CONTENT

Introduction

Types of nutrients

Macronutrients

Micro nutrients

fertilizers

INTRODUCTION

FERTILITY

The ability of the soil to supply essential plant

nutrients and soil water in adequate amounts

and proportions for plant growth and

reproduction in the absence of toxic

substances which may inhibit plant growth.

INTRODUCTION

NUTRIENT

Nutrients are chemical elements that are essential for the

growth and fertility.

DEFICENCY

Plant condition where an essential nutrient is not sufficiently

available.

MICRO NUTRIENTS

Nutrient needed in smaller quantities

CONT.

MACRO NUTRIENTS

Nutrient needed in larger quantities

TOXICITY

A point that is reached where too much of a nutrient

becomes poisonous

TYPES OF NUTRIENTS

There are two basic type of nutrients that are presnt in

the soil to make it a fertile one:

1. Macro nutrients

2. Micro nutrients

MACRO VS MICRO

Macro nutrients are required by the plant in

relatively large amounts

Micro nutrients are required only in small amounts

MACRO NUTRIENTS

NON MINERAL

ELEMENTS

carbon (C)

hydrogen (H)

oxygen (O)

PRIMARY

NUTRIENTS

Nitrogen (N)

Phosphorus (P)

Potassium (K)

SECONDARY

NUTRIENTS

calcium (Ca)

magnesium (Mg)

sulfur (S)

NITROGEN

ABUNDANCE

98% of the planet’s nitrogen is in the primary rock of the Earth, the remaining 2% is in the atmosphere

IMPORTANT FOR PLANT

Promotes growth of leaves and stems

Makes up 1% to 4% of plant’s harvested material

Crops absorbed more nitrogen from the soil than any other nutrient.

Most frequently the limiting factor in crop production.

Necessary to develop cell proteins and chlorophyll

NITROGEN

DEFICIENCY SYMPTOMS

Chlorosis : sick, yellow-green color

short stems, small leaves, pale colored leaves and flowers

slow and dwarfed plant growth

PHOSPHOROUS

3rd most readily absorbed nutrient

Stimulates early formation and growth of roots

Provides for fast and vigorous growth and

speeds maturity

Stimulates flowering and seed development

Necessary for the enzyme action of many plant

processes

PHOSPHOROUS

DEFICIENCY SYMPTOMS

decrease in growth

slow maturity

older leaves are purplish color

POTASSIUM

2nd most readily absorbed

Used to form carbohydrates and proteins

Water intake and respiration

Formation and transfer of starches, sugars and

oils

Increases disease resistance and hardiness

POTASSIUM

DEFICIENCY SYMPTOMS

Shorter and weaker plants

spotted, streaked or curled leaves

burned, browning . dead leaf tips

and margins

CALCIUM

Improves plant vigor

Influences intake and synthesis of other plant nutrients

Promotes root and leaf growth

DEFICIENCY SYMPTOMS

Chlorosis beginning in the leaf edges and

moving inward

wrinkled older leaves

dead stem tips

MAGNESIUM

Helps make fats

Vital for photosynthesis

Chlorophyll or the green coloring of the plant

Needed for protein synthesis

DEFICIENCY SYMPTOMS

Leaves curl along the margins

Leaf parts show a whitish color

SULFUR

Promotes root growth and vigorous vegetative growth

Essential to protein formation

Stimulates seed production

DEFICIENCY SYMPTOMS

Similar symptoms to that of a

nitrogen deficiency.

Stunted appearance.

young leaves are light green

with lighter color veins

MICRO NUTRIENTS

Iron (Fe)

Copper (Cu)

Zinc (Zn)

Boron (B)

Molybdenum (Mo)

Manganese (Mn)

Chlorine (Cl)

MICRONUTRIENTS

IRON

Essential for chlorophyll production

COPPER

Helps respiration

ZINC

helps form growth hormones

Reproduction

BORON

affects water absorption by roots

MANGANESE

nitrogen transformation

MANGANESE

nitrogen transformation

• MOLYBDENUM

plant development

• CHLORINE

acts in enzyme systems

PROVISION OF NUTRIENTS

IN SOIL

The nutrients can be maintainede in the soil to

increase the fertility by adding the different

fertilizers

Fertilizers can be

Organic

Inorganic

ORGANIC VS IN ORGANIC

ORGANIC INORGANIC

Comes from plant or animal matter and contains carbon compounds.

Natural product

Not easily leached from the soil

Hard to get

Not sterile

Expensive

Comes from sources other

than animals or plants

Chemical products

easily leached from the

soil

Easy to get

easy to get

lower cost

THANK YOU