Some Economic Aspects of the Application of Phosphates to Permanent Pastures in Ireland

Neenan, Michael; Murphy, William H.; Conway, A.

doi:10.1111/j.1365-2494.1961.tb00211.x

Grass and Forage Science

1961

DOI: 10.1111/j.1365-2494.1961.tb00211.x

|View full text |Cite

Some Economic Aspects of the Application of Phosphates to Permanent Pastures in Ireland

Michael Neenan

William H. Murphy

A. Conway

Abstract: During the years 1957 to 1959 a number of trials carried out at various centres throughout the country showed that the yield of Irish pastures could be greatly increased through the application of fertilizers. Phosphorus increased both yield and the protein content of herbage. The increase in yield was a linear function of the initial P status of the herbage. For the series as a whole, phosphorus increased the yield by approximately 20%, potassium by 7% and phosphorus and nitrogen by 45%. The national and soci… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1966

1967

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 4 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

The value of liquid digested sewage sludge. II. Experiments on rye-grass in South-east England, comparing sludge with fertilizers supplying equivalent nitrogen, phosphorus, potassium and water

Coker¹

1966

J. Agric. Sci.

View full text Add to dashboard Cite

In a factorial trial comparing liquid digested sludge with equivalent water, and inorganic nitrogen, phosphorus, and potassium fertilizers, almost all the effects observed could be attributed to the uptake of nitrogen or potassium.Over the 2-year period of treatment application, liquid digested sludge and equivalent inorganic fertilizer nitrogen and potassium gave similar responses of 22.3 and 23.8 lb. dry matter per lb. of nitrogen, and 59 lb./acre K increased the response to inorganic nitrogen alone by 5.4 lb./lb. of nitrogen.Over the 2-year period of treatment the amount of potassium absorbed by herbage, in excess of that applied, was greater with fertilizer nitrogen than with liquid digested sludge. Added potassium had no direct effect on crude protein production. Liquid digested sludge and inorganic nitrogen fertilizer increased crude protein to a similar extent.

show abstract

The value of liquid digested sewage sludge. II. Experiments on rye-grass in South-east England, comparing sludge with fertilizers supplying equivalent nitrogen, phosphorus, potassium and water

Coker¹

1966

J. Agric. Sci.

View full text Add to dashboard Cite

show abstract

The Residual Value Over Thirteen Years of Rock Phosphate and Superphosphate on a Permanent Grass Sward

Edwards¹

1967

Grass and Forage Science

View full text Add to dashboard Cite

Over 13 years, 12 cwt/ac of ground rock phosphate (29% P2O5) were applied to an old grass sward, either completely in the first year or in equal amounts in each of the first 4 years; alternatively, 18 cwt superphosphate/ac were applied either in 3 equal amounts at 4-yearly intervals, or in equal amounts annually over the first 12 years.In the first year, the larger dressing of superphosphate gave the best response, measured as fresh herbage cut in mid-July each year, but during the next 7 years all methods of application gave similar yields. Dressings of rock phosphate gave progressively poorer response after 7 years and plots so treated were not significantly better than the control in the final year. At the end of the experiment, plots receiving annual applications of superphosphate yielded most herbage and those which had received superphosphate at 4-yearly intervals still showed a significant response. Phosphate in rock phosphate applied as a single dressing was tvyo-thirds as effective over an 8-year period as that in superphosphate applied annually.The small difference over 12 years in phosphate uptake from 3 dressings of superphosphate compared with its equivalent in annual applications suggested that little phosphate fixation was taking place. The fact that a single dressing of rock phosphate was able to maintain yields and phosphate uptake close to that obtained from annual applications over 7 years supports this and suggests that the failure to utilize one third of the phosphate in rock phosphate was mostly due to initial insolubility.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Some Economic Aspects of the Application of Phosphates to Permanent Pastures in Ireland

Cited by 2 publications

References 4 publications

The value of liquid digested sewage sludge. II. Experiments on rye-grass in South-east England, comparing sludge with fertilizers supplying equivalent nitrogen, phosphorus, potassium and water

The value of liquid digested sewage sludge. II. Experiments on rye-grass in South-east England, comparing sludge with fertilizers supplying equivalent nitrogen, phosphorus, potassium and water

The Residual Value Over Thirteen Years of Rock Phosphate and Superphosphate on a Permanent Grass Sward

Contact Info

Product

Resources

About