Biochar combined with organic and inorganic fertilizers promoted the rapeseed nutrient uptake and improved the purple soil quality

Abstract

Biochar is a kind of organic matter that can be added into soil to improve soil quality. To study the effect of biochar combined with organic and inorganic fertilizers on rapeseed growth and purple soil fertility and microbial community, a completely randomized block design was designed with three levels of biochar (B0: no biochar, B1: low-rate biochar, B2: high-rate biochar); two levels of inorganic fertilizers (F1: low-rate inorganic fertilizer; F2: high-rate inorganic fertilizer); and two levels of organic fertilizers (M1: no organic fertilizer; M2: with organic fertilizer). All combinations were repeated three times. The combined application of biochar and organic and inorganic fertilizers could improve soil pH, soil fertility and soil microbial community richness: The pH of B1F2M1 increased 0.41 compared with the control, the nitrogen, phosphorus and potassium content increased by 103.95, 117.88, and 99.05%. Meanwhile, soil microbial community richness was also improved. Our research showed that biochar could promote the Nutrient Uptake of rapeseed, and the combined application of biochar with organic and inorganic fertilizers could improve soil fertility and increase microbial diversity. Low-rate biochar combined with organic fertilizer and low-rate inorganic fertilizer was the most suitable application mode in rapeseed production in purple soil area of Southwest China.

Partial substitution of chemical fertilizer by organic fertilizer increases yield, quality and nitrogen utilization of Dioscorea polystachya

“…Optimal accumulation and distribution of crop dry matter play a pivotal role in achieving high-quality and high-yield yam production. The combined application of organic and chemical fertilizers proves advantageous for optimizing water and nutrient conditions, promoting overall dry matter accumulation throughout the crop’s growth cycle, as well as facilitating dry matter translocation to the stems [ 28 , 29 ].…”

Biochar and organic fertilizer drive the bacterial community to improve the productivity and quality of Sophora tonkinensis in cadmium-contaminated soil

“…In practice, biochar is commonly used with supplemental nutrients, such as organic fertilizer, to enhance soil quality, mitigate heavy metal stress, and increase crop productivity ( Muhammad et al, 2017 ; Saeed et al, 2021 ). Notably, this fertilization method is often accompanied by changes in the soil bacterial community ( Wei et al, 2020 ; Liu et al, 2022 ; Wen et al, 2023 ). However, to date, the alterations and effects of the soil bacterial community in most soil remediation processes are still poorly understood.…”

Examining the Effect of Combined Biochar and Lime Rates on Selected Soil Physicochemical Properties of Acid Soils in Gimbi District, Western Ethiopia

“…Te soils in western Ethiopia region have a high potential for producing a variety of crops; however, soil acidity is the main problem that reduces soil fertility and crop output [7,11]. Imbalanced agricultural input use and high levels of nutrient leakage are the cause of deteriorating soil fertility [5,12,13]. Increasing agricultural yield is feasible when using the only appropriate soil fertility management techniques [1,14,15].…”

“…Various scholars have long argued on the reduction of soil acidity in uses of lime and biochar in the agricultural systems of developed nations [12,30,40,41]. Te benefts of this biochar are not widely recognized in tropical countries, especially in Western Ethiopia.…”