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| MEHMOOD,T.; KHAN,S.U.; QAYYUM,A.; GURMANI,A.R.; AHMED,W.; LIAQUAT,M.; FARID,A.. |
| ABSTRACT: Weeds affect crop growth, health and yield by competing for resources, and they serve as refuge for insect pests. Mulches of different materials have been found to control weeds and insect pests. A field study was conducted at the village of Mang, Haripur, Khyber Pakhtunkhwa, Pakistan, to explore the effect of various mulch materials on weed suppression in maize fields under rain-fed conditions in 2013. Eight mulch materials treatments were used: control (no mulching), wheat straw mulch, dry leaves of eucalyptus, rice straw mulch, grass clippings, living mulch (soybean crop), black plastic mulch and the herbicide Primextra were investigated under a randomized complete block design with four replications. Statistical analysis of data showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Mulch materials; Net benefits; Weed density; Weed biomass. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100347 |
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| Ronchi,C.P.; Terra,A.A.; Silva,A.A.. |
| The effects of competition of six weed species on growth, nutrient concentration and nutrient content of coffee plant root system under greenhouse conditions were evaluated. Thirty days after coffee seedling transplantation into 12 L pots with soil level area of 6.5 dm². Weeds were transplanted or sowed in these pots, at densities of 0, 1, 2, 3, 4 and 5 plants per pot. The duration of competition (or weedy periods) from weed transplantation or emergence until plant harvesting, at the weed preflowering stage, were (in days): 77 (Bidens pilosa), 180 (Commelina diffusa), 82 (Leonurus sibiricus), 68 (Nicandra physaloides), 148 (Richardia brasiliensis) and 133 (Sida rhombifolia). Dry matter of coffee plants was linearly reduced with increasing B. pilosa and S.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Weed density; Interference; Mineral nutrition; Root. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000400004 |
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| SHAH,R.H.; BALOCH,M.S.; ZUBAIR,M.; KHAN,E.A.. |
| ABSTRACT: The present research work was undertaken to find out the phytotoxic effects of different concentrations of aqueous extracts of leaves, stems and root of milkweed (Calotropis procera) in the Agronomic Research Area of Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa (KPK), Pakistan during 2013-14 and 2014-15. The treatments consisted of different concentrations of aqueous leaf, stem and root extracts (10, 20, 30 and 40%) of milkweed, which were compared with tap water (control). The results showed that the reduction of all studied parameters, including weeds, growth and yield of wheat was proportional to the concentration of aqueous extracts of milkweed in use. The level of inhibition was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotoxicity; Calotropis procera; Aqueous extracts; Weed density; Growth; Yield; Wheat. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100279 |
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| SIBTAIN,M.; TANVEER,A.; JAVAID,M.M.; ALI,H.H.. |
| Chickpea yield potential is limited by weed competition in typical chickpea growing areas of Pakistan where zero tillage crop grown on moisture conserved from rains received during the months of September and August. The objective of this work was to evaluate the growth and yield characteristics of chickpea grown in coexistence with increasing densities of wild onion (Asphodelus tenuifolius). The experiment was comprised of six density levels viz. zero, 20, 40, 80, 160 and 320 plants m-2 of A. tenuifolius. A decrease in chickpea primary and secondary branches per plant, pods per plant, seeds per pod, 100-seed weight and seed yield was observed due to more accumulation of dry matter per increasing densities of A. tenuifolius. The increase in A. tenuifolius... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cicer arietinum; Weed density; Yield components; Grain yield. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100067 |
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| Yeng Lee; Santimaitree Gonkhamdee; Bhalang Suriharn. |
| Weeds play an important role in decreasing yield in dry-direct seeded rice. However, using herbicide could effectively control weed and help increase rice yield. The objective of this research was to investigate the effect of herbicide application on weed control and rice yield in dry-direct seeded paddy field. The experiment was conducted at a farmer’s field, Khon Kaen province, from June to November of 2012 with the use of rice variety KDML 105. The nine treatments were 1) no weeding, 2) hand weeding, 3) oxadiazon, 4) oxadiargyl, 5) oxyfluorfen, 6) pendimethalin, 7) butachor/propanil, 8) clomazone and 9) bispyribac-sodium. The rates of herbicide application of treatments 3-9 were 120.0, 40.0, 28.2, 198.0, 175.0, 38.4 and 4.0 g ai/rai, respectively, The... |
| Tipo: PhysicalObject |
Palavras-chave: Rice; KDML 105 variety; Rainy season rice; Weed control; Herbicide; Phytotoxicity; Weed density; Yield components; ข้าว; พันธุ์ขาวดอกมะลิ 105; ข้าวนาปี; นาหว่านข้าวแห้ง; การกำจัดวัชพืช; สารกำจัดวัชพืช; ความเป็นพิษ; ความหนาแน่นของวัชพืช; องค์ประกอบผลผลิต; ผลผลิตข้าว. |
| Ano: 2013 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5798 |
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