EFFECTS OF COMBINATIONS OF TRIPLE SUPERPHOSPHATE AND A REACTIVE PHOSPHATE ROCK ON YIELD AND PHOSPHORUS UPTAKE BY CORN

被引：34
|
作者：
CHIEN, SH [1 ]
ADAMS, F [1 ]
KHASAWNEH, FE [1 ]
HENAO, J [1 ]
机构：
[1] TENNESSEE VALLEY AUTHOR, NATL FERTILIZER DEV CTR, AGR RES BRANCH, MUSCLE SHOALS, AL 35662 USA
来源：
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1987年 / 51卷 / 06期
关键词：
FARMS; -; Crops; GREENHOUSES; PHOSPHATES; Efficiency;
D O I：
10.2136/sssaj1987.03615995005100060045x
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
A combination of finely ground phosphate rock (PR) and triple superphosphate (TSP) represents a method that can improve the agronomic value of PR at a lower cost than would be required to manufacture the conventional, fully acidulated fertilizers from that same rock. A reactive PR from North Carolina was evaluated for its effectiveness as a P source when used in conjunction with TSP at P rates up to 266 mg P kg** minus **1 in a short-term (6-week) greenhouse experiment. The soil used was a limed Mountview silt loam (Typic Paleudult) with pH 6. 2. As measured by dry-matter yield and P uptake, P availability from PR appeared to increase with increases in the proportions of TSP to PR in the TSP-PR mixtures.
引用
收藏
页码：1656 / 1658
页数：3
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