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| Registros recuperados: 10 | |
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| Cunha,João P. A. R. da; Barizon,Robson R. M.; Ferracini,Vera L.; Assalin,Marcia R.; Antuniassi,Ulisses R.. |
| ABSTRACT Pesticide drift is an issue in modern farming, mainly for crops under constant spraying as soybeans. This study aimed at assessing drift and pest control for aerial applications in soybean crops. Hydraulic nozzles and rotary atomizers, regulated to a wide spectrum of droplet sizes, sprayed thiamethoxam plus lambda-cyhalothrin using an agricultural aircraft Ipanema 202A at volume rate of 20 L ha−1. Treatments consisted of testing two devices: a rotary cage atomizer (Micronair AU 5000) with blade angles of 65° for larger droplets, and with angle of 55° for smaller ones; and a set of adjustable nozzles (Stol model) with deflector angle of 90° for smaller droplets, and with angle of 30° for larger ones. Drift was evaluated through quantification of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural aviation; Crop protection; Exodrift; Glycine max. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300493 |
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| Cometti,Nilton Nélio; Silva,Josimar V da; Zonta,Everaldo; Cessa,Raphael MA. |
| ABSTRACT Protected cultivation has grown in Brazil. Generally, greenhouses are covered with transparent plastic film and shading screen. The plastic, over time, loses its transparency due to pollution residues, dust and other debris. The loss of transparency reduces lightness, photosynthesis and leads to losses of productivity and product quality. The losses are not always detectable by the farmer. Additionally, internal shading screens are used to reduce heating transmission to the ground. The objective of this study was to evaluate the impact of shading on lettuce crop productivity and to determine the optimum shading to reach the highest productivity. Plots were set up inside and outside the greenhouse, with four shading levels with black screens (0,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Plastic film; Crop protection; Light. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100065 |
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| Modolon,Tatiani A; Boff,Pedro; Boff,Mari Inês C; Miquelluti,David José. |
| Tomato crops (Solanum lycopersicum) under conventional production system are constantly treated against pest and diseases, with organic synthetic pesticides that are used may cause serious disturbance to environment and human health. This research was carried out in order to study the effect of homeopathic and high dilution preparations on pests and diseases management of tomato crop under organic production system. Two experiments were conducted under field conditions and one in greenhouse. All of them in randomized block design with the cultivar Santa Cruz Kada. The treatments consisted of homeopathic preparations Staphysagria, Arsenicum album, Sulphur, Arnica montana, high dilution preparations of Solanum lycopersicum and Solanum aculeatissimum, at the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; Agro-homeopathy; Crop protection. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100009 |
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| Fuglie, Keith O.; Heisey, Paul W.; King, John L.; Day-Rubenstein, Kelly A.; Schimmelpfennig, David E.; Wang, Sun Ling. |
| Meeting growing global demand for food, fiber, and biofuel requires robust investment in agricultural research and development (R&D) from both public and private sectors. This study examines global R&D spending by private industry in seven agricultural input sectors, food manufacturing, and biofuel and describes the changing structure of these industries. In 2007 (the latest year for which comprehensive estimates are available), the private sector spent $19.7 billion on food and agricultural research (56 percent in food manufacturing and 44 percent in agricultural input sectors) and accounted for about half of total public and private spending on food and agricultural R&D in high-income countries. In R&D related to biofuel, annual... |
| Tipo: Technical Report |
Palavras-chave: Agricultural biotechnology; Agricultural chemicals; Agricultural inputs; Animal breeding; Animal health; Animal nutrition; Aquaculture; Biofuel; Concentration ratio; Crop breeding; Crop protection; Farm machinery; Fertilizers; Herfindahl index; Globalization; Market share; Market structure; Research intensity; Seed improvement; Productivity Analysis. |
| Ano: 2011 |
URL: http://purl.umn.edu/120324 |
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| Roucan-Kane, Maud; Ubilava, David; Xu, Pei. |
| The objective of this paper is to determine how the firm's infrastructure, the financial characteristics of a company (net income, sales), and the organizational structure (number of acquisitions, age of establishment of the firm) affect R&D investments in the agricultural sector. We use data for companies under the SIC codes for agricultural chemicals, and crop planning and protection. The results based on analysis of 69 observations of 12 firms revealed that firm's financial and organizational infrastructure does affect its R&D expenditures. Older and larger firms tend to spend more on R&D. During the last 17 years the R&D expenditures with respect to the sales of the company have been reduced. Finally, contrary to the expectations,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: R&D; Agriculture; Chemicals; Crop planning; Crop protection; Agribusiness; Agribusiness; Research and Development/Tech Change/Emerging Technologies; A10; O32; Q16. |
| Ano: 2007 |
URL: http://purl.umn.edu/7332 |
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| Baginsky,Cecilia; Contreras,Américo; Covarrubias,José Ignacio; Seguel,Oscar; Aballay,Erwin. |
| C. Baginsky, A. Contreras, J.I. Covarrubias, O. Seguel, and E. Aballay. 2013. Control of plant-parasitic nematodes using cover crops in table grape cultivation in Chile Cien. Inv. Agr. 40(3): 547-557. A study to evaluate the effect of a three-year rotation with cover crops for the management of plant-parasitic nematodes (PPNs) was performed in two vineyards producing table grapes (Vitis vinifera L.) in a semiarid region in the north of Chile. In the first vineyard, located in Copiapó valley (trial I), the crops used in the rotations or monoculture were fava bean (Vicia faba) cv. Aguadulce, rape (Brassica napus var. napus) cv L-456, forage turnip (B. rapa var. rapa) cv. Barkant, barley (Hordeum vulgare) cv. Aurora, oat (Avena sativa) cv. Urano-INIA, and... |
| Tipo: Journal article |
Palavras-chave: Vitis vinifera; Crop protection; Nematicidal plants; Botanical nematicides. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300008 |
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| Dalazen,Giliardi; Merotto Júnior,Aldo. |
| ABSTRACT: Genetic use restriction technologies (GURTs) were developed to preserve the intellectual property of genetically modified crops (GM) and ensure the return of investments made by industry to obtain technology delivered through seeds. The aims of this review are to discuss the GURTs and analyze their possible applications in integrated management of agricultural pests. There are two classes of GURTs: T-GURTs (trait-based GURTs), wherein the generated seed are viable, but the next generation does not express the trait of agronomic interest, and V-GURT (variety-based GURTs), in which plants produce non viable seeds. However, beyond the seed protection purpose, the GURTs could have also other application to solve agronomic problems. One of the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Terminator technology; GURT; LEA promoters; IPM; Crop protection. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101909 |
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| Registros recuperados: 10 | |
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