نتایج جستجو برای: cultural weed control

تعداد نتایج: 1468386  

2017
Woongchan Jeon Kwansoo Kim Vincenzo Torretta

This paper analyzes optimal weed control management strategies under static and dynamic decision rules. Seed bank is taken into account to introduce dynamics into the model. We present a numerical example of controlling Sheathed Monochoria (Monochoria Vaginalis) in Korean rice paddy fields. Our results show that producers benefit from dynamic decision rules; higher income and more control of we...

2001
Lorna Moxham

This paper demonstrates the framework and methodology how weed population dynamics can be predicted using rule-base fuzzy logic as applied to GIS spatial image. Parthenium weed (parthenium hysterophorus L.) infestation in the Central Queensland region poses a serious threat to the environment and economic viability of the infected areas. Government agencies have taken steps to control and manag...

Journal: :پژوهش های حبوبات ایران 0
علیرضا کوچکی حسام الدین سلوکی ثنا کاربر

introduction weed infestation causes an extremely reduction of crops yield. on the other hand, increasing the diversity of crops in agro-ecosystems will change the biomass distribution of weeds community, thereby reducing the number and density of different weed species. weed management in the past few decades has been in conflict with ecological principles and sustainability of the production ...

Journal: :Proceedings of the New Zealand Plant Protection Conference 1994

Journal: :Proceedings of the New Zealand Weed Control Conference 1959

Journal: :Proceedings of the New Zealand Weed Control Conference 1953

Journal: :Proceedings of the New Zealand National Weeds Conference 1949

Journal: :Journal of Weed Science and Technology 1962

Journal: :Proceedings of the New Zealand Weed and Pest Control Conference 1983

Journal: :بوم شناسی کشاورزی 0
علی قنبری زهره قویدل رضا قربانی قدریه محمودی

in order to study the different levels of irrigation on diversity, density and compound of weed species in corn field, experiment was conducted at agricultural research station, ferdowsi university of mashhad during growing season of 2008-2009. the experiment was with four levels of irrigation (6130, 7290, 8800 and 12330 m3) and four levels of weed control (complete control, broad-leaves contro...

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