EFFECT OF DIFFERENT DIRECTIONS OF SAMPLING ON THE PRECISION DISTRIBUTION MAP OF WEEDS

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SAFARI F.; BANNAYAN AVAL M.; RASHED MOHASSEL M.H.

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Journal: Iranian Plant Protection Research Year:2012 | Volume:26 | Issue:2 Page(s): 162-170

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Title

EFFECT OF DIFFERENT DIRECTIONS OF SAMPLING ON THE PRECISION DISTRIBUTION MAP OF WEEDS

Author(s)

SAFARI F. | BANNAYAN AVAL M. | RASHED MOHASSEL M.H. | Issue Writer Certificate

Keywords

BIOLOGICALQ2

ECONOMIC MODELSQ3

BIOLOGYQ2

WEED ECOLOGYQ2

KBDSSQ2

Abstract

Understanding the spatial distribution of weeds would provide good results for the commercial applications of future research programs, development forecast desirable of yield loss and understanding the processes that cause changes in spatial and temporal distribution weeds. In this order an experiment was conducted in 1388 to find the effects of BIOLOGICAL interactions, climate and agricultural operations on the spatial distribution weeds of the sugar beet field and change of the angle of Quadrat for sampling weeds. Sampling weed was taken in fourleaf stage of sugar beet by quadrates of (0.2m×0.4m) in the intersection of (7m×7m) square grids. Quadrates were rotated at 0, 45, 90, 135 degree angles, respectively perpendicular to row plowing and clockwise. Our results showed that weed distribution maps by angle of zero degrees showed highest density of weeds to reach the economic threshold. Also component of the variogram showed that the distribution pattern of weeds changed at different directions. Different types of weeds were every high Dispersion according to sampling angle. Elongation patches direction was dependent on weed management operations performed in the years ago and morphological characteristics of weeds.

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References

STUDY ON INFESTATION LEVELS AND SPATIAL DISTRIBUTIONS OF AMARANTHUS BLITOIDES, CHENOPODIUM ALBUM AND SOLANUM NIGRUM IN CORN FIELD

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APA: Copy

SAFARI, F., BANNAYAN AVAL, M., & RASHED MOHASSEL, M.H.. (2012). EFFECT OF DIFFERENT DIRECTIONS OF SAMPLING ON THE PRECISION DISTRIBUTION MAP OF WEEDS. IRANIAN PLANT PROTECTION RESEARCH (JOURNAL OF PLANT PROTECTION), 26(2), 162-170. SID. https://sid.ir/paper/142598/en

Vancouver: Copy

SAFARI F., BANNAYAN AVAL M., RASHED MOHASSEL M.H.. EFFECT OF DIFFERENT DIRECTIONS OF SAMPLING ON THE PRECISION DISTRIBUTION MAP OF WEEDS. IRANIAN PLANT PROTECTION RESEARCH (JOURNAL OF PLANT PROTECTION)[Internet]. 2012;26(2):162-170. Available from: https://sid.ir/paper/142598/en

IEEE: Copy

F. SAFARI, M. BANNAYAN AVAL, and M.H. RASHED MOHASSEL, “EFFECT OF DIFFERENT DIRECTIONS OF SAMPLING ON THE PRECISION DISTRIBUTION MAP OF WEEDS,” IRANIAN PLANT PROTECTION RESEARCH (JOURNAL OF PLANT PROTECTION), vol. 26, no. 2, pp. 162–170, 2012, [Online]. Available: https://sid.ir/paper/142598/en

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