Plant and Soil Sciences eLibrary

The Plant and Soil Sciences eLibrary is a collection of interactive animations, eLessons, video clips and quizzes. They cover topics in plant genetics, biotechnology, soil science, weed science and target audiences from high school to undergraduate and graduate students. They are also used in life long learning trainings. Teachers or self-paced learners utilize these peer-reviewed materials.

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Corn Rootworm - Part 1: Description of Corn Rootworm and Other Early Season Corn Pests
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This lesson will discuss the corn rootworm complex, which consists ofthe northern, ...

This lesson will discuss the corn rootworm complex, which consists ofthe northern, western, and southern corn rootworm, focusing on thenorthern and western species. The information in this lesson will focuson the biology of corn rootworms in the north central Corn Belt,including Iowa and Nebraska. Crop producers, crop scouts, students, andthe general public may find the information in this lesson helpful foridentifying corn rootworm, other corn pests, and the feeding damagecaused by each insect.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Auxin and Auxinic Herbicide Mechanism(s) of Action - Part 1 - Introduction
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The selective control of broadleaf weeds in cereal grain crops by auxinic ...

The selective control of broadleaf weeds in cereal grain crops by auxinic herbicides has made this group one of the most widespread and important herbicide families in use. These herbicides were the first organic herbicides developed that were selective or able to kill one group of plants, but not another (i.e. kill broadleaf, but not grass plants). This lesson will introduce the major features of these herbicides, discuss their major uses and describe the symptoms of the injury they cause as well as introduce how they kill sensitive plants.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Backcross Breeding 1 - Basic Gene Inheritance
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This lesson reviews the basics of gene inheritance. It compares plants that ...

This lesson reviews the basics of gene inheritance. It compares plants that are homozygous, heterozygous, and hemizygous for an allele and how gene expression is affected by the dominance of an allele. It also explains how to use a Punnett square to predict genotypic and phenotypic ratios of offspring.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Soils - Part 1: The Origin and Development of Soil(How Soil Gets a Life and a Name)
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In this lesson, you will gain an understanding of the five soil ...

In this lesson, you will gain an understanding of the five soil forming factors and will be able to describe how each influences soil development. You will learn to identify common parent materials, determine the age of a soil, identify the types of native vegetation associated with different soils in Nebraska and define soil horizons.[This lesson, as well as the other nine lessons in the Soils series, is taken from the "Soils Home Study Course," published in 1999 by the University of Nebraska Cooperative Extension.]

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Analysis of Augmented Block Design Using R Part 1: An Introduction to an Augmented Design Approach in Plant Breeding
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Ashu GuruUniversity of Nebraska Raikes SchoolDeana Namuth-CovertUniversity of Nebraska Dept of Agronomy ...

Ashu GuruUniversity of Nebraska Raikes SchoolDeana Namuth-CovertUniversity of Nebraska Dept of Agronomy and Horticulture2014When planning any science research project to gain information for a particular goal or objective, much thought is placed into what is called the experimental design or layout of the experiment. This is important to ensure the researcher is able to obtain useful data which can later be analyzed and provide information as to whether or not the scientific hypothesis being tested is supported or rejected.  In this eLesson series we will look at a plant breeding experiment which uses the Augmented Design and utilize tools in R to analyze the data.   

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Mecanismo(s) de Acción de las Auxinas y los Herbicidas Auxínicos - Parte 1- Introducción
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Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales ...

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales utilizando herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso más ampliamente distribuidas e importantes. Estos herbicidas fueron los primeros herbicidas orgánicos desarrollados que presentaron selectividad; es decir, capaces de matar un cierto grupo de plantas sin afectar a otros grupos (por ejemplo: matar plantas de hoja ancha pero no las de hoja angosta; en este documento se utilizará el término "gramíneas" para referirse a las plantas de hoja angosta o cereales). En esta lección se presentarán las principales características de los herbicidas auxínicos, se discutirán sus principales usos y se describirán los síntomas de daño que causan. De igual forma, se indicará la forma en que estos herbicidas matan a las plantas sensibles.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Correlation Using the R Statistical Package - Part 1: An Introduction to the Canopy Spectral Reflectance (CSR) Experiment
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Ashu GuruUniversity of Nebraska Raikes SchoolDeana Namuth-CovertUniversity of Nebraska Dept of Agronomy ...

Ashu GuruUniversity of Nebraska Raikes SchoolDeana Namuth-CovertUniversity of Nebraska Dept of Agronomy and Horticulture2014When conducting research, sometimes it is important to know if two different characteristics are related to each other.  An example in plant breeding might be if deep roots are somehow related to drought resistance.  Correlation is a measure of dependence or statistical relationship between two random variables or two sets of data. Correlation measures the strength of the linear relationship between two variables, such as the deeper roots are, the more the plant can withstand drought.  Not all climates will indicate a good correlation between these."R" is a free to use software programming language and software environment for statistical computing and graphics. R is widely used in both academia and industry for data analysis and modeling.In this lesson module we will introduce you to a real world experiment in which one objective is to determine which Canopy Spectral Reflectance (CSR) indices and growth stages best correlate with yield and/or yield components under water stressed and non-stressed treatments in 300 winter wheat lines. This lesson does not require you to have any prior knowledge of the R language and environment, nor do you need to be fluent in plant breeding research.  However users who have basic understanding of a statistical technique called "correlation" will be able to take better advantage of the lesson.  If you need a refresher on correlation, go to this site: https://www.youtube.com/watch?v=4EXNedimDMs&list=TLaKfQPP3YM9TSdqIXpG_ZbtHWgaOu-Awh 

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Transformation 1 - Plant Tissue Culture
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This lesson explains the technique of tissue culture as used in plant ...

This lesson explains the technique of tissue culture as used in plant transformation. It discusses important issues, such as the use of selectable markers, genotype specificity, and tissue culture alternatives.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Soils - Part 10: The Scientific Basis for Making Fertilizer Recommendations
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The Scientific Basis for Making Fertilizer Recommendations: In this lesson, you will ...

The Scientific Basis for Making Fertilizer Recommendations: In this lesson, you will gain an understanding of the history of fertilizer use and the ideas behind fertilizer recommendations. Three major crop nutrition concepts will be discussed in terms of their benefits and disadvantages.[This lesson, as well as the other nine lessons in the Soils series, is taken from the "Soils Home Study Course," published in 1999 by the University of Nebraska Cooperative Extension.]

Subject:
Life Science
Material Type:
Lesson Plan
Provider:
Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Mecanismo(s) de Acción de los Herbicidas Auxínicos - Parte 2 - Nivel Avanzado
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Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales ...

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales por los herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso mas ampliamente distribuidas e importantes. Se cree que estos herbicidas actúan como simuladores hormonales. En esta lección se detallará la relación estructural y fisiológica entre los herbicidas auxínicos y la fitohormona natural auxina (ácido indol-3-acético; IAA por sus siglas en inglés) y se explicarán los mecanismos bioquímicos que pueden estar involucrados en su modo de acción. Se revisará el mecanismo de transporte de célula a célula y la absorción de las auxinas por las células, así como también la forma en que estas moléculas causan elongación celular e inducen la síntesis de etileno. De igual forma, se describirán los receptores, las rutas de transferencia de señales y los cambios en expresión genética inducidos por la fitohormona natural IAA y su relación con la actividad de los herbicidas auxínicos.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary
Transformation 2 - Transformation Methods
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This lesson explains the procedure of introducing a new gene into a ...

This lesson explains the procedure of introducing a new gene into a plant cell (transformation). It discusses the main goals of the transformation process and describes the four main methods of transformation.

Subject:
Life Science
Material Type:
Lesson Plan
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Plant and Soil Sciences eLibrary
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Plant and Soil Sciences eLibrary