SUGGESTIONS FOR WEEDING IN NORTHERN HARDWOODS
نویسندگان
چکیده
منابع مشابه
Excessive Exposure Stimulates Epicormic Branching in Young Northern Hardwoods
1 Sudden and excessive exposure of northern hardwood trees often causes growth responses that degrade tree quality, injuries that lead to tree deterioration, or both. The most sensitive and visible tree reaction to increased exposure is the formation of epicormic branches. Such branches may arise along the tree bole from either dormant or adventitious buds in response to some physiological stim...
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A working definition of non-timber value is the difference between the revenues attainable by implementing an infinite horizon timber revenue maximizing cutting rule, and the value of the observed harvest. This non-timber value was estimated for the stands of the Forest Inventory Analysis data in the maple-beech-birch type in Wisconsin. Non-timber values averaged 23 $/ha&r, and were higher than...
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مقدمه: یکی از مهمترین مراحل در فرآیند تحقیق، هدایت بررسی متون بصورتی مناسب می باشد. این فرآیند از نظر بیشتر دانشجویان و محققین وظیفه ای سنگین و خطیر است(۱). امروزه با توجه به رشد و توسعه فن آوری اطلاعات، محققین با انفجار اطلاعات مواجه هستند، به نحوی که تقریبا در یک روز ۶۰۰۰ متن علمی جدید منتشر می شود و آگاهیهای علمی تقریبا پس از گذشت هر ۵ سال دو برابر می گردد.
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The allometric equations developed by Whittaker et al. (1974) at the Hubbard Brook Experimental Forest have been used to estimate biomass and productivity in northern hardwood forest systems for over three decades. Few other species-specific allometric estimates of belowground biomass are available, because of the difficulty of collecting the data, and such equations are rarely validated. Using...
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The objective of this research is the replacement of hand weeding in organic farming by a device working autonomously at field level. The autonomous weeding robot was designed using a structured design approach, giving a good overview of the total design. A vehicle was developed with a diesel engine, hydraulic transmission, four-wheel drive and four-wheel steering. The available power and the s...
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ژورنال
عنوان ژورنال: The Forestry Chronicle
سال: 1935
ISSN: 0015-7546,1499-9315
DOI: 10.5558/tfc11103-2