Biochar and Nitrogen Fertilizer Promote Alfalfa Yield by Regulating Root Development, Osmoregulatory Substances and Improve Soil Physicochemical Properties

Agriculture, Journal Year: 2025, Volume and Issue: 15(3), P. 239 - 239

Published: Jan. 23, 2025

In artificial grassland systems, the extensive use of inorganic nitrogen (N) fertilizers has greatly enhanced yields but also caused significant environmental issues. The combined biochar and N fertilizer is recognized as an effective sustainable approach to reducing risks while boosting crop production. However, specific impacts on alfalfa yield, soil properties, root morphology remain unclear. This study examined effects three application rates (0, 10, 20 t hm−2) four levels 47, 94, 188 kg hm−2 yr−1) growth characteristics. Results revealed that notably promoted development increased osmoregulatory substance content. It biomass by improving nodule count, neck bud formation, diameter, reduced numbers. Biochar bulk density 0.8–10.5%, with further increasing available phosphorus potassium levels. Additionally, their significantly elevated nitrate ammonium concentrations. Overall, synergy enhances yield fostering better fertility.

Language: Английский

---

De-ashed-biochar slow-release N fertilizer increased NUE in alkaline calcareous soils under wheat and maize crops

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 5, 2025

Recently biochar has widely been reported as carrier of SRFs. However, the performance SRFs synthesized from pristine is still low and could not achieve significant benefits compared to conventional N fertilizers. To overcome this limitation research gap, BSRFs were using modified / de-ashed N-carrier. We hypothesized that would NUE especially in alkaline calcareous soils for whom there no specific SRF exist previously. In study, efficacy BSRF formulated with 1:1 mass ratio urea was CU CSRF improving under wheat (Triticum aestivum L.) maize (Zea mays cropping system two different textured soils. The results showed CSRF, addition significantly increased retention soil mineral-N (NH4+-N, NO3--N) which, consequently, enhanced crops' N-uptake up 23.71% 26.55% maize. It further observed SOC contents 50.79% 47.61% at harvest. CEC 32.95% 27.73% maize, CU. Eventually, grain yield by 12.04% 40.44%, while 21.06% 45.56%, respectively. This study concludes had a stronger yield-increasing effect than alone attributing crop uptake also found strong candidate formulate new improved performance.

Language: Английский

---

US grass-fed beef is as carbon intensive as industrial beef and ≈10-fold more intensive than common protein-dense alternatives

Proceedings of the National Academy of Sciences, Journal Year: 2025, Volume and Issue: 122(12)

Published: March 17, 2025

The high resource intensity of industrial beef in high-income economies has prompted growing interest alternative, potentially lower environmental impact production pathways. Of those, grass feeding is promoted by some as one such but rigorous quantification this claim required. Motivated to bridge knowledge gap, we integrate empirical evidence with a model based on authoritative equations governing cattle performance quantify the greenhouse gas emissions producing grass-fed beef. Because geographical specificity and dependence agricultural are key, widely varied herds, from extensive operations semiarid, marginal rangelands partially industrial, intensive ones lusher, more accommodating settings. We find that per kg protein even most efficient 10 25% higher than those US 3- over 40-fold wide range plant animal alternatives. Soil sequestration enhancement rangeland grazing reduces these 280–390 180–290 CO 2eq (kg protein) −1 , still somewhat above beef’s 180 220 well nonbeef alternatives’ 70 . These differences prove robust across broad set combinations operation types, management practices, ration qualities. Consequently, maximal credit for putative enhancement, no less carbon beef, severalfold

Language: Английский

---

Carbon Balance in Soils under Conifers and Broadleaved Species within La Sierra, Dominican Republic

Forests, Journal Year: 2024, Volume and Issue: 15(9), P. 1645 - 1645

Published: Sept. 18, 2024

Our research assesses the effects of four forest species, namely, Swietenia macrophylla King, mahagoni (L.) Jack., Pinus occidentalis Swartz, and caribaea Morelet var. Caribaea, on soil litter organic carbon (C) stocks, C dioxide equivalent balance (BCO2 Eq.) diurnal, periodic dynamics beneath these species. Reforestation projects in study region cover 1200, 543, 770, 1152 hectares, respectively, with species being most relevant reforestation within country. To determine BCO2 Eq. per unit area, we compared greenhouse gas (GHG) fluxes (CO2), methane (CH4), nitrous oxide (N2O) expressed as CO2 units stocks found mineral to a depth 30 cm litter. In measurement periods over 18 months, conducted field measurements sixteen stands, results indicate that S. emitted lowest Eq., while released highest amount into atmosphere. At end from soils was 299.70 metric tons ha−1 year−1, for P. occidentalis, caribaea, mahagoni, corresponding quantities were 103.64, 146.41, 72.34, respectively. All showed general upward pattern respiration September 2020 March 2022. The average flux rates atmosphere approximately 65.4, 51.1, 75.9 percent higher respective mahagoni.

Language: Английский

---

Diagnostic species are crucial for the functioning of plant associations in inland salt marshes

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 18, 2024

Language: Английский

---