Iranian Journal of Horticultural Science

Iranian Journal of Horticultural Science

Evaluation of palnt density and nitrogen on phonological characteristics, ‎photosynthesis capacity‏ ‏and qualitative traits of guar landrace (Cyamopsis tetragonoloba L. Taub.)‎‏ ‏

Document Type : Full Paper

Authors
Heydar Meftahizadeh 1
Mohammad Hassan Asareh 2
1 Assistant Professor, Faculty of Agriculture & Natural Resources, University of Ardakan, Ardakan, Iran
2 Professor, Research Institute of Seed and Seedling Registration and Certification, Karaj, Iran‎
10.22059/ijhs.2020.287878.1703
Abstract
In order to evaluate the effect of plant density and nitrogen fertilizer on phonological, qualitative, photosynthesis capacity and yield components of guar native population, an experiment was carried out as split plot based on randomized complete blocks design with three replications in 2018 at Iranshahr, Iran. The main factor was four levels of plant density (25, 45, 60 and 85 plants/m2) and the sub factor, nitrogen fertilizer from the source of urea (0, 50, 100, 150 kg / ha). The results of variance analysis showed that the effect of plant density on all traits was significant, except carbohydrate, protein and gum at 1% level. Comparison of mean plant density showed that 25 and 85 plants / m2 had the highest and lowest number of branches, respectively. Treatments of 45 and 85 plants /m2 had the highest and lowest mean of seed yield and biological yield per hectare, respectively. The interaction of 100 kg N fertilizer and 60 plants/ m2 devoted the highest percentage of protein and interaction of 0 kg N fertilizer and 45 plants/m2 has minimum protein percent. Results showed that, in order to obtain high seed and gum yield product, density of 45 plants/m2 followed by 50 kg nitrogen/ha in Grembite landraces were recommended.
Keywords
Carbohydrate
gum
locust bean
protein
seed yield
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Iranian Journal of Horticultural Science
Volume 52, Issue 2
Summer 2021
Pages 329-339

  • Receive Date 31 August 2019
  • Revise Date 08 December 2019
  • Accept Date 22 January 2020