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| Registros recuperados: 107 | |
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| Jensen, M.E.; Sletten, W.H.. |
| The High Plains of Texas is one of the largest irrigated areas in the United States. Most of the 5.7 million acres irrigated in Texas (1959 census) is concentrated in the High Plains. The area is unique because most of the irrigated land is of one soil series-Pullman. Pullman soils represent over 5 million acres of the “hardlands” in the Southern High Plains of Texas, New Mexico, and Oklahoma. The term “hardlands” is used extensively when referring to the High Plains because of the soil characteristics of the area. The soils are mostly clay loams and silty clay loams. The have low intake rates, are dense, and become very hard and difficult to till when dry. The differences between the clay loams and silty clay loams are minor. The physical... |
| Tipo: Technical Bulletin |
Palavras-chave: Alfalfa; Tillage; Mass Import - autoclassified (may be erroneous). |
| Ano: 1965 |
URL: http://eprints.nwisrl.ars.usda.gov/1137/1/26.pdf |
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| Tarkalson, D.D.; Bjorneberg, D.L.; Moore, Amber. |
| The sugarbeet (Beta vulgaris L.) industry in Idaho is interested in strip tillage (ST) primarily due to the potential savings in tillage costs. This study was conducted to evaluate the use of strip tillage in Idaho compared to conventional tillage practices and to evaluate N requirements of sugarbeet under ST and conventional tillage. The effect of tillage method (strip tillage, moldboard plow system [MP], and chisel plow system [CP]) and N supply (5 levels) on sugarbeet production factors were investigated in Kimberly, ID from 2008 to 2010 on a Portneuf silt loam with barley as the previous crop. Root and estimated recoverable sucrose (ERS) yields were the same under all three tillage practices. However, estimated tillage costs for ST were from 53... |
| Tipo: Article |
Palavras-chave: Sugarbeet; Tillage; Nitrogen. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1502/1/1465.pdf |
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| MEHMOOD-UL-HASSAN,; QAYYUM,A.; SHER,A.; TAHIR,M.I.; AZEEM,M.; FAREED,A.. |
| ABSTRACT: Tillage practice has a significant role on weeds eradication and soil water conservation in crop production. Under semiarid agriculture, the monsoon rains (65%) are major source of water in Potohar, Pakistan, which can effectively be used mostly for winter crops production. To evaluate the impact of different tillage system for prevailing cropping systems and their weeds biomass under semiarid conditions, field experiment was conducted at the Arid University Research Farm Koont Rawalpindi (Pakistan) during crop growth seasons 2013-14 and 2014-15. Tillage systems as treatments were (a) three cultivations with a cultivator, as control treatment, (b) mold-board with two cultivations, (c) chisel-plough with two cultivations and (d) minimum tillage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tillage; Cropping systems; Weeds; Biomass; Semiarid. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100231 |
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| MAQSOOD,Q.; ABBAS,R.N.; KHALIQ,A.; ZAHIR,Z.A.. |
| ABSTRACT: A field trial was conducted with the aim of assessing weed seed bank status of soil under maize cultivation. It was worked out by sampling from soil corer at different depths ranging from 0-5, 5-10, 10-15, 15-20 and 20-25 cm. Weed seed bank was monitored with a cultivator, a rotavator, a mouldboard plough (MB) and a chisel plough in tilled plots under Atrazine 330 EC at 1.00 kg a.i. ha-1 at 20 DAS, hand weeding at 20 and 40 DAS and no weeding. Sixteen weed species were identified in soil samples, four species contributing about 72% of the total weed seed bank. Tillage system was more important determinant of weed seed density than the weed management practices. Movement pattern of weed seeds by all tillage treatments differ significantly over... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrazine spray; Hand weeding; Tillage; Vertical movement. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100282 |
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| MILÉO,L.J.; SILVA,J.F.; ALBERTINO,S.M.F.; LEITE,B.N.; MENEZES,D.S.; SANTOS,A.F.. |
| ABSTRACT This study has aimed to carry out a phytosociological survey of weeds in different collection periods, in cassava crops of two varieties grown in two consecutive years. The varieties were Pão, of the sweet class, and Racha-terra, of the bitter class. The weeds surveys were performed at 28, 56, 84, 112, 140, 168, 196, 224, 252, 280 and 308 days after planting in the experimental units of each variety. For weeds sampling, a sampler with an area of 0.25 m2 released twice at random in the floor area of the treatments was used. The phytosociological survey quantified 5,708 individuals distributed in 17 families, represented by 32 species, of which 25 were dicotyledonous and seven were monocotyledonous. The most representative families in number of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Competition; Tillage; Manihot esculenta. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200267 |
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| Maung, Thein A.; Gustafson, Cole R.. |
| This study examines the impact of stochastic harvest field time, corn cob and stover harvest technologies, increases in farm size, and alternative tillage practices on profit maximizing potential of corn cob and stover collection in North Dakota. Using three mathematical programming models, we analyze farmers’ harvest activities under 1) corn grain only harvest option, 2) simultaneous corn grain and cob harvest(one-pass) option 3) separate corn grain and stover harvest (two-pass) option. Under the first corn grain only option, farmers are able to complete harvesting corn grain and achieve maximum net income in a fairly short amount of time with existing combine technology. However, under the simultaneous corn grain and cob one-pass harvest option, our... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cob; Stover; Harvest field time; Optimization; Farm size; Tillage; Crop Production/Industries; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/103613 |
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| Registros recuperados: 107 | |
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