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1
artículo
Publicado 2017
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Corn (Zea mays L.) is a cereal of global importance for its different industrial uses and nutritive value. Like other crops, it is affected by pests, including nematodes, whose presence in the maize crop causes a decrease in yields, so the present work is presented. In order to determine the population density of nematodes associated with maize cultivation in the regions of Puno and Cusco; For which 121 soil samples were collected during the 2015-2016 campaign in the Puno Region, in the districts of Chupa, Sandia, San Juan del Oro, Cuyocuyo, Ayapata, Ollachea and San Gabán; And 30 samples from the Cusco Region, in the districts of Pisac and Urubamba. Were identified the genera genera Helicotylenchus spp. and verified. (32-100%), Mesocriconema spp. (33.3-63.8%), Globodera spp. (96-100%), Xiphinema spp. (11-36.6%), Rotylenchus spp. (2...
2
artículo
Publicado 2017
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Corn (Zea mays L.) is a cereal of global importance for its different industrial uses and nutritive value. Like other crops, it is affected by pests, including nematodes, whose presence in the maize crop causes a decrease in yields, so the present work is presented. In order to determine the population density of nematodes associated with maize cultivation in the regions of Puno and Cusco; For which 121 soil samples were collected during the 2015-2016 campaign in the Puno Region, in the districts of Chupa, Sandia, San Juan del Oro, Cuyocuyo, Ayapata, Ollachea and San Gabán; And 30 samples from the Cusco Region, in the districts of Pisac and Urubamba. Were identified the genera genera Helicotylenchus spp. and verified. (32-100%), Mesocriconema spp. (33.3-63.8%), Globodera spp. (96-100%), Xiphinema spp. (11-36.6%), Rotylenchus spp. (2...
3
artículo
Publicado 2017
Enlace
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Corn (Zea mays L.) is a cereal of global importance for its different industrial uses and nutritive value. Like other crops, it is affected by pests, including nematodes, whose presence in the maize crop causes a decrease in yields, so the present work is presented. In order to determine the population density of nematodes associated with maize cultivation in the regions of Puno and Cusco; For which 121 soil samples were collected during the 2015-2016 campaign in the Puno Region, in the districts of Chupa, Sandia, San Juan del Oro, Cuyocuyo, Ayapata, Ollachea and San Gabán; And 30 samples from the Cusco Region, in the districts of Pisac and Urubamba. Were identified the genera genera Helicotylenchus spp. and verified. (32-100%), Mesocriconema spp. (33.3-63.8%), Globodera spp. (96-100%), Xiphinema spp. (11-36.6%), Rotylenchus spp. (2...
4
artículo
Publicado 2017
Enlace
Enlace
Corn (Zea mays L.) is a cereal of global importance for its different industrial uses and nutritive value. Like other crops, it is affected by pests, including nematodes, whose presence in the maize crop causes a decrease in yields, so the present work is presented. In order to determine the population density of nematodes associated with maize cultivation in the regions of Puno and Cusco; For which 121 soil samples were collected during the 2015-2016 campaign in the Puno Region, in the districts of Chupa, Sandia, San Juan del Oro, Cuyocuyo, Ayapata, Ollachea and San Gabán; And 30 samples from the Cusco Region, in the districts of Pisac and Urubamba. Were identified the genera genera Helicotylenchus spp. and verified. (32-100%), Mesocriconema spp. (33.3-63.8%), Globodera spp. (96-100%), Xiphinema spp. (11-36.6%), Rotylenchus spp. (2...
5
tesis de grado
Publicado 2019
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Los bioestimulantes son una fuente de nutrientes esenciales para el desarrollo fisiológico de las plantas, aquellos que provienen de extractos vegetales y se ha demostrado mediante bioensayos, que pueden inducir la producción de auxinas y citoquininas naturales en las plantas. El objetivo fue evaluar el efecto del Bioestimulantes Mixhor-Plus en el rendimiento de maíz morado. Se realizó en las condiciones de Panao posicionado a 9°59'49" LS, 75°59'42" LO y a 2 515 msnm de altitud. Se instaló el cultivo bajo el diseño BCA con cuatro bloques y cuatro tratamientos: Sin aplicación (T1), 1.00 ‰ (T2), 1.50 ‰ (T3) y 2.00 ‰ (T4). Los resultados del trabajo de investigación indica que el tratamiento T4 (dosis 2.00‰) produjo efecto significativo en la altura de planta (2.39 m), altura de inserción de la primera mazorca (1.20 m), número de granos por hilera (26.13), longitud (15.8...
6
tesis de grado
Publicado 2019
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El Perú desde 1971 importa maíz amarillo duro para satisfacer la creciente y sostenida demanda para satisfacer nuestro mercado interno que en la actualidad está entre el 65% y 70%. Por esta razón es que el uso de híbridos superiores de maíz, especialmente los biparentales, es la mejor alternativa para lograr incrementos significativos en la producción nacional, especialmente en las áreas maiceras de la costa peruana. El presente trabajo de investigación fue conducido en el Fundo UPAO II de la Universidad Privada Antenor Orrego, Trujillo, Perú, con el objetivo de estudiar el comportamiento de seis híbridos de maíz amarillo duro, de los cuales cinco son híbridos simples: INIA 605 (H1), Atlas 105 (H2), Megahíbrido (H3), Tropi101 (H4), Insignia 860 (H5), y DK7500 (H6) que es un híbrido triple. Los ANAVAs detectaron diferencias significativas en rendimiento de grano, altura de ...
7
tesis de grado
Publicado 2019
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In the present investigation is to evaluate the salinity conditions of the property María Laura located in Los Cerritos, Virú valley, with aims of recovering 100% of the soil, which has been affected by salinity, to give a better production of the crop and improve the quality of the soil. The best alternative of solution that allows to establish in an economical, practical and simple way to recover the soil is through the application of irrigation water, since the water is economical in this area of the Virú valley, and since its water table is below of 2.50 meters does not need another recovery alternative such. Previously, laboratory analyzes were carried out with the purpose of detecting the level of salinity found in the terrain, these tests were carried out taking into account the indicated parameters. With the results obtained from soil samples (pH, texture, C.E., S.A.R., E.S.P....
8
tesis de grado
Publicado 2014
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The present experimental work called "Comparative twenty six hard yellow maize hybrids (Zea mays L.) for forage purposes in Laredo, Trujillo" was installed in the town center of Santo Domingo in April 2013, it was used 22 experimental hybrids, 3 sales and 1 record from the cooperative program corn Universidad Nacional Agraria La Molina and marketer Pro Semillas S.A.C, the objectives in this research were to measure and compare the forage characteristics of twenty hybrids, identifying developmental stages and determine the experimental hybrids with greater forage potential. Conducting the experiment was conducted in a commercial field, under a system of surface irrigation in a sandy loam soil, poor in organic matter, rich in phosphorus available and medium available potassium, pH slightly acid 6.1, electrical conductivity acceptable 0.4 dS.m-1 and a dose of NPK 260-100-50. Statistical com...
9
artículo
Publicado 2016
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El objetivo del presente trabajo fue evaluar las características nutritivas del ensilaje mixto de maíz chala y broza de espárrago con melaza-urea e inóculo bacterial para suplementar la alimentación de cabras en manejo semi - extensivo. Para el ensilado se utilizó baldes plásticos de 12 kilos de capacidad y se mantuvieron cerrados por un periodo de 40 días. Los tratamientosT0 (50 % de maíz chala y 50% de broza de esparrago), T1 (T0 más la adición de 3% de melaza y 0.5% de úrea) y T2 (T1 más 0.02% de inóculo) fueron distribuidos en un diseño completamente aleatorizado con tres repeticiones .Al finalizar el periodo de ensilaje se tomaron muestras para determinar materia seca, proteína, grasa, fibra cenizas, fibra detergente neutra y fibra detergente ácida. Así mismo, se evaluó pH, color olor, textura y humedad. El análisis de varianza no mostró diferencias estadística...
10
artículo
Publicado 2016
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El objetivo del presente trabajo fue evaluar las características nutritivas del ensilaje mixto de maíz chala y broza de espárrago con melaza-urea e inóculo bacterial para suplementar la alimentación de cabras en manejo semi - extensivo. Para el ensilado se utilizó baldes plásticos de 12 kilos de capacidad y se mantuvieron cerrados por un periodo de 40 días. Los tratamientosT0 (50 % de maíz chala y 50% de broza de esparrago), T1 (T0 más la adición de 3% de melaza y 0.5% de úrea) y T2 (T1 más 0.02% de inóculo) fueron distribuidos en un diseño completamente aleatorizado con tres repeticiones .Al finalizar el periodo de ensilaje se tomaron muestras para determinar materia seca, proteína, grasa, fibra cenizas, fibra detergente neutra y fibra detergente ácida. Así mismo, se evaluó pH, color olor, textura y humedad. El análisis de varianza no mostró diferencias estadística...
11
tesis de grado
Publicado 2021
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Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Suelos
12
tesis de grado
Publicado 2022
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Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Horticultura
13
tesis de grado
Publicado 2017
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The present research aimed to evaluate the photoprotective effect of Zea mays L. "purple maize" and Theobroma cacao L. "cacao" in the spore-crystal complex of Bacillus thuringiensis subsp. israelensis microencapsulated in calcium alginate. Three formulations of Bacillus thuringiensis subsp. israelensis, two with Zea mays L. "purple maize" and Theobroma cacao L. 0.1% "cocoa" and one without UV photoprotector added and they were put in plastic containers of 1 liter capacity, which were filled with 500 mL of distilled water, all treatments were performed in triplicate and exposed to UV radiation from direct solar radiation during days 12 to 17 of July 2017. At 0, 24, 48, 72, 96 and 120 hours of 25 larvae of Ae. aegypti in stage III to each of the treatments and mortality was recorded at 24 hours. The results show significant effects on the wide comparisons of all formulations except for the...
14
tesis de grado
Publicado 2018
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Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Fitotecnia
15
tesis de grado
Publicado 1990
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El presente trabajo se realizó entre Noviembre de 1988 -a marzo de 1909 en el Distrito de Morales, Sector "Cumbacillo", Provincia y departamento de San Martín, situado a 60° 29’ Latitud Sur, 76 ° 21' Longitud Oeste y a una altitud de 300 metros sobre el nivel del mar. Se evaluó el rendimiento y las características vegetativas complementarias de líneas, híbridos y variedad de maíces tropicales, empleando el diseño estadístico de Látice Simple Rectangular parcialmente balanceado con 56 tratamientos y 2 repeticiones, cuyos resultados fueron analizados mediante la prueba de Variancia y la Significación de la Diferencia Mínima Significativa al 5/. de probabilidad. El suelo experimental fue de origen aluvial de superficie plana y mecanizada, de reacción ligeramente ácida (pH 6. 5), con bajos contenidos de materia orgánica (1.5%), Nitrógeno, Fósforo (3.0 p.p.m) y normal de ...
16
tesis de grado
Publicado 2000
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In order to evaluate the performance of 10 simple hybrid, plus 2 yellow corn witnesses under irrigation of different treatments. a trial randomized complete block at the experimental station "El Porvenir '', located at Km 14.5 of the Marginal Highway South (Tarapoto -Juanjui). Juan Guerra District, San Martin Province and Region (PERU) was performed. geographically located by the coor-ordinates following: West Longitude 76 ° 5 'south latitude 06º 35' and alti-tude of 356 m The standard density planting for treatments under study was 62 500 plants / hectare. high quality seed genetics pro-desirable Germplasm Bank Maize Research Program of the Experimental Station "El Porvenir '' was used. The soil is characterized by a clay loam texture, with a high percentage of organic matter (3.22%). The dose of fertilizer applied was 120-80-60 (N.P.K.), applying nitrogen dose into two fractions. The...
17
tesis de grado
Publicado 2009
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Global warming is an alarming phenomenon, with disastrous consequences, which causes high concentrations of gases "greenhouse" (especially carbon dioxide, CO2), resulting primarily from human activity are. With the signing of the Kyoto Protocol in 1997, staying established the Framework Convention on Climate Change UN (UNFCCC). The objective of the Kyoto Protocol is to reduce emissions of global greenhouse gases on 1990 levels for the period 2008-2012 by 5.2%. This contains legally binding targets for industrialized countries to reduce emissions of six greenhouse gases of human origin such as carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), plus three fluorinated industrial gases: hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulfur hexafluoride. Thus began in all signatory countries a new stream of research aimed at estimating carbon sequestration by different crop ...
18
artículo
Publicado 2016
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In mass production, the carbon nitrogen (C: N) ratio affects the growth and production of conidia. The objective was to evaluate B. bassiana and M. anisopliaenativos in solid substrates rice (Oryza sativa L.) and corn (Zea mays L.) enriched with nutritional supplements, molasses (source-carbon) in concentration (2.5-5.0 g ), amaranth and soybean meals, milk powder and yeast (nitrogen sources) of concentration (0.25-0.50 g), compared with controls. The C: N ratio was 10: 1. The experimental design was Categorical Multi-Factorial and the technique, observation. The mass production of fungi was solid fermentation in 40 treatments with 3 repetitions; the count of conidia in the Neubauer chamber; and, the analysis of results with Statgraphics Plus-Ver.5.1, IBM-SPPS-Ver.22 and Excel-2013. The best production of B. bassiana in rice was T13 (molasses-2.5 and milk-0.25) g with an average of 1.89 ...
19
artículo
Publicado 2016
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In mass production, the carbon nitrogen (C: N) ratio affects the growth and production of conidia. The objective was to evaluate B. bassiana and M. anisopliaenativos in solid substrates rice (Oryza sativa L.) and corn (Zea mays L.) enriched with nutritional supplements, molasses (source-carbon) in concentration (2.5-5.0 g ), amaranth and soybean meals, milk powder and yeast (nitrogen sources) of concentration (0.25-0.50 g), compared with controls. The C: N ratio was 10: 1. The experimental design was Categorical Multi-Factorial and the technique, observation. The mass production of fungi was solid fermentation in 40 treatments with 3 repetitions; the count of conidia in the Neubauer chamber; and, the analysis of results with Statgraphics Plus-Ver.5.1, IBM-SPPS-Ver.22 and Excel-2013. The best production of B. bassiana in rice was T13 (molasses-2.5 and milk-0.25) g with an average of 1.89 ...
20
artículo
Publicado 2024
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The chemical characteristics of Cenchrus clandestinus grass, nutritional base in dairy production systems, demand the energy supplementation. Corn grain is the most used food for this purpose, but considering its demand and prices, the objective of this work was to evaluate its partial replacement by alternative non-fibrous carbohydrates sources on methane emissions, energy and nitrogen balance and productive performance of dairy cows. Sixteen multiparous Holstein cows were fed Cenchrus clandestinus plus one of four concentrate supplements formulated with corn (Zea mays) or a partial replacement of corn with sorghum (Sorghum vulgare), cassava (Manihot esculenta) or citrus pulp (Citrus sp.). Inclusion of sorghum, cassava or citrus pulp did not affect dry matter intake, dry matter digestibility, enteric methane emissions, energy and nitrogen balance, milk yield or composition. The results...
