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All Journal Jurnal Sains Teh dan Kina Creative Research Journal
Erdiansyah Rezamela, Erdiansyah
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The influence of El-Nino on microclimate change and soil water content in Gambung tea plantation Rezamela, Erdiansyah; Dalimoenthe, Salwa Lubnan
Jurnal Penelitian Teh dan Kina Vol 19, No 1 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.227 KB) | DOI: 10.22302/pptk.jur.jptk.v19i1.63

Abstract

The very strong intensity of 2015 El-Nino affected on microclimate change and soil water content of Gambung Tea Plantation. The observation results indicated that in the year of 2015 Gambung was experienced four dry months (with rainfall <60 mm), with maximum air temperature 30,8ºC and air humidity dropped to 65%. These condition were not suitable for tea plant to grow well, which normally required two dry months at minimum (rainfall < 60 mm), air temperature of 18–25ºC, and with relative humidity of above 70%. The affected areas by drought were present in a map (see Figure 3 of the text). About 65% of the total blocks (north section about 80% and south section about 50%) of Gambung tea plantation were affected by drought. The worst affected were blocks A6 (north section) and B8 (south section). In these blocks, about 54.70% of plant were in normal growth condition; 14.65% were in temporary and permanent wilting status; 25.34% in the state of dropping their leaves; 5.19% of the plants with dried buds twigs, and 0.12% with dried twigs and dried old branches. The soil water content (at 10 cm depth) in these blocks dropped to 7.02% and 4.99% from normally required at minimum 30%.
The effect of drought period on attack intensity of Empoasca sp and blister blight in Gambung tea plantation Rezamela, Erdiansyah; Fauziah, Fani; Dalimoenthe, Salwa Lubnan
Jurnal Penelitian Teh dan Kina Vol 19, No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.812 KB) | DOI: 10.22302/pptk.jur.jptk.v19i2.111

Abstract

El-Nino had a significant impact on micro climate change including in rainfall, temperature and air humidity in Gambung Tea Plantation. In the dry season 2015, Gambung experienced four dry months that affect attack intensity of Empoasca and disease intensity of Blister Blight. This study aimed to determine the relationship between micro climate parameters and attack intensity of Empoasca and disease intensity of Blister Bright. Micro climate observation data were taken from Davis Automatic Weather Station (AWS) including rainfall intensity (mm), relative humidity (%) and maxium air temperature (0C). Attack intensity of Empoasca sp and Blister Bligh were observed by counting the number of healthy P+3 shoots as well as infected shoot from 200-500 gram of wet shoot sample randomly taken from container net at the plucking time. The results showed that the intensity of Empoasca decreased from 16.49% to 12.90% in the dry months from July to October 2015. The disease intensity of Blister Blight only occurred in July. There was a polynomial relationship among rainfall, temperature and humidity to the attack intensity of Empoasca with R2 values of 0.71, 0.77, 0.87, respectively the decrease of attack intensity occurred at ranfall intensity >140 mm, temperature >28°C and humidity >80%. Meanwhile linear relationship occurred among rainfall, temperature and humidity to the disease intensity of Blister Blight with R2 values of 0,98; 0,64; and 0,77, respectively the increasing of rainfall and humidity caused the increasing of disease intensity of Blister Blight. However disease intensity of Blister Blight decreased with increase in ambient temperature.
PENGARUH APLIKASI PUPUK DAUN MINERAL DAN ORGANIK CAIR TERHADAP PENINGKATAN PERTUMBUHAN BENIH TEH SIAP SALUR Wulansari, Restu; Rachmiati, Yati; Rezamela, Erdiansyah
Creative Research Journal Vol 2, No 02 (2016)
Publisher : Badan Penelitian dan Pengembangan Daerah (BP2D) Provinsi Jawa Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1253.5 KB)

Abstract

Persemaian teh merupakan tahapan penting untuk mendapatkan benih teh berkualitas. Permasalahan yang pada penyediaan benih berkualitas adalah persentase benih siap salur rendah. Penelitian ini bertujuan untuk meningkatkan persentase benih siap salur melalui pemberian pupuk mineral dan pupuk organik di persemaian teh. Penelitian dilaksanakan di Persemaian Pusat Penelitian Teh dan Kina, Bandung, Jawa Barat Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok, dengan empat perlakuan dan enam ulangan. Benih yang digunakan adalah klon GMB 7 berumur bibit 8,5 bulan. Perlakuan terdiri dari: pupuk mineral berupa larutan urea 2%, serta 2,5 mL/L, 5 mL/L dan 7,5 mL/L pupuk organik. Hasil penelitian menunjukkan bahwa pertumbuhan bibit teh yang diberi pupuk mineral dengan nyata lebih cepat dibandingkan dengan pupuk organik. Persentase bibit siap salur berumur 13,5 bulan tinggi pada pembibitan dengan pupuk mineral urea, yaitu 53,26%. Penelitian ini menjelaskan bahwa penggunaan larutan urea di persemaian teh memberikan pertumbuhan benih siap salur lebih cepat.
Co-Authors Fani Fauziah, Fani Restu Wulansari, Restu Salwa Lubnan Dalimoenthe, Salwa Lubnan Yati Rachmiati, Yati