Impacts of Nitrogen Fertilizer Sources, Amount and Timing on Yield and Yield Components of Potato in jiroft

Journal of plant ecophysiology

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 23 آذر 1402

نوع مقاله: Original Article

نویسنده

محمدرضا بهرامجردی^*

دانشگاه ازاد جیرفت

چکیده

To obtain the optimum N fertilizer amounts, sources and timing for potato, we

conducted an experiment in split plot-factorial form based on randomized complete

block designs with 3 replicates in Jiroft city, located in the south of Kerman

Province, Iran. In this study, we took into account N sources for the main plots and

N fertilizer amount and time for the subplots. As to the N fertilizer consumption

timings and the levels, T1 stands for the total consumption of N fertilizer during

cultivation, T2 for consumption of



N at cultivation and the remaining



simultaneous with the beginning of flowering and T3 for of



N consumption at

planting,





of N consumption coincided with the soil hilling and



at the same time

as flowering; N rates were of the levels R1:150, R2:200 and R3:250 kg/ha. Sources

were considered to be of two levels: S1=urea and S2-ammonium sulfate. According

to our results, treatments were significantly different with regard to yields so as to

obtain the highest yield from R3 treatment consumption at the rate 26.72 ton/ha,

which statistically had no particular difference from R2 treatment with a rate of

23.86 ton/ha. In addition, the highest yield was obtained from the time T2 with the

rate 30.83 ton/ha and from the source S1 the highest yield was 27.38 ton/ ha.

Regarding such results, the highest yield belonged to the treatment R2S1T2.

کلیدواژه‌ها

fertiluzer؛ potato؛ rate؛ amount؛ yeild