Thinking to set up a greenhouse study, (testing plant would be corn or grass). Ammonium nitrate would be the fertilizer to use in pots. please suggest to me the quantity of NH4NO3 to put in a pot.
I think, to know the available nitrogen in the soil prior to the application is very important. Then you can decide what amount should be applied depending on the crop requirement.
1. Its depend on type of crop and nitrogen present in the soil.
2. Initial stages of crop Nitrogen not required. If required you should supply through foliar spraying.
3. If you want add nitrogen initially you may supply in organic form like FYM, Vermicompost and usually Soil , FYM and Sand applied in the ratio of 2:1:1 ratio.
First are the pots drained because you should avoid saturation, especially early on. Second think about watering once a week with something like one tenth strength Hoaglands. Third, make sure that the pots are deep enough so that the plants grow like they would in the field. Typical grasses need deep pots and these can be made from sections of plastic water pipe. If you will accept some advice: at least 6 eps of treatments and layout in blocks
If you don't know I suggest you make it a study variable, when your question would then be what range? Zero might make sense at one end, with luxury consumption or toxicity at the other. If you propose to add a granular fertilizer it would be less variable to add it (and mix it) per m3 rather than per pot.
The rate for pot experiment is ten time higher than normal application. No N for Control, To, 10 time N as standard application for T1; 2 T1 = T2; 3 T1 = T3
First knowing the amount of nitrogen in the soil is key. Then does the crop add nitrogen to the soil is another issue. If these two variables are known you can then estimate the quantity needed.
Why ammonium nitrate=(NH4NO3)? Dear Mr. Resham Thapa.
Ammonium nitrate consumption is very sensitive.
Mr. Thapa, your question needs refining, in my opinion, before appropriate answers can be provided. 1. What is the size of your pot? 2) Also, as Ndukwe already stated, what is the N level in the soil you're filling the pots? 3) what other physical and chemical properties of the soil do you know? Note, plants don't depend on only N (the grasses included), are you supplying those elements as well? 4) why NH4NO3? Why not Ca(NO3)2? or other nitrogen sources? 5) Is it a study on increasing N levels? 6) what would be the length of your study?
If you have a soil science department, I suggest you contact them or contact a USDA page, there would be some recommendations.
Mr. Thapa, you need to specify the concerned crop either it will be corn or grass (specify) because nitrogen requirement varies with crop. In addition, Nitrogen application will depend upon the soil nitrogen status and crop need.
You may find the amount of nitrogen by using the recommended dose of N required on hectare basis and convert it to the soil (Kg) used in pot. Again, specify first which crop you are gonna grow in trial.
Hello,
To address your question, there is need for you to test your soil and know the available nitrogen it contains. This will serve as a guide to tell the quantity that need to be added.
Thank you all for your suggestions and recommendations! I appreciate your efforts in explaining things.
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