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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

Growing Alfalfa Seed in Arizona

Ottman, Michael 07 1900 (has links)
3 pp. / Due to worldwide shortages of non-dormant alfalfa seed, production opportunities and acreage have increased recently in Central Arizona. Seed production for profitability is challenging. Cultural practices differ from those commonly used in forage production. This article outlines management recommendations that may help to accomplish profitable seed alfalfa yields.
222

Nondormant Alfalfa Varieties for Arizona 2008

Ottman, Michael 09 1900 (has links)
2 pp. / Nondormant alfalfa varieties are adapted to mild winter areas in Arizona. An alfalfa variety should be selected based on dormancy class, potential pest problems, university yield trials, and on-farm tests. This publication contains pest resistance ratings and a summary of University of Arizona yield trials for nondormant alfalfa varieties.
223

EFFECTS OF MYCORRHIZAL FUNGI ON GROWTH, NODULATION, AND NITROGEN FIXATION OF ALFALFA (MEDICAGO SATIVA L.) SELECTED FOR HIGH AND LOW NITROGENASE ACTIVITY.

HASSAN, ALI SIDAHMED MOHMED. January 1986 (has links)
Twelve F(,1) families of alfalfa (Medicago sativa L.) plants having different potential for nitrogenase activity, and the two parental populations were tested for response to mycorrhizal inoculation in a low-phosphate soil mixture in the greenhouse. The purpose of this study was to: (a) determine the effects of vesicular-arbuscular mycorrhizae on growth, nutrition and nodulation of these 14 populations, (b) determine if differences existed between the populations with regard to several morphological characteristics, and (c) determine if certain characteristics can be transmitted across generations. The 14 populations were evaluated under four treatments: control no Myorrhizae, no Rhizobium; Rhizobium alone; Mycorrhizae alone; and the combination of Mycorrhizae and Rhizobium. The growth parameters measured differed significantly among the treatments and among the 14 populations studied, and no significant interaction between the populations and the treatments were found. The dual Mycorrhizae and Rhizobium treatment significantly increased plant height at 30 days and 60 days after planting, leaf area per plant, and plant top-dry-weight at two harvest dates. Mycorrhizal inoculation, however, decreased specific-leaf-weight significantly. Nitrogen fixation parameters such as nodule mass score, fibrous root score, and nitrogenase activity were increased significantly by the dual inoculation of mycorrhizae and rhizobium. The 14 populations differed significantly in nodule mass score, fibrous root score, and nitrogenase activity. Mycorrhizal inoculation increased nitrogen fixation more than plant growth. Correlation coefficients indicated that increased Nitrogenase activity is positively correlated with increased nodule mass, increased fibrous root mass, greater top-dry-weight, and leaf area. A step wise multiple regression showed that 49% of the variation in nitrogenase activity can be explained by the variation due to nodule mass, fibrous root mass, top-dry-weight, and leaf area. Several morphological characters showed a heritable response. Plants selected for high nitrogenase activity and high top dry weight transmitted these characteristics to their progenies.
224

Alfalfa in the Southwest

Freeman, Geo. F. 01 June 1914 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
225

Nondormant Alfalfa Varieties for Arizona 2012

Ottman, Michael J. 12 1900 (has links)
2 pp.
226

ISOLATION AND FUSION OF PROTOPLASTS FROM DIPLOID MEDICAGO SATVIA AND M. FALCATA.

Lindley, Virginia Ann. January 1983 (has links)
No description available.
227

SCREENING ALFALFAS (MEDICAGO SATIVA-FALCATA-GLUTINOSA COMPLEX) FOR ROOT-PROLIFERATING TYPES UNDER A DESERT ENVIRONMENT.

Rodrigues, Geraldo Helcio Seoldo, 1942- January 1984 (has links)
No description available.
228

CHARACTERIZATION OF SALT TOLERANCE IN ALFALFA (MEDICAGO SATIVA L.)

McKimmie, Timothy Irving, 1948- January 1986 (has links)
No description available.
229

Plan de negocios de un cultivo tradicional

Barría Meneses, Maritza Susana January 2015 (has links)
Magíster en Gestión y Dirección de Empresas / El propósito de esta investigación, sobre un plan de negocio de un cultivo tradicional, es poder verificar la factibilidad técnica-económica del cultivo (alfalfa), ya que es un nicho de negocio que debiese dar rentabilidad, sustentada en su demanda sobre todo en época de invierno. Este cultivo es de gran importancia, por su aporte nutricional para los animales, lo que se traduce en un animal mejor alimentado para el bienestar de él y del consumo humano, para el caso de los equinos, ayuda a su preparación para mejores rendimientos en competencia (rodeos, hípica u otros). La demanda de este cultivo se sustenta, principalmente, por el crecimiento esperado de la población, la que debiese ir en crecida en el mundo entero, por lo tanto se requerirá de más alimentos para la sustentabilidad de la vida humana. Por otra parte, los deportes con equinos, cada vez son más demandados (rodeo, es el segundo deporte más cotizado en Chile), por lo que se requiere de mejor alimentación, tanto para su preparación como reproducción. Se partirá con una prueba tipo piloto , realizando un cultivo de 10 hectáreas, para así ratificar la salida del producto e ir mejorando la propuesta de valor, que marcará la diferenciación frente a la competencia existente. Esperando que todo salga como se espera, se hará más extenso el cultivo e ir incrementando la participación a otras localidades cercanas, hasta poder llegar repartir a todo el país y si es necesario y posible exportar el producto (gran visión). Si bien la inversión es alta, por lo que conlleva la preparación del terreno, la plantación de las semillas debiese tener un tiempo de cultivo de 4 a 6 años, además se puede contar con la ayuda de subsidios que pueden ayudar a solventar este gasto. Una vez hecha la inversión y sembrado el cultivo, solo se debe preocupar que el terreno tenga buen drenaje y que esté bien regado; ya que la alfalfa si bien necesita de bastante agua, es importante que ésta drene bien para no ahogar la siembra y aumentar el rendimiento de ésta. Los cortes se deben hacer en forma cautelosa y en los tiempos correctos; ya que de lo contrario la alfalfa se deshidrata, cambia de color, pierde propiedades y no resulta un producto de calidad esperada. Para una mejor rentabilidad del negocio, se espera que las ventas sean mayoritariamente en época de invierno, donde escasea el producto, y las personas están dispuestas a pagar un mayor valor por fardos. Esperando ventas anuales sobre los MM$ 20 y con utilidades de más del 20% app, lo que resulta ser un negocio atractivo.
230

Isolation of the sterols of dehydrated alfalfa meal

Snavely, William Henry. January 1950 (has links)
Call number: LD2668 .T4 1950 S663 / Master of Science

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