under Salt Stress and NPK Combinations

et al. 2023

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This study aimed to evaluate the effect of fertilization combinations of nitrogen (N), phosphorus (P), and potassium (K) on the production and quality of West Indian cherry grown under salt stress in the second year of production. The study was conducted in a protected environment following a randomized block design with treatments distributed in a 2 × 10 factorial arrangement referring to two levels of electrical conductivity of irrigation water (0.6 and 4.0 dS m−1) and 10 NPK fertilization combinations (80-100-100; 100-100-100; 120-100-100; 140-100-100; 100-80-100; 100-120-100; 100-140-100; 100-100-80; 100-100-120 and 100-100-140% of the recommendation in the second year of production), with three replicates and one plant per lysimeter. Production and post-harvest variables evaluated were: the total fruit weight, total number of fruits, mean fruit weight, the polar and equatorial diameter, total soluble solids, pulp pH, titratable acidity, maturity ratio, vitamin C, reducing sugars, total phenolic compounds, total anthocyanins, and flavonoids. The results indicate that irrigation with water having a salinity of 4.0 dS m−1 negatively affected all production variables. The interaction between the ECw of 0.6 dS m−1 and the 100-80-120 NPK fertilization combination increased the total number of fruits and the total fruit weight of West Indian cherry.

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Section: Sv Dfsupporting

confidence: 92%

Section: Sv Dfmentioning

confidence: 51%

Section: Sv Dfmentioning

confidence: 99%

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Production and Quality of West Indian Cherry (Malpighia emarginata D. C.) under Salt Stress and NPK Combinations

et al. 2023

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“…(Figure 5A) shows that plant height (PH) was Adequate nitrogen doses can provide ion homeostasis in plants, favoring the uptake of this nutrient even under salinity conditions. In contrast, high N levels increase the soil EC and pH, possibly intensifying the deleterious effects of salinity (Alvarenga et al, 2019;Sá et al, 2021), which is confirmed by the Chl b (Figure 2B) and electrolyte leakage (Figure 4B).…”

Section: Resultsmentioning

confidence: 79%

Chloroplast pigments, water relationships, and growth of bell pepper under salt stress and nitrogen

Roque,

Soares,

Lima

et al. 2024

Com. Sci.

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The use of saline water sources for irrigation in semi-arid regions is a challenge for horticultural production since plants are sensitive to salt stress conditions, thus requiring techniques that allow plant acclimation, including nitrogen fertilization. From this perspective, this study aimed to evaluate the chloroplast pigments, water relationships, and growth of bell pepper plants irrigated with saline water and subjected to nitrogen fertilization. The experiment was conducted under field conditions at the Federal University of Campina Grande, Pombal - PB, where a randomized block design was adopted with a 5 x 5 factorial arrangement corresponding to five electrical conductivity levels of irrigation water (0.3, 1, 1.7, 2.4, and 3.1 dS m-1) and five nitrogen levels (50, 75, 100,125, and 150% of the dosage recommended for the crop), with three replications. The 125 and 150% N levels provided the highest relative water contents in bell pepper plants irrigated with electrical conductivity levels of up to 1.7 dS m-1. The contents of chlorophyll a, b, total chlorophyll, carotenoids, and stem diameter of bell pepper plants decreased when fertilized with 150% N and irrigated with the electrical conductivity of 3.1 dS m-1.

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“…The evaluations were made on the fully expanded leaves located in the upper third of each plant with a portable infrared gas analyzer (IRGA), model LCPro + Portable Photosynthesis System ® (ADC Bio Scientific Limited, Hoddesdon, UK)) with temperature control at 25°C, irradiance of 1200 µmol photons m −2 s −1 , and airflow of 200 mL min −1 , in order to obtain the net photosynthesis (AN) in µmol m −2 s −1 , transpiration (E) in mmol of H2O m −2 s −1 , and stomatal conductance (gs) in mol of H2O m −2 s −1 [21]. Together with leaf gas exchange analyses, we assessed chlorophyll fluorescence using an Opti Science model OS5p pulse-modulated fluorometer using the Fv/Fm protocol for assessments under dark conditions, and the maximum quantum efficiency of PSII (Fv/Fm) was estimated [21]. In addition, evaluations were made under light conditions using a modulated pulse fluorometer using the Yield protocol.…”

Section: Leaf Gas Exchange and Chlorophyll A Fluorescencementioning

confidence: 99%

Ecophysiology of Soursop Seedlings Irrigated with Fish Farming Effluent under NPK Doses

da Silva Sá,

Torres,

Oliveira

et al. 2024

Sustainability

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Soursop (Annona muricata L.) is a tropical fruit grown in the semi-arid region of Brazil, where problems of quantitative and qualitative scarcity of water for irrigation are frequent. Using alternative water sources, such as fish farming effluents, can increase water availability; however, it presents risks due to its high salinity levels. We aimed to evaluate the effect of irrigation with saline fish farming effluent and NPK doses on soursop seedlings’ ecophysiology. We conducted a greenhouse experiment using a randomized complete block design with a 2 × 5 factorial scheme. The factors consisted of two irrigation water sources (local supply water with 0.5 dS m−1 and fish farming effluent with 3.5 dS m−1) and five doses of NPK (25%, 50%, 75%, 100%, and 125% of the fertilizer recommendation of 100:300:150 mg dm−3 of N:P2O5:K2O for soil). The soursop seedlings showed the best growth results for plant height, stem diameter, and shoot dry mass when irrigated with low-salinity water at 95% of the recommended NPK dose. However, under saline stress, the soursop seedlings showed optimal growth when fertilized with 69% of NPK dose. We recommend the following NPK fertilization for soursop seedlings: 95:285:143 mg dm−3 of N:P2O5:K2O for those irrigated with low-salinity water and 69:207:104 mg dm−3 for those irrigated with fish farm effluent. Irrigating with fish farm effluent can be a practical option for soursop seedlings as it can help save fertilizers and promote environmental sustainability.

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The right combination of N-P-K fertilization may mitigate salt stress in custard apple (Annona squamosa L.)

Cited by 10 publications

References 29 publications

Production and Quality of West Indian Cherry (Malpighia emarginata D. C.) under Salt Stress and NPK Combinations

Production and Quality of West Indian Cherry (Malpighia emarginata D. C.) under Salt Stress and NPK Combinations

Chloroplast pigments, water relationships, and growth of bell pepper under salt stress and nitrogen

Ecophysiology of Soursop Seedlings Irrigated with Fish Farming Effluent under NPK Doses

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