Effect of NPK Fertilizer Rates on Growth and Yield of Field and Greenhouse Grown Pepino Melon (&lt;i&gt;Solanum muricatum&lt;/i&gt; Aiton)

Mutua, Carol; Ogweno, Joshua Otieno; Gesimba, Robert Morwani

doi:10.18052/www.scipress.com/jhpr.13.10

Cited by 4 publications

(5 citation statements)

References 45 publications

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“…Some studies have shown that the treatment of plants with solutions and mixtures of mineral salts such as NPK increased the accumulation of polyphenolic compounds several times over in comparison with test plants [16,17]. On the other hand, there is evidence of a significant decrease in the amount of soluble phenolic compounds and flavonoids in different plants under the influence of NPK [18,19].…”

Section: Discussionmentioning

confidence: 99%

Phytochemical composition of Humulus Lupulus L. in ontogeny under different treatments

et al. 2023

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Wild hop (Humulus lupulus L.) is a double-headed perennial climbing plant that belongs to the Cannabaceae family. Hops contain many biologically active compounds possessing powerful antimicrobial, antioxidant and antifungal activity, due to which its original use was for medicinal purposes and only later began to be used in beer production. The aim of the work was to identify the effects of growth regulators (hibbersib and epin-extra) and biofertilizer (powder) on the content of soluble phenolic compounds, flavonoids, tannins, carotenoids, vitamins C and B, protein and sugars in plants of common hop (Humulus lupulus L.) during ontogenesis. Root cuttings of hops were planted in the beginning of May 2022 in protected ground under laboratory conditions. In the second variant rootstock were potted in soil with 10 g/kg powders; in the third variant rootstocks were treated with hibbersib (666.6 µg/l) by spraying; in the fourth variant also, rootstocks were treated with epin-extra (500 µl/l) by spraying. After 4 weeks, all variants were transplanted to the open field. The samples for analysis (leaves) were taken 4, 8, 12 and 16 weeks after planting in the open ground, the average night temperatures were +160C, +240C, +140C and +70C, respectively. Phytochemical composition of leaves was determined by spectrophotometric method. In control plants the content of phenolic compounds and vitamin C reached the highest values in the twelfth week after planting. The synthetic growth regulators (epin-extra and hibbersib) and the biofertilizer (pudrete) were shown to change the phytochemical composition of the hop plants to different extents. Powdertet increased the vitamin and protein content to a greater extent whereas growth regulators increased the content of phenolic compounds and sugars, particularly under the influence of hibbersib.

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Section: Discussionmentioning

confidence: 99%

Phytochemical composition of Humulus Lupulus L. in ontogeny under different treatments

et al. 2023

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“…Mostly, vegetable plants from the Cucurbitaceae family shortly after flower formation fail to fertilize the embryo and cause the bisexual flower or pistil to abort due to genetic makeup or environmental conditions, resulting in decreased yield/plant [64,65]. The combined application of NAA and potassium nitrate will significantly increase the vitality and activity of the female flower and this will, therefore, reduce abortion and improve the chances of fertilization occurring [60,66,67]. Potassium helps plants remain physiologically active, building enough food to develop flowers and fruits, which in turn ultimately leads to increased productivity [2,60,68].…”

Section: Effect Of Potassium Nitrate and Naa On The Flowering Stagementioning

confidence: 99%

The Effect of Foliar Application with Naphthalene Acetic Acid and Potassium Nitrate on the Growth, Sex Ratio, and Productivity of Cucumbers (Cucumis sativas L.) under High Temperatures in Semi-Arid Areas

Alotaibi,

El Nagy,

Almuziny

et al. 2024

Agronomy

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High temperatures in late spring, summer, and autumn are one of the main elements limiting cucumber production. Heat stress in cucumber plants leads to significant changes in sex expression and negative effects at the physiological stage, including decreased absorption of water and nutrients, decreased photosynthetic functions, and increased respiration, which in turn affects growth and production. Therefore, it is very difficult for cucumber plants exposed to heat stress to improve their productivity, especially in arid and semi-arid regions. Cucumber plants bear a variety of flower forms, including staminate, pistillate, and hermaphrodites that occur in different arrangements. In addition, maleness is considered the main problem in cucumber production, as it significantly reduces fruit yield. Recently, the growth, flowering, and productivity of plants have been controlled with the help of growth-regulating substances, and one of these substances is naphthalene acetic acid (NAA), which is of great importance in modifying sex in cucumber and various cucurbit crops. Two experiments were conducted during 2022 and 2023 during the summer season to study the effect of foliar spraying of two levels of potassium nitrate, 500 mg/L and 1000 mg/L, and two levels of NAA, 50 mg/L and 100 mg/L, individually and together, and the comparison treatment in nine treatments on growth traits, sex ratio, fruit traits and yield of cucumber (Cucumis sativas L.) plants in three replicates in a completely randomized block design. The results indicated that applying the treatment containing 1000 mg/L KNO3 + 100 mg/L NAA led to obtaining the highest value in most vegetable growth, flowering, and production parameters, with a significant increase compared to the control and all other treatments. Followed by treatments consisting of potassium nitrate and NAA, which gave high values in the traits of sex ratio %, fruit setting %, fruit yield, and most other traits. This study showed the importance of spraying with both NAA and potassium nitrate, individually or in combination, and the high combined effect of both in the treatments that contained each of them in the vegetative growth traits and floral traits such as the number of female flowers, the sexual ratio, fruit set percentage, weight fruit, length fruit, and the fruit yield in cucumber plants grown in the summer season with high temperatures

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“…NPK manure at optimal doses increases secondary metabolites in plants. However, adding NPK manure above its optimum dosage will decrease the accumulation of secondary metabolites because the plant will allocate most of the nutrition for its growth and development [5].…”

Section: Cuprac Assaymentioning

confidence: 99%

“…A lack of nitrogen promotes the accumulation of non-nitrogenous metabolites, such as phenols and terpenoids. In contrast, enough nitrogen fertilizer encourages nitrogenous secondary metabolite accumulation, such as cyanogenic glycosides and alkaloids [5]. Soil factors such as macroelements (N, P, K) and microelements (Fe, Zn, and Mn) influence bioactive substance synthesis in plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of NPK Fertilizer on Growth, Phytochemical Content and Antioxidant Activity of Purslane (Portulaca grandiflora)

Putra,

Mediartha,

Setiawan

et al. 2023

Curr. Appl. Sci. Technol.

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Purslane (Portulaca grandiflora) is a succulent plant that contains phytochemicals including flavonoids, carotenoids, polyphenolic acids, sterols, and reducing agents. The pharmacological properties of this plant include antioxidant activity, and the plant is used in sore throat and skin rashes medications, and for detoxification purposes. The plant’s secondary metabolite content is influenced by mineral nutrition. The types and amounts of plant secondary metabolites are determined by soil nutrients. Therefore, this research aimed to observe and analyze the NPK fertilizer effect on plant growth, total phenolics, and antioxidant activity in purslane. Purslane planting was carried out by applying NPK fertilizer (doses of 0, 100, 200 and 300 kg/ha) in August-October 2022 at the Green House of the Department of Biochemistry, IPB University, Indonesia. The total number of leaves and branches was found to be highest with 200 kg/ha dose of NPK fertilizer treatment. The highest total phenolic content, 0.7346 mg GAE/g FW, was found for the treatment with 100 kg/ha dose of NPK fertilizer. The highest increase in antioxidant activity was observed in extracts treated with 100 kg/ha (FRAP, CUPRAC) and 200 kg/ha (DPPH, ABTS) of NPK fertilizer. Therefore, applying NPK fertilizer at optimal doses can increase the plant growth, total phenolic content, and antioxidant activity of purslane. From the research, the recommended doses was 100 kg/ha, which gave the highest total phenolic, and the highest single electron transfer antioxidant activity (FRAP, CUPRAC). Moreover, there was no significant difference in growth parameters at higher doses.

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Effect of NPK Fertilizer Rates on Growth and Yield of Field and Greenhouse Grown Pepino Melon (<i>Solanum muricatum</i> Aiton)

Cited by 4 publications

References 45 publications

Phytochemical composition of Humulus Lupulus L. in ontogeny under different treatments

Phytochemical composition of Humulus Lupulus L. in ontogeny under different treatments

The Effect of Foliar Application with Naphthalene Acetic Acid and Potassium Nitrate on the Growth, Sex Ratio, and Productivity of Cucumbers (Cucumis sativas L.) under High Temperatures in Semi-Arid Areas

Effects of NPK Fertilizer on Growth, Phytochemical Content and Antioxidant Activity of Purslane (Portulaca grandiflora)

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