Electronic Theses and Dissertation

Pertumbuhan dan hasil tanaman tomat pada budidaya hidroponik substrat dipengaruhi oleh jenis ‎media tanam yang tepat. Disamping ‎pemilihan media tanam yang tepat, pemangkasan berperan penting dalam meningkatkan hasil ‎tanaman tomat. Penelitian ini bertujuan untuk mendapatkan kombinasi media tanam dan waktu ‎pemangkasan yang tepat serta interaksi antara kedua faktor tersebut terhadap pertumbuhan dan ‎hasil tanaman tomat secara hidroponik substrat. Penelitian ini dilaksanakan di lahan percobaan ‎Rumah Kaca Fakultas Pertanian, Universitas Syiah Kuala. Penelitian ini berlangsung pada ‎Januari hingga Juli 2022. Rancangan penelitian yang digunakan yaitu Rancangan Acak ‎Kelompok, faktor pertama kombinasi media tanam terdiri dari 3 taraf: arang sekam, arang ‎sekam + ampas kopi (1 : 1), dan arang sekam + ampas kopi (1 : 2), sedangkan faktor kedua ‎waktu pemangkasan terdiri dari 3 taraf: 4, 5, dan 6 MST. Parameter yang diamati ‎adalah tinggi tanaman, jumlah daun umur 15, 25, 35, 45, 55, 65, dan 75 HST, panjang akar, ‎jumlah buah, bobot buah per buah, bobot buah per tanaman dan bobot basah berangkasan ‎tanaman. Hasil penelitian menunjukkan bahwa perlakuan kombinasi media tanam berpengaruh ‎sangat nyata terhadap tinggi tanaman dan jumlah daun pada umur 15, 25, 35, 45, 55, 65, dan 75 ‎HST, panjang akar, bobot buah per tanaman dan bobot basah berangkasan tanaman serta ‎berpengaruh nyata terhadap jumlah buah dan bobot buah per buah. Pertumbuhan dan hasil ‎tanaman tomat terbaik dijumpai pada perlakuan media tanam arang sekam. Perlakuan waktu ‎pemangkasan berpengaruh sangat nyata terhadap tinggi tanaman pada umur 55 dan 65 HST dan ‎jumlah daun pada umur 35, 45, 55, 65 dan 75 HST, namun berpengaruh nyata terhadap tinggi ‎tanaman pada umur 75 HST. Pertumbuhan dan hasil tanaman tomat terbaik dijumpai pada ‎perlakuan waktu pemangkasan umur 5 MST. Hasil penelitian menunjukkan bahwa interaksi ‎antara perlakuan kombinasi media tanam dengan waktu pemangkasan berpengaruh sangat nyata ‎terhadap tinggi tanaman pada umur 65 HST, namun berpengaruh nyata terhadap tinggi tanaman ‎pada umur 75 HST dan jumlah daun pada umur 45 dan 55 HST. Pertumbuhan dan hasil ‎tanaman tomat terbaik dijumpai pada kombinasi perlakuan media tanam arang sekam pada ‎waktu pemangkasan umur 5 MST. ‎
Kata Kunci : Ampas kopi; Arang sekam; Kualitas; Pucuk

The growth and yield of tomato plants in hydroponic substrate cultivation is influenced by the right type of growing media. In addition to choosing the right planting media, pruning plays an important role in increasing the yield of tomato plants. This study aims to obtain the right combination of planting media and pruning time as well as the interaction between these two factors on the growth and yield of tomato plants using hydroponic substrates. This research was conducted in the experimental field Greenhouse Faculty of Agriculture, Syiah Kuala University. This research took place from January to July 2022. The research design used was Randomized Group Design, the first factor being a combination of planting media consisting of 3 levels: husk charcoal, husk charcoal + coffee grounds (1 : 1), and husk charcoal + coffee grounds (1 : 2), while the second factor pruning time consisted of 3 levels: 4, 5 and 6 WAP. Parameters observed were plant height, number of leaves aged 15, 25, 35, 45, 55, 65, and 75 DAP, root length, number of fruits, fruit weight per fruit, fruit weight per plant and dry weight of plant. The results showed that the combination treatment of planting media had a very significant effect on plant height and number of leaves at the age of 15, 25, 35, 45, 55, 65, and 75 DAP, root length, fruit weight per plant and dry weight of the plant. had a significant effect on the number of fruits and fruit weight per fruit. The best growth and yield of tomato plants was found in the treatment of husk charcoal growing media. Treatment time of pruning had a very significant effect on plant height at 55 and 65 DAP and number of leaves at 35, 45, 55, 65 and 75 DAP, but significantly affected plant height at 75 DAP. The best growth and yield of tomato plants was found at treatment at the age of 5 WAP pruning. The results showed that the interaction between the combination of planting media and pruning time had a very significant effect on plant height at 65 DAP, but significantly affected plant height at 75 DAP and leaf number at 45 and 55 DAP. The best growth and yield of tomato plants was found in the combination treatment of husk charcoal growing media at the pruning time of 5 WAP. Key Word : Coffee grounds; Husk charcoal; Quality; Shoots