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

• Field crops

Bolls are set on 99 percent of the cotton acreage ahead of the five-year average of 98 percent. Opening of bolls has occurred on 43 percent, same as last year’s 43 percent, but ahead of the five-year average of 40 percent. Cotton conditions are mostly good to excellent depending on the 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 watermelons this week.

• Weather summary

Temperatures were mostly above normal across Arizona, ranging from 6 degrees below normal at Parker to 7 degrees above normal at Payson and Prescott. The highest temperature of the week was 111 degrees at Roll and the lowest reading of 34 degrees occurred at Grand Canyon.

Precipitation was reported at 20 of the 22 stations. Safford received the most at .72 inches of rain. Yuma received the least with 0.01 inches. Willcox is the only reporting station with above normal precipitation to date.