 ผลงานตีพิมพ์ในวารสารวิชาการWeed Seed Bank Response to Soil Depth, Tillage
and Weed Management in the Mid Hill Ecologyผู้แต่ง: Jagat Devi Ranjit,  Dr.Rungsit Suwanmonkha, Professor , Dr.Sombat Chinawong, Associate Professor , Mrs.Sutevee Sukprakarn, Associate Professor , Mrs.ISARA SOOKSATHAN, Associate Professor, Mrs.Sunanta Juntakool, Assistant Professor, วารสาร: |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Weed Seed Bank Response to Soil Depth, Tillage and Weed Management in the Mid Hill Ecology) ผู้เขียน:Jagat DEVI RANJIT, รังสิต สุวรรณเขตนิคม, ดร.สมบัติ ชิณะวงศ์, รองศาสตราจารย์, Sutevee Suprakarn, นางอิสรา สุขสถาน, รองศาสตราจารย์, นางสุนันทา จันทกูล, ผู้ช่วยศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe size and composition of weed seed bank was studied in the glass house based on the study initiated in the field under conventional and minimum tillage with five weed managements in wheat and dry direct seeded rice rotation at various soil depths such as 0-5 cm, 5-10 cm, 10-15 cm, and 15-20 cm. The experiments were conducted at Agronomy Farm, Khumaltar, Nepal during 2001-2003. The number of weed species was greater in weed seed bank than in the field. Eighty–one weed species belonging to 25 families were retrieved from the soil seed bank samples collected over three seasons. Dicot broadleaves ranked first in terms of number of species followed by grasses, sedges, monocot broadleaves and pteridophytes. Alopecuros aequalis, Digitaria sanguinalis, Echinochloa colona, Phalaris minor, Polypogon fugox, Cyperus difformis, C. dilutus, C. iria, C. sanguinolentus, Fimbristyllis littoralis, Chenopodium album, Coronopus didymus, Lindernia procumbens, Rumex crispus, Soliva anthemifolia, Stellaria media, S. aquatica, Commelina diffusa, Murdania sp. and Ceratopteri thalictroides were the common weeds. Vertical distribution of weed seed bank of grasses, sedges, and broadleaves showed in descending order from 5 cm to 20 cm in all season’s soil samples and the pressure of most weeds was at 5-10 cm soil depth. The total number of weeds in seed bank per square meter ranged from 6,800 to 9,500 in 0-5 cm depth. Tillage affected on grass weed seed bank but had no consistent effect on sedges and neither on broadleaves over seasons. Sulfosulfuron and fenoxaprop affected on annual grass weed seed bank but not on broadleaf by the later. ispyribac–sodium and anilophos both suppressed grass and sedge weed seed bank. Weed seed bank was influenced by management as well as soil depths. |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Influence of Tillage, Fertilizer, and Weed Management on Weed Seed Bank at Various Soil Depth of Wheat Production Field In Ethiopia) ผู้เขียน:Kassahun Zewdie, รังสิต สุวรรณเขตนิคม, ดร.สมบัติ ชิณะวงศ์, รองศาสตราจารย์, นายชัยฤกษ์ สุวรรณรัตน์, ผู้ช่วยศาสตราจารย์, นางสุนันทา จันทกูล, ผู้ช่วยศาสตราจารย์, ดร.วิจารณ์ วิชชุกิจ, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractScreen house experiments were conducted on two soil types at two locations of central highlands of Ethiopia during 2002 / 2003 to determine the combined effects of tillage, fertilizer, and weed management on weed seed bank at various soil depths in bread wheat (Triticum aestivum L.) field. Among the dominant weeds identified in the soil seed bank and in the field, 89 % of the majority of the weeds were annuals and 11% of them were perennials and biennials. From the total weed species, only few were the most dominant species including Polygonum nepalense, Galinsoga parviflora, Plantago lanceolata, Gnaplium unions, Sonchus arvensis, Spergula arvensis, Anagalis arvensis, Commelina benghlensis, Corrigiola capensis from broad leaf weed species and Setaria spp., Bromus pectinatus, Snowdenia polystachya and Phalaris paradoxa from grass weed species. The results revealed that tillage, fertilizer and weed management systems had significant effects on weed seed bank. The weed seed bank distribution and seed bank size differed among tillage treatments. The total amount of weed density tended to increase more in no tillage than conventional tillage or moldboard plow at both locations. The highest number of seed density in 0-30 cm depth of soil was found in the Kuyu black soil followed by Holetta red soil. In the NT system a large amount of weed seed was found in the depth of 0-10 cm followed by CvT and MP. The densities of broad leaf and grass weed seed were higher in NT than in CvT or MP at both locations. The highest percentages of weed seed reduction across locations were recorded 80 and 62% on MP and CvT or NT respectively. Tank mixture of fenoxaprop-P-ethyl and fluroxypyr +MCPA resulted in a significant reduction ranged from 70 to 80% of total weed number followed by hand weeding twice at all locations. The interactions between tillage and soil depth and between soil depth and weed management were species specific. Significant interactions were resulted from Spergula arvensis,, Corrigiola capensis, Polygonum nepalance and Galinsoga prviflora weed seed bank size. More than 60% of broad leaf and grass weeds were suppressed by tillage. Weed management was more important than tillage in affecting the weed seed bank size. |
 ที่มา:Kasetsart Journal (Natural Science)(วารสารวิทยาสารเกษตรศาสตร์ สาขาวิทยาศาสตร์)หัวเรื่อง:Weed seed bank response to soil depth, tillage and weed management in the mid hill ecology |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Competition and Control of Weeds in Kale Leaf Crop) ผู้เขียน:ดร.ทศพล พรพรหม, รองศาสตราจารย์ , Matthew Hayes, ดร.ปราโมทย์ สฤษดิ์นิรันดร์, ผู้ช่วยศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractWeed population responsed to weed control practices was carried out to evaluate weed seed bank, weed populations, and the effects of the herbicides applied preemergence of cultivation on kale leaf control. The first experiment involved an evaluation of the site including soil type and previous types of management. The seed bank was then evaluated to estimate both the composition and populations of weeds present, which could, then, be compared to the weeds growing. There was a positive correlation between the weed seed bank and above ground weed communities. The second experiment involved testing the effects of the herbicides at their recommended rates on weed control and the phytotoxicity on a kale leaf. The crop was most significantly affected by atrazine followed by oxyfluorfen and then alachlor. Three main weed species dominated the weed growth in this experiment were smooth mimosa (Mimosa invisa), slender amaranth (Amaranthus viridis) and purple nutsedge (Cyperus rotundus). The third experiment involved a bioassay testing, again of phytotoxicity of the three herbicides on nine separate crops; sweet corn, soybean, mungbean, swamp morning glory, cucumber, tomato, pepper, cabbage and coriander. Cabbage and coriander were not affected by any herbicides. |
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