فهرست مطالب الهام زمان زاده

In order to evaluate the effect of Metham Sodium and Sulfosulforon dosages on broomrape control and tomato yield an experiment was conducted using randomized complete block design with 4 replications in Mashhad Iran. Treatments were Metham Sodium and Sulfosulforon at the rates of 26.5, 53, 79.5, and 106 gr.ha-1, at the rates of 400, 600.800, and 1000 kg.ha-1. The results showed that Metham Sodium was more effective than Sulfosulforon. The highest dry matter, number of broomrape foliage and tomato yield were obtained by using 1000 and 800 kg. ha-1 of Metham Sodium. Sulfosulforon was applied as post emergence once in this experiment. It seems that because of this reason efficiency is less than that of comparison with Metham Sodium. Thus pre and post multi – applications of the herbicide was suggested during cropping season.

In this paper، first a brief introduction of ranked set sampling is presented. Then، construction of confidence intervals for a quantile of the parent distribution based on ordered ranked set sample is given. Because the corresponding confidence coefficient is an step function، one may not be able to find the exact prescribed value. With this in mind، we introduce a new method and show that one can obtained an optimal confidence interval by appealing the proposed approach. We also compare the proposed scheme with the other existence methods.