Effect of Dap Fertilizer Type and Growth Periods in Ammonium Concenteration in Rhizosphere of Rice Plant

Abstract

In order to study the effect of the DAP fertilizer type on the concentration of Ammonium ion during the different periods of rice plant growth, The experiment was carried out in one of the rice fields located in The Ghamas district / Diwaniyah governorate in the summer season 2019 using the design of the entire random sectors (RCBD). The experiment included the use of  DAP fertilizer (mineral DAP, organic DAP and high potash DAP). Rice seeds were grown on 2019/6/10 and Anber 33 on 2019/6/15 to study the effect of fertilizer type and growth periods in the form of Ammonium ion in rice risphere during plant growth periods (105,75.45) days of agriculture. The results showed that the highest concentration of ammonium for Anber rice 33 was achieved at the mineral DAP fertilizer (41.73) mg kg^-1 in the reduction layer during the time period (45) a day of cultivation and in organic DAP fertilizer (37.80, 36.70) mg kg^-1 in the reduction layer during the two periods (75 and 105) on the day of cultivation in succession. Jasmine rice was the highest concentration of Ammonium treated at organic DAP fertilizer (39.83 and 36.30) mg kg^-1 in the reduction layer during the two periods (105 and 75) days of successive planting and in the mineral DAP fertilizer (37.23) mg  kg ^-1 in the reduction layer during the period (45) days of agriculture in succession and in the metal DAP fertilizer (37.23) mg kg^-1 in the reduction layer during the period (45) days of agriculture. The highest absorption of Jasmine rice germination of Ammonium ionin in the rissoflayer was at the time (45 and 75) days of cultivation. While Anber rice was the highest absorber at(105) days of cultivation, overall the (75) days of cultivation were the highest in both classes in the rice plant.