Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Respon Pertumbuhan Tanaman Aren (Arenga Pinnata Merr.) Dengan Pemberian Pupuk Organik Dan Pupuk Anorganik Berbeda Dosis (Response Of Sugarpalm (Arenga Pinnata Merr.) Growth By Different Dosage Treatment Of Organic And Anorganic Fertilizer)

Tanaman aren (Arenga pinnata Merr.) adalah salah satu tanaman perkebunan yang bernilai ekonomis tinggi dan potensial untuk terus dikembangkan. Salah satu upaya untuk meningkatkan produktivitas aren di Indonesia adalah dengan pemupukan. Pupuk anorganik yang lazim diaplikasikan pada tanaman aren memiliki kecenderungan untuk merusak kualitas tanah. Karena itu, perlu dilakukan usaha untuk mengembalikan kesehatan tanah dengan cara mengimbangi pemberian pupuk anorganik dengan pupuk organik. Penelitian ini dilakukan di kebun percobaan Ciparanje, Fakultas Pertanian Universitas Padjadjaran, Kecamatan Jatinangor Kabupaten Sumedang, Jawa Barat pada Oktober 2016 – Desember 2016. Penelitian menggunakan rancangan acak kelompok terdiri dari enam kombinasi perlakuan dan diulang sebanyak empat kali. Perlakuan meliputi tanpa pupuk, pupuk organik 100%, pupuk anorganik 100%, 25% pupuk organik + 75% pupuk anorganik, 50% pupuk organik + 50% pupuk anorganik, dan 75% pupuk organik + 25% pupuk anorganik. Hasil penelitian menunjukkan bahwa penambahan 25% – 50% pupuk organik yang dikombinasikan dengan 50%-75% pupuk anorganik berpengaruh baik terhadap pertumbuhan aren TBM terutama pada parameter rata-rata pertambahan tinggi tanaman, rata-rata pertambahan lilit batang dan jumlah daun.

Sugar palm(Arenga pinnata Merr.) is one of plantation crops that has high economic value and is potential to be developed. One effort to increase the productivity of palm in Indonesia is by fertilizing. Common inorganic fertilizers applied to the sugar plant has a tendency to damage the quality of the soil. Therefore, it is necessary to attempt to restore the health of the soil by way counterbalance inorganic fertilizer with organic fertilizer. This research was conducted at the experimental field Ciparanje, Faculty of Agriculture, University of Padjadjaran, Jatinangor, Sumedang regency, West Java, in October 2016. The research design model was the form of a randomized block design (RBD), consisting of six combination treatments and repeated four times. Each experimental unit consisted of one plant so that the total plant consists of 24 plants. The treatments given to the sugar palm were: I (without fertilizer); II (organic fertilizer 100%) (9 kg / seedling/ year); III (inorganic fertilizer 100%); IV 25% + 75% organic fertilizer inorganic fertilizer; V (50% + 50% organic fertilizer inorganic fertilizers); and VI (75% + 25% organic fertilizer inorganic fertilizer). Furthermore, it was conducted an analysis of variance by F test level of 5%. Least Significance Difference (LSD) test at level of 5% would be conducted if there were differences among the treatments. The results showed that the addition of 25 % to 50 % organic fertilizer combined with 50 % -75 % inorganic fertilizer influential good on the growth immature plant of sugar palm especially on the the average increase plant height , the average increase stem girth and the average the growing leaf number parameters.