Laboratory Manual

Experiment #7. Plant Nutrient Deficiency Symptoms, Insects, and Diseases

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NUTRIENT DEFICIENCY SYMPTOMS

LINKS

http://www.agr.state.nc.us/cyber/kidswrld/plant/index.htm

Slide number	---------------------------Symptom------------------------
1	Nitrogen deficiency, tomato
2	Phosphorus deficiency, tomato upper side of leaf
3	Phosphorus deficiency, tomato bottom side of leaf
4	Potassium deficiency: tomato | cucumber |
5	Calcium deficiency:tomato | corn| lettuce | cucumber | tomato
6	Calcium deficiency, tomato blossom-end rot
7	Magnesium deficiency, tomato leaf
8	Magnesium deficiency, tomato very severe
9	Iron deficiency: blueberry | corn | borage
10	Molybdenum deficiency, cauliflower
11	Sulfur deficiency, tobacco
12	Phosphorus deficiency, corn
13	Potassium deficiency, corn
14	Calcium deficiency, zinnia
15	Calcium deficiency, marigold
16	Ammonium toxicity, tomato
17	Ammonium toxicity, tomato severe
18	Ammonium toxicity, tomato also typical of salt injury

PLANT DISEASES

LINKS

http://www.ces.ncsu.edu/resources/pests/

http://edis.ifas.ufl.edu/

Slide number	-------------Disease-----------	-------------------------------Control----------------------------------
1	Late blight of potato (foliar)	Fungicides; certified seed pieces; destroy volunteers.
2	Late blight of potato (tuber)
3	Potato scab	Soil pH 5.3; use scab-free seed pieces.
4	Potato black leg	Well-drained soil; use well-corked or whole seed pieces and certified seed pieces.
5	Tobacco mosiac virus on tomato (foliage)	Eradicate diseased plants; control insects and weeds; avoid tobacco, and wash hands in soapy water or milk before handling plants.
6	Tobacco mosiac virus on tomato (fruit)
7	Cucumber mosaic virus on tomato	Eradicate plants; control tomato insects and weeds; wash hands frequently when handing plants.
8	Fusarium wilt on tomato	Select resistant varieties.
9	Walnut wilt of tomato	Do not plant under walnut trees.
10	Verticillium wilt of eggplant	Select resistant varieties; use long rotations without eggplant; fumigate; mulch with plastic.
11	Powery mildew on cucumber	Select resistant varieties; control insects and diseases.
12	Cucumber scab	Select resistant varieties; use fungicides.
13	Mosaic on cucumber (foliage)	Select resistant varieties; control insects and weeds.
14	Mosaic on cucumber (fruit)
15	Bacterial wilt of muskmelon	Rotate crops; control beetles.
16	Fusarium wilt of muskmelon	Use treated seeds, sanitation, rotation, and resistant varieties.
17	Tobacco mosaic virus on pepper	Eradicate plants, insects, and weeds.
18	Neck rot of onion	Sanitation in storage; fungicides in field.
19	Fusarium pink rot on onion	Use resistant varieties on clean, well-drained soil.
20	Downy mildew of lettuce	Control weeds. Use disease-free seed; rotate crops.
21	Bottom rot of lettuce.	Dry, well-drained soil
22	Soft rot of lettuce	Avoid wet areas; harvest on time; avoid bruising.
23	Mosaic virus on lettuce	Use virus-free seeds; eradicate plants and weeds; control insects.
24	Anthracnose on bean	Use fungicide; new seed
25	Sunscald on bean
26	Mildew on bean	Use fungicide; try rotations.
27	Virus on bean	Control insects, weeds, and infected plants.
28	Yellows (mycoplasma) of carrot	Control insects and weeds; eradicate diseased plants.
29	Virus on cabbage	Select varieties; clean up garden; control weeds and insects.
30	Alternaria leaf spot of cabbage	Good garden sanitation; not too much N; use fungicides; destroy cabbage worms.
31	Club root of cabbage	Good garden sanitation; inspect transplants; use sterilized soil in starting transplants; kill weeds; lime soil to pH 7.2; use long rotations without crucifers.
32	Smut on corn	Good garden sanitation; rotation; no smut in compost pile; control earworm and corn borer.

 

 INSECTS

LINKS

http://www.ces.ncsu.edu/resources/pests/

http://edis.ifas.ufl.edu/

Slide	Insect
1	Root-knot nematode (microscopic worms) okra
2	Leaf hoppers
3	Whiteflies
4	Armyworm larvae; another
5	Armyworm adult
6	Tomato hornworm
7	Cabbage looper caterpillar
8	Cabbage eaten by caterpillar
9	Corn earworm; another
10	White grubs of May or June beetle
11	Millipede
12	Bean aphids
13	Aphids on rose
14	Thrips
15	Earwig
16	Black scale
17	Hemispherical scale
18	Mealy bug
19	Cyclamen mite damage
20	Spotted cucumber beetle
21	Cabbage maggot
22	Plant wilted from cabbage maggot
23	Lacewing injury on Pieris
24	Asparagus beetle
25	Colorado potato beetle

 WEEDS

http://cropandsoil.oregonstate.edu/weeds/id.html

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Produced and maintained by Allen Barker
University of Massachusetts, Amherst.