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Plant Sciences

Brigham Young University

Bolivia

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Agronomic Performance Of Five Varieties Of Forage Grasses Inroduced In Carmen Pampa, Province Of Nor Yungas, La Paz, Joel Eliseo Bautista Vargas Jan 2010

Agronomic Performance Of Five Varieties Of Forage Grasses Inroduced In Carmen Pampa, Province Of Nor Yungas, La Paz, Joel Eliseo Bautista Vargas

Theses and Dissertations

This study was done with the objective of evaluating the agronomic performance of five varieties of forage grasses introduced to the community of Carmen Pampa in the province of Nor Yungas, La Paz from 2005-2006. The average temperature during the study was 11.93ºC and the average precipitation was 801.75 mm. The trial was done with a design of randomized blocks having five species and six repetitions. The species studied were: Panicum virgatum, Sorghastrum nutans, Andropogon gerardii, Tripsacum dactyloides, and Eragrostis curvula. Variables evaluated were: plant height (cm), coverage (%), number of plants, bunches of florets, and dry matter yield (kg/ha). …


Production Of The Edible Mushroom (Agaricus Sp.) Under Laboratory Conditions For Their Multiplication In Different Culture Media, Mercedes Victoria Galeón Alcón Jan 2009

Production Of The Edible Mushroom (Agaricus Sp.) Under Laboratory Conditions For Their Multiplication In Different Culture Media, Mercedes Victoria Galeón Alcón

Theses and Dissertations

Edible mushroom production has two different stages: the vegetative stage and the fruiting stage. The vegetative phase is performed in a biotechnology laboratory and covers the technique for obtaining “spawns”, which parameters include the multiplication and reproduction of the mycelium. The fruiting phase begins with the appearance of edible mushrooms and includes everything that occurs outside the laboratory. In our country, production of edible mushrooms is limited and generally unknown. So, in this study, the vegetative phase was divided into two stages and conducted in the laboratory. Stage 1: We inoculated spores and implants of the edible mushroom species Agaricus …


Resistance Of Different Tomato Varieties (Lycopersicon Esculentum) To Late Blight (Phytophthora Infestans) In Laboratory Conditions At Uac Carmen Pampa, In The Province Of Nor Yungas, Department Of La Paz, Andrez Faustino Florez Paxi Jan 2008

Resistance Of Different Tomato Varieties (Lycopersicon Esculentum) To Late Blight (Phytophthora Infestans) In Laboratory Conditions At Uac Carmen Pampa, In The Province Of Nor Yungas, Department Of La Paz, Andrez Faustino Florez Paxi

Theses and Dissertations

In order to respond to the low economic and harvesting yields caused by diseases that attack the tomato, we considered using tomato varieties resistant to late blight (Phytophthora infestans) of tomato (Lycopersicon esculentum) and potato (Solanum tuberosum). The evaluation of the percentage of infestation was performed with tomato leaflets over a 168 hour period. The percentage of infestation was recorded every eight hours from the time of inoculation until maximum infestation was reached. The methodology applied was at random and included six treatments and five replications. The experiment consisted of collecting healthy leaflets from five improved varieties and one local …


Response Of Three Ecotypes Of Maca (Lepidium Meyenii Walp.) To Five Levels Of Ovine Manure In The Community Of Yampupata (Manco Kapac Province - La Paz), Sabina Quispe Paye Jan 2007

Response Of Three Ecotypes Of Maca (Lepidium Meyenii Walp.) To Five Levels Of Ovine Manure In The Community Of Yampupata (Manco Kapac Province - La Paz), Sabina Quispe Paye

Theses and Dissertations

This study was conducted in the community of Yampupata, in the municipality of Copacabana, in the Manco Kapac province, La Paz, to an altitude of 3841 m.a.s.l, agricultural campaign 2003-2004. The purpose of the study was to determine and compare the fenological stages (germination, growth, leafing, and harvesting), hypocotyl yield (dry and fresh), classification of the hypocotyl (diameter, length, etc.), and the economical evaluation as well. The experiment set up was installed in the lower region of the community, dedicated to agriculture, performing all the aforementioned activities together for the period of a year. The experimental design was of Random …


Agronomic Evaluation And Comparison Of The Yield Of Six Multiannual Forage Species, Under Dry Land Conditions In The Ingavi Province, Freddy Óscar Paye Paye Jan 2006

Agronomic Evaluation And Comparison Of The Yield Of Six Multiannual Forage Species, Under Dry Land Conditions In The Ingavi Province, Freddy Óscar Paye Paye

Theses and Dissertations

The agronomical evaluation and the comparative work of six multiannual forage species was conducted in the facilities of the Benson Institute, in the community of Contorno de Letanias, Ingavi province, La Paz. The objectives were to evaluate the agronomic behavior, as well as to evaluate the dry matter (DM) yield of six multiannual forage species (grasses) under local conditions, and to determine the partial cost of production of the studied species. The annual mean temperature was 9.14°C, and 517.6 mm of precipitation. The test was conducted under the random block design test, with six different forage species, and three repetitions. …


Energy Value In Llamas (Lama Glama) Fed With Alfalfa Hay (Modicago Sativa) And Barley (Hordeum Vulgare) For Apparent Digestibility In Vivo In The National Camelid Germplasm Bank (Ceac), Edwin Gonzalo Ugarte Huanca Jan 2006

Energy Value In Llamas (Lama Glama) Fed With Alfalfa Hay (Modicago Sativa) And Barley (Hordeum Vulgare) For Apparent Digestibility In Vivo In The National Camelid Germplasm Bank (Ceac), Edwin Gonzalo Ugarte Huanca

Theses and Dissertations

In this experiment, we used four male llamas that were three to four years of age from the Khara race. They were divided into two ad libitum feeding groups. The digestible energy (ED) was determined using samples that were sent to the laboratory. These samples were derived from a conventional in vivo assay using the method of total fecal collection in order to determine the difference between energy consumed and energy excreted. Metabolizable energy was calculated by deducting digestible energy, energy loss in the urine and energy loss in the gases (methane). Urinary energy was determined through the measurement of …


Agronomic Growth Characteristics Of Two Varieties Of Baby Carrots (Daucus Carota L.) At Three Planting Densities In Walipini (Ingavi Province), María Eugenia Valdez Cuba Jan 2006

Agronomic Growth Characteristics Of Two Varieties Of Baby Carrots (Daucus Carota L.) At Three Planting Densities In Walipini (Ingavi Province), María Eugenia Valdez Cuba

Theses and Dissertations

Our objective is to study the agronomic growth characteristics of two varieties of baby carrots at three planting densities. The study site is in the area of Walipini, town of Lentanias, province of Ingavi, department of La Paz, Bolivia. In this investigation, the two varieties of baby carrots used were ‘Amsterdam Forcing 3-Minicor’ and ‘Thumbelina’ (Daucus carota var. sativus). Both varieties were planted at densities of 333 plants/m2, 166 plants/m2 and 111 plants/m2 with a planting interval of two days. Statistical differences were observed for the following variables: plant height, root length, root diameter, base diameter, leaf yield, and root …


Evaluation Of The Seed Production Of Tall Grasses Tolerant To Drought And Salinity In The Tamborada Region - Cochabamba, Magali Vallejos Arnez Jan 2006

Evaluation Of The Seed Production Of Tall Grasses Tolerant To Drought And Salinity In The Tamborada Region - Cochabamba, Magali Vallejos Arnez

Theses and Dissertations

This study was conducted on plots established by the Benson Institute in the Tamborada region of Cochabamba, Bolivia. The objective of the study was to evaluate the seed production of tall grasses that are tolerant to drought and salinity. A design of randomized blocks in divided plots with and without fertilizer was used. The results showed that the species with the greatest number of stems and inflorescence was Bromus inermis with 10.9 and 88.67 respectively. It was determined that fertilization has an effect on plant height. Furthermore, the species with the greatest seed yield was Festuca arundinacea with 30.4 kg/ha.


Apparent Digestibility In Lamas (Lama Glama), Fed With Brazilian Grass And Wheat In The C.E.A.C., William Edson Velez Contacayo Jan 2006

Apparent Digestibility In Lamas (Lama Glama), Fed With Brazilian Grass And Wheat In The C.E.A.C., William Edson Velez Contacayo

Theses and Dissertations

Considering the activity of introducing genetic resources with a high potential for yield, and with a wide adaptation range, it is possible to strengthen the cattle production system, through the production of adequate forage in quality, and quantity. Brazilian grass was introduced to Bolivia in 1974 for demonstrating excellent forage characteristics, and great adaptation qualities to the different ecosystems of the Andes. The material was introduced through the Experimental Station of Patacamaya, with their material supplied through the Experimental Station of Obonuco (Colombia). The following study was conducted at the Agropecuary Experimental Center of Condori, located 49 km. north of …


Agronomic Performance Of Two Baby Lettuce Varieties (Lactuca Sativa L.) At Three Planting Densities Using Panqar Huyus In The Ingavi Province, Francisco Javier Orruel Fusco Jan 2005

Agronomic Performance Of Two Baby Lettuce Varieties (Lactuca Sativa L.) At Three Planting Densities Using Panqar Huyus In The Ingavi Province, Francisco Javier Orruel Fusco

Theses and Dissertations

This study was conducted in the experimental unit of the Benson Agriculture and Food Institute, which is located in the Letanias community of the Ingavi province in the department of La Paz. Our objective was to compare the agronomic performance of two baby lettuce varieties (Lactuca sativa L.) at three planting densities in panqar huyus. In order to provide the rural farmer communities of Contorno Letanias and Contorno Medio a possible cost-effective alternative and to employ the use of moderate environments called panqar huyus, we introduced two varieties of baby lettuce: 1) Little Gem in seed form and 2) Tom …


Evaluation Of The Agronomic Performance Of Six Varieties Of Peanut (Arachis Hypogaea L.) In The St. Felix Community Of The Coroico Township (Nor Yungas-La Paz), Viviana Marleni Quisbert Jan 2005

Evaluation Of The Agronomic Performance Of Six Varieties Of Peanut (Arachis Hypogaea L.) In The St. Felix Community Of The Coroico Township (Nor Yungas-La Paz), Viviana Marleni Quisbert

Theses and Dissertations

The peanut is an important crop in most countries due to its industrial, nutritional, and pedological potential. It grows well in subtropical areas. This study was planned based on the weather characteristics of the Yungas and the St. Felix community. A completely randomized block design with 6 treatments and 3 repetitions was used. An analysis of variance and a Tukey test were used for statistical analysis of the variables. With respect to time required for maturation, the Coloradito Palmar variety was most premature with a time of 134 days while the Local variety took 177 days to mature, which is …


Development Of A Process Of Addition Of Tricalcium Phosphate From Burnt Phosphate Rock In Feed For Animal Nutrition, Luis Fernando Nogales Grágeda Jan 2005

Development Of A Process Of Addition Of Tricalcium Phosphate From Burnt Phosphate Rock In Feed For Animal Nutrition, Luis Fernando Nogales Grágeda

Theses and Dissertations

This study took place in Bolivia with the purpose of using thermally treated Capinota phosphate rock as a phosphorous supplement in balanced feed diets. The objective was to produce a natural phosphate substance that would be more easily accessible to the local population than commercial feed supplements. An additional objective of this study was to increase the availability of the low-fluoride phosphorous. The biological assays indicated that the diet with the added burned phosphoric rock produced similar yields to those using a commercial feed supplement (dicalcium phosphate). This indicates that the locally manufactured product, by partial acidification, can compete with …


Agronomical Evaluation Of Six Species Of Forage Grass Tolerant To Salinity In The Tamborada Region, Bladimir Vargas Rojas Jan 2005

Agronomical Evaluation Of Six Species Of Forage Grass Tolerant To Salinity In The Tamborada Region, Bladimir Vargas Rojas

Theses and Dissertations

Six forage grass species from the United States were evaluated for salinity tolerance and growth performance. A randomized block design was used with six repetitions of five furrows each to maintain experimental consistency. The study was conducted in the Tamborada region of Cochabamba, Bolivia from December 2003 through June 2004. Results indicated that significant differences exist between species (Pr<0.01). The species Elymus cinereus and Agropyron elongatum demonstrated the best performance regarding plant height, achieving heights of 35.4 cm and 32.7 cm respectively. Festuca arundinacea and Agropyron elongatum obtained larger percent coverage than the other species with 79.59% and 76.53% respectively. These species also exceed the others in production of green forage (1500.00 kg/ha and 13985.80 kg/ha) as well as in production of dry matter (5000.70 kg/ha and 4862.85 kg/ha). They are recommended for production in the region of Tamborada, Cochabamba, Bolivia.


Evaluation Of Agronomic Performance Of Forage Grasses In Tiahuanaco, Justiniano Mamani Condori Jan 2004

Evaluation Of Agronomic Performance Of Forage Grasses In Tiahuanaco, Justiniano Mamani Condori

Theses and Dissertations

Most families in the area of Tiahuanaco, Bolivia participate in livestock production, mainly cattle breeding. The primary feed sources for livestock in this area are native grasses, barley, and, to a smaller degree, oats. These grasses have low yield because of climate and soil conditions. This area does not have enough forage, especially during the dry season, and the animals are not regularly fed during the year. Consequently, animal production is low. This research was conducted during 2001 and 2002 at the Bolivian Catholic University campus, Farmer’s Academic Unit of Tiahuanaco, Ingavi Province, La Paz, Bolivia. Study site locations were …


Evaluation Of Quinoa (Chenopodium Quinoa Willd) At Different Spacings Between Furrows And Plants In The Mamani Community, José Ferrufino Miranda Jan 2003

Evaluation Of Quinoa (Chenopodium Quinoa Willd) At Different Spacings Between Furrows And Plants In The Mamani Community, José Ferrufino Miranda

Theses and Dissertations

This study addressed spacing between furrows and plants in the cultivation of the quinoa variety Patacamaya. This study took place from 1999 to 2000 in the Mamani community, Ingavi, La Paz, Bolivia. The Patacamaya variety is a cross between Samaranti (sweet) and Kaslala (bitter), with a vegetative cycle of 145 days (semi-early). It has large grains, is sweet, and has a high grain yield. The spaces between furrows were 40, 60, and 80 cm in an experimental design of randomly divided plots with four repetitions. The spaces between furrows were implemented in large plots and the plant spaces as sub-treatments …


Analysis Of Genetic Variability Of Quinoa (Chenopodium Quinoa Wild.) Germ Plasm Around Lake Titicaca, Milton Víctor Pinto Porcel Jan 2002

Analysis Of Genetic Variability Of Quinoa (Chenopodium Quinoa Wild.) Germ Plasm Around Lake Titicaca, Milton Víctor Pinto Porcel

Theses and Dissertations

With the goal of analyzing the genetic variability of quinoa (Chenopodium quinoa Willd) germ plasm around Lake Titicaca, which is conserved in the National Bank of High Andean Grains of the PROINPA Altiplano Regional Foundation, the agromorphological behavior of 432 quinoa samples from the surrounding area (both Bolivian and Peruvian) were characterized and evaluated. This activity occurred at agricultural step 99/2000 of Belén Agricultural Station (16°1' South by 68°42' West), with the San Andrés Higher University Faculty of Agronomy, which because of its proximity to the lake represents climate conditions like those of the studied material's origin. In order to …


Technological Processing Of The Tomato (Lycopersicum Esculentum) And The Project Of Industrial Viability, Luis Alberto Rico Aranibar Jan 1998

Technological Processing Of The Tomato (Lycopersicum Esculentum) And The Project Of Industrial Viability, Luis Alberto Rico Aranibar

Theses and Dissertations

Technological Processing of the Tomato (Lycopersicum esculentum) and the Project of Industrial Viability by Luis Alberto Rico Arabinar. The present investigation was carried out to determine the aptitude of two varieties of tomatoes in the process of manufacturing concentrations, as well as quantify its loses and performance and evaluate the acceptance and the quality of the product through organoleptic and microbiological analysis. This consists of two parts: First- The laboratory investigation consisted in the elaboration of tomato concentrations. This was done with two varieties, Rio Fuego and Santa Clara, three soluble solid concentrations (10, 20, and 30º brix), and two …