Cryptic crossword No 3,503

Across

1. He used manure under soil initially then compost (5)
2. Company takes on learner somewhat (6)
3. Silly blunder: why we hear (5)
4. Vital worker carrying load (9)
5. A tap angled (5)
6. Case of aboriginal apothecary and sorcerer (9)
7. Communicated with former lover and media executive director (9)
8. Stealthily and surreptitiously lynch bears (5)
9. Child and daughter announced (6)
10. Gift here (7)
11. Supplement a writer put on page ten in Le Parisien (8)
12. Space around Pennsylvania and Philadelphia? (8)
13. Measures and understands (7)
14. Wheels broken here, hours slipped away (9)

Down

1. Despite operating room injection being painstaking (8)
2. Laughed and reflected about answer (6)
3. Popular leaders provide utilities, building libraries in cities (6)
4. E.g. instance (7)
5. Impact frequency on the radio etc, scrambled (6)
6. Track right and south for ships (6)
7. Accurate cowboy lassoing pony initially (6)
8. Drunk raps and fight (4)
9. Method of using application for bug? (8)
10. Round during news flash (8)
11. Fashioned dame cast (4)
12. Elastic eye infection, swallowing vomit (8)
13. Spirit of German city church (7)
14. Does a runner around ten bends (6)