Biomass Accumulation and Nutritional Requirements of Potato as Affected by Potassium Supply

Soratto, Rogério Peres; Job, André Luiz Gomes; Fernandes, Adalton Mazetti; Assunção, Natália Silva; Fernandes, Francisco Maximino

doi:10.1007/s42729-020-00192-3

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…K fertilizer increased root, stem, and total plant N, P, and K accumulation and leaf N and K accumulation, and root and stem N, P, K content, and leaf N and P content. It showed that K fertilizer promoted root, stem, and leaf N, P, and K absorption and increased N, P, and K accumulation of P. bournei seedlings, consistent with some research results [17,47,48]. With the increase of K fertilizer rate, root, stem, and leaf N and P contents, and root, stem, leaf and total N, and P accumulation increased first and then decreased, indicating that excessive K fertilization may cause poisoning to the root system of P. bournei seedlings, reducing N and P absorption [49].…”

Section: Effect Of K Fertilizer On Nutrients Accumulation and Allocation In P Bournei Seedlingssupporting

confidence: 89%

Fertilization Regulates Accumulation and Allocation of Biomass and Nutrients in Phoebe bournei Seedlings

Yang

Chen

et al. 2021

Agriculture

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To study the effect of N-P-K fertilization on Phoebe bournei seedlings’ organs dry biomass, and nutrients accumulation and allocation, and to further uncover how nutrients regulating dry biomass formation through fertilization, we utilized the “3414” experiment design. The results showed that N, P, and K fertilizer promoted dry biomass accumulation, and root, stem, and total plant N, P, and K content and accumulation in seedlings. The dry biomass accumulations of root, stem, and total plant increased first and then decreased with the increase of N, P, and K application rates, which was basically consistent with the change in dry biomass allocations and N, P, and K contents, accumulations, and allocations. Root N accumulation, root P accumulation, and total plant K accumulation were the key indicators for seedlings growth. N fertilizer had the greatest effect on total dry biomass and root N accumulation, was the most important fertilizer for the growth of Phoebe bournei seedlings, can regulate the growth of root and leaves, is beneficial to root growth at medium-low N fertilizer levels (N: 0.266–0.532 g·plant−1), and leaves growth at high N fertilizer level (N: 0.798 g·plant−1). P fertilizer rate can regulate the seedling stem growth, reaching the maximum at the medium level P application (P2O5: 0.1332 g·plant−1). K fertilizer had the greatest effect on the root P accumulation and total K accumulation, promoting K transport from leaves to root, improved root and stem growth, and inhibited leaves growth. The N, P, and K fertilizer three-factor application can better promote nutrient uptake than double-factor and single-factor fertilization, with highest dry biomass accumulation at the medium level of N, P, K fertilizer (N: 0.532 g·plant−1; P2O5: 0.1232 g·plant−1; K2O: 0.356 g·plant−1). In conclusion, N, P, and K fertilization promoted the N, P, and K absorption, increased root, stem, and leaves N, P, and K content and accumulation, and promoted the seedling dry biomass accumulation, but reversed under excessive application of N, P, and K fertilizer; and N fertilizer was beneficial to root and leaves growth, P fertilizer to stem growth, and K fertilizer to material transfer, which provided a theoretical basis for robust Phoebe bournei seedling cultivation.

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Section: Effect Of K Fertilizer On Nutrients Accumulation and Allocation In P Bournei Seedlingssupporting

confidence: 89%

Fertilization Regulates Accumulation and Allocation of Biomass and Nutrients in Phoebe bournei Seedlings

Yang

Chen

et al. 2021

Agriculture

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“…Omission of P has been found to affect the uptake of most of the essential plant nutrients on acidic to slightly acidic soils (Adalton Mazetti Fernandes et al, 2017;Borges et al, 2016;Kumar et al, 2018); this in turn affects most plant processes, thus reducing the yield. Higher uptake of N, K, Ca, Mg, S, B, Cu and Fe has been associated with P fertilization as a result of its effect on plant biomass (Fernandes et al, 2015;Fernandes et al, 2017;Soratto et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…This would mean K needed in customised fertilizers is minimal. A recent study on tropical clay soil has shown that the benefits of K in improving uptake of other nutrients are reduced under medium and adequate levels of K in the soil (Soratto et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Response of potato crop to selected nutrients in central and eastern highlands of Kenya

Mugo

Karanja

Gachene

et al. 2021

Cogent Food & Agriculture

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Low nutrients have been reported in potato-growing areas of Kenya, prompting a need for nutrient management research. A study was designed to determine the effect of omitting nutrients on potato growth, yield and harvest index. On-farm nutrient omission trials were set during the long rains (LR) and short rains (SR) of 2016 in which the treatments involve the judicious omission of N, P, K, S and B. Additional two treatments were included with one receiving all the nutrients and a control where no nutrients were added. The treatment was laid in a randomized complete block design with three replications. Potato yields reduced by 6.6 and 11.2 t ha −1 in N-omitted treatments in LR and SR, respectively, when compared to the one receiving all the nutrients, while omitting P resulted in respective yield reductions of 3.8 and 2.0 t ha −1 . Stability analysis revealed that omission of N was more stable with a regression coefficient of 0.5; it was followed by P with a value of 1. Potassium, S and B were limiting nutrients only in some farms. N and P should continue to be included in potato nutrient management, while K, S and B should be added based on soil test.

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“…Moreover, the results of Abdel-Salam and Shams [15] were in the same line, highlighting the positive effect of combining various sources of potassium on potato plant growth, while Shunka et al [32] indicated the interaction of potassium application with other macronutrients such as nitrogen. Finally, Zelelew et al [33] reported a variable response to potassium fertilization depending on the potato cultivar, while Soratto et al [34] and Kumar et al [35] highlighted the importance of application timing and potassium source for crop response to potassium fertilization. In contrast, Ali et al [36] reported a positive effect on the growth of potato plants treated with feldspar-K and potassium-solubilizing bacteria; however, the results of that study are not comparable to the present work because different treatments were applied.…”

Section: The Effect Of Potassium Application On Plant Vegetative Grow...mentioning

confidence: 99%

Plant Growth, Yield and Quality of Potato Crop in Relation to Potassium Fertilization

et al. 2021

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The present work evaluated the effect of soil (S) and foliage (F) applied potassium on the growth, yield, and quality of potato plants. Potassium was added in soil at the recommended rate for all the treatments combining mineral fertilizers with K-feldspar and biofertilizers, while foliar spraying included the application of potassium citrate (PC), potassium silicate (PS), and monopotassium phosphate (MP). The obtained results showed that plant height was highest following treatment with 100% mineral potassium fertilizer under the foliar application of MP, while the content of P, K, and total carbohydrates in leaves also increased with the same fertilization treatment. On the other hand, the highest values for number of stems and fresh and dry weight per plant, as well as the highest nitrogen content in leaves, were obtained after the addition of mineral potassium fertilizer and the foliar spraying of PC, regardless of the growing season. Yield parameters were positively affected by the combination of mineral potassium fertilizers (100% or 80% K2SO4 + 20% K-feldspar + biofertilizer) and the foliar spraying of MP, while the total nitrogen, protein, amino acids, potassium, phosphorus, and starch content of tubers were positively affected by the same mineral fertilizer treatments combined with foliar spraying of MP or CP. In conclusion, the application of mineral potassium fertilizer with foliar spraying of MP or CP increased most of the plant growth- and tuber chemical composition-related parameters. These results highlight the importance of potassium fertilizer regimes for achieving high tuber yields and improving the quality of tubers in a sustainable and cost-effective manner.

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Biomass Accumulation and Nutritional Requirements of Potato as Affected by Potassium Supply

Cited by 16 publications

References 37 publications

Fertilization Regulates Accumulation and Allocation of Biomass and Nutrients in Phoebe bournei Seedlings

Fertilization Regulates Accumulation and Allocation of Biomass and Nutrients in Phoebe bournei Seedlings

Response of potato crop to selected nutrients in central and eastern highlands of Kenya

Plant Growth, Yield and Quality of Potato Crop in Relation to Potassium Fertilization

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