Hanafi
The sources give no view for it here.
وجوب الزكاة في الزروع
هل تجب الزكاة في الزروع من حيث الجملة؟
Each school’s answer
In our wordsHanafi
Not stated in the sources
Maliki
Not stated in the sources
Shafi'i
Not stated in the sources
Hanbali
Not stated in the sources
The texts
زَكَاةُ الزُّرُوعِ: ٤ - أَجْمَعَتِ الأُْمَّةُ عَلَى أَنَّ الزَّكَاةَ وَاجِبَةٌ فِي الزُّرُوعِ مِنْ حَيْثُ الْجُمْلَةُ. وَتَفْصِيل ذَلِكَ فِي مُصْطَلَحِ (زَكَاة) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «زرع» vol. 23 p. 221
From the schools’ own books
Maliki
The sources give no view for it here.
Shafi'i
The sources give no view for it here.
Hanbali
The sources give no view for it here.
What is «in our words» is our standard wording; the books’ texts stay as they are.