SIMULATION OF SOIL NITROGEN CONTENT EFFECT ON WEED SEEDLING EMERGENCE PATTERN IN MOLDAVIAN BALM (DRACOCEPHALUM MOLDAVICA L.)

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MORADIAN AFSANEH; YOUSEFI ALI REZA; JAMSHIDI KHALIL; ANDALIBI BABAK

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Journal: Journal of Agricultural Science and Sustainable Production Year:2016 | Volume:26 | Issue:2 Page(s): 73-84

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Title

SIMULATION OF SOIL NITROGEN CONTENT EFFECT ON WEED SEEDLING EMERGENCE PATTERN IN MOLDAVIAN BALM (DRACOCEPHALUM MOLDAVICA L.)

Author(s)

MORADIAN AFSANEH | YOUSEFI ALI REZA | JAMSHIDI KHALIL | ANDALIBI BABAK | Issue Writer Certificate

Keywords

MODELINGQ2

NITROGENQ2

SUMMER WEEDSQ2

THERMAL TIMEQ2

WEED MANAGEMENTQ3

Abstract

The soil NITROGEN content with impact on weed seed dormancy breaking can change their seedling emergence pattern. A trial was carried out in 2014 to predict seedling emergence of Xanthium strumarium, Chenopodium album, Echinocloa cruss-galli, Amaranthus retroflexus and Convolvulus arvensis, and to evaluate the impact of soil NITROGEN content (Control with 0.07% NITROGEN, adding 50 and 100 kg N.ha-1) on seedling emergence pattern in Moldavian balm. The experimental design was randomized complete block design. Weed seedlings were counted and removed on a weekly basis throughout the season. The data were converted to percent of cumulative emergence and percentage of cumulative emergence values was compared with THERMAL TIME using Gompertz modified functions. The all species showed different emergence patterns and THERMAL TIME required for the onset of emergence. The results also showed that the emergence patterns of Chenopodium and Convolvulus not affected by NITROGEN treatments. However, soil NITROGEN content significantly changed emergence patterns of A. retroflexus, E. cruss-galli and X. strumarium. According to our model, A. retroflexus, E. cruss-galli and X. strumarium emergence, respectively, started at 237, 96 and 63 TT with 50 kg additional NITROGEN.ha-1, while the respective value in control were 340, 117 and 135, respectively. Due to influence of soil NITROGEN on emergence pattern of A. retroflexus, E. cruss-galli and X. strumarium, soil NITROGEN content should be considered as an important parameter in the MODELING of these weed seedling emergence.

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APA: Copy

MORADIAN, AFSANEH, YOUSEFI, ALI REZA, JAMSHIDI, KHALIL, & ANDALIBI, BABAK. (2016). SIMULATION OF SOIL NITROGEN CONTENT EFFECT ON WEED SEEDLING EMERGENCE PATTERN IN MOLDAVIAN BALM (DRACOCEPHALUM MOLDAVICA L.). JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE), 26(2), 73-84. SID. https://sid.ir/paper/180603/en

Vancouver: Copy

MORADIAN AFSANEH, YOUSEFI ALI REZA, JAMSHIDI KHALIL, ANDALIBI BABAK. SIMULATION OF SOIL NITROGEN CONTENT EFFECT ON WEED SEEDLING EMERGENCE PATTERN IN MOLDAVIAN BALM (DRACOCEPHALUM MOLDAVICA L.). JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE)[Internet]. 2016;26(2):73-84. Available from: https://sid.ir/paper/180603/en

IEEE: Copy

AFSANEH MORADIAN, ALI REZA YOUSEFI, KHALIL JAMSHIDI, and BABAK ANDALIBI, “SIMULATION OF SOIL NITROGEN CONTENT EFFECT ON WEED SEEDLING EMERGENCE PATTERN IN MOLDAVIAN BALM (DRACOCEPHALUM MOLDAVICA L.),” JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE), vol. 26, no. 2, pp. 73–84, 2016, [Online]. Available: https://sid.ir/paper/180603/en

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