Electronic Theses and Dissertation

Abstrak: Pengaruh komposisi media tanam dan dosis pupuk NPK terhadap pertumbuhan bibit tanaman kakao dijadikan tujuan penelitian ini. Penelitian ini dilaksanakan di Kebun Percobaan dan Laboratorium Teknologi Benih Fakultas Pertanian Universitas Syiah Kuala, Darussalam, Banda Aceh pada bulan Februari s.d Mei 2021. Penelitian ini menggunakan Rancangan Acak Kelompok pola Faktorial dengan 2 faktor. Faktor yang diteliti yaitu komposisi media tanam yang terdiri dari 3 taraf (tanah, tanah:sekam:kompos 1:1:1, dan tanah,sekam,kompos 1:1:2) dan dosis pupuk NPK terdiri dari 4 taraf (0 gr/polybag , 10 gr/polybag, 20 gr/polybag dan 30 gr/polybag). Hasil penelitian menunjukkan bahwa perlakuan komposisi media tanam berpengaruh sangat nyata terhadap parameter pertambahan tinggi 30, 60 dan 90 HST, pertambahan diameter batang 30, 60 dan 90 HST, pertambahan jumlah daun 60 dan 90 HST, luas daun 90 HST, volume akar 90 HST, berat berangkasan basah umur 90 HST dan berat berangkasan kering umur 90 HST. Perlakuan terbaik dijumpai pada komposisi media tanam tanah:sekam:kompos (1:1:1). Perlakuan dosis pupuk NPK berpengaruh sangat nyata terhadap parameter pertambahan tinggi bibit 30, 60 dan 90 HST, pertambahan diameter batang umur 30 ,60 dan 90 HST, pertambahan jumlah daun 60 HST, volume akar 90 HST. Dosis terbaik dijumpai pada 10 gr/polybag. Terdapat interaksi sangat nyata antara perlakuan komposisi media tanam dengan dosis pupuk NPK pada parameter pertambahan tinggi bibit 90 HST dan pertambahan diameter batang 30 HST, serta interaksi nyata pada parameter pertambahan diameter batang 60 HST dan pertambahan jumlah daun 60 HST.
Kata kunci: Bibit Kakao, Komposisi media tanam, NPK

Abstrak. The objective of study was to determine the influence of the composition of the growing media and the dose of NPK fertilizer, as well as the interaction of the two on the growth of cocoa seedlings. This research was carried out at the Experimental Garden and Seed Technology Laboratory, Faculty of Agriculture, Syiah Kuala University, Darussalam, Banda Aceh from February to May 2021. This study used a Factorial Randomized Block Design with 2 factors. The factors studied were the composition of the planting media which consisted of 3 levels (soil, soil:husk charcoal:compost 1:1:1, and soil:husk charcoal:compost 1:1:2) and the dose of NPK fertilizer consisted of 4 levels (0 g/polybag,10 gr/polybag), 20gr/polybag and 30gr/polybag). The results showed that the composition of the planting media had a very significant effect on the parameters of height increase at 30, 60 and 90 DAP, increase in stem diameter at 30, 60 and 90 DAP, increase in the number of leaves at 60 DAP and 90 DAP, leaf area at 90 DAP, root volume at 90 DAP, wet root weight at 90 DAP and dry root at 90 DAP. The best treatment was found in the composition of the planting media of soil:husk charcoal:compost (1:1:1). The dose treatment of NPK fertilizer had a very significant effect on the parameters for increasing the height of seedlings at 30, 60 and 90 DAP, increasing in stem diameter at 30, 60 and 90 DAP, increasing the number of leaves at 60 DAP, and root volume at 90 DAP. The best dose is found at 10 gr/polybag. There was a very significant interaction between the treatment of the composition of the growing media and the dose of NPK fertilizer on the parameters for increasing the height of seedlings at 90 DAP and increasing in stem diameter at 30 DAP, as well as a significant interaction on the parameters for increasing stem diameter at 60 DAP and increasing the number of leaves at 60 DAP. Keywords : Cocoa Seeds, Composition of planting media, NPK