EFFECT OF LIGHT COMPETITION AND NITROGEN FERTILIZER ON CANOPY STRUCTURE OF WHEAT AND WILD OAT

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AHMAD VAND G.; NASIRI MAHALATI MAHDI; KOUCHAKI ALI REZA

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Journal Paper

Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2006 | Volume:12 | Issue:6 Page(s): 100-112

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Title

EFFECT OF LIGHT COMPETITION AND NITROGEN FERTILIZER ON CANOPY STRUCTURE OF WHEAT AND WILD OAT

Author(s)

AHMAD VAND G. | NASIRI MAHALATI MAHDI | KOUCHAKI ALI REZA | Issue Writer Certificate

Keywords

WHEATQ3

WILD OATQ4

COMPETITIONQ4

NITROGEN FERTILIZERQ2

CANOPY STRUCTUREQ3

Abstract

The effect of light COMPETITION and NITROGEN FERTILIZER on CANOPY STRUCTURE of WHEAT and WILD OAT was studied by two experiments. The 1stexperiment which carried out at the field research station was an additive experiment using a split plot experiment, based on a randomized complete block design, with 4 replications. Amounts of nitrogen topdressing (25, 50, 75 and 100 kg N ha-I) were assigned to the main plots and WILD OAT plant densities (0, 30, 50 and 80 plant m-2) were assigned to the subplots. The population of WHEAT was 400 plant m-2. The 2ndexperiment which was conducted at the greenhouse was a replacement series experiment using a factorial experiment, based on a randomized complete block design, with 4 replications. Amounts of nitrogen topdressing were 0, 0.5, 1, 1.5 and 2 grams per pot, and relative densities of WHEAT and WILD OAT were 100:0, 75:25, 50:50, 25:75 and 0:100. The results of the additive experiment indicated that, by increasing WILD OAT plant density, the proportion of upper layer of WILD OAT canopy from shoot dry matter and leaf area index was increased. In pure stand of WHEAT light absorption was more than mixed canopy and light was extended at upper height of canopy. Vertical distribution of shoot dry matter in both species was not affected by nitrogen amounts. In the replacement series experiment leaf nitrogen content at alllaters of WHEAT pure stand canopy was less than mixed canopy, whereas WILD OAT pure stand had more leaf nitrogen content at all its layers.

Cites

بررسی نقش ساختار کانوپی و خصوصیات رشدی دو رقم گندم در شرایط رقابت، بر آستانه خسارت اقتصادی و عملکرد دو گونه علف هرز چاودار و خردل وحشی

References

COMPETITIVE RESPONSE OF WINTER WHEAT (TRITICUM AESTIVUM) TO VARIOUS PLANT DENSITIES OF WILD OAT (AVENA LUDOVICIANA) AND NITROGEN FERTILIZER.

Cite

APA: Copy

AHMAD VAND, G., NASIRI MAHALATI, MAHDI, & KOUCHAKI, ALI REZA. (2006). EFFECT OF LIGHT COMPETITION AND NITROGEN FERTILIZER ON CANOPY STRUCTURE OF WHEAT AND WILD OAT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 12(6), 100-112. SID. https://sid.ir/paper/9342/en

Vancouver: Copy

AHMAD VAND G., NASIRI MAHALATI MAHDI, KOUCHAKI ALI REZA. EFFECT OF LIGHT COMPETITION AND NITROGEN FERTILIZER ON CANOPY STRUCTURE OF WHEAT AND WILD OAT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2006;12(6):100-112. Available from: https://sid.ir/paper/9342/en

IEEE: Copy

G. AHMAD VAND, MAHDI NASIRI MAHALATI, and ALI REZA KOUCHAKI, “EFFECT OF LIGHT COMPETITION AND NITROGEN FERTILIZER ON CANOPY STRUCTURE OF WHEAT AND WILD OAT,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 12, no. 6, pp. 100–112, 2006, [Online]. Available: https://sid.ir/paper/9342/en

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