Volume 22, Issue 2 (Summer 2018)                   jwss 2018, 22(2): 395-406 | Back to browse issues page


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Naghavi H, Sabbah A, Amirpour robat M, Nourgholipour F. The Investigation of the Effect of Rate and Time of Nitrogen Application on the Quantity Characteristics of Safflower in Calcareos Soil in Kerman Area. jwss 2018; 22 (2) :395-406
URL: http://jstnar.iut.ac.ir/article-1-3561-en.html
1. Soil and Water Research Department, Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Kerman, Iran. , naghavii@gmail.com
Abstract:   (7956 Views)
This study was conducted based on a randomized complete block design and a factorial experiment with three replications in regions to investigate the effect of different rates and times of nitrogen on the quantitative properties of safflower. The first factor was different nitrogen rates including 0, 60, 120 and 180 kg ha-1 , and the  second one was nitrogen application time including seed sowing, rosette and the before flowering stage; these were  1-0-0, 1/3-2/3-0, 2/3-1/3-0 and 1/3-1/3-1/3 with the  Goldasht variety. The results showed that nitrogen rate had a significant effect on all studied traits. Nitrogen application time also had a significant effect on capitulum number and yield at p>0.99 and on the length of plant, nitrogen adsorption, agronomic efficiency and apparent recovery at p>0.95. So based on the results, the recommended consumption of 60 kg/ha N was split into three equal amounts at the time of planting, rosette and flowering or 1/3-2/3-0, in Kerman area.
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Type of Study: Research | Subject: Ggeneral
Received: 2017/08/20 | Accepted: 2018/07/22 | Published: 2018/09/15

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