The Effect of the Sowing Date and the Rate of the Phosphate Fertilizer on the Seed Yield and A Number of its Components for the Coriander Plant

Abstract

 A field experiment was carried out at Kafar Sandal Research

Station, which belongs to Idlib Research Center, in the 2018-2019

agricultural season. And this experiment was meant to study the effect of

the two sowing dates (in the middle of January and February), and the two 

rates of the super phosphate fertilizer 46%, in addition to the overlapping

between them. The results of the experiment showed that the treatment fo

witness of the first sowing date exceeded the other treatments in the number

of plants per square meter. As the number of plants reached 75.5 plant per

square meter. While the second sowing date, whose addition rate of the

Phosphate fertilizer was 150 kg/h exceeded the first one. And a higher

number of flowering inflorscences in the plant was recognized. Increasing

the rate of the phosphate fertilizers up to 150 kg/h, and the early sowing

date (The middle of February) led to a positive increase in the number of

seeds/plant, and in the weight of seeds/plant. Furthermore, the second

sowing date played a role in increasing the weight of the 1000 seeds, with

the addition of 120 kg of the phosphate fertilizer per hectare. And with the

increase of the rate of the phosphate fertilizer up to 150 kg/h, this treatment,

in the second cultivation date, exceeded the treatment of the witness, and it

was the best among all the experimental treatments. As the seeds yields of the coriander plant reached 1006 kg/h.