Effects of Nitrogen and Phosphorus Fertilization on Photosynthetic Properties of Leaves and Agronomic Characters of Alfalfa over Three Consecutive Years

Zhao, Jiantao; Huang, Rongzheng; Yang, Kang; Ma, Chunhui; Zhang, Qianbing

doi:10.3390/agriculture12081187

Cited by 7 publications

(8 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A schematic representation drawn from this present work illustrates how the N application might have mediated the changes to improve the overall performance of peppermint cultivars ( Figure 16 ). The results on the improvement in size and density of stomata and trichomes due to N application corroborate with the findings of [ 36 ] on Tagetes minuta L. and [ 37 ] on Medicago sativa L.…”

Section: Discussionsupporting

confidence: 87%

Nitrogen Supplementation Modulates Morphological, Biochemical, Yield and Quality Attributes of Peppermint

Parrey

Shah

Fayaz

et al. 2023

Plants

View full text Add to dashboard Cite

Due to the rising demand for essential oil in the world market, peppermint has gained an important status among aromatic and medicinal plants. It becomes imperative to optimize its performance in terms of the growth, physiological functioning and biosynthesis of specialized metabolites. A factorial randomized pot experiment was performed using three peppermint cultivars (Kukrail, Pranjal and Tushar) and five levels of leaf-applied nitrogen (N), viz. 0 (control), 0.5, 1.0, 1.5 and 2%. The phenological features, biochemical parameters, viability of root cells, stomatal and trichome behavior were assessed at 100 days after transplanting (DAT). The yield-related parameters, viz., herbage yield, essential oil content, menthol content and yield were studied at 120 DAT. The results revealed that increasing the N doses up to 1.5% enhanced all the studied parameters of peppermint, which thereafter (at the dose above 1.5% N) decreased. The variation pattern of the studied parameters was “low-high-low”. Cultivar Kukrail surpassed the two other cultivars Tushar and Pranjal. Among the foliar sprays, the application of 1.5% N increased chlorophyll content and net photosynthetic rate in all three cultivars. Moreover, the essential oil (EO), EO yield and menthol yield of the plant were also increased linearly in all three cultivars as compared with their control plants. Nitrogen application enhanced the trichome size and density of the plants, as revealed through scanning electron microscopy. Furthermore, from the GC-MS studies, the EO content in the studied cultivars increased, particularly in the case of menthol, with the N application. It may be concluded that two sprays of N (1.5%) at appropriate growth stages could be beneficial for improving morphological, physio biochemical and yield attributes of peppermint.

show abstract

Section: Discussionsupporting

confidence: 87%

Nitrogen Supplementation Modulates Morphological, Biochemical, Yield and Quality Attributes of Peppermint

Parrey

Shah

Fayaz

et al. 2023

Plants

View full text Add to dashboard Cite

show abstract

“…Chlorophyll content exerts a direct influence on photosynthesis and the generation of photosynthetic products [28]. Several factors affect photosynthesis, with nitrogen (N), phosphorus (P), and potassium (K) playing pivotal roles [29]. Furthermore, previous studies have demonstrated a positive correlation between nitrogen concentrations and the photosynthetic carbon assimilation rate of leaves, thereby influencing the plant's photosynthetic capacity [30,31].…”

Section: Effects On Photosynthetic Pigmentsmentioning

confidence: 99%

The Effects of Planting Density and Nitrogen Application on the Growth Quality of Alfalfa Forage in Saline Soils

Liu,

Lu,

Zhu

et al. 2024

Agriculture

View full text Add to dashboard Cite

Soil salinization has become one of the major abiotic stresses limiting agricultural production globally. The full utilization of coastal saline-alkali land is of great significance for agricultural development. Among them, fertilizer management and planting density are crucial for promoting crop growth and productivity in saline soils. Field experiments were conducted to study the effects of different nitrogen application rates and planting densities on the growth, yield, and quality of alfalfa. Using alfalfa variety WL919 as the experimental material, three seeding rates of 15.0 kg·ha−1 (D1), 30.0 kg·ha−1 (D2), and 45.0 kg·ha−1 (D3) as well as three nitrogen application rates of 150.0 kg·ha−1 (N1), 225.0 kg·ha−1 (N2), and 300.0 kg·ha−1 (N3) were set. The results showed that under the same density, different nitrogen application rates had a positive impact on the agronomic traits and yield of alfalfa on saline-alkali land. Physiological and biochemical properties (chlorophyll and sucrose) increased with increasing nitrogen application, and (starch) increased initially and then decreased with increasing nitrogen application. Forage quality attributes (crude protein and crude ash) had a significant impact, while crude fat had no significant effect. Under the same nitrogen application, the yield of alfalfa increased with increasing density but then decreased after reaching a peak, while other traits initially increased and then decreased. In conclusion, the nitrogen fertilizer was superior in promoting alfalfa growth, biomass yield, and forage yield, while planting density was more suitable at D2. Although both D2N2 and D2N3 treatments were superior to others, considering economic benefits and environmental factors, it is recommended to use D2N2 as the appropriate treatment.

show abstract

“…These rhizobia can convert atmospheric N into plant available forms. However, despite the N fixing capabilities of these rhizobacteria, alfalfa may experiences N deficiency, due to inadequate soil nutrients ( Zielewicz et al., 2023 ) salt stress ( Wan et al., 2023 ), drought ( Liu et al., 2018 ), and other factors, which ultimately reduce plant growth, yield, and quality ( Zhao et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of combined nitrogen and phosphorus application on soil phosphorus fractions in alfalfa (Medicago sativa L.) production in China

Yang,

Li,

Sun

et al. 2024

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Nitrogen (N) and phosphorus (P) fertilizers change the morphological structure and effectiveness of P in the soil, which in turn affects crop growth, yield, and quality. However, the effects and mechanism of combined N and P application on the content of P fractions and the transformation of effective forms in alfalfa (Medicago sativa L.) production is unclear. This experiment was conducted with four levels of N: 0 (N0), 60 (N1), 120 (N2) and 180 kg·ha-1 (N3); and two levels of P (P2O5): 0 (P0) and 100 kg·ha-1 (P1). The results indicated that, under the same N level, P application significantly increased soil total N, and total P, available P, and content of various forms of inorganic P when compared to no P application, while decreasing the content of various forms of organic P and pH value. In general, under P0 conditions, soil total N content tended to increase with increasing N application, while total P, available P content, pH, inorganic P content in all forms, and organic P content in all forms showed a decreasing trend. When compared to no N application, insoluble P (Fe-P, O-P, Ca10-P) of the N application treatments was reduced 2.80 - 22.72, 2.96 - 20.42, and 5.54 - 20.11%, respectively. Under P1 conditions, soil total N and O-P tended to increase with increasing N application, while, pH, Ca2-P, Al-P, Fe-P, Ca10-P, and organic P content of each form tended to decrease. Total P, available P, and labile organic P (LOP) of N application reduced 0.34 - 8.58, 4.76 - 19.38, and 6.27 - 14.93%, respectively, when compared to no application. Nitrogen fertilization reduced the soil Ca2-P ratio, while P fertilization reduced soil Fe-P, moderately resistant organic P (MROP), and highly resistant P (HROP) ratios, and combined N and P elevated the Ca8-P to LOP ratio. The results of redundancy analysis showed that soil total N content, available P content, and pH were the key factors affecting the conversion of P fractions in the soil. Nitrogen and P reduced the proportion of soil insoluble P, promoted the activation of soil organic P, resulting in accumulation of slow-acting P in the soil, thereby improving the efficiency of soil P in alfalfa production.

show abstract

Effects of Nitrogen and Phosphorus Fertilization on Photosynthetic Properties of Leaves and Agronomic Characters of Alfalfa over Three Consecutive Years

Cited by 7 publications

References 43 publications

Nitrogen Supplementation Modulates Morphological, Biochemical, Yield and Quality Attributes of Peppermint

Nitrogen Supplementation Modulates Morphological, Biochemical, Yield and Quality Attributes of Peppermint

The Effects of Planting Density and Nitrogen Application on the Growth Quality of Alfalfa Forage in Saline Soils

Effects of combined nitrogen and phosphorus application on soil phosphorus fractions in alfalfa (Medicago sativa L.) production in China

Contact Info

Product

Resources

About