Could not have got poet at 23a without recourse to google. Indian word in 3d is spelt differently in Chambers. 8d was a very hard nut to crack.
ACROSS
4 Bard’s not often displayed in Welsh (don’s translated)
SELDSHOWN (WELSH DONS)*
12 Male brought in gin for prostitute
TRAMP M in TRAP
13 African tree I accepted, used in stimulant
KIAAT (I A) in KAT kat, khat or qat is shrub with leaves which act as stimulant
14 Sculptures initially found in banks
RELIEFS F in RELIES
15 No special vivacity shown by racehorse
ARKLE {sp}ARKLE
16 Expression of joy during Spain and Holland’s theatrical Ring?
ENWHEEL WHEE in E (Espana) and NL (Netherlands)
18 Last remark? About time
STAY T in SAY
19 Tolerate most of tree having dead interior
ABIDE D in ABIE{s} Abies genus of true firs
20 Subdued tailoring of folded pleats
SOFT-PEDALLED (FOLDED PLEATS)*
23 US poet disrupted entire flight
FERLINGHETTA (ENTIRE FLIGHT)*
24 Section of sculpture I constructed of waste
UREIC scuptURE I Constructed
27 One Pacific nation accepting European girl from Spain
INEZ E in I NZ (New Zealand)
31 Send out sea creature tail first
EMANATE MANATEE last letter moved to front
32 Shock about dog’s tail exhibiting this?
MANGE G in MANE
33 Particle responsible for temperature in body cell
NEUTRON T in NEURON
34 Handle old stories about Tesla adding a twist
STEIL T in LIES<
35 Nationalists upset English, providing Edinburgh Rock
STANE NATS< E Scottish for stone
36 Explosive material in US: bit of tension in fellow following arms treaty
SALTPETER T in PEER after SALT acronym Strategic Arms Limitation Talks
DOWN
1 Fluster at sea around ship may be this
STRESSFUL SS in (FLUSTER)*
2 Ancient drowned valley around river Tyne’s origin
DRENT R in DEN T
3 Indian sweetmeat consumed in Chandigarh? Always
HALWA chandigarH ALWAys different spelling in Chambers
5 Weapons in European waters
EPEES E + PEES
6 Heavy punishment for student, one high on drug trapped by criminal
LIFE SENTENCE L I (SENT E) in FENCE
7 Change of position had disrupted golden times
DISLODGEMENT D (GOLDEN TIMES)*
8 Trying ice, having no money for horse
SKAG SKA{tin}G horse = heroin
9 Greeting half-hearted crowd, ready for work
HIRABLE HI RAB{b}LE
10 I walk to wood observing tree disease
OAK WILT (I WALK TO)* wood as anagram word? – suspect it should be work
11 Picked for Dundee United, bagging a goal finally
WALED A {goa}L in WED waled is Scottish for picked
17 Business need possibly involving editor being gaudily dressed
BEDIZENED ED in BIZ (NEED)*
21 Frequency connected with optical unit turning up here
FRESNEL FRE LENS<
22 Certain Alaskan bird circling heather
TLINGIT LING in TIT Native American people living in Alaska and British Columbia
25 Star releasing line after twirling – this line?
RIATA A{l}TAIR<
26 Prompt action around university
CAUSE U in CASE
28 Fruit and resin brought up
NARAS SARAN<
29 Suit seed to switch ends?
ETONS STONE switching S and E
30 Certainly gathering bit of larch bark
YELP L in YEP
( )* = anagram { } = omit < = reverse
Slight typo I think. 23 a is Ferlinghetti.
The spelling of 3 down is variable because of transliteration, so nothing to worry about if Chambers has it differently. Think of how many ways there are to transliterate pilao rice!
Thanks for the blog Jed.