THE EFFECTS OF PLANT DENSITY, PLANTING PATTERN AND NICOSULFURON HERBICIDE ON WEED COMPOSITION, DIVERSITY AND DENSITY IN SILAGE CORN (CV. SC 704)

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ZAFARIAN M.; SADRABADI HAGHIGHI R.; ALIMORADI L.

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Journal: JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE) Year:2012 | Volume:6 | Issue:1 (21) Page(s): 91-110

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Title

THE EFFECTS OF PLANT DENSITY, PLANTING PATTERN AND NICOSULFURON HERBICIDE ON WEED COMPOSITION, DIVERSITY AND DENSITY IN SILAGE CORN (CV. SC 704)

Author(s)

ZAFARIAN M. | SADRABADI HAGHIGHI R. | ALIMORADI L. | Issue Writer Certificate

Keywords

JACARD SIMILARITY INDEXQ2

SHANNON- WIENER INDEXQ2

SIMPSON DOMINANCE INDEXQ2

WEED POPULATIONQ2

Abstract

In order to study the effect of plant density, planting pattern and herbicide dosage of nicosulfuron, a field experiment was arranged in a factorial split plot treatments based on RCBD with three replications in Chenaran, Khorasan Razavi, in 2010. The experimental treatments consisted of a factorial plant density (100000, 120000 and 140000 plants ha-1) in the planting pattern (single and double row) as main plot and herbicide dosage of nicousulforon in four levels (0, 1, 1.5 and 2, 1.ha-1) as sub-plot. Samplings were made at in five stages (37days after the emergence of corn and it was repeated once per 20 days). The results indicated reducing the weed density and dry matter of weeds in the first stage after the herbicide treatment. Moreover, it was observed a significant interaction effect between plant density with planting pattern and between planting pattern with herbicides dosages during growth season on reducing weed density and dry matter. Also results indicated that in between of this experiment's treatments, nicosulfuron herbicide reduced weed density at the beginning of growth season and double row planting pattern suppressed weed density during growing season, and resulted in lowest JACARD SIMILARITY INDEX (Sj) of weed species. Results also indicated that with increasing of plant density and herbicide dosage especially in composition of double row planting pattern, according to SHANNON- WIENER INDEX, sensitive population such as common purslane (Portulaca oleracea L.), buckhorn plantain (Plantago lanceolata L.), prostrate knotweed (Polygonum aviculare L.), black nightshade (Solanum nigrum L.) and Johnson grass (Sorghum halepens L.) was reduced in during growing season. SIMPSON DOMINANCE INDEX, showed that some low populated weeds such as redroot pigweed (Amaranthus retroflexus L.), common lambsquarters (Chenopodium album L.), field bindweed (Convolvulus arvensis L.) and Canada thistle (Circum arvensis L.) persisted their growth up to the end of growing season.

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APA: Copy

ZAFARIAN, M., SADRABADI HAGHIGHI, R., & ALIMORADI, L.. (2012). THE EFFECTS OF PLANT DENSITY, PLANTING PATTERN AND NICOSULFURON HERBICIDE ON WEED COMPOSITION, DIVERSITY AND DENSITY IN SILAGE CORN (CV. SC 704). JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE), 6(1 (21)), 91-110. SID. https://sid.ir/paper/182626/en

Vancouver: Copy

ZAFARIAN M., SADRABADI HAGHIGHI R., ALIMORADI L.. THE EFFECTS OF PLANT DENSITY, PLANTING PATTERN AND NICOSULFURON HERBICIDE ON WEED COMPOSITION, DIVERSITY AND DENSITY IN SILAGE CORN (CV. SC 704). JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE)[Internet]. 2012;6(1 (21)):91-110. Available from: https://sid.ir/paper/182626/en

IEEE: Copy

M. ZAFARIAN, R. SADRABADI HAGHIGHI, and L. ALIMORADI, “THE EFFECTS OF PLANT DENSITY, PLANTING PATTERN AND NICOSULFURON HERBICIDE ON WEED COMPOSITION, DIVERSITY AND DENSITY IN SILAGE CORN (CV. SC 704),” JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE), vol. 6, no. 1 (21), pp. 91–110, 2012, [Online]. Available: https://sid.ir/paper/182626/en

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