Exponential Fertilization Regimes Improved Growth and Nutrient Status of Quercus nuttallii Container Seedlings

Ni, Ming; Gao, Zhenzhou; Chen, Hong; Yu, Wanwen; Yu, Fangyuan

doi:10.3390/agronomy12030669

Cited by 4 publications

(4 citation statements)

References 52 publications

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“…The amount of fertilizer per application was calculated using the exponential fertilization formula [16] as shown in Table 1. The amount of fertilizer calculated in Table 1 for each application was dissolved into 900 mL of water.…”

Section: Experimental Fertilization Designmentioning

confidence: 99%

Combined Application of Nitrogen and Phosphorus Promotes the Growth and Nutrient Accumulations of Cinnamomum camphora Container Seedlings

Mao,

Zhang,

Liu

et al. 2024

Agriculture

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Combining the application of nitrogen and phosphorus is widely recognized as an effective measure to promote seedling growth. The purpose of this study was to investigate the effects of the combined application of nitrogen and phosphorus on the growth and nutrient status of C. camphora container seedlings. Exponential fertilization was applied to a range of fertilizers, including single nitrogen fertilizer, single phosphorus fertilizer, and combinations of nitrogen and phosphorus to C. camphora. Eight distinct fertilization levels of treatment (CK, N1, N2, N3, P, N1P, N2P, and N3P) were established. The height and ground diameter of the seedlings were determined periodically in each treatment group. Biomass, root system (including root length, root surface area, and root volume), and nutrient accumulation (content of soluble sugars, soluble proteins, and starch in the root system, stems, and leaves) were determined for each treatment group of seedlings. The N3P treatment (N: 9000 mg∙plant−1 + P: 6000 mg∙plant−1) had the most significant effect on the height and ground diameter of C. camphora container seedlings, while the N3 treatment (N: 9000 mg∙plant−1) proved to be the most beneficial for biomass accumulation among the eight different fertilizer levels. In addition, a single P fertilizer (P: 6000 mg∙plant−1) emerged as the most effective fertilizer for enhancing root morphology (root length, root surface area, root volume, and root average diameter) and accumulating nutrient composition (soluble sugar, soluble protein, and starch). Furthermore, it was discovered that a high level of nitrogen fertilization hindered the accumulation of nutrient composition in C. camphora container seedlings. Our comprehensive analysis revealed that nitrogen fertilizer promoted the morphological growth of C. camphora container seedlings, while phosphorus fertilizer proved to be the most beneficial for root growth and nutrient composition accumulation. Additionally, it was emphasized that controlling the quantity of nitrogen fertilizer is also a crucial measure.

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Section: Experimental Fertilization Designmentioning

confidence: 99%

Combined Application of Nitrogen and Phosphorus Promotes the Growth and Nutrient Accumulations of Cinnamomum camphora Container Seedlings

Mao,

Zhang,

Liu

et al. 2024

Agriculture

Self Cite

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“…Fertilization is the most direct way to replenish nutrient elements to promote the rapid growth of seedlings and improve the quality of seedlings, and reasonable fertilization methods can provide sufficient nutrients for each stage of plant growth and create a good nutritional environment [1,2]. Conventional fertilization utilizes only one fertilization application or applies the same amount of fertilizer from the beginning to the end of the seedlings, which ignores the nutrient demand of seedlings in each period and also leads to the waste of fertilizers and the occurrence of problems such as soil physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitrogen Forms on Root Morphology and Nitrogen Accumulation in Pinus tabuliformis carr. Seedlings under Exponential Fertilization

Liu,

Li,

et al. 2024

Forests

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In this study, the effects of different fertilization methods and nitrogen forms on the root morphology and nitrogen accumulation of Pinus tabuliformis carr. were investigated, and the interaction mechanism between roots and nitrogen fertilizer was analyzed to provide a theoretical basis for the rational fertilization of Pinus tabuliformis. The total amount of nitrogen fertilizer applied to seedlings was 100 mg·plant−1; four nitrogen form treatments of ammonium nitrogen, nitrate nitrogen, ammonium nitrate 1:1, and amide nitrogen were set up; and two fertilization methods of conventional and exponential fertilization were applied, with a total of eight experimental treatments. By measuring root parameters, plant biomass, and nitrogen accumulation, the correlation between fertilization method and nitrogen form on the root index of seedlings was analyzed, and the effects of fertilization methods and nitrogen forms on the root growth of seedlings were discussed. Compared with conventional fertilization, exponential fertilization significantly promoted root growth and development, and amide nitrogen was the best nitrogen form. The total length, total surface area, total volume, average diameter, root tips, root/shoot ratio, root tissue density of seedlings’ roots, biomass, and nitrogen accumulation of seedlings in exponential fertilization with amide nitrogen EF3 treatment all increased substantially compared with the others, The effects of fertilization mode, nitrogen form, and their interaction on the partial growth of Pinus tabuliformis seedlings were significant (p < 0.05). The correlation analysis of each index showed that the correlation between nitrogen accumulation and biomass was strongest. Therefore, considering the morphological and structural characteristics of the root system and the nitrogen accumulation in the root system, amide nitrogen in the experimental fertilization can better promote the growth and development of the root system of seedlings.

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“…Previous studies reported that the cultivation of oaks is becoming increasingly important as a stabilizer of ecosystems with increasing climate extremes [ 16 ]. Nevertheless, the quality of oak seedlings is inconsistent, resulting in suboptimal reforestation of oaks [ 17 ]. The slow growth of the initial aboveground seedlings of oak species, high rates of acorn predation, and growth inhibition by flooding were cited as possible causes of oak regeneration problems in lowland deciduous forests [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Different Phenotypic, Photosynthetic, and Physiological Responses to Flooding between Q. nuttallii and Q. palustris

Sun,

Wang,

et al. 2024

Plants

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Flooding stress is an increasingly serious problem in wetlands, often affecting large areas of crops and timber production areas. The current study aimed to explore the species differences in responses to flooding stress between Q. nuttallii and Q. palustris in an outdoor environment. All the tested plants survived after a 60-day flooding treatment that left 5 cm of water above the soil surface. This suggests that the two species are flood-tolerant, so they can be applied in the construction of riparian protection forests and wetland restoration. Compared with control conditions, flooding treatment significantly decreased seedling height and diameter and the Pn, Gs, Tr, Fv/Fm, ABS/CSm, TR0/CSm, ET0/CSm, RE0/CSm, IAA, and GA3 content and significantly increased the content of MDA, H2O2, soluble sugars, SOD, POD, ADH, ABA, and JA. Under control conditions, Q. nuttallii showed significantly greater growth and photosynthetic capability than Q. palustris. In contrast, Q. palustris exhibited less inhibition of growth and photosynthesis, oxidative stress levels, and antioxidant enzyme activities than Q. nuttallii under flooding conditions. The findings indicate that Q. palustris has better defense mechanisms against the damage caused by flooding stress than Q. nuttallii. Q. nuttallii was more sensitive and responsive to flooding than Q. palustris.

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Exponential Fertilization Regimes Improved Growth and Nutrient Status of Quercus nuttallii Container Seedlings

Cited by 4 publications

References 52 publications

Combined Application of Nitrogen and Phosphorus Promotes the Growth and Nutrient Accumulations of Cinnamomum camphora Container Seedlings

Combined Application of Nitrogen and Phosphorus Promotes the Growth and Nutrient Accumulations of Cinnamomum camphora Container Seedlings

Effects of Nitrogen Forms on Root Morphology and Nitrogen Accumulation in Pinus tabuliformis carr. Seedlings under Exponential Fertilization

Different Phenotypic, Photosynthetic, and Physiological Responses to Flooding between Q. nuttallii and Q. palustris

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