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Full-Text Articles in Plant Sciences
Agronomic Performance Of Five Varieties Of Forage Grasses Inroduced In Carmen Pampa, Province Of Nor Yungas, La Paz, Joel Eliseo Bautista Vargas
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). …
Agronomic Evaluation And Comparison Of The Yield Of Six Multiannual Forage Species, Under Dry Land Conditions In The Ingavi Province, Freddy Óscar Paye Paye
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. …
Evaluation Of The Seed Production Of Tall Grasses Tolerant To Drought And Salinity In The Tamborada Region - Cochabamba, Magali Vallejos Arnez
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.
Agronomical Evaluation Of Six Species Of Forage Grass Tolerant To Salinity In The Tamborada Region, Bladimir Vargas Rojas
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.
Differential Salt Tolerance Of Hordeum Jubatum, Agropyron Trachycaulum, And Their Natural Hybrid Elymus Macounii, Marian Lucy Hanna
Differential Salt Tolerance Of Hordeum Jubatum, Agropyron Trachycaulum, And Their Natural Hybrid Elymus Macounii, Marian Lucy Hanna
Theses and Dissertations
Because plants show a wide range of variation in growth in the presence of excessive concentrations of soluble salts in the soil, this study was undertaken to determine the effects of various concentrations of NaCL and Na2SO4 on the growth and development of Hordeum jubatum, Agropyron trachycaulum, and the natural hybrid of these two plants, Elymus macounii.
Effects Of Overgrazing On The Mortality Of Desert Browse Of The Utah West Desert, Charles W. Menzies
Effects Of Overgrazing On The Mortality Of Desert Browse Of The Utah West Desert, Charles W. Menzies
Theses and Dissertations
During the summer of 1934 this investigation was conducted to determine the effect of overgrazing on the mortality of desert browse in the vicinity of the Desert Range Branch experiment station. Range lands of western United States have, as a whole been subjected to overgrazing. Utah has about 24 million acres of public acres of public domain that can only be utilized from grazing. An effort has been made to put this area under control. The "Taylor Grazing Act" passed by Congress June 28, 1934 is a big step in the direction of the control of this vast area of …