MANAGING FERTILITY IN HAY & PASTURE GROUND Jennifer Jensen - - PowerPoint PPT Presentation

MANAGING FERTILITY IN HAY & PASTURE GROUND

Jennifer Jensen University Of Idaho Extension Bonner County

CONTENT

• Soil Sampling
• Soil Test Results
• Nutrient Recommendations
• Organic Fertilization - Manures

SOIL SAMPLING

SOIL SAMPLING

Grass Pasture 1 Grass Pasture 2

NUTRIENT REMOVAL

Grass Pasture 1 Grass Pasture 2

Grass Pasture 1

Ammonia N – 2.4 Nitrate N – 1.3

Grass Pasture 2

Ammonia N – 2.4 Nitrate N – 1.3

Bonners Ferry – 20-29inches

(24.5 inch average)

Sandpoint – 28-37

(33 inch average)

PRECIPITATION

Grass Pasture 1

Available P – 2.9

Grass Pasture 2

Available P – 0.58

Grass Pasture 1

Available K – 270

Grass Pasture 2

Available K – 39

Grass Pasture 1

Sulfate S – 3.5

Grass Pasture 2

Sulfate S – 2.4

Photo: Nutri-Facts - IPNI - International Plant Nutrition Institute http://anz.ipni.net/ipniweb/region/anz.nsf/0/ABFA1A5619972D 2ACA257D4600093601/$FILE/NutriFacts-NA-4.pdf

ALFALFA SOIL REPORT

• At seeding, applying 30 to 35

pounds of fertilizer N per acre

• Excessive levels of inorganic in soils will

promote invasion by grassy plant species and also reduce nodulation and the quantity of N fixed by the alfalfa crop.

• Excessive soil acidity and soil pH values

less than 5.8 for alfalfa can disrupt N

• fixation. (soil test pH=5.8)

NITROGEN

Available P – 2.3

PHOSPHOROUS

Available K – 65

POTASSIUM

Sulfate S – 10

SULFUR

Boron – 0.83 Treat a soil testing less than 0.5 ppm of B with 1 to 1.5 pounds of B per acre. Do not exceed B application rates of 2 pounds per acre.

BORON

Photo: CIS 1085 Boron - University of Idaho

4-3-3

ORGANIC FERTILIZER

Soil test interpretations and fertilizer management for lawns, turf, gardens and landscape plants Carl J. Rosen, Peter M. Bierman and Roger D. Eliason Univ. of Minnesota Extension

QUESTIONS