#: locale=en ## Media ### Description photo_7710CE54_6993_D74D_41B0_5060E794B805.description = Both the control and the treatment blocks started with high organic carbon levels in year 1. \ Soil carbon reduced from year 1 to year 2 the least in treatment 4 (-0.1%; cover crop with minimum till) and the most in treatment 1 (-2%; composting with minimum till), demonstrating the importance of ground cover and avoiding bare fallow between cash crops. \ Treatment 4 with the buckwheat and millet planted as a cover crop which was minimum tilled outperformed the control which had a slightly larger reduction in soil carbon (-0.5%) and was similar to the reference area (-0.2%; undisturbed and uncropped pasture) photo_7710CE54_6993_D74D_41B0_5060E794B805.description = Both the control and the treatment blocks started with high organic carbon levels in year 1. \ Soil carbon reduced from year 1 to year 2 the least in treatment 4 (-0.1%; cover crop with minimum till) and the most in treatment 1 (-2%; composting with minimum till), demonstrating the importance of ground cover and avoiding bare fallow between cash crops. \ Treatment 4 with the buckwheat and millet planted as a cover crop which was minimum tilled outperformed the control which had a slightly larger reduction in soil carbon (-0.5%) and was similar to the reference area (-0.2%; undisturbed and uncropped pasture) photo_7438403F_6993_CB3B_41D4_7A2DBCED334A.description = Soil nitrogen levels significantly increased in the second year for the control and treatments which received one tonne mono-ammonium phosphate (MAP) (10-21.9-0-1.5) and di-ammonium phosphate (DAP) (18-46-0). Units of nitrogen applied were calculated to be approximately 280kg/ha. \ Although the cover crop biomass was not measured, treatment 4 seemed to return an excess amount of nitrogen to the soil post-cultivation to that applied. \ All other treatments measured lower units of nitrogen than that applied, however, this could be influenced by the rate of breakdown (Figure 6). \ The buckwheat was terminated in late February and the soil test was taken one month later in late March 2024. photo_7438403F_6993_CB3B_41D4_7A2DBCED334A.description = Soil nitrogen levels significantly increased in the second year for the control and treatments which received one tonne mono-ammonium phosphate (MAP) (10-21.9-0-1.5) and di-ammonium phosphate (DAP) (18-46-0). Units of nitrogen applied were calculated to be approximately 280kg/ha. \ Although the cover crop biomass was not measured, treatment 4 seemed to return an excess amount of nitrogen to the soil post-cultivation to that applied. \ All other treatments measured lower units of nitrogen than that applied, however, this could be influenced by the rate of breakdown (Figure 6). \ The buckwheat was terminated in late February and the soil test was taken one month later in late March 2024. album_76578C2C_6993_FADD_41D7_751207EBCB23_0.description = • Very good labile carbon in the areas with the warm season cover crops (Japanese millet-vetch mix and buckwheat) combined with minimum till \ • Good labile carbon in the areas with cover crops and cultivation, in both the trial and control that included grower standard cereal rye \ • Poor-average labile carbon in the areas with composting and cultivation, or minimum till, without cover crops. ### Subtitle panorama_C68B2335_E381_1732_41B8_62588B2461E4.subtitle = Leek - 6 weeks establishment model_E9859473_E417_D20E_41E9_C505E3919FE1.subtitle = Leek - 6 weeks establishment panorama_C7B61BB1_E387_1732_41D3_54F6A7B4BC08.subtitle = Leek - 6 weeks establishment model_E8219AE0_E414_D60A_41E0_A610FE734C89.subtitle = Leek - 6 weeks establishment panorama_C7A56586_E387_33D1_41C7_DD3A1AE2A72C.subtitle = Leek - 6 weeks establishment model_F67CB7CA_E878_827A_41C5_8417DA15652D.subtitle = Leek - 6 weeks establishment panorama_C0497823_E381_10D6_41DF_777F177CB04F.subtitle = Leek - 6 weeks establishment model_FA5072A0_E808_8226_41DE_984E24761EA8.subtitle = Leek - 6 weeks establishment video_3C5F1CC8_6AB3_AD8F_41D1_A329851B2935.subtitle = with Carl Larsen, Soilwealth ICP ### Title album_76578C2C_6993_FADD_41D7_751207EBCB23_0.label = Labile carbon field test results with soil health ‘traffic light’ indicators video_3C5F1CC8_6AB3_AD8F_41D1_A329851B2935.label = Maintaining soil carbon photo_7710CE54_6993_D74D_41B0_5060E794B805.label = Organic carbon percentage photo_7710CE54_6993_D74D_41B0_5060E794B805.label = Organic carbon percentage album_76578C2C_6993_FADD_41D7_751207EBCB23.label = Photo Album fig3 photo_7438403F_6993_CB3B_41D4_7A2DBCED334A.label = Total nitrogen (kg/ha) photo_7438403F_6993_CB3B_41D4_7A2DBCED334A.label = Total nitrogen (kg/ha) model_E9859473_E417_D20E_41E9_C505E3919FE1.label = Treatment 1: Grower standard practice, composting, minimum till, Japanese millet cover crop panorama_C7A56586_E387_33D1_41C7_DD3A1AE2A72C.label = Treatment 1: Grower standard practice, composting, minimum till, Japanese millet cover crop model_E8219AE0_E414_D60A_41E0_A610FE734C89.label = Treatment 2: Grower standard practice, cover crop, cultivation, Buckwheat-vetch mix and Japanese millet cover crops panorama_C7B61BB1_E387_1732_41D3_54F6A7B4BC08.label = Treatment 2: Grower standard practice, cover crop, cultivation, Buckwheat-vetch mix and Japanese millet cover crops model_F67CB7CA_E878_827A_41C5_8417DA15652D.label = Treatment 3: Grower standard practice, composting, cultivation panorama_C68B2335_E381_1732_41B8_62588B2461E4.label = Treatment 3: Grower standard practice, composting, cultivation panorama_C0497823_E381_10D6_41DF_777F177CB04F.label = Treatment 4: Grower standard practice, cover crop, minimum till, Buckwheat-vetch mix and Japanese millet cover crops model_FA5072A0_E808_8226_41DE_984E24761EA8.label = Treatment 4: Grower standard practice, cover crop, minimum till, Buckwheat-vetch mix and Japanese millet cover crops ### Video videolevel_E51CDECB_FBAC_CFEC_41DF_D13828CDD0A8.url = media/video_3C5F1CC8_6AB3_AD8F_41D1_A329851B2935_en.mp4 videolevel_E51CDECB_FBAC_CFEC_41DF_D13828CDD0A8.posterURL = media/video_3C5F1CC8_6AB3_AD8F_41D1_A329851B2935_poster_en.jpg ### Video Subtitles ## Skin ### Button Button_76DB4BC8_6990_5D46_41BD_C7712C073738.label = Labile Carbon Button_76DB4BC8_6990_5D46_41BD_C7712C073738_mobile.label = Labile Carbon ### Dropdown DropDown_C6E8949B_E709_337C_41E9_338FCA3AF275.label = Menu ### Image Image_FC34C818_E73A_F37C_41E3_85B9DCC264AF.url = skin/Image_FC34C818_E73A_F37C_41E3_85B9DCC264AF_en.png ### Multiline Text HTMLText_54662E03_6B90_76CB_41D7_0D484134266A_mobile.html =
What does labile carbon tell us?


Labile carbon is the carbon most readily available as a carbon and energy source to microorganisms.
While changes in practice may not demonstrate changes in total soil carbon, they may increase labile carbon, making it a better indicator of improved soil quality. Labile carbon is often a good ‘leading indicator’ of soil biological activity.
The labile carbon field test is useful for comparing management practices that influence organic carbon. A labile carbon test was undertaken across the different treatments within the trial and compared to the control area.



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What does labile carbon tell us?


Labile carbon is the carbon most readily available as a carbon and energy source to microorganisms.
While changes in practice may not demonstrate changes in total soil carbon, they may increase labile carbon, making it a better indicator of improved soil quality. Labile carbon is often a good ‘leading indicator’ of soil biological activity.
The labile carbon field test is useful for comparing management practices that influence organic carbon. A labile carbon test was undertaken across the different treatments within the trial and compared to the control area.




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{{viewer.Viewer info 1.photo.description}}
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## Tour ### Description ### Title tour.name = Soil Wealth ICP leeks ## VR Menu ### Text Menu_E4699B89_FBAF_566C_417D_24EC2D730818.label = Media MenuItem_E455EBCF_FBAF_55E3_41C5_7D56AA336594.label = Treatment 1: Grower standard practice, composting, minimum till, Japanese millet cover crop MenuItem_E4551BCF_FBAF_55E3_41CB_00DE395A9914.label = Treatment 1: Grower standard practice, composting, minimum till, Japanese millet cover crop MenuItem_E4553BCF_FBAF_55E3_41EC_D23DFEE1156F.label = Treatment 2: Grower standard practice, cover crop, cultivation, Buckwheat-vetch mix and Japanese millet cover crops MenuItem_E455FBCF_FBAF_55E3_41D9_63832D526948.label = Treatment 2: Grower standard practice, cover crop, cultivation, Buckwheat-vetch mix and Japanese millet cover crops MenuItem_E4554BCF_FBAF_55E3_41E5_7717F54FD2CD.label = Treatment 3: Grower standard practice, composting, cultivation MenuItem_E4550BCF_FBAF_55E3_41D9_93B5EFB03EFA.label = Treatment 3: Grower standard practice, composting, cultivation MenuItem_E455CBCF_FBAF_55E3_41D4_0511BDC229BD.label = Treatment 4: Grower standard practice, cover crop, minimum till, Buckwheat-vetch mix and Japanese millet cover crops MenuItem_E4555BCF_FBAF_55E3_419E_725D88DB8ECC.label = Treatment 4: Grower standard practice, cover crop, minimum till, Buckwheat-vetch mix and Japanese millet cover crops