Download Soil Fertility - Crop and Soil Science - Lecture Slides and more Slides Botany and Agronomy in PDF only on Docsity! Soil Fertility Docsity.com Terms and definitions โข Essential Nutrient- Element necessary for plant growth and reproduction, for example: nitrogen, phosphorus, and potassium. โข Deficiency- Plant condition where an essential nutrient is not sufficiently available. โข Symptom- A visual sign or condition that results from a deficiency: symptoms aids in diagnosing a deficiency. Docsity.com Chemical Elements Essential To Plant Growth โข Non-mineral- air and water โ Carbon (C) โ Hydrogen (H) โ Oxygen (O) โ Nitrogen (N) โข Mineral- from the soil โ Primary โข Nitrogen (N) โข Phosphorus (P) โข Potassium (K) โ Secondary โข Calcium (Ca) โข Magnesium (Mg) โข Sulfur (S) โ Micronutrients โข Iron (Fe), Boron (B), Manganese (Mn), Copper (Cu), Zinc (Zn), Molybdenum (Mo), Clorine (Cl) Docsity.com 10 Essential Elements โข Essential Elements โ Carbon (C) โ Hydrogen (H) โ Oxygen (O) โ Phosphorus (P) โ Potash (K) โ Nitrogen (N) โ Sulfur (S) โ Calcium (Ca) โ Iron (Fe) โ Magnesium (Mg) C. HOPKINS CAFร Mighty Good Docsity.com PROFITS CAN FALL
IF AHYยฅ NUTRIENT IS SHORT
PRIMART PLANT
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SECOMDARY PLANT HUTRIEMTS
MICRO PLANT MUTRIENTS
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More Primary Nutrient Functions โข Phosphorus (P) โ Important to germinating seedlings โ Contributes to early maturing crops โ Necessary for seed and fruit formation โ Stimulates root growth Docsity.com Primary Nutrient Functions Cont. โข Potassium (K) โ Necessary for production and translocation of carbohydrates โ Produces plumper seeds โ Controls Water intake and respiration โ Stiffens straw and stalks Docsity.com Secondary Nutrient Functions โข Sulfur (S) โ Necessary for nodule formation on legumes โ Associated with plant enzyme systems โ Stimulates seed production โ Affects protein and crop quality Docsity.com Symptoms of nutrient deficiencies โข Review โ Deficiency- Plant condition where an essential nutrient is not sufficiently available. โ Symptom- A visual sign or condition that results from a deficiency: symptoms aids in diagnosing a deficiency. Docsity.com Primary nutrient deficiency symptoms โข Nitrogen (N) โ Stunted and Spindly โ Yellow, yellowish green or light green in color in foliage (chlorosis) โ Older leaves affected first, starting at the tip and moves along the middle of the leaf. Docsity.com ieee deficiency In corn
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SMALL EARS AND LOW PROTEIN CONTENT
RESULT FROM NW DEFICIENCY
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Primary nutrient deficiency symptoms โข Potassium (K) โ Shorter plants โ Bronzing or browning of leaf color โ Lodging (bending of the stem) occurs โ Leaves show yellow to brown coloring along leaf margins followed by complete browning. Docsity.com Potassium Deficiency
NORMAL K DEFICIENCY
K 15 NEEDED WHEN SLICE-AWAY REVEALS NOES
ARE DISCOLORED DARK BROWN
K DEFICEENCY CAUSES FIRING OR DRYING ALONG
โ THE TIPS AND EDXa ES OF LOWEST LEAVES ;
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Secondary nutrient deficiency symptoms โข Sulfur (S) โ Young plants have stunted appearance โ Leaves have a light-green to yellow coloring โ Stems are thin and spindly โ Sulfur deficiency symptoms are similar in appearance to nitrogen deficiency symptoms. Docsity.com
