Table 1.

Percentage of fruit damaged by sap beetle and mean number of sap beetles per walnut in 2019–2020 in different walnut categories. Sorted: walnut fruits sorted by mechanical and/or manual process; unsorted: walnut fruits harvested, stored in warehouse but not subjected to a sorting process; Discarded: walnut fruits discarded during sorting process; Collected from ground: walnut fruits picked directly from the ground in walnut orchards; * denotes a statistical difference.

Walnut category	2019				2020
	Damaged fruits		Sap beetles/walnut		Damaged fruits		Sap beetles/walnut
	Mean ± SE	Range of variation	Mean ± SE	Range of variation	Mean ± SE	Range of variation	Mean ± SE	Range of variation
Sorted	10.0 ± 0.00	10.0 – 10.0	3.33 ± 0.667	2.0 – 4.0	5.7 ± 1.94	2.3 – 12.9	1.45 ± 0.207*	1.0 – 3.0
Not sorted	16.2 ± 6.03	5.0 – 50.0	3.96 ± 0.687	1.0 – 16.0	11.9 ± 2.74	2.0 – 27.3	3.63 ± 0.700	1.0 – 28.0
Discarded	32.5 ± 14.50	5.0 – 60.0	3.65 ± 0.688	1.0 – 15.0	24.0 ± 4.04	2.8 – 57.8	5.34 ± 0.659*	1.0 – 40.0
From ground	22.5 ± 4.23	5.0 – 35.0	2.26 ± 0.344	1.0 – 7.0	10.2 ± 2.60	1.7 – 36.7	4.08 ± 0.721	1.0 – 30.0