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M. Subandi
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Pengaruh perbedaan ukuran polen pada penyerbukan buatan terhadap potensi jumlah buah pada tanaman kelapa sawit (Elaeis guinensis Jacq.) Enceng Sobari; Ahmad Akmal Hasibuan; M. Subandi
Kultivasi Vol 18, No 1 (2019)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.875 KB) | DOI: 10.24198/kultivasi.v18i1.19611

Abstract

Sari. Pembentukan buah tanaman kelapa sawit yang menurun berimbas pada produksi tandan buah segar. Hal ini diakibatkan oleh penyerbukan secara alami yang kurang efektif. Tujuan penelitian ini adalah mengetahui pengaruh perbedaan ukuran serbuk sari terhadap potensi jumlah buah dalam satu tandan, persentase keberhasilan pembentukan buah, dan bentuk buah kelapa sawit dengan cara penyerbukan buatan. Metode yang digunakan merupakan metode eksperimen dengan rancangan percobaan berupa Rancangan Acak Lengkap, yang terdiri dari 2 perlakuan ukuran serbuk sari dan 3 ulangan. Perlakuan terdiri dari ukuran serbuk sari 10 mesh dan 12 mesh. Pengujian lanjut dilakukan dengan Uji Jarak Berganda Duncan. Hasil penelitian menunjukkan bahwa aplikasi ukuran serbuk sari tidak berpengaruh nyata terhadap jumlah buah terbentuk dalam satu tandan, tetapi persentase keberhasilan pembentukan buah >80%, dan bentuk buah yang dihasilkan rata-rata buah normal. Ukuran serbuk sari dari saringan 10 dan 12 mesh secara deskriptif lebih kecil serta seragam dibandingkan saringan 2 – 8 mesh.Kata kunci: Kelapa Sawit, Potensi Hasil, Polen, Buah.Abstract. Decline of oil palm fruit sets impacts on the production of fresh fruit bunches (FFB). This is caused by less effective natural pollination. Objective of this research was to determine the effect of pollen size differences by artificial pollination to the potency of number of fruits per bunch, percentage of success fruit sets, and shapes of oil palm fruits. The method used experimental method. Experimental design was Completely Randomized Design (CRD), which consisted of 2 pollen size treatments and 3 replications. The treatment consisted of pollen size of 10 mesh and 12 mesh, then tested by Duncan's Multiple Range Test. The results showed that the application of pollen size did not significantly affect the number of fruits per bunch, but the percentage of success fruit sets was> 80%, and the shape of fruit was normal.  Pollen size from sieves 10 and 12 mesh descriptively homogen and smaller than pollen size from sieves 2 – 8 mesh. Keywords: Palm Oil, Potential Results, Pollen, Fruit.
PENGARUH BERBAGAI NILAI EC (ELECTRICAL CONDUCTIVITY) TERHADAP PERTUMBUHAN DAN HASIL BAYAM (AMARANTHUS SP.) PADA HIDROPONIK SISTEM RAKIT APUNG (FLOATING HYDROPONICS SYSTEM) M. Subandi; Nella Purnama Salam; Budy Frasetya
JURNAL ISTEK Vol 9, No 2 (2015): ISTEK
Publisher : JURNAL ISTEK

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Abstract

Availability of land is one of the factors that can distract in farming, mostly on the horticultural plants like spinach vegetable. Spinach vegetable contained vitamin and mineral that needed by human. Hydroponic systems are technically can be used as a means of cultivating with such limitations. Hydroponics system with floating raft is able to provide nutrient elements required by plants, because roots can absorb nutrient elements anytime and positions the sub merged direct root nutrient solution. The purpose of this study was to determine the influence of various EC value (Electrical Conductivity) of the optimal fertilizer AB Mix towards growth of spinach (Amaranthus sp.). This research is held at Ciparanje, Jatinangor, Sumedang on May till June 2014. This research uses the random arrangement of a non-factorial group which have the values of EC (e1 = 1,5 mS cm-1 ; e2 = 1,8 mS cm-1 ; e3 = 2,1 mS cm-1 ; e4 = 2,4 mS cm-1 ; e5 = 2,7 mS cm-1 ; and e6 = 3,0 mS cm-1) with 4 replicates. Research results showed the level of e6 is capable of giving the best results against the height parameter, the vast index plant leaves, fresh weight, and dry weight. While on root length parameter, harvest index, and the shoot root ratio root does not significant different results for real. This is caused by nutrient solution pH which was not inaccordance with the needs of the crop of spinach with hydroponic systems. Hydroponic system on the recommended nutrient solution pH 5-6, nutrient solution pH while in the land ranged from 6-10. It became a bench mark growth of plants that were not optimal. Keywords : EC (Electrical Conductivity), Floating Hydroponics System, Spinach
Co-Authors Ahmad Akmal Hasibuan Budy Frasetya Taufik Qurrohman Enceng Sobari, Enceng Nella Purnama Salam