The latest Arizona agriculture update from the National Agricultural Statistics Service’s Phoenix, Ariz., field office:

• Field crops

The opening of cotton bolls has occurred on 54 percent of the acreage, below last year’s 69 percent, and behind the five-year average of 65 percent. Harvesting is underway at 7 percent complete, slightly behind last year at 9 percent, but ahead of the five-year average of 4 percent. Cotton conditions are mostly good to excellent depending on location.

Alfalfa harvest remains active on over three-quarters of Arizona’s acreage. Alfalfa conditions are mostly good. Range and pasture conditions vary from mostly very poor to fair depending on the location and elevation.

• Vegetables, fruit, and specialty crops

Arizona growers shipped miscellaneous melons.

• Weather summary

Temperatures were mostly above normal across Arizona ranging from 1 degree below normal at Roll to 9 degrees above normal at Grand Canyon. The highest temperature of the week was 110 degrees at Phoenix and Yuma while the lowest reading of 43 degrees occurred at Grand Canyon.

Precipitation was reported at 18 of the 22 stations. Yuma received the most at 1.64 inches. Tucson received the least with .04 inches. Yuma is the only reporting station with above normal precipitation to date.