The production of lithium (Li) increased by 256% in recent years due to unprecedented demands from technological industries. Intensive harvesting poses serious impacts on the sustainability of Li production. Herein, we address the global Li cycle and predict the peak production to reach 740000 million tons in 2041. Global Li accumulation in water bodies is mapped, and the consequences on human health of a wide range (<0.06–>20 mg L−1) of Li concentrations in drinking water are explored. The implications to human health of Li exposure remains unresolved and needs further investigation. There are still no recommendations on safe limits of Li in drinking water for humankind. In conclusion, there is an emergency call to health governing bodies, environmental protection agencies and scientific communities for urgent efforts on sustainable production of Li and identify their thresholds levels in drinking water to minimize the emerging consequences of Li on humans.
Pelanggaran siswa merupakan salah satu kebijakan sekolah yang bertujuan untuk mengurangi tingkat pelanggaran yang dilakukan oleh siswa. Masing-masing jenis pelanggaran mempunyai bobot atau nilai yang berbeda sesuai dengan tingkat besar kecilnya pelanggaran. Pada pengabdian diusulkan untuk membuat sebuah Pelatihan Penggunaan Aplikasi Bot Whatsapp Untuk Pelaporan Pelanggaran Siswa SMP Nurul Jadid. Tujuannya adalah untuk memberitahukan kepada orang tua siswa bahwa siswa yang berkaitan telah melakukan pelanggaran serta mempermudah kepala sekolah dalam memonitoring dan mengevaluasi pelanggaran siswa. Hasil dari pengabdian ini yaitu berupa Pelatihan Penggunaan Aplikasi Bot Whatsapp pelanggaran siswa serta berupa informasi pelanggaran siswa dan jenis pelanggaran yang sering dilanggar
Biochar (BC) applications have multiple impacts on crops’ nutrient availability, growth and yield depending on the feedstock type and pyrolysis conditions. Pot and field experiments were conducted to examine the effects of biochars (BCs) prepared from three different feedstocks, Acacia modesta wood biochar (AWB), Dalbergia sissoo wood biochar (DWB) and poultry litter biochar (PLB), on soil’s nutrient availability, uptake by wheat (Triticum aestivum) and sunflower (Helianthus annuus) crops and their yield attributes. All BCs were applied at the rate of 10t ha−1 in each treatment in both experiments, and pot and field trials were designed according to a two-factor factorial completely randomized design (CRD) and two-factor factorial randomized complete block design (RCBD), respectively. The concentration of soil NO3-N, NH4-N, Olsen P and extractable K increased by 98.5, 296, 228 and 47%, respectively, in the pot experiment with the application of PLB+polyhalite (PH) treatments. Similarly, in field experiments, NO3-N, NH4-N and Olsen P contents increased by 91, 268 and 156% under the PLB+PH treatment, respectively. However, in both experiments, soil’s microbial biomass phosphorus (MBP) was significantly higher after AWB+PH treatment, and the increments were 127 and 109% while microbial biomass nitrogen (MBN) contents were 16 and 14% higher than the control under DWB+PH and AWB+PH treatments, respectively, in the field experiment. Similarly, combined PLB+PH increased the total organic carbon (TOC) of soil by 193%. Moreover, PLB+PH co-applications with PH significantly increased sunflower grain yields by up to 58% and the harvest index by 45%. Overall, no negative impact with respect to BCs was observed on the soil’s nutrient content and plant growth. Hence, for immediate crop benefits and soil health, using nutrient biochar (PLB) alone or in combination with chemical fertilizers is recommended.
Aim Integration of chemical and organic fertilizers not only improves soil biological health and plant growth but also reduces costs of agricultural production, and hence, is an economically feasible approach to sustain plant growth in developing countries. Methods We performed a field experiment to evaluate the impact of poultry litter derived biochar (BC; 10 and 20 t ha-1) with and without chemical fertilizers (CF) on soil nutrient availability, microbial abundance, and soil enzymatic activity. Results Combined application of BC and CF significantly increased soil nutritional status and organic carbon (SOC), and these improvements were more prominent at higher BC level (20 tons ha-1), which increased soil microbial biomass carbon, nitrogen, and phosphorus by 27, 58, and 61%, respectively. Furthermore, BC20+CF treatment improved soil microbial abundances such as actinomycetes (24%), bacteria (70%), AMF (49%) and saprophytic fungi (38%). In terms of wheat growth and yield attributes, BC20+CF application enhanced spike length (55%), leaf area index (30%), tillers (12%), along with biological yield (26%) and grain yield (36%). BC20+CF application was also proved to be positively correlated with different soil enzymatic activities i.e., urease (24%), dehydrogenase (44%), and β-glucosidase (93%). Principal component analysis (PCA) analysis proved that co-application of BC @ 20 t ha-1 along with CF was the most efficient treatment in terms of improving soil nutrient status and microbial activities. Conclusions Hence, combined application of BC and CF could be an efficient tool to improve soil health, plant growth and reduce cost of agricultural production.
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