| Titles |
|
English :
|
Effect of phosphate fertilization and p-dissolving organisms (P.D.O) on wheat plant grown on a sandy soil in relation to their economic benefits.
|
|
Arabic :
|
تأثير التسميد الفوسفاتى والكائنات المذيبة للفوسفات على نبات القمح النامى فى الاراضى الرملية ومدى الفائدة الاقتصادية
|
|
| Abstract |
Two field experiments were conducted at Ismailia Agricultural Research Station during two successive seasons of 2000/2001 and 2001/2002 to study the effect of ordinary super phosphate (O.S.P), rock phosphate (R.P) at rates (0, 15, 30 and 45 kg P2O5/fed) and P-dissolving organisms (P.D.O) on wheat (Triticum aetivum L.). A quadratic polynomial equation was used to describe the response of grain, straw and biological yields as well as N,P and K uptake by wheat plant.
Obtained results showed that:-
1- Yields of wheat plant (grain, straw and biological yields) as well as NPK uptake were significantly affected by P-fertilizer sources. In this respect ordinary superphosphate had superiorly impact comprising with rock phosphate fertilizer.
2- Increasing P-fertilizer levels led to in significant increase in grain, straw and biological yields NPK content.
3- The inoculation with P-dissolving organisms was more pronounced in the presence of added P-fertilizers. The relative yield was 149.77% was obtained with ordinary superphosphate + P.D.O at rates 30 kg P2O5 /fed, while the relative yield was 141.19% with rock phosphate (R.P) + P.D.O) at rate 45 kg P2O5 /fed .
4- The polynomial equation and its derivatives as in good agreement with the economic optimum yield for grains, straw and biological yields under different P-fertilizers with or without inoculation.
5- The optimum economic yield of 1.707 ton /fed grains, 2.807 ton/fed straw and 4.539 ton/fed biological yield with O.S.P without Inoculation obtained by the economic fertilizer P-rates of 33.85, 32.5 and 33.75.kg P2O5 respectively. While, the optimum economic yields of 1.876 ton grains, 3.212 ton straw and 5.050ton /fed biological yield with (O.S.P + P.D.O) were obtained by the economic fertilizer P-rates of 30.9, 30.75 and 30.15 kg P2O5/fed respectively.
6- For rock phosphate (R.P) without P.D.O, the optimum economic yield of 2.234 ton /fed grains, 4.366 ton/fed straw and 7.099 ton/fed biological yield obtained by the economic fertilizer P-rates of 128.8, 192.2 and 188.36 kg P2O5 respectively. While, the optimum economic yields of 2.298 ton grains, 3.273 ton straw and 5.4 ton /fed biological yield were obtained by the economic fertilizer P-rates of 90.7, 79.9 and 80.97 kg P2O5/fed respectively.
7- Rock phosphate applications at high levels with inoculation of P-dissolving organisms are needed more studies to confirm these results.
8- It is concluded that P-fertilization and inoculation with P-dissolving organisms have great importance in increasing wheat productivity and grain nutrients content.
|
| Publication year |
2003
|
| Pages |
374-390
|
| Availability location |
The Egyptian Society of Applied Sciences
|
| Availability number |
|
| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
|
| Country |
Egypt
|
| City |
Zagazig
|
| Publisher |
Name:
The Egyptian Society of Applied Sciences
|
| serial title |
Egyptian Journal of Applied Sciences
|
| ISSN |
1110-1571
|
| Volume |
18
. 4ِِA
|
| Department |
Sandy and Calcareous Soils Research
|
| Author(s) from ARC |
|
| Agris Categories |
Soil erosion, conservation and reclamation
|
AGROVOC
TERMS |
Rock phosphate.
Sandy soils.
Superphosphate.
Wheats.
|
| Proposed Agrovoc |
Phosphorus dissolving organism;Polynomial equation;
|
| Publication Type |
Journal
|