Effect of Exchangeable Sodium on the Yield and Chemical Composition of Five Forage Grass Species

Kumar, Ashok and Abrol, I P (1979) Effect of Exchangeable Sodium on the Yield and Chemical Composition of Five Forage Grass Species. Forage Research, 5 (2). pp. 101-108.

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The tolerance of Pennisetum purpureum X P. americanum, Brachiaria mutica, Panicum maximum, Setaria sphacelata and Cynodon dactylon to excess exchangeable sodium was studied during 1974 in a pot experiment. Levels of excess exchangeable sodium percentage (ESP) of 16, 34, 50, 64 and 80 were achieved. A basal dose of fertilizer containing 20 p.p.m. N, 20 p.p.m. P, 15 p.p.m. K and 12.5 p.p.m. ZnSO4 was applied/pot, with a further dose of 20 p.p.m. N applied 6 wk after planting and subsequently after every cut. B. mutica showed 100% survival at all ESP levels whereas C. dactylon showed complete survival at 16 and 34% ESP and 97, 95 and 90% survival at 50, 64 and 80% ESP, resp. Establishment of S. sphacelata and P. purpureum X P. americanum was adversely affected by increasing ESP while P.maximum was highly susceptible. Green forage yields decreased with increasing ESP; yields of B. mutica, C. dactylon, P. purpureum X P. americanum and S. sphacelata were reduced by 45, 50, 86 and 70%, resp., at 80% ESP while P. maximum gave no yield. Increasing ESP decreased CP, Ca, Mg and K contents and increased Na content of the grasses.

Item Type: Article
Author Affiliation: Central Soil Salinity Research Institute Karnal -132001, India
Subjects: Crop Improvement > Plant Breeding
Plant Physiology and Biochemistry > Biochemistry
Divisions: General
Depositing User: Library ICRISAT-InfoSAT
Date Deposited: 31 Mar 2012 10:35
Last Modified: 31 Mar 2012 10:35
URI: http://eprints.icrisat.ac.in/id/eprint/4445

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