<p>ABSTRAK<br />Tujuan penelitian ini untuk mengetahui pengaruh pemberian hara<br />pada berbagai tingkat dan frekuensi pemberian air terhadap pertumbuhan<br />dan produksi lada perdu. Penelitian dilakukan di rumah atap Instalasi<br />Penelitian Cimanggu, Balai Penelitian Tanaman Rempah dan Obat, tahun<br />1996-1998. Penelitian dilakukan dengan menggunakan pot drum 40 liter.<br />Penelitian menggunakan rancangan acak kelompok berukuran 6<br />tanaman/petak yang diulang 3 kali. Terdapat 2 faktor yang diuji yaitu<br />kombinasi dari tingkat dan frekuensi pemberian air dan faktor kedua<br />adalah takaran hara NPK Mg 12-12-17-2. Hasil penelitian menunjukkan<br />bahwa pemberian air 21 mm/2 hari, setara dengan curah hujan 3.780 mm<br />per tahun dengan pemberian pupuk 400 g NPKMg 12-12-17-2 per<br />tanaman per tahun menghasilkan pertumbuhan terbaik dan produksi<br />tertinggi yaitu 42,7 g/tanaman pada produksi tahun pertama dan 171,2<br />g/tanaman pada tahun produksi kedua. Ini berarti dengan jarak tanam<br />1,25 x 1,25 m telah mampu dicapai hasil lebih dari 1,09 ton/ha. Tingkat<br />pencucian hara makro tertinggi terjadi pada perlakuan pemberian air 21<br />mm/2hari dengan agihan pemupukan 600g/tanaman/tahun.<br />Kata kunci : Lada perdu, Piper nigrum L., pemupukan, pemberian air,<br />produksi</p><p><br />ABSTRACT<br />Nutrient leaching and intake in bushy pepper (Piper<br />nigrum L.) at different rates and frequency of watering<br />The objective of the research was to find out the effect of<br />fertilizing at different rates and frequency of watering on the growth and<br />yield of bushy pepper. The research was done at a shading house of<br />Cimanggu Experimental Farm, Indonesian Spices and Medicinal Crops<br />Research Institute in 1996 – 1998. Bushy pepper was planted in a<br />container of 40 litre in Cimanggu Instalation. The research used a<br />randomized block design with 3 replication, 6 plants/ plot. There were<br />two factors studied in the research i.e. the combination of the rate and<br />frequency of watering, and the rate of NPK Mg 12-12-7-2. The results<br />showed that watering at 21 ml in 2 days, equals to 3780 mm rainfall, with<br />the application of 400 g NPK Mg 12-12-17-2 per plant gave the best<br />growth performance and the highest yield of pepper 42.7 g/vine at the 1 st<br />year and 171.2 g/vine at the 2 nd year. It means that at the plant spacing of<br />1.25 x 1.25 m the plants can produce 1.09 tones/ha. The highest nutrient<br />leached happened at the treatment of watering of 21 mm/2days with<br />fertilizer application 600 g/vine.<br />Key words: Bushy pepper, Piper nigrum L., fertilizing, watering,<br />growth, production</p>

Effect of Mutilation and Ablation to Molting of Mangrove Crab (Scylla serrata) as Soft Crab          Soft crabs that are more expensive than regular crab, that having hard carapace, in nature and in culture are very difficult to find. This study aimed to get the soft crabs more easily controlled the number  of molting in culture, by the method of mutilation and ablation. Thus the supply in market will be able to meet existing demand. Four treatment techniques had been implemented namely mutilation, ablation, ablation + mutilation, and controls which each performed four replications. Complete Randomized Desaign (CRD) was used because the experiment was conducted in a fairly homogeneous patch of tambak pond. Experimental unit in the form of bamboo pen cages with the size of 2x1x1m filled with 20 crabs.  All experimental crabs were ready for molting (dark color) even with 40-90 g of varied sizes. The results showed that each week until the third week, the average number of crabs per unit experiment with techniques of mutilation was always having highest of molting number, respectively 1.00, 3.25, and 11.00 crabs and having the lowest mortality rate, respectively  0. 25, 1.75, and 1.25 crabs, compared with the ablation, mutilations + ablation technique, and control. Statistically  four treatments in molting, in week two and  three was significantly different , eventhough in mortality was not (α = 5%).Keywords : mangrove crab (Scilla serrata), soft crabs, mutilation, ablation ABSTRAK                Kepiting lunak yang  harganya lebih mahal dari kepiting biasa bercangkang keras, di alam maupun dalam budidaya sangat susah ditemukan.  Penelitian ini bertujuan untuk mendapatkan kepiting lunak yang lebih mudah terkontrol jumlahnya dalam budidaya, dengan metoda mutilasi dan ablasi.  Dengan demikian dalam  pasar ketersediaannya akan dapat memenuhi permintaan yang ada. Empat perlakuan telah dilaksanakan yaitu teknik mutilasi, ablasi, mutilasi+ablasi, dan kontrol dengan masing-masing dilakukan empat kali ulangan. Rancangan Acak Lengkap (RAL) digunakan karena percobaan ini dilakukan di suatu petak tambak yang cukup homogen. Unit percobaan berupa keramba bambu tancap ukuran 2x1x1m yang diisi 20 kepiting yang semua kepiting dalam percobaan siap molting (warnanya gelap) meskipun dengan ukuran yang bervariatif 40-90 g. Hasil penelitian menunjukan bahwa tiap minggu sampai pada minggu ke tiga  rata-rata jumlah kepiting per unit percobaan dengan teknik mutilasi selalu tertinggi terjadinya proses molting yaitu masing–masing 1,00; 3,25; dan 11,00 ekor dan mortalitasnya terendah yaitu 0,25; 1,75; dan 1,25 ekor dibanding dengan teknik ablasi, mutilasi+ablasi; dan kontrol.  Secara statistik ke empat perlakuan dalam molting pada minggu ke dua dan ke tiga berbeda nyata hasil terbaik ditunjukkan oleh perlakuan mutilasi, meskipun dalam mortalitas tidak  berbeda nyata (selang kepercayaan 95 %).Kata Kunci : Kepiting bakau (Scilla serrata), kepiting lunak, mutilasi, ablasi.

Effectiveness of urea fertilizer on the color gradation and growth density of peking grass. The research was conducted for three months. The research was experiment was used with a compete random pattern (RBD) with six treatments and four replications, so that there were 24 experimental units on each land measuring 1m 2 . Urea fertilizer application namely P0 dose 0 g/m 2 , P1 dose 10 g/m 2 , P2 dose 20 g/m 2 , P3 dose 30 g/m 2 , P4 dose 40 g/m 2 and P5 dose 50 g/m 2 . Application of urea fertilizer start at the beginning of planting. Variables observated were color gradations and the rate of growth of peking grass plants. Observation of color gradations was measured using leaf color chart, three months after planting. Observation of density is carried out using a grid (measuring tool for growing density of grass), five times per fifteen days after planting in each experimental plot. Data were analyzed using anova Fan Test and Duncan Multiple Range Tes (DMRT). The results of observation healthy peking grass leaf color are based on color chart measurement tools, green in color with a score of 3. Giving urea fertilizer at a dose of 20 g/m 2 and 30 g/m 2 is very effective in producing green color. The results of observing the growth rate of peking grass every fifteen days the most effective of 27.92 %, in the second fifteen day observation with treatment of urea fetilizer at a dose of 20 g/m 2 .

<p><strong>The effect of living post and pepper vines primings on the pepper yield</strong></p><p>To 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.</p>