scholarly journals EFECTO DE LA APLICACIÓN DE YESO EN EL CULTIVO DE GIRASOL (Helianthus annus) Y MAÍZ (Zea mays) EN UN SUELO OXISOL (Rhodic Kandiudox), YGUAZÚ, ALTO PARANA, PARAGUAY

2021 ◽  
pp. 156-168
Author(s):  
Kentaro Tomita
Keyword(s):  
Zea Mays ◽  
Helianthus Annus

Weed Control and Rotational Crop Response with AC 222,293

1987 ◽  
Vol 1 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Stephen D. Miller ◽  
Harold P. Alley
Keyword(s):  
Zea Mays ◽  
Hordeum Vulgare ◽  
Phaseolus Vulgaris ◽  
Avena Fatua ◽  
Crop Response ◽  
Leaf Stage ◽  
Wild Oats ◽  
Helianthus Annus ◽  
Rotational Crop ◽  
Pinto Beans

In the field, eight barley (Hordeum vulgare L.) cultivars tolerated postemergence applications of AC 222,293 [a mixture of methyl 6 and 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl) m- and p-toluate] at 0.4 to 1.4 kg/ha. AC 222,293 at 0.4 kg ai/ha applied at the 1.5- to 2-leaf stage controlled wild oats (Avena fatua L. # AVEFA) 96%, whereas 0.7 kg/ha applied at the 3.5- to 4-leaf stage controlled wild oats only 93%. Sugarbeets (Beta vulgaris L.) but not alfalfa (Medicago sativa L.), corn (Zea mays L.), pinto beans (Phaseolus vulgaris L.), or sunflower (Helianthus annus L.), were injured when planted 6 to 8 months after fall applications of AC 222,293 at 0.4 to 1.1 kg/ha.

Advantages of the one-wheeled tramline for multiple machinery widths method on sunflower (Helianthus annus L.) and maize (Zea mays L.) responses in the Argentinean Flat Pampas

2020 ◽  
Vol 196 ◽  
pp. 104462
Author(s):  
María Josefina Masola ◽  
Carlos Agustín Alesso ◽  
María Eugenia Carrizo ◽  
Gonzalo Berhongaray ◽  
Guido Fernando Botta ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Helianthus Annus ◽  
The One

scholarly journals SILAGENS DE GIRASSOL (Helianthus annus L.), MILHO (Zea mays L.) E SORGO (Sorghum bicolor (L.) Moench) PARA OVELHAS EM CONFINAMENTO

2002 ◽  
Vol 32 (2) ◽  
pp. 299-302 ◽  
Author(s):  
Edson Luis de Azambuja Ribeiro ◽  
Marco Antonio da Rocha ◽  
Ivone Yurika Mizubuti ◽  
Leandro das Dores Ferreira da Silva
Keyword(s):  
Zea Mays ◽  
Sorghum Bicolor ◽  
Zea Mays L ◽  
Helianthus Annus ◽  
Sorghum Bicolor L

Este trabalho teve como objetivo avaliar o desempenho de ovelhas recebendo silagens de milho, sorgo e girassol. Metade da matéria seca da dieta foi fornecida pelas silagens e a outra metade por uma mistura de 25% de farelo de soja e 75% de milho grão. Foram utilizadas 47 ovelhas confinadas por um período de 70 dias. As ovelhas que receberam silagem de girassol ganharam mais (P<0,01) peso diariamente (0,263kg) do que as que receberam silagens de milho (0,175kg) ou sorgo (0,171kg). Os consumos de alimento, tanto como percentagem do peso vivo, quanto por unidade de tamanho metabólico, diferiram entre os tratamentos (P<0,01), sendo maiores pelos animais tratados com silagem de milho, intermediário com silagem de girassol e menores com aqueles com silagem de sorgo. As conversões alimentares foram de 7,96; 7,26 e 6,14 (P>0,05), respectivamente, para ovelhas recebendo silagens de milho, sorgo e girassol. As ovelhas alimentadas com silagem de girassol apresentaram maior percentagem de carcaça quente (53,14%) do que aquelas com silagem de sorgo (48,13%) ou com silagem de milho (46,36%). Portanto, a silagem de girassol é superior às silagens de milho e sorgo na terminação de ovinos confinados.

scholarly journals Régimen y riesgo agroclimático de heladas en Lugo, provincia de Lugo, Galicia, España

2018 ◽  
pp. 13-18
Author(s):  
Carlos A. Vilatte ◽  
Benigno Ruiz Nogueira
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Brassica Napus ◽  
Zea Mays L ◽  
Triticum Aestivum L ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Helianthus Annus ◽  
Glycine Max L ◽  
Brassica Oleracea L

El objetivo de este trabajo fue conocer el régimen y riesgo agroclimático de heladas, por su época de ocurrencia y tipo genético, analizar su peligrosidad sobre los cultivos, y observar la tendencia en el período libre de heladas en los últimos 10 años (1996-2005), respecto del período 1975-1995, en Lugo. Se dispuso de un registro histórico de temperaturas mínimas, medidas en el abrigo meteorológico, de treinta y un años para la localidad de Lugo, Provincia de Lugo (lat.: 43° 03’ N; long.: 7° 30’ O y alt.: 480 m). Los resultados mostraron una mayor frecuencia de heladas primaverales (marzo, abril y mayo) que otoñales (octubre y noviembre). El escaso período libre de heladas, en la zona, puede resultar un impedimento para la difusión de cultivos frutícolas de hueso,  debiendo seleccionar aquellas variedades con mayor requerimiento en horas de frío.En la región, la producción hortícola prospera favorablemente, siendo los cultivos más utilizados, Col – Brassica oleracea L - y nabos (nabizas y grelos) – Brassica napus L -, en detrimento de cultivos anuales extensivos, tanto inverno primaverales, como trigo – Triticum aestivum L. o T. vulgare L. -, cebada – Hordeum vulgare L.-, o estivales como maíz – Zea mays L. -, girasol – Helianthus annus L., o soja - Glycine max L.

Ultrastructure of Plant Leaf Tissue Infected with Mite-Borne Viral-Like Pathogens

1970 ◽  
Vol 28 ◽  
pp. 178-179 ◽  
Author(s):  
O. E. Bradfute ◽  
R. E. Whitmoyer ◽  
L. R. Nault
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Electron Microscope ◽  
Hordeum Vulgare ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Leaf Tissue ◽  
Leaf Ultrastructure ◽  
Double Membrane ◽  
Aceria Tulipae

A pathogen transmitted by the eriophyid mite, Aceria tulipae, infects a number of Gramineae producing symptoms similar to wheat spot mosaic virus (1). An electron microscope study of leaf ultrastructure from systemically infected Zea mays, Hordeum vulgare, and Triticum aestivum showed the presence of ovoid, double membrane bodies (0.1 - 0.2 microns) in the cytoplasm of parenchyma, phloem and epidermis cells (Fig. 1 ).

Identification of maize mosaic virus by immunoelectron microscopy

1986 ◽  
Vol 44 ◽  
pp. 240-241
Author(s):  
O. E. Bradfute
Keyword(s):  
Zea Mays ◽  
Mosaic Virus ◽  
Immunoelectron Microscopy ◽  
Severe Disease ◽  
Maize Mosaic Virus ◽  
The World ◽  
Plant Rhabdovirus

Maize mosaic virus (MMV) causes a severe disease of Zea mays in many tropical and subtropical regions of the world, including the southern U.S. (1-3). Fig. 1 shows internal cross striations of helical nucleoprotein and bounding membrane with surface projections typical of many plant rhabdovirus particles including MMV (3). Immunoelectron microscopy (IEM) was investigated as a method for identifying MMV. Antiserum to MMV was supplied by Ramon Lastra (Instituto Venezolano de Investigaciones Cientificas, Caracas, Venezuela).

Identification of Maize Rayado Fino Virus by Immunoelectron Microscopy

1985 ◽  
Vol 43 ◽  
pp. 636-637
Author(s):  
O. E. Bradfute
Keyword(s):  
Electron Microscopy ◽  
Zea Mays ◽  
Costa Rica ◽  
Severe Disease ◽  
Rabbit Serum ◽  
Normal Rabbit Serum ◽  
Virus Particles ◽  
Far North ◽  
Maize Rayado Fino Virus ◽  
Antibody Coating

Maize rayado fino virus (MRFV) causes a severe disease of corn (Zea mays) in many locations throughout the neotropics and as far north as southern U.S. MRFV particles detected by direct electron microscopy of negatively stained sap from infected leaves are not necessarily distinguishable from many other small isometric viruses infecting plants (Fig. 1).Immunosorbent trapping of virus particles on antibody-coated grids and the antibody coating or decoration of trapped virus particles, was used to confirm the identification of MRFV. Antiserum to MRFV was supplied by R. Gamez (Centro de Investigacion en Biologia Celular y Molecular, Universidad de Costa Rica, Ciudad Universitaria, Costa Rica).Virus particles, appearing as a continuous lawn, were trapped on grids coated with MRFV antiserum (Fig. 2-4). In contrast, virus particles were infrequently found on grids not exposed to antiserum or grids coated with normal rabbit serum (similar to Fig. 1). In Fig. 3, the appearance of the virus particles (isometric morphology, 30 nm diameter, stain penetration of some particles, and morphological subunits in other particles) is characteristic of negatively stained MRFV particles. Decoration or coating of these particles with MRFV antiserum confirms their identification as MRFV (Fig. 4).

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