Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils

Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils

Phosphorus (P) use efficiency for cucumber grown on acid soils was studied. The objectives of this experiment were: (i) to screen the solubility of three phosphate rocks in acid soils with the aim of selecting one phosphate rock (PR) with the best P and calcium (Ca) solubility in acid soils - a l...

Full description

Saved in:
Bibliographic Details
Main Author: Hilman, Yusdar
Format: Thesis
Language:English
English
Published: 2003
Subjects:
Cucumbers - Phosphorus - Case studies
Online Access:http://psasir.upm.edu.my/id/eprint/10634/1/FP_2003_3.pdf
Tags: Add Tag
No Tags, Be the first to tag this record!
id my-upm-ir.10634
record_format uketd_dc
spelling my-upm-ir.106342024-04-30T08:32:03Z Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils 2003-04 Hilman, Yusdar Phosphorus (P) use efficiency for cucumber grown on acid soils was studied. The objectives of this experiment were: (i) to screen the solubility of three phosphate rocks in acid soils with the aim of selecting one phosphate rock (PR) with the best P and calcium (Ca) solubility in acid soils - a laboratory study, (ii) to determine the most economical P source, critical P level, and the relationship between P uptake (Ps) and phosphorus dissolution from PR (PDP) or Pb/P - green house study, and (iii) to improve upon P availability in an acid soil cultivated with cucumber influenced by mycorrhiza (VAM) inoculation, organic matter (OM) amendment and P rate - field study. Results of the experiment indicated that in a closed incubation system, dissolution of Indonesian phosphate rock (IPR) (30.20 to 100.00%) was the highest followed by Gafsa phosphate rock (GPR) (17.00 to 68.80%) and then China phosphate rock (CPR) (19.80 to 53.80%). Three major factors which may affect the PR dissolution were identified: (i) soil texture (STF), (ii) soil acidity (SAF) and (iii) fertilizer (FF). Soil texture (clay, silt and sand contents) and P retention capacity showed the highest magnitude (54%) of the factor effect on P dissolution. In a green house, there was significant difference between soils and P levels with regards to total plant dry matter yield (DMY), leaf area, soil N, K and Ca nutrients, and N, K and Ca uptake by cucumber at three harvests extending from 14 to 42 days. The IPR (RAE = 177.10%) and GPR (RAE = 145.50%) were superior to triple superphosphate (TSP). On the soils with high P retention capacity (> 50%), the supply of P from both IPR and GPR on cucumber were much cost effective than TSP, with relative economic effectiveness (REE) values of 495.50% and 318.60% for IPR and GPR, respectively. For GPR, there was a positive correlation between P uptake (L\Ps) and P dissolution (L\P) as well as P uptake (L\Ps), and P availability (L\Pb). Similar observation was made for IPR and not TSP. There was a close relationship between residual P determined by Pb method and P uptake (Ps) by cucumber at 28 and 42 days with correlation coefficients varying from 0.76 to 0.97 for GPR, IPR and TSP in the three acid soils. Cucumbers - Phosphorus - Case studies 2003-04 Thesis http://psasir.upm.edu.my/id/eprint/10634/ http://psasir.upm.edu.my/id/eprint/10634/1/FP_2003_3.pdf text en public doctoral Universiti Putra Malaysia Cucumbers - Phosphorus - Case studies Faculty of Agriculture Abdul Rahim, Anuar English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
advisor Abdul Rahim, Anuar
topic Cucumbers - Phosphorus - Case studies
spellingShingle Cucumbers - Phosphorus - Case studies


Hilman, Yusdar
Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
description Phosphorus (P) use efficiency for cucumber grown on acid soils was studied. The objectives of this experiment were: (i) to screen the solubility of three phosphate rocks in acid soils with the aim of selecting one phosphate rock (PR) with the best P and calcium (Ca) solubility in acid soils - a laboratory study, (ii) to determine the most economical P source, critical P level, and the relationship between P uptake (Ps) and phosphorus dissolution from PR (PDP) or Pb/P - green house study, and (iii) to improve upon P availability in an acid soil cultivated with cucumber influenced by mycorrhiza (VAM) inoculation, organic matter (OM) amendment and P rate - field study. Results of the experiment indicated that in a closed incubation system, dissolution of Indonesian phosphate rock (IPR) (30.20 to 100.00%) was the highest followed by Gafsa phosphate rock (GPR) (17.00 to 68.80%) and then China phosphate rock (CPR) (19.80 to 53.80%). Three major factors which may affect the PR dissolution were identified: (i) soil texture (STF), (ii) soil acidity (SAF) and (iii) fertilizer (FF). Soil texture (clay, silt and sand contents) and P retention capacity showed the highest magnitude (54%) of the factor effect on P dissolution. In a green house, there was significant difference between soils and P levels with regards to total plant dry matter yield (DMY), leaf area, soil N, K and Ca nutrients, and N, K and Ca uptake by cucumber at three harvests extending from 14 to 42 days. The IPR (RAE = 177.10%) and GPR (RAE = 145.50%) were superior to triple superphosphate (TSP). On the soils with high P retention capacity (> 50%), the supply of P from both IPR and GPR on cucumber were much cost effective than TSP, with relative economic effectiveness (REE) values of 495.50% and 318.60% for IPR and GPR, respectively. For GPR, there was a positive correlation between P uptake (L\Ps) and P dissolution (L\P) as well as P uptake (L\Ps), and P availability (L\Pb). Similar observation was made for IPR and not TSP. There was a close relationship between residual P determined by Pb method and P uptake (Ps) by cucumber at 28 and 42 days with correlation coefficients varying from 0.76 to 0.97 for GPR, IPR and TSP in the three acid soils.
format Thesis
qualification_level Doctorate
author Hilman, Yusdar
author_facet Hilman, Yusdar
author_sort Hilman, Yusdar
title Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
title_short Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
title_full Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
title_fullStr Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
title_full_unstemmed Phosphorus Use Efficiency for Cucumber (Cucumis Satnus L.) Grown on Acid Soils
title_sort phosphorus use efficiency for cucumber (cucumis satnus l.) grown on acid soils
granting_institution Universiti Putra Malaysia
granting_department Faculty of Agriculture
publishDate 2003
url http://psasir.upm.edu.my/id/eprint/10634/1/FP_2003_3.pdf
_version_ 1804888581935726592

Similar Items