====== Shortleaf/Loblolly Thinning Guides ======
====Shortleaf Pine Thinning Guide - Trees 4" D.B.H. & Over Leave Basal Area (Sq.ft.) for Site Index====
^Age  ^40  ^50  ^60  ^70  ^80  ^90  |
|20   |    |    |    |58  |70  |80  |
|25   |    |55  |69  |82  |88  |91  |
|30   |55  |72  |85  |92  |93  |95  |
|35   |68  |83  |92  |94  |96  |97  |
|40   |77  |89  |93  |95  |97  |98  |
|45   |82  |90  |93  |95  |97  |98  |
|50   |84  |91  |93  |96  |97  |99  |
|60   |86  |91  |94  |96  |97  |99  |

====Loblolly Pine-Thinning Guide- Trees 4" D.B.H & Over Leave Basal Area (Sq.ft.) for Site Index====
^Age  ^60  ^70  ^80  ^90  ^100 ^110 |
|15   |    |    |    |    |58  |63  |
|20   |    |61  |67  |72  |76  |81  |
|25   |66  |73  |78  |82  |85  |89  |
|30   |74  |80  |83  |87  |90  |95  |
|35   |79  |84  |87  |89  |93  |98  |
|40   |83  |86  |89  |92  |96  |100 |
|45   |85  |88  |91  |94  |97  |102 |
|50   |87  |89  |92  |95  |99  |104 |
|55   |88  |91  |93  |96  |100 |105 |
|60   |89  |92  |95  |97  |101 |106 |

Leave tables are 57% of normal (Misc.Pub.50). Thin at 80% or over of B.A. of fully stocked stand. To 
determine time for thinning- assume that the stand will approach normal at the rate of 4% per year, 
i.e. 68% Normal basal area- thin three years hence. (80-68)/(4) = 3\\
Virginia Division of Forestry