1/8 @Agricura_ZW Agronomy Tip 19/365
AMMONIUM NITRATE & UREA
There are 2 types of fertilizers which are normally used as top dressing by farmers - Ammonium Nitrate (AN) & Urea. Ammonium nitrate have got 34.5% of Nitrogen while Urea have got a slightly higher content @basera_john
AMMONIUM NITRATE & UREA
There are 2 types of fertilizers which are normally used as top dressing by farmers - Ammonium Nitrate (AN) & Urea. Ammonium nitrate have got 34.5% of Nitrogen while Urea have got a slightly higher content @basera_john
2/8 That's 46% N. While farmers are aware of these 2 types of top dressing fertilizers - NOT many are knowledgeable about the correct way of applying UREA in particular.
Ammonium nitrate can be easily placed onto the ground next to the crop @CdeNMaswerasei @Fifi_dvc @MM_Garden1
Ammonium nitrate can be easily placed onto the ground next to the crop @CdeNMaswerasei @Fifi_dvc @MM_Garden1
3/8 While Urea has to be applied DIFFERENTLY. Placing Prilled/Granular Urea on top of the soil - next to the crop as is the case with Ammonium nitrate is TECHNICALLY WRONG due to it's high ability to VOLATILIZE into the air as AMMONIA GAS @MoLAWRR_Zim @AgritexS @SandraNabasirye
4/8 This is true ESPECIALLY if it remains on the soil surface for extended periods during warm & dry weather. Urea will start to breakdown as soon as it's applied to the soil.
If the soil is dry NO REACTION OCCURS. Ammonia will simply escape into the air as gas @agribusiness110
If the soil is dry NO REACTION OCCURS. Ammonia will simply escape into the air as gas @agribusiness110
5/8 If one comes back into the field a few hours after applying Urea he/she will be able to smell Ammonia gas as it vaporizes - typical smell of rotten substances. NB: It is therefore CRITICAL for farmers to note that Urea should ONLY be applied @mrLethario @MaminiminiObert
6/8 UNDER ADEQUATE MOISTURE CONDITIONS.
THE KEY to the most efficient use of Urea is to incorporate it into the soil during with a tillage operation. Urea must be covered by soil immediately unless there is sufficient moisture @WendyMadzura @basera_john @cmashx @mucharedzeyi
THE KEY to the most efficient use of Urea is to incorporate it into the soil during with a tillage operation. Urea must be covered by soil immediately unless there is sufficient moisture @WendyMadzura @basera_john @cmashx @mucharedzeyi
7/8 For it to immediately dissolve into the soil to avoid VOLATILIZATION losses. UREA APPLICATION RATE: As a rough rule of thump - the application rate for Urea is 75% that of Ammonium nitrate e.g. Based on SOIL ANALYSIS - If the application rate for AN is 300kgs @akin_adesina
8/8 Per hectare, then the application rate for Urea becomes 225kgs per hectare @Agricura_ZW @AgribusinessZim @agribusinesszw @agribusiness110 @basera_john @CdeNMaswerasei @JohnMuchenje4 @Madanzit @Rusere_Ronald @MutambaTinashe @MM_Garden1 @FarmDudeZW @WendyMadzura @PhiriDivah
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