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L e o n a r d О. A., P i n c k e r d J. A. Effect of various oxygen and carbon

dioxide conceptions on cotton root development. Plant Physiol., 21, 1946.

L e u k e l W. A. Deposition and utilization of reserve foods in alfalfa plants.

Journ. Amer. Soc. Agron., 19, 7, 1927.

L e u k e l W. A., C o l e m a n J. M. Growth behaviour and maintenance of orga­

nic food reserves in Bachia grass. Techn. Bull. 219, Florida. Agric. Exp. Sta.,

1920

.

L in со la R. Ueber die Dauer und Jahresklassenverhaltnisse des Jugendstadium

bei einiger Wiesenstanden. Acta forestalia fennica 42, 2, 1936.

L a v v o r n R. L. The effect of defoliation, soil fertility, temperature and length

of day on the growth of some perennial grasses. Journ. Amer. Soc. Agron.

37, 1945.

Ma r k J. J. The relation of reserves to cold resistence in alfalfa. Res. Bull,

Journ. Exp. Sta. 208, 1936.

M a у L. U. The utilization of carbohydrate reserves in pasture plants after de­

foliation. Herb. Abst., 30, 4, 1960.

M e j e r s P. G., G o e d e n w a a g e n M. A. J. Een onderzoek mas de bezorteling

von Luzerne (A study of the root system of lucerne) Verse. Land, bouwkan-

derzock. Groningen. Herb. Abst., 42, 1936.

M i t c h e l l

K.

F. Influence of light and temperature on growth of ryegrass

(Lolhrni spp.)

I I I .

Pattern and rate of tissue formation. Plant Physiol., 7,

1954.

M о 1i s c h H. Die Lebensdauer der Planze, 1929.

M о о n F. E. The caroten-contents of some grass and clover species with a note on

pasture weeds. Empire Journ. Exp. Agr. VII, 2, 1939.

N e l s o n N. T. The effect of frequent cutting on the production root reserves

and behaviour of alfalfa. Journ. Amer. Soc. Agron. 17, 1925.

N i c h o l s o n H. H. Field drainage and increased production.. J. R. Agr. Soc.

109, 194(9.

N i s c h i m u r a M. Comparative morphology and development of Poa praten-

sis, Phleum pratense and Setaria italica. Japan. Journ. Botany, 1923.

O s w a l d H. On antagonism between plants. Proceed. Seventh. Internat. Bot.

Congr. 1950.

P i e r r e W. H., В e г t r a mm F. E. Kudzu production with special reference

to influence of frequency of cutting on yield and formation of root reserves.

Journ. Amer. Soc. Agron. 21, 1929.

R a t h e r H. C., Do гг а пс е A. B. A study of the time of pasturing alfalfa.

Journ. Amer. Soc. Agron. 30, 1938.

R a u n c k i a e r C. The life forms of plants and statistical plant geography being

the collected papers. Oxford, 1934.

Re i d M. E. Effects of shade on the growth, of velvet bent and metropolitan

creeping bent. Bull. U. S. Golf. Ass. Green sect., 13, 1933.

R o b e r t s o n J. H. Effect of frequent clipping on the development of certain

grass seedlings. Plant. Physiol.,

8

, (425), 47, 1933.

R o b e r t s R. A., H u n t I. V. The effect of the shoot cutting on the growth of

root and shoot of perennial ryegrass (Lolium perenne) and timothy (Phle­

um pratense) Welsh, J. Agric. 12, 1936.

R u e b e 1 E. Alpenmatten Ueberwinterungstadien. Festschritt Karl Schroter.

Verofent. des Geobot. Inst. Hubei in Zurich, 192(5.

R u s s e l W. I. Surface saturation of grassland on the weald and London clay.

J. Brit, grass. Soc. 13, 1, 1958.

S a l m o n S. C., S w a n s o n C. 0„ C a m p b e l l C. W. Experiment relating

to the time of cutting alfalfa. Agr. Exp. Sta. Kansas. Tech. Bull. 15, 1925.

S a m p s o n A. Plant succession in relation to range management. U. S. Dep.

Agr. Bull. 791, 1919.

S c h a r m a n В. C. The biology and developmental morphology of the grami-

neae. New Phytologist. 46, 1, Combrige, 1947.

363

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