Effects of N addition on soil exchangeable cations in a young<i>Keteleeria fortunei</i>var.<i>cyclolepis</i>forest

Yong, Wang; Huang, Xingguo; Jiang, Yi; Liu, Xiongsheng; Zhu, Fan

doi:10.1080/11956860.2019.1590952

Cited by 1 publication

(3 citation statements)

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“…A common indicator for determining the availability of most plant nutrients is the measurement of the cation exchange capacity (CEC) in the soil [ 12 ]. The cation exchange capacity, or exchange rate, describes the number of cations in the soil solution that are exchangeable, and therefore available for the uptake by plant roots.…”

Section: Introductionmentioning

confidence: 99%

“…Plants extract the positively charged cations from the soil solution by exchanging them for positively charged hydrogen (H + ). Soil exchangeable base cations (BCs), mainly including calcium (Ca 2+ ), magnesium (Mg 2+ ), potassium (K + ), and sodium (Na + ), which are essential cations for plant growth and soil ecosystem stability [ 12 , 13 ]. Cations, such as Mg 2+ , are essential for photosynthesis and energy storage, and they are involved in the regulation of plant physiology and biochemistry [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…The main concern is the damaging effect of excessive nitrogen loads in many contrasting ecosystems and toxicity to plant growth [ 30 ]. Many previous studies have looked at the effects of N fertilization on plant growth [ 2 , 5 , 9 ] or exchangeable BCs [ 12 , 13 , 20 ] in soils. However, the effects of N application on soil BCs and plant growth, and the relationship between soil BCs and plant growth are still unclear.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Exponential N Application on Soil Exchangeable Base Cations and the Growth and Nutrient Contents of Clonal Chinese Fir Seedlings

Wang¹,

Wang

Zhang³

et al. 2023

Plants

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Nitrogen (N) is an essential macronutrient for plant function and growth and a key component of amino acids, which form the building blocks of plant proteins and enzymes. However, misuse and overuse of N can have many negative impacts on the ecosystem, such as reducing soil exchangeable base cations (BCs) and causing soil acidification. In this research, we evaluated clonal Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) seedlings grown with exponentially increasing N fertilization (0, 0.5, 1, 2 g N seedling−1) for a 100-day trial in a greenhouse. The growth of seedlings, their nutrient contents, and soil exchangeable cations were measured. We found that N addition significantly increased plant growth and N content but decreased phosphorous (P) and potassium (K) contents in plant seedlings. The high nitrogen (2 g N seedling−1) treated seedlings showed a negative effect on growth, indicating that excessive nitrogen application caused damage to the seedlings. Soil pH, soil exchangeable base cations (BCs), soil total exchangeable bases (TEB), soil cation exchange capacity (CEC), and soil base saturation (BS) significantly decreased following N application. Our results implied that exponential fertilization resulted in soil acidification and degradation of soil capacity for supplying nutrient cations to the soil solution for plant uptake. In addition, the analysis of plants and BCs revealed that Na+ is an important base cation for BCs and for plant growth in nitrogen-induced acidified soils. Our results provide scientific insights for nitrogen application in seedling cultivation in soils and for further studies on the relationship between BCs and plant growth to result in high-quality seedlings while minimizing fertilizer input and mitigating potential soil pollution.

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Section: Introductionmentioning

confidence: 99%