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Archive | Fruit trees

Citrus Greening Solutions

One segment of APHIS’ comprehensive agricultural quarantine and inspection program is based out of APHIS’ National Detector Dog Training Center, an 18-acre facility in Georgia. Sniffer dog Zsemir alerts to a young tree in Florida. 

$3.3 billion. That’s what the National Agricultural Statistics Service rates the value of the citrus industry in the United States. Yet danger and some of the industry’s greatest challenges lurk in citrus groves across the country — devastating pests and diseases.

The Department of Homeland Security estimates invasive species annually cause $136 billion in overall lost agricultural revenue in the United States.

The Asian citrus psyllid, which creates a disease-causing bacteria known as Huanglongbing (HLB) or citrus greening, is one of the citrus industry’s most destructive insects. It has infected commercial and residential citrus trees across the country from Florida to Texas to California. The disease clogs an infected tree’s vascular system, preventing fruit from maturing and eventually killing the tree.

First identified in China in 1919, by 1937 it had spread to the Philippines and South Africa. Continue Reading →

Branching Out: Fruit Tree Grafting

Long ago I witnessed magic. There were no cauldrons or potions, yet it was magic to my young, farmboy mind. It was magic in the form of fruit tree grafting, and though decades have passed it is still just as magical to me.

when grafting a fruit tree, use tape to seal graft

Use tape, grafting compound, or a homemade product to seal the graft.

An old veteran owned a large apple orchard two farms over and I often walked through it as a shortcut to the county road. One sharp April day when I was passing by, Harold Bualmer was on a ladder cutting limbs. Noticing me, he waved me over. He always had apples in his pockets and offered me what he called a “winter apple,” which to me looked like, well, an apple. He said he was pruning back the limbs and ground suckers to keep everyone behaving themselves and would use the fresh cuttings for grafts.

Being a bold child, I asked what a graft was. The old gent laughed and asked if anyone had ever shown me the orchardist’s secret. He climbed down from the ladder and told me to gather a bundle of cuttings and follow him.

Harold selected a sturdy tree with several low wrist-thick limbs. He produced the knife he had sliced up our snack of apples with, wiped it on his sleeve, and then began to work. First he trimmed off a few tiny suckers—“nuisance twigs” he gruffly called them—then, on a fairly flat area, he made a tiny, shallow triangle-shaped notch in the limb.

Continue Reading →