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Pecan Nuts Moldy or Shriveled: Water Stress, Not Disease

The Complaint

Dallas pecans: mold inside or shriveled kernels. Tree sick? Cut down?

Analysis

Shrivel = water imbalance (too much/too little) during kernel fill.
Mold likely secondary.
Pecans cycle good/bad years.
Soil test via county Extension.

Plant Diseases: Pecan Tree Limb Drop: Drought, Weevils, and Borers; Rotten Pecans: Weather, Scab, and Alternate Bearing; Chitalpa Dieback: Prune Dead, Encourage Basal Sprouts; Pecan Nuts Poor Quality Two Years Running: Soil Test and Water; Pecan Tree No Nuts: Water, Zinc, Fertilizer, Pruning Guide; Pecan Tree Nut Problems: Weevils, Scab, and Spray Schedule; Why Tree Roses Die in Winter & How to Protect Them; Pecan Trees Not Bearing: Fertilize, Water, Soil Test; Managing Zinc Deficiency in a Mature Pecan Tree; Eliminating Invasive White Mulberry Tree Near Fence

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