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. 2016 Aug 23;7:1226. doi: 10.3389/fpls.2016.01226

Table 6.

Annual (t ha−1), average (t ha−1 year−1), and accumulated (t ha−1) fruit and olive yield for “Arbequina” at nine densities 14 years after planting in southern Spain.

Year after plantation/harvest season
Density (Trees ha−1) 3 4 5 6 7 8 9 10 11 12 13 14 Averagec (t ha−1 year−1) Accumulatedd (t ha−1)
2002/2003 03/04 04/05 05/06 06/07 07/08 08/09 09/10 10/11 11/12 12/13 13/14
Fruit (t ha−1) 780 5.8 3.9 6.9 6.3 5.6 7.3 6.5 5.9 8.6 8.9 5.5 13.6 7.1d 84.8e
909 6.8 3.6 7.9 6.9 6.1 7.3 7.9 6.8 7.7 8.9 5.5 14.9 7.5d 90.3e
952 7.0 4.9 8.8 7.2 6.8 8.9 7.5 6.2 8.7 9.6 5.5 13.8 7.9cd 95.0de
1143 8.1 4.9 9.6 8.0 7.3 7.9 7.7 7.3 9.7 10.6 5.9 15.3 8.5bcd 102.4cd
1203 7.5 5.7 9.6 7.3 6.8 11.4 8.5 8.5 11.2 10.3 5.0 16.3 9.0bcd 108.0c
1481 9.0 6.6 10.7 9.0 7.9 10.3 7.6 7.3 11.8 11.6 4.2 16.9 9.4abc 113.0c
1569 8.8 8.0 11.9 8.9 7.7 12.1 11.0 8.5 13.6 12.8 7.0 16.9 10.6ab 127.2b
2000 10.9 9.3 12.0 9.0 9.3 11.7 11.0 9.8 16.1 10.4 7.7 18.8 11.3ab 135.9b
2254 10.4 8.3 14.4 11.1 10.9 12.1 12.2 10.5 17.9 15.3 10.6 21.4 12.9a 155.0a
Average 8.3e 6.1bcde 10.2abc 8.2bcde 7.6de 9.9abcd 8.9abcde 7.9cde 11.7ab 10.9ab 6.3e 16.4a
Oil (t ha−1) 780 0.9 0.8 1.2 1.3 1.3 1.6 1.4 1.2 1.4 1.7 0.9 2.3 1.3d 16.1f
909 1.1 0.7 1.5 1.5 1.4 1.6 1.7 1.4 1.2 1.7 0.9 2.5 1.4cd 17.4ef
952 1.2 1.0 1.8 1.5 1.5 2.0 1.6 1.2 1.4 1.8 0.9 2.3 1.5cd 18.4de
1143 1.4 1.1 1.8 1.8 1.7 1.7 1.6 1.4 1.6 2.0 0.9 2.7 1.6bcd 19.8cd
1203 1.2 1.2 2.1 1.5 1.4 2.4 1.8 1.7 1.8 1.9 0.8 2.7 1.7bcd 20.5cd
1481 1.5 1.4 2.1 1.9 1.8 2.2 1.5 1.5 1.9 2.1 0.7 2.7 1.8bc 21.7c
1569 1.4 1.8 2.1 1.9 1.8 2.6 2.3 1.7 2.2 2.4 1.1 2.7 2.0ab 24.1b
2000 1.6 2.2 2.3 1.9 2.1 2.5 2.2 2.0 2.7 1.9 1.3 3.2 2.2ab 26.0b
2254 1.6 1.9 2.5 2.4 2.6 2.7 2.5 2.1 3.1 2.9 1.8 3.6 2.5a 29.9a
Averagec 1.3ef 1.3def 1.9abcd 1.8bcdef 1.7bcdef 2.2ab 1.8abcde 1.6cdef 1.9abcde 2.1abc 1.0f 2.8a

aSevere frosts during the winter affected the tree growth.

bHigh temperatures (>30°C) during the bloom period affected the fruit set.

c

Means with the same letter are not significantly different according to Friedman test followed by Dunn's comparison adjusted by Bonferroni at P = 0.05.

d

Means with the same letter are not significantly different according to ANOVA followed by Tukey test at P = 0.05.