LAGERSTROEMIA 



597 



Lagerstroemia parvijlora : girth increment in high forest sample ]3lots. 



I'ovince. 



ited 

 Provinces 



itral 

 ovinces 



Forest 

 division. 



Dehra Dun 

 Saharanpur 



Lansdowne 

 Haldwani 



S. Kheri 

 Balaghat 



Locality. 



Thano and 



Kansrao 



Dholkhand 



Lakarkot 



Malowala 



Andermajhera 



Kaiu'ia 



Aonla Khera 



Chilla 



Khonani 



Kishanpiir 



Raigarh 



J 



Number of 



years under 



measurement. 



17 



17 

 4 

 4 



11 

 6 

 9 



8 



Xumber of 



trees under 



measurement 



1? 



f ^ 



32 



I 4 

 12 

 3 

 1 

 4 

 5 

 2 

 1 

 1 



Girth 



classes. 



ft. 



1-2 



2-3 



0-1 



1-2 



2-3 



0^ 



li-3 

 0-1 i 

 3-6 



li-6 

 2-3 

 1-2 

 2-3 



Mean annual 



^irth increment 



for period. 



in. 



0-13 



0-30 



0-23 



0-23 



0-34 



0-11 



0-14 



0-40 



0-34 



0-31 



0-10 



0-09 



0-03 



These figures indicate a decidedly slow rafce of growth. The sample plots 

 in question, however, are all in sal forest, and presumably many of the Lager- 

 stroemia trees are dominated or even suppressed. 



The follomng rate of growth has been deduced from measurements of 

 41 trees in the Dholkhand, Lakarkot, and Malowala sal sample plots, Saharan- 

 pur forest division. United Provinces, and of 22 trees scattered in sal sample 

 plots in the Buxa forest division, Bengal : 



Lagerstroemia parviflora : rate of growth in high forest, Saharanpur and Buxa 



divisions. 



A cross-section 4 ft. 6 in. in girth in the silvicultural museum, Dehra Dun, 

 had 56 rings, giving a mean annual girth increment of 0-9(5 in. 



2. Coppice. The rate of growth of Lagerstroemia parviflora coppice is at 

 first usually more rapid than that of sal, but the latter afterwards outgrows 

 the former. The follomng are some recorded measurements of young coppice- 

 shoots : 



Lagerstroe^nia parviflora : rate of gro^\th of young coppice, compared with sal 



or teak iji the same coupes. 



Height. 



Locality. 



Gonda, United Provinces 



GorakhiJiu', United Provinces 



Thano, Dehra Dun, United Provinces 

 Bhandara, Central Provinces . 



Age. 



years. 



1 



2 



12 



li 



o 

 1 



Lagerstroemia 

 par vi flora. 



ft. 



6-8 

 10-3 



9-.5 



7-8 



7-3 



9-1 

 1.5-01 



6-3 



71 



Mean girth 6 in. 



