Forums
New posts
Forum list
Search forums
What's new
New posts
New resources
Latest activity
Trending Threads
Resources
Latest reviews
Search resources
FarmTV
Farm Compare
Search
Tokens/Searches
Calendar
Upcoming Events
Members
Registered members
Current visitors
New Resources
New posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Forum list
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Farm Machinery
Precision Farming & GPS
Technology Questions from a College Student
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="augie" data-source="post: 1390192" data-attributes="member: 2016"><p>[USER=24228]@mgriffin4024[/USER] I use farmworks to create shp. files which can be exported to a Topcon x30, this is linked to the drill controller via RS232 to vary the seed rate according to the prescription map loaded onto the x30. your professor is right in suggesting to use at least 3 perspectives. You need to be clear of your objectives in adjusting seed rate, and how you intend to manage the growing crop. increasing the seed rate may lead to weaker stemmed plants that require more growth regulators, but smother weeds more effectively.</p><p>You will need a good set of historical yield data, preferably of the crop you intend to grow, zone your fields for soil texture, depth and (in my case) stone content. Use weed maps and identify areas under pressure from pests and disease, but don't duplicate information from your yield maps. I.e. if a yield in a past crop has been effected by pests eating your crop in that year don't use yield and pests to determine seed rate for the future crop.</p><p>In farmworks (or another mapping program) set up all your zones, perspective values by calling them numbers, not names ( don't call soil texture clay, give it a number). create a formula to make each perspective influence the seeding rate ( IF texture<2= 200,<3=150) or similar. Each perspective will have a new line in the formula box. I think there is a limit on the number of perspective that can be used in any 1 formula, but you can use 2 perspectives to build a new layer, then use 2 new layers to formulate another layer, and so on, not user friendly. The easy way is to get a map of your field, divide the polygons up as you see fit, and assign a seed rate to each polygon, then save as a shp file ready to export in a format compatible with your drill controller, but not very scientific.</p><p>I have over 100 fields, and the present drill, a vaderstad seedhawk will not vary seed rate on multiple tanks, because RS232 will only allow single product, a farcical situation in which vaderstad have not come up with a satisfactory solution. My knowledge of creating multiple perspective formula is therefore sketchy.</p></blockquote><p></p>
[QUOTE="augie, post: 1390192, member: 2016"] [USER=24228]@mgriffin4024[/USER] I use farmworks to create shp. files which can be exported to a Topcon x30, this is linked to the drill controller via RS232 to vary the seed rate according to the prescription map loaded onto the x30. your professor is right in suggesting to use at least 3 perspectives. You need to be clear of your objectives in adjusting seed rate, and how you intend to manage the growing crop. increasing the seed rate may lead to weaker stemmed plants that require more growth regulators, but smother weeds more effectively. You will need a good set of historical yield data, preferably of the crop you intend to grow, zone your fields for soil texture, depth and (in my case) stone content. Use weed maps and identify areas under pressure from pests and disease, but don't duplicate information from your yield maps. I.e. if a yield in a past crop has been effected by pests eating your crop in that year don't use yield and pests to determine seed rate for the future crop. In farmworks (or another mapping program) set up all your zones, perspective values by calling them numbers, not names ( don't call soil texture clay, give it a number). create a formula to make each perspective influence the seeding rate ( IF texture<2= 200,<3=150) or similar. Each perspective will have a new line in the formula box. I think there is a limit on the number of perspective that can be used in any 1 formula, but you can use 2 perspectives to build a new layer, then use 2 new layers to formulate another layer, and so on, not user friendly. The easy way is to get a map of your field, divide the polygons up as you see fit, and assign a seed rate to each polygon, then save as a shp file ready to export in a format compatible with your drill controller, but not very scientific. I have over 100 fields, and the present drill, a vaderstad seedhawk will not vary seed rate on multiple tanks, because RS232 will only allow single product, a farcical situation in which vaderstad have not come up with a satisfactory solution. My knowledge of creating multiple perspective formula is therefore sketchy. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Farm Machinery
Precision Farming & GPS
Technology Questions from a College Student
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top