Sprout
Bud, Shoot
noun
A new sprout is a sprout or bud or shoot. All sprouts are new, after all.
The reading is the readings you learned with the kanji, combined.
このペースじゃ、夕方までにお茶の新芽を摘み終わるのは無理じゃないかな。
At this rate, it will be impossible to finish picking all the tea sprouts by evening.