WDP, Al Machfudz, and Ulfa Suci Rachmawati. 2017. “The Effect Of Growing Natural Growth (Zpt) In Growth And Plant Production Of Okra (Abelmoschus Esculentus)”. Nabatia 5 (2), 101-16. https://nabatia.umsida.ac.id/index.php/nabatia/article/view/865.