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Fertilizers can be divided into macronutrients or micronutrients based on their concentrations in plant dry matter. There are six macronutrients: nitrogen, phosphorus, and potassium, often termed "primary macronutrients" because their availability is usually managed with NPK fertilizers, and the "secondary macronutrients" — calcium, magnesium, and sulfur — which are required in roughly similar quantities but whose availability is often managed as part of liming and manuring practices rather than fertilizers. The macronutrients are consumed in larger quantities and normally present as a whole number or tenths of percentages in plant tissues (on a dry matter weight basis). There are many micronutrients (such as boron, chlorine, manganese, iron, zinc, copper, and molybdenum), required in concentrations ranging from 5 to 100 parts per million (ppm) by mass.
 
  
 
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Revision as of 21:33, 9 March 2021

Other languages:
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Agricultura

Autoridad de aprobación:
Categoría:
Nivel de destreza:
Año de introducción:
Agriculture AY Honor.png

Contenido




1

Mencionar de los componentes del suelo. ¿Por qué es importante el suelo para las plantas?



2

Explicar la diferencia entre la arcilla, arena y suelos loam. Hacer una lista de tres cultivos que crecen bien en cada una de ellas.



3

Examinar la germinación de tres variedades de semillas, 100 semillas por cada variedad. Registrar el porcentaje de germinación después de tres, cuatro y cinco días.


La especialidad de Semillas - Avanzado tiene un requisito similar, entonces considere desarrollarlas juntas.


4

Explicar cómo las plantas obtienen nutrientes y cómo los convierten en comida. Explicar las diferencias entre nutrientes primarios, secundarios y micronutrientes.



5

Nombrar e identificar 10 malezas comunes de la comunidad y decir la mejor manera de eliminarlos, usando métodos manuales o químicos.


Chenopodium album

Chenopodium album (Fat hen)

Where found: Worldwide

Description: Chenopodium album is a fast-growing weedy annual plant in the genus Chenopodium. The standard English name is Fat-hen; other names include white goosefoot, lamb's quarters, pigweed or dungweed, or more ambiguously as just goosefoot.

Control: It may be controlled by dark tillage, rotary hoeing, or flaming when the plants are small. Crop rotation of small grains will suppress an infestation. It is, however, difficult to control with chemical means.
ChenopodiumAlbum001.JPG

Stellaria

Stellaria (Chickweed)

Where found: Europe, North America

Description: Stellaria is a genus of about 90-120 species flowering plants in the family Caryophyllaceae, with a cosmopolitan distribution. Common names include stitchwort and chickweed.

Control: Control is difficult due to the heavy seed sets, although herbicides are effective when the plants are small. Common Chickweed is very competitive with small grains, and can produce up to 80% yield losses among barley.
StellariaMedia001.JPG



6

Identificar seis plagas comunes de insectos o enfermedades. Mencionar qué plantas generalmente son afectadas y la forma de eliminar o prevenir su aparición.



7

Localizar dos fuentes de información meteorológica agrícola. ¿Cómo es ésta información útil para el agricultor?


  1. USDA's Weekly Weather and Climate Bulletin
  2. U.S. National Climate Data Center

Climate is what to expect. Weather is what you get. Climate is basically a long-term average of what the weather has done in the past.


8

Ayudar en la siembra, cultivo, cosecha en por lo menos four diferentes cultivos. Mantener un registro del trabajo realizado y los problemas que enfrentó en la siembra a la cosecha.


Your log need not be any more complicated than a notebook and pen. You could include information such as:

  • Plowing/Discing
    • When was it done?
    • What was the condition of the soil?
    • Cost
  • Planting
    • Date
    • Amount of seed used
    • Method (how was the planting done?)
    • Cost
  • Fertilizer
    • When applied
    • What kind was applied
    • Cost
  • Pest Control
    • Dates and types of pesticides and herbicides
    • Cultivation dates
    • Mechanical/cultural controls applied
    • Cost
  • Irrigation
    • Dates
    • Rainfall dates
    • Cost
  • Harvest
    • Date
    • Yield


9

Conocer el propósito de los siguiente:


9a

Arado


9b

Remover tierra con discos de tractor



9c

Cultivar


9d

Riego


9e

Cosecha




10

Nombrar y determinar las 10 aves comunes de su localidad y decir su valor para el agricultor.


The greatest benefit birds provide to farmers is their voracious appetites for insects.


11

¿Qué es la erosión? ¿Cómo puede prevenirse?


Erosion is the displacement of soil by wind, water, or ice by downward or down-slope movement. It can occur quickly on steep ground - especially if there is nothing growing there. It can be slowed by minimizing the amount of time the land has nothing growing on it. When plowing, discing, or planting, it is best to make furrows perpendicular to the slope of the ground. Plowing straight uphill will cause furrows to act as ever-widening ditches that channel the water quickly away, carrying soil with it. Plowing across a hill instead slows the descent of rainwater and allows it to drop the sediments it picks up rather than carrying it off.


12

Visitar una cooperativa local de servicios de extensión y averiguar la forma en que la organización ayuda a los agricultores. Escribir un informe de una página de la visita.




Referencias