Soil factors that contribute to the abundance and structure of the diazotrophic community and soybean growth, yield, and quality under biochar amendment

Wang, Weihua; Shi, Fenfen; Du, Jianqiang; Li, Liangbin; Bai, Ting; Xing, Xuguang

doi:10.1186/s40538-023-00429-0

Chemical and Biological Technologies in Agriculture

Table 3 Effects of biochar on fatty acid composition, and grain yield and quality of soybean

From: Soil factors that contribute to the abundance and structure of the diazotrophic community and soybean growth, yield, and quality under biochar amendment

years	Treatment	Fatty acid composition/%					Qualities/(g/100 g)				Yield
years	Treatment	Palmitic acid	Stearic acid	Oleic acid	Linoleic acid	Linolenic acid	Protein	Oil	K	P	Pods per plant	100-grain weight/g	Grain yield/(kg/hm²)
	B27	11.6 ± 0.26a	3.65 ± 0.06a	28.3 ± 0.23a	48.9 ± 1.05a	7.55 ± 0.15b	36.7 ± 0.5a	18.5 ± 0.50a	1.69 ± 0.03a	0.695 ± 0.01a	50.23 ± 2.26b	25.58 ± 0.69ab	2716.52 ± 18.21c
2020	B18	11.6 ± 0.25a	3.62 ± 0.12a	26.0 ± 0.14c	50.7 ± 1.13a	8.01 ± 0.21a	35.7 ± 0.4a	18.6 ± 0.60a	1.72 ± 0.07a	0.680 ± 0.01a	55.8 ± 2.12a	25.12 ± 0.41c	3006.78 ± 29.24b
	B9	11.7 ± 0.18a	3.59 ± 0.08a	26.4 ± 0.08b	50.4 ± 0.55a	7.93 ± 0.15ab	36.3 ± 0.7a	19.7 ± 0.50a	1.47 ± 0.06b	0.631 ± 0.02b	56.2 ± 3.33a	26.33 ± 0.42a	3885.46 ± 28.47a
	B0	11.5 ± 0.09a	3.60 ± 0.08a	26.6 ± 0.01b	50.4 ± 1.2a	7.91 ± 0.23ab	36.9 ± 0.5a	18.7 ± 0.60a	1.46 ± 0.04b	0.647 ± 0.02b	47.8 ± 3.29c	24.67 ± 0.31c	2695.36 ± 13.45c
	B27	10.3 ± 0.22a	3.73 ± 0.03ab	27.7 ± 0.04b	49.6 ± 0.4a	8.67 ± 0.20a	35.6 ± 0.6a	15.1 ± 0.20a	1.70 ± 0.05a	0.611 ± 0.01a	48.0 ± 3.06bc	24.56 ± 0.29c	2727.65 ± 17.75c
2021	B18	10.6 ± 0.13a	3.76 ± 0.06a	26.8 ± 0.02c	50.0 ± 1.0a	8.84 ± 0.04a	35.0 ± 0.3a	15.3 ± 0.80a	1.63 ± 0.04bc	0.582 ± 0.02bc	51.0 ± 2.65ab	24.27 ± 0.56c	3009.21 ± 36.42b
	B9	10.3 ± 0.16a	3.49 ± 0.08cd	28.0 ± 0.03a	49.4 ± 0.6a	8.81 ± 0.13a	35.0 ± 0.4a	14.5 ± 0.80a	1.67 ± 0.04ab	0.602 ± 0.01ab	51.8 ± 4.32a	27.64 ± 0.52a	4137.87. ± 34.34a
	B0	10.4 ± 0.17a	3.58 ± 0.09c	27.9 ± 0.02 ab	49.3 ± 0.7a	8.82 ± 0.17a	35.3 ± 0.3a	15.5 ± 0.64a	1.58 ± 0.09d	0.574 ± 0.02c	44.2 ± 3.51c	26.12 ± 0.29b	2728.6 ± 27.61c

B27, 45 t hm⁻² biochar addition; B18, 30 t hm⁻² biochar addition; B9, 15 t hm⁻² biochar addition, B0, no biochar addition. θ, water content; γ_d, soil bulk density; TOC, total organic carbon; AP, available phosphorus; AK, available potassium; TN, total nitrogen. Values are means ± standard deviation. Different lowercase letters within columns indicate significant (p < .05) differences among treatments

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