Document Type : Research Paper

Author

• abbas abhari

payame noor

Abstract

In order to predict nitrogen remobilization and effect of ammonium nitrate and ammonium sulfate on the efficiency of water and nitrogen consumption in the fennel, a factorial experiment was conducted in a randomized complete block design with three replications. The first factor consisted of planting date at three levels (first: March 13, second: March 27 and third: April 18) and the second factor was nitrogen fertilizer spraying at three levels (ammonium sulfate (21%), ammonium nitrate (25%), and no fertilizer) with concentrations of one in a thousand in beginning of budding stage. The physiological efficiency of nitrogen increased to about 36.5, and the efficiency of water consumption was also increased. Therefore, it can be said that the availability of nitrogen in the plant tissue has a positive effect on the efficiency of water consumption. The results of the mean comparison showed that on the first and second planting date (respectively, with 85.3 and 92.9 mg/g of grain weight), ammonium sulfate foliar spraying treatment produced the highest amount of grain protein. Nevertheless, on the planting date of April 20, ammonium nitrate foliar spraying treatment produced the highest amount of grain protein with 81.12 mg/g of grain weight. Regarding the amount of total chlorophyll, the conditions were different.

Keywords

• Anthesis. Exponential function
• chlorophyll
• protein and yield

Main Subjects

• Herbal