About crop rotation A Lecture By Mr Allah dad Khan

Crop Rotations for Prevention of Phytophthora capsici Infection in

Solanaceous and Cucurbit Crops A Lecture

By Mr.Allah Dad Khan Former DG Agriculture Extension

KPK Province Allahdad52@gmail.com

03329221298

Crop Rotation: Planting different type

crops in succession in the same field.Rotating crops helps to:

1. utilize nutrients in the soil2. control disease organisms3. control weed species4. control nematode populations5. control insect populations

Solanceous CropsFamily: Solanaceae

–Susceptible to Phytophthora capsicia) Tomatob) Pepperc) Eggplantd) Tobacco

Cucurbit CropsFamily: Cucurbitaceae

• Susceptible to Phytophthora capsici1. Squash2. Cucumbers3. Pumpkins4. Melons

Grower Reasons for Lack of Using Crop Rotations

1. Limited Land Resources 2. Farm Specializes in a Few Crops3. Limited Markets for Alternative Crops4. Unfamiliarity with Plant Families and

Disease Susceptibility

Crop Rotation Plan to reduce Phytophthora capsici

1. Plant non-susceptible crops for 3-5 years2. Plant winter cover crops to increase soil

organic matter3. Plant summer cover crops rather than

leaving field fallow

Plant Families Not Susceptible to Phytophthora capsici

Family: Fabaceae (Leguminosae)• “The Bean and Pea Family”

1. Beans2. Peas3. Clovers4. Vetches

Plant Families Not Susceptible to Phytophthora capsici

Family: Brassicaceae (Cruciferae)

• “The Cole Crops”1. Greens: Collards, Kale, Mustards2. Cauliflower 3. Turnip4. Broccoli5. Cabbage6. Radish

Plant Families Not Susceptible to Phytophthora capsici

Family:Apiaceae (Umbelliferae)

1. Carrots2. Celery3. Florence Fennel4. Parsley5. Cilantro6. Parsnip

Plant Families Not Susceptible to Phytophthora capsici

Family: Alliaceae (Amaryllidaceae)

A. OnionsB. GarlicC. LeeksD. ShallotsE. ScallionsF. Chives

Plant Families Not Susceptible to Phytophthora capsici

Family: Asteraceae (Compositae)

1. Lettuces2. Dandelion3. Jerusalem Artichoke4. Endive/Escarole5. Globe Artichoke

Plant Families Not Susceptible to Phytophthora capsici

Family: Chenopodiaceae

1) Spinach2) Swiss Chard3) Beets

Plant Families Not Susceptible to Phytophthora capsici

Family: Poaceae (Gramineae)

• FOR HARVEST OR GREEN MANURE• “The Cereals”

– Rye– Wheat– Corn– Sudangrass– Sorghum

Other Plants Not Susceptible to Phytophthora capsici

Medicinal Herbs

1. Purple Cone Flower2. St. John’s Wort3. Chamomile4. Yarrow5. Golden Seal

Other Plants Not Susceptible to Phytophthora capsici

Culinary Herbs

1. Basil2. Oregano3. Mint4. Thyme5. Sage

Additional Tools to Control Phytophthora capsici

• FIELD WATER MANAGEMENT 1. Irrigation2. Raised Beds3. Field Water Flow 4. Swails at Field Ends 5. Cultivate to the Swail

Additional Tools to Control Phytophthora capsici

• CHEMICAL CONTROLS - FUNGICIDES1. Soil fumigation2. Soil Applied Fungicides 3. Foliar Applied Fungicides

Additional Tools to Control Phytophthora capsici

PRACTICE GOOD SANITATION1. Clean Equipment

2. Work Contaminated Field Last3. Do Not Work Contaminated Areas4. Remove Infected Plants

Additional Tools to Control Phytophthora capsici

• ENHANCE SOIL HEALTH– Increase Organic Matter

• green manure• off-farm supplements

– Stay Off Wet Fields– Break up hard pans

– Eliminate fumigation if possible

Summary: Controlling Phytophthora capsici

• Use proper crop rotations

• Practice good water management

• Utilize fungicides correctly

• Practice good sanitation

• Enhance Soil Health

CONCLUSIONS

1. Crop rotation can help to control Phytophthora capsici

2. Rotations must be used with other tools to be successful

3. Know susceptible and non-susceptible crops to plan rotations

4. Rotating crops will show more benefits than just controlling Phytophthora capsici

Thank you very muchThank you very much