000			01748nab a22003137a 4500
001			G68931
003			MX-TxCIM
005			20231006165525.0
008			231006s1966 xxk|||p|op||| 00| 0 eng d
022			_a0021-8901
022			_a1365-2664 (Online)
024	8		_ahttps://doi.org/10.2307/2401670
040			_aMX-TxCIM
041	0		_aeng
090			_aREP-1453
100	1		_aNewman, E.I. _931811
245	1	2	_aA method of estimating the total length of root in a sample
260			_aUnited Kingdom : _bBritish Ecological Society, _c1966.
340			_aPrinted
520			_aThe roots are laid out on a flat surface, and a count is made of the number of intersections between the roots and random straight lines. Then the total root length = πNA/2H, where N is the number of intersections, A the area within which the roots lie, and H the total length of the straight lines. Details are given of a technique in which a microscope hair-line provides the straight lines. In practical tests the method was compared with direct measurement, and with direct measurement of a sub-sample followed by weighing of the sub-sample and the remainder. The results from the different methods agreed well. The line intersection method was much quicker than direct measurement, and in a given time achieved higher precision than measurement of a sub-sample and weighing.
546			_aText in English
595			_aRPC
650		7	_2AGROVOC _91755 _aRoots
650		7	_2AGROVOC _931812 _aRoot length
650		7	_2AGROVOC _911634 _aRoot systems
650		7	_2AGROVOC _91207 _aPlant ecology
773	0		_tJournal of Applied Ecology _gv. 3, no. 1, p. 139-145 _dUnited Kingdom : British Ecological Society, 1966. _wG444506 _x0021-8901
942			_cJA _2ddc _n0
999			_c19581 _d19581