DRY MATTER PRODUCTION AND PARTITIONING OF REDROOT PIGWEED (AMARANTHUS RETROFLEUUS) IN PURE AND MIXED CULTURE WITH CORN (ZEA MAYS)

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MACKARIAN H.; BANAEIAN AVAL M.; RAHIMIAN H.

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Journal: Agricultural Sciences and Technology Year:2002 | Volume:16 | Issue:2 Page(s): 153-160

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Title

DRY MATTER PRODUCTION AND PARTITIONING OF REDROOT PIGWEED (AMARANTHUS RETROFLEUUS) IN PURE AND MIXED CULTURE WITH CORN (ZEA MAYS)

Author(s)

MACKARIAN H. | BANAEIAN AVAL M. | RAHIMIAN H. | Issue Writer Certificate

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Abstract

Dry matter production and partitioning of redroot pigweed (Amaranthus retroflexus) in pure and mixed stand with corn (Zea mays) was studied in an experiment conducted in 2001 in a field experiment at Ferdowsi University of Mashhad. A spilt plot arrangement with 3 replications was applied, main plots were planting dates (21 May, 6 June) and subplots were pure stand of corn at two densities (9.5 and 7.1 plant per m2) and pure and mixed stand of pigweed at two densities of corn. Results showed a close correlation between the transmission of photo synthetically active radiation (PAR) and leaf area index. Biomass production was linearly related to cumulative intercepted PAR. Total dry matter of pigweed reduced as radiation decreased along with increasing corn density. At both planting dates total dry matter of pigweed in pure stand was 2.5 fold pigweed dry matter in mixed stand. Results showed that when the level of competitive stress increased, pigweed allocated relatively more biomass to main stem than to branches.

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APA: Copy

MACKARIAN, H., BANAEIAN AVAL, M., & RAHIMIAN, H.. (2002). DRY MATTER PRODUCTION AND PARTITIONING OF REDROOT PIGWEED (AMARANTHUS RETROFLEUUS) IN PURE AND MIXED CULTURE WITH CORN (ZEA MAYS) . AGRICULTURAL SCIENCES AND TECHNOLOGY, 16(2), 153-160. SID. https://sid.ir/paper/527852/en

Vancouver: Copy

MACKARIAN H., BANAEIAN AVAL M., RAHIMIAN H.. DRY MATTER PRODUCTION AND PARTITIONING OF REDROOT PIGWEED (AMARANTHUS RETROFLEUUS) IN PURE AND MIXED CULTURE WITH CORN (ZEA MAYS) . AGRICULTURAL SCIENCES AND TECHNOLOGY[Internet]. 2002;16(2):153-160. Available from: https://sid.ir/paper/527852/en

IEEE: Copy

H. MACKARIAN, M. BANAEIAN AVAL, and H. RAHIMIAN, “DRY MATTER PRODUCTION AND PARTITIONING OF REDROOT PIGWEED (AMARANTHUS RETROFLEUUS) IN PURE AND MIXED CULTURE WITH CORN (ZEA MAYS) ,” AGRICULTURAL SCIENCES AND TECHNOLOGY, vol. 16, no. 2, pp. 153–160, 2002, [Online]. Available: https://sid.ir/paper/527852/en

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