Effects of Foliage Removal and Using Different Nitrogen Rates on Remobilization of Pre-anthesis Assimilates to the Grain in a Dual-purpose (Forage and Grain) Barley

Authors

  • Adel Modhej Department of Agronomy and Plant Breeding, Shoshtar Branch, Islamic Azad University, Shoshtar, Iran.
  • Mani Mojadam Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
  • Reza Mamaghani Department of Plant Breeding, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Abstract:

In order to study the source limitation and contribution of pre-anthesis assimilates to grain in dual-purpose (forage and grain) barley, a field experiment was carried out in Iran, Ahvaz region. The experimental design was split plot in randomized complete block with three replications. Application rates of nitrogen at four levels (60, 120, 180 and 220 kg.ha-1 N) were as main plots, while sub plots were three harvesting levels (no cutting crop, cutting at five and 10 cm above ground level). Spikelet removal from one side of spike was done to determine source limitation. Results indicated that foliage removal (FR) from five and 10 cm above ground level reduced grain yield 32% and 15.8%, respectively. Highest grain yield (530 g.m-2) was obtained by using 120 kg.ha-1 N treatment. Source limitation was increased with harvesting 28% and 23% in cutting crop from 5 and 10 cm level, respectively. Grain yield was generally reduced with increasing source limitation in dual-purpose barley crop. In cutting treatments, minimum source limitation was obtained with 120 kg.ha-1 N. The contribution of dry matter translocation pre-anthesis assimilates to grains was reduced by foliage removal treatments, due to reduction in vegetative growth at anthesis stage. Contribution of dry matter remobilization and current photosynthesis to grain yield were increased (11%) and reduced (8.7%) respectively by foliage cutting at 5 cm above ground level.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

effects of foliage removal and using different nitrogen rates on remobilization of pre-anthesis assimilates to the grain in a dual-purpose (forage and grain) barley

in order to study the source limitation and contribution of pre-anthesis assimilates to grain in dual-purpose (forage and grain) barley, a field experiment was carried out in iran, ahvaz region. the experimental design was split plot in randomized complete block with three replications. application rates of nitrogen at four levels (60, 120, 180 and 220 kg.ha-1 n) were as main plots, while sub p...

full text

The Effect of Water Stress on Remobilization of Pre-anthesis Stored Assimilates to Grains in Wheat

Abstract Five bread wheat (Triticum aestivum L.) cultivars including Kavir, Pishtaz, Niknejad, Omid and Roshan were evaluated in a split plot experiment based on randomized complete block design with three replications. Water stress and well-watered conditions were assigned to the main plots and varieties to the subplots. Water stress was imposed by withholding irrigation at the booting stage....

full text

on translation of politeness strategies in dialogues involving female characters in translations and retranslations of novels translated before and after the islamic revolution of iran and their effects on the image of women: a polysystem theory approach

abstract reception environment has considerable effects on accepting a translation. as the expectations of a target culture and its values and needs change throughout history, its criteria for accepting a translation or rejecting it will change accordingly (gentzler, 2001). the expectations of iran, as the reception environment in the present study, have changed after the islamic revolution. i...

the effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance

this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...

15 صفحه اول

on the relationship between using discourse markers and the quality of expository and argumentative academic writing of iranian english majors

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

15 صفحه اول

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 1  issue 1

pages  27- 32

publication date 2015-04-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023