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

• Field crops

Opening of bolls has occurred on 90 percent of the cotton acreage, below last year’s 98 percent, and behind the five-year average of 96 percent.

Harvesting is 25 percent complete, ahead of last year at 24 percent, and ahead of the five-year average of 19 percent. Cotton conditions are fair to excellent.

Alfalfa harvest remains active on over three-quarters of Arizona’s acreage. Alfalfa conditions range mostly from poor to 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 this week.

• Weather summary

Temperatures were mostly above normal across Arizona for the week ending Oct. 4 ranging from 8 degrees below normal at Parker to 7 degrees above normal at Prescott.

The highest temperature of the week was 110 degrees at Yuma and the lowest reading of 16 degrees occurred at Grand Canyon.

Precipitation was reported at 6 of the 22 stations. The Douglas area received the most at .33 inches and Flagstaff received the least at .01 inches. Yuma is the only reporting station with above normal precipitation to date.