DISEMINASI DAN KINERJA INOVASI TEKNOLOGI BUDI DAYA PADI PADA BEBERAPA AGROEKOSISTEM DI SUMATERA UTARA / The Dissemination and Performance of Rice Cultivation Technology Innovation in Several Agro-ecosystems in North Sumatera - Musfal, Musfal; BPTP Sumut (Badan Penelitian dan Pengembangan Pertanian, 2019)