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Cotton > Year-Round IPM Program > Early Squaring > Calculate Expected Square/Fruit Retention

Cotton

Calculate Expected Square/Fruit Retention

To find the expected square/fruit retention, evaluate results from your lygus and square/fruit retention sampling. The values you need are:

  • Total number of fruiting branches.
  • Percent fruit retention on both the bottom and top 5 fruiting branches.

This calculator will compare your sampled percent retention for the top 5 first position squares with an expected value based on research.

You may also use this table to determine the expected percent retention.

Expected retention (%) of the first position fruit on the top 5 fruiting branches, from data for Acala cotton.
 
Total
Fruiting
Branches		 Percent retention of the first position fruit on the BOTTOM 5 fruiting branches
102030405060708090100
Less than 5 The expected retention of the top 5 first fruiting positions is 73%. The retention on the first fruiting branch is erratic and at least 3 branches should be present before lygus decisions are made.
573737373737373737271
673737373737372727069
773737373737271706865
873737373727169666360
973737271706865625853
1073727169676560565146
1171706866625854494439
1269676461565146413732
1366635954494439353027
1461575247423733292522
1555504540353127242118
1648433833292522201816
1740363128242119171514
1834292623201816141312
1928242119171514131211
2023201816151312111110

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