Narrative Agronomic Field Log — Cellulosic Biofuel Diversity Experiment

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

A narrative of agronomic activities on the Cellulosic Biofuels Diversity Experiment.

This datatable is part of the Cellulosic Biofuels Diversity Experiment dataset.

This dataset contains data from the Cellulosic Biofuels Diversity Experiment established in 2008 at the LTER Main Site and consisting of 12 different cropping systems (CE1-CE12) that vary in species makeup and nitrogen input. Treatments include continuous corn, corn-soybean rotations, two varieties of switchgrass fertilized differently, a C3 – C4 grass mix, and prairie grasses native to Michigan with different numbers of species. See the plot map for treatment details and Related Tables for seed species and planting details. Treatment plots are 9 × 27 m replicated in each of 4 randomized blocks. Plots are harvested annually in the fall and crop yields are recorded.


Experiment: Cellulosic Biofuel Diversity Experiment
Data available from: September 2006 to November 2019
Dataset: KBS083
Datatable ID: KBS083-002.58
Repository link:
Related Tables:
Last Updated 2024-02-16
Variate Description Units
Obs date observation date
Comment description of the agronomic practice
Author author of the observation

Data Excerpt

obs_date comment author
2023-11-30 Harvested corn in the CE study. CE1 plots (108, 202, 304, 401) and CE3 plots (105, 207, 301, 403). For each plot two rows of corn (5' wide) per pass was harvested for yield using the Kincaid plot combine. Total number of rows harvested in each plot was 4. Weight of plots was determined by using the on-board Mirus system, and moisture was taken with the FSC Dickey John. Remaining of corn in plots was harvested the same day. Equipment Used: Kincaid plot combine and white/green grain truck. Equipment Used: JD S660 combine and white/green grain truck. Jarrod Rhoades
2023-11-03 Harvested LTER Cellulsic Biofuels Experiment (CE Study), Treatments C4-C12 (all replications). Harvested the biomass crops i.e. switchgrass, C3 and C4 mix and prairie grasses mixes. Harvested with JD 7330 tractor using the 7.5 ft wide Kemper head and Wintersteiger biomass harvester weighing system. The middle 7.5 ft was harvested out of the middle of each plot. Plot weight was obtained from the on-board Mirus computer weighing system, by Juniper Systems. Cutting height of plant stubble was approximately 6 inches. Grab samples from each rep were placed in paper bags weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Started harvest in south west corner (C11:plot 101) and harvested in straight lines headed North, working towards the East. Kemper head chute came out of Wintersteiger receptacle in plot 203 CE4. Kemper head lower chute jammed with biomass in plot 109 CE12, this resulted in the loss of most of the harvest sample. To compensate half of the head's width (approx. 3.75') was harvested on either side of the original pass. Ethan Rocklin
2023-08-31 Herbicide application to GLBRC G2 (reps 3, 2, 5, 4, 1), Bait Crop area (soybean), and brown house field, LTER CE Study soybeans CE2 (112, 210, 312, 402), and unplanted area of the Lysimeter field. RoundUp PowerMax 3 at 38.5 oz per acre and Ammonium Sulfate at 3.4 lbs per acre were applied post-emergence to control grass weeds. Rate of spray was 20gal/acre on JD rate controller. REI is 4 hours, safe re-entry on Thursday 8/31/23 at 8:00 PM Weather at 10:50 am: Temperature: 63.1°F Wind Direction: East Wind Velocity (3m average): 4.31 mph Relative Humidity: 61.2% Weather at 4:00 pm: Temperature: 73.6°F Wind Direction: East Wind Velocity (3m average): 2.43 mph Relative Humidity: 30.8% Ethan Rocklin
2023-07-06 Sprayed G2 plots (reps 3, 2, 1, 4, 5), Bait Crop and CE Study CE2 (112, 210, 312, 402) plots with Enlist One and Roundup. REI 48 Hours Safe Re-entry on 7/8 at 5:30 PM Tank mix of Enlist One (2-4D) at 2 pints per acre and Roundup PowerMax 3 (Glyphosate) at 22 oz per acre were applied. Ethan Rocklin
2023-07-05 T6 (4, 3, 2, 1, 5, 6) plots and CE study switchgrass plots CE4 and CE6 (110, 203, 302, 404, 111, 204, 310, 406) were fertilized with 28% U.A.N. nitrogen fertilizer at 16.7 Gallons per Acre, applying 50 lb N per Acre. Bromegrass and unfertilized mircoplots in Northwest corner of plots were avoided. Weather Conditions at 4:25 pm: Partly Cloudy 87.4°F 6.51 mph Southwest wind 49.1% RH Ethan Rocklin
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