Effect of fluorine and phosphorus on the growth and chemical composition of wheat in sodic soils

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dc.contributor.advisorDahiya, S.S.
dc.contributor.authorBhardwaj, Seema
dc.date.accessioned2016-11-29T11:46:20Z
dc.date.available2016-11-29T11:46:20Z
dc.date.issued2006
dc.description.abstractScreen house experiments were conducted to investigate the effect of varying levels of fluorine (0, 50, 100 and 200 mg kg-1) and phosphorus (0, 12.5, 25 and 50 mg kg-1) at varying ESP levels (0, 30, 45 and 60) on the yield and chemical composition of wheat in sodic soil. The soil of different ESP 0, 30, 45 and 60 were prepared by applying different amount of sodium bicarbonate in distilled water to the calculated volume of saturation percentage of soil. The observed ESP were 5.8, 26.3, 44.5 and 56.6, respectively. The results revealed that in grain with application of P the yield increase 50.17% in ESP 5.8 and 190% of at ESP 56.6 at maximum level of (50 mg kg-1). The decrease in straw yield was 15.18% at ESP 5.8 and 21.3% at ESP 56.6 and with application of P the yield increase was 43.74% at 5.8 ESP and 30.65% at ESP 56.6 at maximum level of P (50 mg kg-1) as compared to control. The grain and straw yield decreased with increasing levels of fluorine at maximum level of F (200 mg kg-1) along with increasing ESP and with the application of P the yield of both grain and straw increased. The adverse effect of added F was more marked at higher ESP level and the deleterious effect of added F was counteracted to some extent by addition of phosphorus. The fluoride concentration in both grain and straw increased clearly with increasing level of added F and P concentration in soil along with increase in ESP and P concentration in grain and straw of wheat also increased with increasing level of P but decreased with increasing level of F while concentration decreased with higher ESP. The application of F also resulted in decreased Ca, Mg, K, Zn and Mn concentration in the plant while no definite trend was observed on Na and Cu concentration in wheat straw and grain. The laboratory experiment was carried out to study the effect of incubation on extractability of F and P in soil at ESP 5.8 and ESP 56.6, incubation studies were conducted with levels of fluorine ranging from 0 to 100 mg kg-1 and P ranging from 0 to 50 mg kg-1 at incubation periods varying from 1, 2, 3, 7, 14, 21, 28, 35 day at 250C. Moisture was maintained at field capacity by addition of distilled water. The results indicated that extractability of F in soil increased with increasing levels of P and F application alongwith increased ESP. Similarly Olsen’s extractability of P in soil also increased with increasing levels of F, P and ESP. However the extractability of both F and P decreased with increase in incubation period.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/88065
dc.language.isoenen_US
dc.publisherCCSHAUen_US
dc.subSoil Scienceen_US
dc.these.typeM.Sc
dc.titleEffect of fluorine and phosphorus on the growth and chemical composition of wheat in sodic soilsen_US
dc.typeThesisen_US
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