Feddes parameters for mustard

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Brijesh
Posts: 3
Joined: Wed May 08, 2019 7:09 am
Location: India

Feddes parameters for mustard

Post by Brijesh » Mon Jul 15, 2019 11:12 am

Respected Sir,
I am searching Feddes parameters for mustard crop.
Any idea if anyone published on mustard? I haven't found anything on mustard crop.

Malik
Posts: 5
Joined: Mon Apr 20, 2020 11:04 am
Location: Pakistan

Re: Feddes parameters for mustard

Post by Malik » Mon Apr 20, 2020 2:55 pm

Similarly I need for cucumber.

Jirka
Posts: 5031
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Feddes parameters for mustard

Post by Jirka » Mon Apr 20, 2020 3:48 pm

I suggest that you search the literature.

If you do not find anything than convert the values from Mass & Hoffman model for the osmotic stress for cucumber, which is included in HYDRUS. I can see the threshold value of -1854.58 cm and the slope of 0.000170577 1/cm (when you use the major ion chemistry module UnsatChem).
J.

Malik
Posts: 5
Joined: Mon Apr 20, 2020 11:04 am
Location: Pakistan

Re: Feddes parameters for mustard

Post by Malik » Mon Apr 20, 2020 5:27 pm

Can you plz briefly explain the methodology to convert these values to feddes parameter?

Jirka
Posts: 5031
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Feddes parameters for mustard

Post by Jirka » Mon Apr 20, 2020 6:40 pm

If you look at the two models, you should be able to figure that out yourself. It's pretty trivial. J.

Malik
Posts: 5
Joined: Mon Apr 20, 2020 11:04 am
Location: Pakistan

Re: Feddes parameters for mustard

Post by Malik » Tue Apr 21, 2020 6:49 pm

I'm totally confused can you plz spare some time for me. I'll be really grateful to you.

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