Pencucian dan Serapan Hara Lada Perdu (Piper Nigrum L.) pada Berbagai Tingkat dan Frekuensi Pemberian Air

Tujuan penelitian ini untuk mengetahui pengaruh pemberian harapada berbagai tingkat dan frekuensi pemberian air terhadap pertumbuhandan produksi lada perdu. Penelitian dilakukan di rumah atap InstalasiPenelitian Cimanggu, Balai Penelitian Tanaman Rempah dan Obat, tahun1996-1998. Penelitian dilakukan dengan menggunakan pot drum 40 liter.Penelitian menggunakan rancangan acak kelompok berukuran 6tanaman/petak yang diulang 3 kali. Terdapat 2 faktor yang diuji yaitukombinasi dari tingkat dan frekuensi pemberian air dan faktor keduaadalah takaran hara NPK Mg 12-12-17-2. Hasil penelitian menunjukkanbahwa pemberian air 21 mm/2 hari, setara dengan curah hujan 3.780 mmper tahun dengan pemberian pupuk 400 g NPKMg 12-12-17-2 pertanaman per tahun menghasilkan pertumbuhan terbaik dan produksitertinggi yaitu 42,7 g/tanaman pada produksi tahun pertama dan 171,2g/tanaman pada tahun produksi kedua. Ini berarti dengan jarak tanam1,25 x 1,25 m telah mampu dicapai hasil lebih dari 1,09 ton/ha. Tingkatpencucian hara makro tertinggi terjadi pada perlakuan pemberian air 21mm/2hari dengan agihan pemupukan 600g/tanaman/tahun

Pengaruh Unsur-unsur Iklim Terhadap Fluktuasi Hasil Cengkeh

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Pengaruh Pemangkasan Tanaman Lada dan Tajarnya terhadap Hasil

The effect of living post and pepper vines primings on the pepper yieldTo obtain good yield of pepper, farmers fequently apply various treatments to their crops, including pruning of the pepper vines and or their living post. Studies on the aspects of the pruning ae however very limited. Therefore a ield experiment was conducted to investigate the effects of pruning of pepper vines and their living post on the pepper yield. The experiment was carried out at Sukamulya Research Station, Sukabumi. A split plot design with three rcplicaties was used. The main plot was the pruning of living post, and the sub plot was the pruning of pepper vines Plot size was 20 plants per plol wilh spacing of 2.5 m x 2.5 m Results showed that there was signiicant interaction between the pruning of living post and pepper vines. The pruning of living post may be carried out either 3 times (October, January and April) or twice (October and January) a year. However. If the pruning of the living post is carried out 3 times per year, Ihe vine would be pruned once a year or not at all. On the other hand, if the pruning of living post is carried out twice a year, the pepper vines would be pruned 6 times a year

Pengaruh Cekaman Air Terhadap Pertumbuhan Dan Produksi Pada Tanaman Jambu Mente

Effects of water stress on plant growth and production of cashewTo complete the characteristic tests of prospective numbers of cashew (Anacardium occidentale L). research on the production stability and envi¬ ronmental stress tolerance were conducted. The objectives of the research were to study the effects of the water stress on the growth performance, inflorescent formation, production and quality of cashew. The research activi¬ ties wee caried out at Cimanggu Research Insulation from Apil 1995 to March 1998. The research used factorial randomized block design with 3 replications and 4 plants per pot. The treatments tested were wateing intervals (A) of 2, 4. 8. and 12 days with 9 mm deep of water for each treatments Prospective numbers of cashew (N) namely Pecangakan. Jepara F2-10. Balak¬ risnan B-02. and Silanka S-21. The results obtained 13 months ater gratings or 11 months ater the application showed that water stress and prospective numbers significantly affected the vegetative growth of the plants namely plant height, primary branch number, secondary branch numbers and canopy diameter. Amongst the prospective numbers, Balakrisnan B-02 had lower growth rate compared with Pecangakan. Jepara F2-I0, and Silanka S-21. Water stress significantly affected the formation of inflorescence, which tended to decrease along with the increase of water stress. On the same level of water stress, the inflorenscent formation of Jepara F2-10 was more domi¬ nant than the other numbers. However the proportion of male flowers, hermaprodite, and the ratio ofhermaprodite flowers to total number of flowers wee not significantly affected by water stress. The difference of inflorescent formation of prospective numbers was significant on the formation of the male flowers only, the highest was Srilanka S-21 and the lowest was Jepara F2- 10. The water stress showed significant effect on the number of the pods per tree, production and the protein content of the cashew nuts. The number of pods per tree and the production tended to decrease along with the increase of water stress, while the protein content of the cashew nut tend to increase along with the water stress incease The number of pods and production per tree were highest on Balakisnan B-02 followed by Pecangakan. Jepara F2-10 and Silanka S-21. espectively, where as the highest protein content of Ihe cashew kernel was on Balakrisnan B-02

Status Air Tanaman Sengon (Alibizia Falcataria (L.) Fosberg) pada Berbagai Kondisi Tempat Tumbuh

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