Academic literature on the topic 'Simultaneous sowing'
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Journal articles on the topic "Simultaneous sowing"
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SANTOS, JAMILE MARIA DA SILVA DOS, CLOVIS PEREIRA PEIXOTO, MARCOS ROBERTO DA SILVA, ADEMIR TRINDADE ALMEIDA, and ANA MARIA PEREIRA BISPO DE CASTRO. "AGRONOMIC AND PRODUCTIVE CHARACTERISTICS OF SUNFLOWER INTERCROPPED WITH FORAGE IN A CROP-LIVESTOCK INTEGRATION SYSTEM." Revista Caatinga 32, no. 2 (2019): 514–25. http://dx.doi.org/10.1590/1983-21252019v32n224rc.
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ABSTRACT The objective of this study was to evaluate the agronomic characteristics and yield of a sunflower crop grown together with forages in a crop-livestock integration system. The experiment was carried out in a randomized complete block design, in a 3×3 + 1 factorial scheme. Three sunflower intercropping with forage plants [sunflower + Urochloa ruziziensis (SB); sunflower + Panicum maximum cv. Tanzania (SP); sunflower + Urochloa ruziziensis + Cajanus cajan (SBGu)], sown in three ways [simultaneous sowing (SS), delayed sowing (DS), and simultaneous sowing with herbicide/graminicide (SSH) application], with the monocroped sunflower as a control, with three years of cultivation (2013, 2014, and 2015). The following characteristics were evaluated: plant height, stalk diameter, head diameter, number of achenes per heads, the mass of thousand achenes, harvest index, and the productivity of achenes. Data were submitted to analysis of variance, and the means were compared by the Tukey and Dunnett tests at 5% probability. The SB and SBGu intercropped promote greater sunflower productivity. The forage Panicum maximum cv. Tanzania in intercropped with sunflower reduces plant production components and productivity. Lapsed sowing delayed and simultaneous sowing with herbicide/graminicide application promote higher productivity of sunflower.
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Gerasymchuk, Y. V., O. I. Adamenko, V. G. Sahnevych, O. M. Nychyporuk, Y. M. Berlinec, and M. M. Berlinec. "Results of research of pre-sowing disinfection of seeds in an electric field." https://journal.imesg.gov.ua, no. 11(110) (2020): 178–86. http://dx.doi.org/10.37204/0131-2189-2020-11-21.
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Annotation Purpose. Determine the effect of pre-sowing disinfection of seeds in an electric field on the indicators of sowing qualities and yielding properties. Methods. Analysis of the effect of the decontamination factors of the electric field on the pathogenic microflora of agricultural seeds and the creation of a model sample of electrotechnological means for its disinfection. Small-scale and laboratory experiments to determine the influence on the sowing qualities and yielding properties of seeds while simultaneously acting on the decontamination factors of an electric field. Results. Scheme of a model sample of an electrotechnological tool with simultaneous action on seeds of agricultural disinfectants of electrostatic field, corona discharge and ozone. Indicators of sowing qualities and yielding properties of “Terek” soybean seeds according to the results of small-field field experiment after pre-sowing decontamination in an electric field. Dependence of germination energy and laboratori likeness of wheat and maize seeds on the duration of simultaneous action of decontamination factors of electrostatic field, corona discharge and ozone. Conclusions. The simultaneous action of the decontamination factors of the electrostatic field, the corona discharge field and the ozone on soybean seeds improves its indicators of sowing qualities and yielding properties. In relation to control (seeds without disinfection in an electric field) the yield increase is 13.8–18.6%. The current tendency to reduce the duration of pest control is to increase the voltage of the electric field to 5.3 кV/сm. Disinfection of wheat and maize seeds in an electric field increases germination energy by 8–11% and laboratory germination by 5–9%. The highest value of germination energy was obtained with the duration of decontamination 30 min. Keywords: seeds, decontamination, electric field, simultaneous effect of decontamination factors, field experiment.
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Lachuga, Yu F., B. Kh Akhalaya, and Yu Kh Shogenov. "New design universal working bodies of tillage and seeding equipment." Rossiiskaia selskokhoziaistvennaia nauka, no. 4 (August 19, 2019): 73–76. http://dx.doi.org/10.31857/s2500-26272019473-76.
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New designs of tillage and seeding equipment are presented. Technological and technical deficiencies of the existing working bodies for surface tillage and sowing techniques of row crops are noted. To eliminate the shortcomings, new universal working bodies of tillage and sowing units have been proposed, which provide for the mechanization and automation of working processes of tillage and seeding of various row crops. Their technological and technical advantages over the existing traditional working bodies are given. The technical characteristics of the new working bodies are presented, which allow to simultaneously perform four operations: cultivation, fissure, seeding and leveling the field surface. Execution of the sieve in the form of two discs with rollers on its inner surface allows cutting a slit along the sides from the vertical axis of seed placement, at a depth of almost twice the sowing depth to improve the water-air regime, with simultaneous compaction of the soil by the rollers. The final operation to level the soil across the entire width of the cultivator's paw grip is carried out by embedding a train. Also presented is the design of a modernized pneumatic sowing unit for various sowing methods, ensuring the simultaneous sowing of seeds of several types of row crops with their placement at different planting depth in accordance with agrotechnical requirements
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Ofori, Francis, and W. R. Stern. "Relative Sowing Time and Density of Component Crops in a Maize/Cowpea Intercrop System." Experimental Agriculture 23, no. 1 (1987): 41–52. http://dx.doi.org/10.1017/s0014479700001113.
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SUMMARYThe effect of variations in the relative sowing time and density of component crops in a maize/cowpea intercrop were examined in two experiments. In the first experiment, maize and cowpea were sown together, and either 10 or 21 days before or after each other. Maize yield was reduced when sown at the same time or after cowpea; intercrop cowpea yields were less than sole cowpea yields at all sowings. In the second experiment, maize densities of 35, 50 and 70 × 103 plants ha−1 were combined with cowpea densities of 70, 100 and 140 × 103 plants ha−1. Increasing the density of either crop in the mixture resulted in increases in total yield. Maize reduced cowpea yields more than the effect of cowpea on maize yields. In terms of LER and total seed protein yield, there was no advantage of either staggered sowings over simultaneous sowing or of the various intercrop density combinations, except between the lowest and the highest densities of either maize or cowpea. The LERs appeared to follow the trends in cowpea yields and total seed protein yields the trends in maize yields.
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Ofori, Francis, and W. R. Stern. "Relative Sowing Time and Density of Component Crops in a Maize/Cowpea Intercrop System." Experimental Agriculture 23, no. 1 (1987): 41–52. http://dx.doi.org/10.1017/s0014479700003392.
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SUMMARYThe effect of variations in the relative sowing time and density of component crops in a maize/cowpea intercrop were examined in two experiments. In the first experiment, maize and cowpea were sown together, and either 10 or 21 days before or after each other. Maize yield was reduced when sown at the same time or after cowpea; intercrop cowpea yields were less than sole cowpea yields at all sowings. In the second experiment, maize densities of 35, 50 and 70 × 103plants ha−1were combined with cowpea densities of 70, 100 and 140 × 103plants ha−1. Increasing the density of either crop in the mixture resulted in increases in total yield. Maize reduced cowpea yields more than the effect of cowpea on maize yields. In terms of LER and total seed protein yield, there was no advantage of either staggered sowings over simultaneous sowing or of the various intercrop density combinations, except between the lowest and the highest densities of either maize or cowpea. The LERs appeared to follow the trends in cowpea yields and total seed protein yields the trends in maize yields.
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Begum, AA, MSU Bhuiya, SMA Hossain, Amina Khatun, SK Das, and MY Sarker. "System Productivity of Potato + Maize Intercropping as Affected by Sowing Date." Bangladesh Agronomy Journal 19, no. 2 (2017): 11–20. http://dx.doi.org/10.3329/baj.v19i2.31848.
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The experiment was conducted at Agronomy Research Field, Bangladesh Agricultural Research Institute (BARI), Gazipur during 2009-2010 to find out suitable sowing time of maize in potato + maize intercropping for maximum yield and economic return. Treatments of the experiment were: T1= Simultaneous sowing (SS) of potato and hybrid maize (HM), T2= SS of potato and composite maize (CM), T3= HM sown 10 days after potato planting (DAPP), T4= CM sown 10 DAPP, T5= HM sown 20 DAPP, T6= CM sown 20 DAPP, T7= HM sown 30 DAPP, T8= CM sown 30 DAPP, T9= HM sown 40 DAPP, T10 = CM sown 40 DAPP, T11= Sole potato, T12= Sole HM and T13= Sole CM. The result revealed that sole potato and maize produced the highest yield, LAI, TDM and CGR. The HM showed better performance than CM. The highest equivalent yield a monetary return indicated that potato + HM sown 30 DAPP intercropping was the most productive and profitable.Bangladesh Agron. J. 2016 19(2): 11-20
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Clerget, B., M. Sidibe, C. S. Bueno, et al. "Crop photoperiodism model 2.0 for the flowering time of sorghum and rice that includes daily changes in sunrise and sunset times and temperature acclimation." Annals of Botany 128, no. 1 (2021): 97–113. http://dx.doi.org/10.1093/aob/mcab048.
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Abstract Background and Aims Daylength determines flowering dates. However, questions remain regarding flowering dates in the natural environment, such as the synchronous flowering of plants sown simultaneously at highly contrasting latitudes. The daily change in sunrise and sunset times is the cue for the flowering of trees and for the synchronization of moulting in birds at the equator. Sunrise and sunset also synchronize the cell circadian clock, which is involved in the regulation of flowering. The goal of this study was to update the photoperiodism model with knowledge acquired since its conception. Methods A large dataset was gathered, including four 2-year series of monthly sowings of 28 sorghum varieties in Mali and two 1-year series of monthly sowings of eight rice varieties in the Philippines to compare with previously published monthly sowings in Japan and Malaysia, and data from sorghum breeders in France, Nicaragua and Colombia. An additive linear model of the duration in days to panicle initiation (PI) and flowering time using daylength and daily changes in sunrise and sunset times was implemented. Key Results Simultaneous with the phyllochron, the duration to PI of field crops acclimated to the mean temperature at seedling emergence within the usual range of mean cropping temperatures. A unique additive linear model combining daylength and daily changes in sunrise and sunset hours was accurately fitted for any type of response in the duration to PI to the sowing date without any temperature input. Once calibrated on a complete and an incomplete monthly sowing series at two tropical latitudes, the model accurately predicted the duration to PI of the concerned varieties from the equatorial to the temperate zone. Conclusions Including the daily changes in sunrise and sunset times in the updated photoperiodism model largely improved its accuracy at the latitude of each experiment. More research is needed to ascertain its multi-latitudinal accuracy, especially at latitudes close to the equator.
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Petrychenko, Je. "Research of the unit for intrasoil fertilizing of soil with simultaneous sowing." Visnyk agrarnoi nauky 95, no. 1 (2017): 68–71. http://dx.doi.org/10.31073/agrovisnyk201701-13.
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Melnikov, Dmitry, Ivan Ignatenko, Yuri Tsarev, and Dmitry Vivchar. "Analysis of design and technological solutions of strip sowing machines." E3S Web of Conferences 175 (2020): 05040. http://dx.doi.org/10.1051/e3sconf/202017505040.
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General analysis of the design and technological solutions of machines for strip sowing is given. The task is to find a middle ground between constructive and technological solutions and zonal conditions that would ensure high productivity of the cultivated crop at minimal cost. The analysis shows that a promising direction is the use of combined aggregates designed for surface tillage, both for sowing grain crops and for row crops, with simultaneous application of mineral fertilizers and harrowing.
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Chuyanov, Dustmurod, Golib Shodmonov, Gayrat Ergashov, and Islom Choriyev. "Combination machine for soil preparation and sowing of gourds." E3S Web of Conferences 264 (2021): 04035. http://dx.doi.org/10.1051/e3sconf/202126404035.
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The purpose of the study is to substantiate the method and design scheme of a combined machine for preparing the soil and sowing melons. The authors propose a new method of soil preparation and sowing, as well as a machine for its implementation. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. The method of preparing the soil and planting gourds provides a combination of the following technological processes: the turnover of the layers of the upper layer of soil, the sowing area to the left and to the right, shallow tilling the soil of the field with the left and right sides of the sowing area, deep tillage seeding areas with simultaneous formation of irrigation furrows and the local application of fertilizers, soil preparation for sowing in line sowing and sowing seeds of melons. The machine consists of lister housings installed along the axis of symmetry of the unit, flat cutters, parallel-type deep-diggers, furrowers, coulters for fertilizing, and a sowing device. It was found that preparation of soil for sowing and planting of melons with a minimum expenditure of energy is provided by the width of Lusternik buildings 86 cm, the width of tillers and cultivators, respectively, 45 and 33 cm, the longitudinal distance between the body and the plane of 35 cm between the cultivators of 42.3 cm, and longitudinal spacing of the chisel cultivator and sowing device 110 cm.
Dissertations / Theses on the topic "Simultaneous sowing"
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Chioderoli, Carlos Alessandro. "Consorciação de braquiárias com milho outonal em sistema plantio direto como cultura antecessora da soja de verão na integração agricultura-pecuária /." Ilha Solteira : [s.n.], 2010. http://hdl.handle.net/11449/98794.
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Orientador: Luiz Malcolm Mano de Mello<br>Banca: Élcio Hiroyoshi Yano<br>Banca: Carlos Eduardo Angeli Furlani<br>Resumo: As elevadas taxas de decomposição do material orgânico em regiões tropicais tem sido um dos problemas para a manutenção e sustentabilidade do sistema plantio direto, devido à necessidade de produção de grandes quantidades de palha. Nessa condição a semeadura simultânea de forrageiras tropicais com culturas produtoras de grãos constitui uma alternativa para suprir o aporte anual de palha. Com o objetivo de identificar, no sistema de integração agricultura-pecuária, a melhor modalidade de consorciação de milho outonal com braquiária foi conduzido o presente trabalho na FEPE-UNESP de Ilha Solteira - SP. Foi utilizado o delineamento em blocos ao acaso, no esquema fatorial (3x3), com quatro repetições. Os tratamentos foram constituídos por três espécies de braquiárias (Brachiaria decumbens, Brachiaria brizantha e Brachiaria ruzizienses) e três modalidades de consórcio das braquiárias com o milho (MBL- Milho com Braquiária na Linha de semeadura do milho, misturada com o adubo de base e depositada a 0,10 m de profundidade; MBE- Milho com Braquiária semeada na Entrelinha no mesmo dia da semeadura do milho, com a presença de uma linha de semeadura intermediária; MBC- Braquiária na Entrelinha do milho semeada junto com o adubo de cobertura. Os resultados permitiram concluir que quando o objetivo principal da consorciação for produção de grãos de milho outonal e de soja como cultura de verão é recomendada à utilização da Brachiaria ruzizienses e a melhor modalidade de semeadura é na época de adubação de cobertura do milho. A consorciação e seqüência de culturas praticada proporcionaram aumento na macroporosidade do solo e a quantidade de palha produzida foi suficiente para manutenção da estabilidade do sistema plantio direto<br>Abstract: The high rates of decomposition of organic matter in tropical regions has been one of the problems for the maintenance and no tillage system sustainability, due the necessity of producing large quantities of straw. In this condition the simultaneous sowing of tropical forages with producing cultures of grains constitutes an alternative to provide it dock annually of straw demanded. With the objective to identify, in the pasture-agriculture integration system, the best intercrop modality of fall maize with braquiária was driven the present work in the FEPE-UNESP of Ilha Solteira - SP. The delineation was used in blocks at random, in the scheme fatorial (3x3), with four repetitions. The treatments were constituted by three sorts of braquiárias (Brachiaria decumbens, Brachiaria brizantha and Brachiaria ruzizienses) and three kinds of partnership of the braquiárias with the maize. (MBL - maize with Braquiária in the line of sowing of the maize, mingled with the basic manure and deposited to 0,10 m of depth; MBE - maize with Braquiária sowed in the line space in the same day of the sowing of the maize, with the presence of a line of intermediary sowing; MBC - Braquiária in the line space of the corn sowed together with the manure of covering. They allowed the results to conclude what when the principal objective of the intercropping is a production of grains of autumnal corn and of soy like summer culture it is recommended to the use of the Brachiaria ruzizienses and the best kind of sowing is in the time of fertilizing of covering of the maize. The intercropping and sequence of cultures practiced provided increase in the macroporosity of the ground and that the quantity of produced straw was sufficient for maintenance of the no tillage system sustainability<br>Mestre
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Chioderoli, Carlos Alessandro [UNESP]. "Consorciação de braquiárias com milho outonal em sistema plantio direto como cultura antecessora da soja de verão na integração agricultura-pecuária." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/98794.
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chioderoli_ca_me_ilha.pdf: 2032442 bytes, checksum: 3e8fd3720d7272c35d926ab25f080222 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>As elevadas taxas de decomposição do material orgânico em regiões tropicais tem sido um dos problemas para a manutenção e sustentabilidade do sistema plantio direto, devido à necessidade de produção de grandes quantidades de palha. Nessa condição a semeadura simultânea de forrageiras tropicais com culturas produtoras de grãos constitui uma alternativa para suprir o aporte anual de palha. Com o objetivo de identificar, no sistema de integração agricultura-pecuária, a melhor modalidade de consorciação de milho outonal com braquiária foi conduzido o presente trabalho na FEPE-UNESP de Ilha Solteira – SP. Foi utilizado o delineamento em blocos ao acaso, no esquema fatorial (3x3), com quatro repetições. Os tratamentos foram constituídos por três espécies de braquiárias (Brachiaria decumbens, Brachiaria brizantha e Brachiaria ruzizienses) e três modalidades de consórcio das braquiárias com o milho (MBL- Milho com Braquiária na Linha de semeadura do milho, misturada com o adubo de base e depositada a 0,10 m de profundidade; MBE- Milho com Braquiária semeada na Entrelinha no mesmo dia da semeadura do milho, com a presença de uma linha de semeadura intermediária; MBC- Braquiária na Entrelinha do milho semeada junto com o adubo de cobertura. Os resultados permitiram concluir que quando o objetivo principal da consorciação for produção de grãos de milho outonal e de soja como cultura de verão é recomendada à utilização da Brachiaria ruzizienses e a melhor modalidade de semeadura é na época de adubação de cobertura do milho. A consorciação e seqüência de culturas praticada proporcionaram aumento na macroporosidade do solo e a quantidade de palha produzida foi suficiente para manutenção da estabilidade do sistema plantio direto<br>The high rates of decomposition of organic matter in tropical regions has been one of the problems for the maintenance and no tillage system sustainability, due the necessity of producing large quantities of straw. In this condition the simultaneous sowing of tropical forages with producing cultures of grains constitutes an alternative to provide it dock annually of straw demanded. With the objective to identify, in the pasture-agriculture integration system, the best intercrop modality of fall maize with braquiária was driven the present work in the FEPE-UNESP of Ilha Solteira – SP. The delineation was used in blocks at random, in the scheme fatorial (3x3), with four repetitions. The treatments were constituted by three sorts of braquiárias (Brachiaria decumbens, Brachiaria brizantha and Brachiaria ruzizienses) and three kinds of partnership of the braquiárias with the maize. (MBL - maize with Braquiária in the line of sowing of the maize, mingled with the basic manure and deposited to 0,10 m of depth; MBE - maize with Braquiária sowed in the line space in the same day of the sowing of the maize, with the presence of a line of intermediary sowing; MBC - Braquiária in the line space of the corn sowed together with the manure of covering. They allowed the results to conclude what when the principal objective of the intercropping is a production of grains of autumnal corn and of soy like summer culture it is recommended to the use of the Brachiaria ruzizienses and the best kind of sowing is in the time of fertilizing of covering of the maize. The intercropping and sequence of cultures practiced provided increase in the macroporosity of the ground and that the quantity of produced straw was sufficient for maintenance of the no tillage system sustainability
Book chapters on the topic "Simultaneous sowing"
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Oksanen, T., R. Soitinaho, J. Huuskonen, and V. Vayrynen. "Autonomous tractors harrowing and sowing simultaneously." In LAND.TECHNIK AgEng 2019. VDI Verlag, 2019. http://dx.doi.org/10.51202/9783181023617-159.
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Walls, Tonya Evette, Malayka Neith Cornejo, Tara J. Plachowski, Erica Kristina Reid, and Soo Park. "Sowing Seeds of Justice." In Research Anthology on Instilling Social Justice in the Classroom. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7706-6.ch070.
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Forming the basis for a provocative dialogue and written to illuminate teaching stories often pushed to the margins, this chapter provides a counter-narrative to the discourse surrounding leaky teacher-of-color pipelines and the national teacher crisis. Employing a critical race analytical lens, critical auto-ethnographic approach, and narrated through prose, five female educators committed to social justice share how they rely on unique and intersecting identities to sustain themselves in contested school spaces, while simultaneously exploring the cultural wealth they and their students bring into those spaces. Their collective stories reveal important lessons essential to our understanding of how to develop teachers for social justice. They also provide insight for those who teach in schools and classrooms meant to educate our most vulnerable and under-served students, and may answer the question, Why doesn't anyone want to teach anymore?
Conference papers on the topic "Simultaneous sowing"
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Melnikov, D. G., I. V. Ignatenko, Y. A. Tsarev, and D. I. Vivchar. "ANALYSIS OF DESIGN AND TECHNOLOGICAL SOLUTIONS OF MACHINES FOR STRIP SOWING." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.32-34.
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A General analysis of the design and technological solutions of machines for strip sowing is given. The task is to find a middle ground between constructive and technological solutions and zonal conditions that would ensure high productivity of the cultivated crop at minimal cost. The analysis shows that a promising direction is the use of combined aggregates designed for surface tillage, both for sowing grain crops and for row crops, with simultaneous application of mineral fertilizers and harrowing.
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Cujbescu, Dan, Gheorghe Bolintineanu, Iuliana Gageanu, and Catalin Persu. "Determination of work indices for installation for simultaneously filling pots with nutritive mixtures and sowing." In 17th International Scientific Conference Engineering for Rural Development. Latvia University of Agriculture, 2018. http://dx.doi.org/10.22616/erdev2018.17.n012.
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Evglevskii, R. O., and V. P. Lavrentev. "Use of the device for introducing starter and main fertilizer simultaneously with the sowing of cereal crops." In ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ. НИЦ «Л-Журнал», 2018. http://dx.doi.org/10.18411/lj-12-2018-142.
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