Mogro USER MANUAL
MoGro USER MANUAL
Sanele Khambule
October 2016
1. Introduction
This document helps guide the user to use the MoGro DSP to view the cane and sucrose yield increments for a particular homogenous climate zone, irrigation status, crop cycle, TAM, harvest month and the users specific management factor.
It is important for a user to note that although the data shown has been generated by running the DSSAT v4.5 Canegro Sugarcane Plant Module, no actually model is run when the user clicks on the “Show data” button. All the data has been pre-generated using past climate data for each homogenous climate zone.
The document takes the form of a tutorial where the user will be guided through choosing the correct options from the drop-downs to view the correct growth increments for a crop that is planted with no irrigation(Dry) and a fully irrigated crop(100% irr). The document will also show the user how to read and interpret the graphs and tables of the cane and sucrose yield increments.
2. Viewing Increments
2.1. Description of input options
a b c d e f g
- Zone:
This is the climate zone where your farm/field is located, if you do not know your climate zone you can click on the button labelled “Select zone from map” to view a map of the South African sugar industry and click on the demarcated area closest to the location of your farm/field.
- Irrigation status:
This is the irrigation status of your farm/field, select “Dry” for a farm/field that is not irrigated and select “100% irr” for a fully irrigated farm/field. For varied percentages of supplemental irrigation options of 80%, 50% and 20% irrigation levels are available.
- Crop Cycle:
This is the crop cycle of your farm, select the age your cane will be on the month you are planning to harvest it (in months). It is important to note this value is not the current age of your crop but the age your crop will be on harvest.
- TAM:
This is the maximum water holding capacity of the soil in your farm/field, available options are based on the most dominant water holding capacity values in the South African sugar industry. If the exact value of your soil TAM is not available choose the value closest to the TAM of the soil in your farm/field.
- Harvest month:
This is the month when your current crop will be harvested, available options are based on the South African sugar industry milling season.
- Management factor:
This is a measure of how well you as a farm management follow the best management practices when it comes to planting, looking after your crop and harvesting your crop.
- Harvest season:
This is the season in which you plan to harvest your crop. Each season start usually starts from the month of March to March the following year, this varies across regions and will depend on the expected cane production for the region in a given year.
2.2. Examples
2.2.1. Example of viewing dry land (no irrigation) growth increments
2.2.1.1. Inputs
a. Select zone 13: Mtubatuba from the ‘Zone’ dropdown list
b. Select “Dry” from the “Irrigation Status” dropdown list
c. Select 12 from “Crop Cycle(months)” dropdown list
d. Select 120 from “TAM(mm)” dropdown list
e. Select May from “Harvest Month” dropdown list
f. Select “0.7: Good” from “Management Factor” dropdown list
g. Select “2017/18” from “Harvest season” dropdown list
h. Click on the button labelled “Show data”
2.2.1.2. Outputs
2.2.1.2.1. Cane yield graph
The cane yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones cane per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.1.2.1.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month
2.2.1.2.1.2. Clicking on last point in the “Cumulative yield” series will show you what the cumulative yield per hectare show be on the harvest month of your crop.
2.2.1.2.2. Cane yield table
The cane yield table contains the data shown in the graph above it in table format. The data in the table can be downloaded as a Comma-Separated Values file for your own analysis. The growth rates under above normal, normal and below normal climate conditions are shown together with the standard deviations shown for each category.
2.2.1.2.3. Sucrose yield graph
The sucrose yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones sucrose per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.1.2.3.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month
2.2.1.2.3.2. Clicking on last point in the “Cumulative yield” series will show you what the cumulative yield per hectare show be on the harvest month of your crop.
2.2.1.2.4. Sucrose yield table
The sucrose yield table contains the data shown in the graph above it in tabular form. The data in the table can be downloaded as a Comma-Separated Values file for your own analysis. The growth rates under above normal, normal and below normal climate conditions are shown together with the standard deviations shown for each category.
2.2.2. Example of viewing fully irrigated land (100% irr) growth increments
2.2.2.1. Inputs
a. Select zone 13: Mtubatuba from the “Zone” dropdown list
b. Select “100% irr” from the “Irrigation Status” dropdown list
c. Select 12 from “Crop Cycle(months)” dropdown list
d. Select 120 from “TAM(mm)” dropdown list
e. Select May from “Harvest Month” dropdown list
f. Select “0.7: Good” from “Management Factor” dropdown list
g. Select “2017/18” from “Harvest season” dropdown list
h. Click on the button labelled “Show data”
2.2.2.2. Outputs
2.2.2.2.1. Cane yield graph
The cane yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones cane per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.2.2.1.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month
2.2.2.2.1.2. Clicking on last point in the “Cumulative yield” series will show you what the cumulative yield per hectare show be on the harvest month of your crop.
2.2.2.2.2. Cane yield table
The cane yield table contains the data shown in the graph above it in table format. The data in the table can be downloaded as a Comma-Separated Values file for your own analysis. The growth rates under above normal, normal and below normal climate conditions are shown together with the standard deviations shown for each category.
2.2.2.2.3. Sucrose yield graph
The sucrose yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones sucrose per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.2.2.3.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month
2.2.2.2.3.2. Clicking on last point in the “Cumulative yield” series will show you what the cumulative yield per hectare show be on the harvest month of your crop.
2.2.2.2.4. Sucrose yield table
The sucrose yield table contains the data shown in the graph above it in tabular form. The data in the table can be downloaded as a Comma-Separated Values file for your own analysis. The growth rates under above normal, normal and below normal climate conditions are shown together with the standard deviations shown for each category.
2.2.3. Example of viewing supplementary irrigation (50% irr) growth increments
2.2.3.1. Inputs
a. Select zone 13: Mtubatuba from the “Zone” dropdown list
b. Select “50% irr” from the “Irrigation Status” dropdown list
c. Select 12 from “Crop Cycle(months)” dropdown list
d. Select 120 from “TAM(mm)” dropdown list
e. Select May from “Harvest Month” dropdown list
f. Select “0.7: Good” from “Management Factor” dropdown list
g. Select “2017/18” from “Harvest season” dropdown list
h. Click on the button labelled “Show data”
2.2.3.2. Outputs
2.2.3.2.1. Cane yield graph
The cane yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones cane per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.3.2.1.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month
2.2.3.2.1.2. Clicking on last point in the “Cumulative yield” series will show you what the cumulative yield per hectare show be on the harvest month of your crop.
2.2.3.2.2. Cane yield table
The cane yield table contains the data shown in the graph above it in table format. The data in the table can be downloaded as a Comma-Separated Values file for your own analysis. The growth rates under above normal, normal and below normal climate conditions are shown together with the standard deviations shown for each category.
2.2.3.2.3. Sucrose yield graph
The sucrose yield graph consists of 4 lines, one line for the growth increments under below normal climate conditions, one line for growth increments under normal climate conditions, one line for growth increments under above normal climate conditions and one line for the cumulative yield which is the tones sucrose per hectare that you can expect at that point in the growth cycle of your crop. Cumulative yield is calculated by adding growth increments based on the climate in the past months since the start of your crop (highlighted by blue stars) and by assuming normal climate in the coming months until your crop harvests. If no climate data is available for the past months since the start of your crop normal climate conditions are assumed for those months as well.
2.2.3.2.3.1. Clicking on a point in the graph will show you more detailed increments, it will show you the exact increment value together with the minimum and the maximum possible values for that month