THE EFFECT OF WEED INFESTATION PERIODS ON LIGHT ABSORPTION AND USE EFFICIENCY BY CANOPY OF SEED PRODUCING AND COMMERCIAL PLANT DENSITY OF POTATO (SOLANUM TUBEROSUM)

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MONDANI F.; GOLZARDI F.; AHMADVAND GOUDARZ; SEPEHRI ALI; JAHEDI AZHANG

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Journal: AGRICULTURAL RESEARCH Year:2007 | Volume:7 | Issue:1 Page(s): 27-40

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Title

THE EFFECT OF WEED INFESTATION PERIODS ON LIGHT ABSORPTION AND USE EFFICIENCY BY CANOPY OF SEED PRODUCING AND COMMERCIAL PLANT DENSITY OF POTATO (SOLANUM TUBEROSUM)

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Keywords

POTATOQ3

WEED INFESTATIONQ2

LIGHT ABSORPTIONQ2

LIGHT USE EFFICIENCYQ2

LIGHT COEFFICIENTQ2

Abstract

In order to investigate the effect of WEED INFESTATION periods on LIGHT ABSORPTION capacity and use efficiency by canopy of POTATO in seed producing and commercial plant density, an experiment was conducted in the farm of Agricultural faculty of Bu-Ali Sina University in 2006. The study was cal Tied out in a factorial experiment based on a randomized complete bloke design with three replications. The factors were POTATO plant density at two levels, 5.33 (optimum commercial density) and 6.66 (optimum seed producing density) plants per m-2 and WEED INFESTATION periods at seven levels, in which, weeds were allowed to grow for 10, 20, 30, 40 and 50 days after POTATO plant emergence and then weeds were removed manually until harvest. Two control including full- season weeded and full- season infested were taken. The amount of light in the top and below the canopy was measured 10 days after POTATO plant emergence and repeated 8 times with 10 day intervals. Weeds were removed before light measurement in each infestation period treatments. Weed and POTATO sampling was done at the light measurement time to determine POTATO leaf area index and weeds total dry matter. The results showed that by increasing WEED INFESTATION periods, leaf area index, LIGHT ABSORPTION and use efficiency, light extinction coefficient and number of POTATO branches per area unit, decreased and weed total dry matter, increased. By increasing the infestation duration, POTATO tuber yield decreased significantly. The effects of WEED INFESTATION periods on the above trials in commercial plant density was more than that of seed producing plant density.

Cites

EFFECT OF VARIOUS CORN AND BEAN INTERCROPPING DENSITIES ON WEED POPULATIONS

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APA: Copy

MONDANI, F., GOLZARDI, F., AHMADVAND, GOUDARZ, SEPEHRI, ALI, & JAHEDI, AZHANG. (2007). THE EFFECT OF WEED INFESTATION PERIODS ON LIGHT ABSORPTION AND USE EFFICIENCY BY CANOPY OF SEED PRODUCING AND COMMERCIAL PLANT DENSITY OF POTATO (SOLANUM TUBEROSUM). AGRICULTURAL RESEARCH, 7(1), 27-40. SID. https://sid.ir/paper/84707/en

Vancouver: Copy

MONDANI F., GOLZARDI F., AHMADVAND GOUDARZ, SEPEHRI ALI, JAHEDI AZHANG. THE EFFECT OF WEED INFESTATION PERIODS ON LIGHT ABSORPTION AND USE EFFICIENCY BY CANOPY OF SEED PRODUCING AND COMMERCIAL PLANT DENSITY OF POTATO (SOLANUM TUBEROSUM). AGRICULTURAL RESEARCH[Internet]. 2007;7(1):27-40. Available from: https://sid.ir/paper/84707/en

IEEE: Copy

F. MONDANI, F. GOLZARDI, GOUDARZ AHMADVAND, ALI SEPEHRI, and AZHANG JAHEDI, “THE EFFECT OF WEED INFESTATION PERIODS ON LIGHT ABSORPTION AND USE EFFICIENCY BY CANOPY OF SEED PRODUCING AND COMMERCIAL PLANT DENSITY OF POTATO (SOLANUM TUBEROSUM),” AGRICULTURAL RESEARCH, vol. 7, no. 1, pp. 27–40, 2007, [Online]. Available: https://sid.ir/paper/84707/en

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