In-furrow Prilled Lime Trial

Investigatingthe use of granulated Calcium Oxide (Lime) precision placed in furrow duringseeding in an attempt to modify pH in the 1st season.

Dumbleyung, WA, 2017

Summary

This trial was established near Dumbleyung, WesternAustralia to investigated the use of micro fine granulated calciumcarbonate/oxide lime as an in furrow single season pH modifier. We appliedthree rates (75Kg, 100Kg and 150Kg/Ha) of lime and compared to the untreated.Site selection was poor and thus no result was achieved in this trial.

Methodology

Treatment List

 Tmt No.    Product    Rate (Kg/Ha)    1    Control    -    2    Lime    75    3    Lime    100    4    Lime    150  

Trial Layout

Experimental Design

 Design:    Commercial Demonstration    Replications:    2    Plot length:    20m    Plot Width:    4m  

Site, Crop and Application Details

Assessment Methods

 Assessment Date:    Assessment    26/07/2017    NDVI    03/08/2017    pH test    20/11/2017    Yield  

Data Analysis

All data analysis in this report was conducted in Microsoft Excel. Commercial demonstration work conducted by David Gray’s AgroAdvantage is not statistically sound but is sufficient to accurately represent our findings.

Results

NDVI

Soil Test

This soil test was taken from a treated furrow (150kg/Ha lime) and an untreated furrow to try and compare what effect the addition of lime had on the pH. The pH at this site is very alkaline from 30cm and below and slightly acidic at 15cm. From the soil test we can see that the addition of lime in this case had no effect on the pH. Due to a rushed start to AgroAdvantages trial program we did not spend the time on site selection and should have targeted highly acidic soils. This will be done in 2018.

Yield

Protein

Discussion

As we can see from the soil test, the pH at 30cm is relatively neutral and becomes alkaline at depth. The addition of lime had no effect on the pH and after running an ANOVA and t-test statistical analysis we found no statistically difference in the NDVI or yield data. In 2018 we plan to select a number of highly acidic sites and aim to do four replications in order to obtain better statistical data.

Appendices

Rainfall