Abstract
ABSTRACT Cocoa ( Theobroma cacao L.) is one of the large plantations after oil palm. The increase in cocoa nursery can be accompanied by the utilization of waste derived from palm oil, namely oil palm empty fruit bunches (OPEFB). oil palm empty fruit bunches can be useful as organic fertilizer because it can improve soil physical, chemical and biological properties. The use of OPEFB as organic fertilizer will also reduce excessive use of NPK. Utilization of OPEFB into organic fertilizer can be in the form of compost or raw OPEFB organic matter plus cellulolytic and lignolytic microbes. This study aims to determine the effect of NPK fertilizer and OPEFB compost on the growth of cocoa seedlings. This research was conducted experimentally using a completely randomized design consisting of nine treatments and three replications. Parameters of observation were plant height, stem diameter, number of leaves, root canopy ratio, dry weight of seedlings and age of planting. The results showed that the provision of 100 g polybag -1 OPEFB compost plus 50% NPK fertilizer (2 g polybag -1 ) could provide good growth in cocoa seeds ( Theobroma cacao L.).
Highlights
Tanaman kakao (Theobroma cacao L.) merupakan salah satu tanaman perkebunan yang memiliki peranan penting bagi perekonomian nasional, khususnya sebagai penyedia lapangan kerja, sumber pendapatan dan devisa Negara
This study aims to determine the effect of NPK fertilizer and oil palm empty fruit bunches (OPEFB) compost on the growth of cocoa seedlings
The results showed that the provision of 100 g polybag-1 OPEFB compost plus 50% NPK fertilizer (2 g polybag-1) could provide good growth in cocoa seeds (Theobroma cacao L.)
Summary
Perkebunan Indonesia (2018), luas areal perkebunan kakao yang ada di Indonesia pada tahun 2017 adalah. Usaha yang dilakukan untuk memenuhi kebutuhan kakao yang besar adalah dengan memperhatikan aspek budidaya tanaman kakao yang berawal dari pembibitan. Dalam pembibitan kakao pada skala besar yang menjadi kendala adalah keterbatasan tanah subur sebagai media tanam bibit. Upaya yang dapat dilakukan yaitu dengan pengelolaan yang memperhatikan kendala yang ada pada media tanam yang tidak subur, salah satunya melalui pemupukan (Yulianti, 2007). Salah satu limbah pertanian yang bisa dimanfaatkan sebagai pupuk organik adalah dengan memanfaatkan limbah perkebunan kelapa sawit yaitu tandan kosong kelapa sawit (TKKS) menjadi kompos. %. Tahapan ini dapat dipercepat dengan cara mengoptimalkan pertumbuhan dekomposer yang berada di TKKS tersebut, seperti bakteri selulolitik dan lignolitik. Dari uraian tersebut perlu dilakukan penelitian mengenai “Pengaruh Pemberian Pupuk NPK dan Kompos Tandan Kosong Kelapa Sawit terhadap Pertumbuhan Bibit Kakao (Theobroma cacao L.)”
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