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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Ilmu Pertanian AGRIVITA, Journal of Agricultural Science Jurnal Sains Teh dan Kina Journal of Tropical Crop Science jurnal Ilmu Pertanian (Agricultural Science) Jurnal Teknik, Komputer, Agroteknologi dan Sains
Sofyan Zaman
Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Jalan Meranti, Kampus IPB Dramaga, Bogor 16680, Indonesia.
Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Journal : Journal of Tropical Crop Science

 1 
Cocoa Production Stability in Relation to Changing Rainfall and Temperature in East Java, Indonesia Edi Santosa; Ginanjar Pramudya Sakti; Muhamad Zainul Fattah; Sofyan Zaman; Ade Wahjar
Journal of Tropical Crop Science Vol. 5 No. 1 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (678.195 KB) | DOI: 10.29244/jtcs.5.1.6-17

Abstract

Climate change as indicated by rising temperature and changing rainfall pattern has been known to affect cacao production in many production countries. However, studies on the effects of rainfall and temperature variability on the cacao production are rarely reported in Indonesia. Hence, the objective of this study is to evaluate the stability of cocoa production in relation to rainfall and temperature variability in order to develop sustainable production under climate change scenario. Research was conducted at a state owned company in Jember District, East Java, Indonesia from February to June 2015. Production and climatic data of 2010-2015 were evaluated using simple regression and correlation analysis. Results revealed that productivity fluctuated among months and among years. However, the fluctuation among months (s2 = 117.076) was lower than among years (s2 = 311.225). Rainfall and temperature showed variability among months and among years; and the fluctuation among months was lower in both rainfall and temperature. Rainfall at one to four months before harvest correlated with production (r=0.400-0.671; P= 0.000 to 0.001) and temperature at two to four months before harvest determined cocoa production (r=0.371-0.412; P=0.001-0.003). High monthly cocoa production coincided with decreasing temperature and rainfall for 4 to 5 months during pod development. The presented study implies that both short and long term strategies should be implemented under climatic variability to sustain cocoa production. It is recommended to apply production technology to stabilize micro climate temperature and to minimize the impact of high rainfall such as shade plant and canopy manipulation.
Forage Potential of Plant Species Found in Various Ecosystems in Musi Banyuasin Regency, South Sumatera, Indonesia Putri Irene Kanny; M.A. Chozin; Edi Santosa; Dwi Guntoro; Sofyan Zaman; Suwarto Suwarto; Ani Kurniawati
Journal of Tropical Crop Science Vol. 9 No. 01 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.01.68-76

Abstract

Forage is an important component in sustainable smallholder livestock. The purpose of the study was to identify the diversity of natural plant species in various ecosystems, as well as their potential as forage. Based on our surveys of palm oil plantation, rubber plantation, and home gardens using the quadrant method, we identified approximately 50 species comprising the natural vegetation of our study area. Out of 50, we identified 39 broad-leaved species, 9 grasses (Poaceae) species, and 2 sedges (Cyperaceae) species. The palm oil plantation had 29 species dominated by Ottochloa nodosa (11.92%) and Asystasia gangetica (11.40%); 25 species were found in the rubber plantation dominated by Cynodon dactylon (28.42%) and Panicum repens (9.20%), and home gardens contained 30 species dominated by Eleusine indica (13.39%) and Ageratum conyzoides (9.60%). Among the 29 species found in the palm oil plantation, 13 were observed to have low palatability scores, and 16 species have high palatability scores. Based on their high palatability scores, the following species can be utilized as forage for Balinese cattle: Cyrtococcum acrescens, Eleusine indica, Centrosema pubescens, Paspalum conjugatum, and Sida rhombifolia.
Co-Authors Abdul Gani Gani Tarigan Abdurrahman Gabriel Ade Wachjar Ade Wahjar Adolf Pieter Lontoh AHMAD JUNAEDI Anas Dinurrohman Susila Ani Kurniawati Antonio C Situmorang Arief Hartono Aslina Putri Nunyai Budi Yadhika Sarjono Candra Budiman Dhika Prita Hapsari Diaguna, Ridwan Dulbari, Dulbari Dwi Guntoro Dwi Mei Setiawan Edi Santosa Eko Sulistyono Fani Fauziah Faqih Udin Farhan Abdillah Nafis Fredinan Yulianda Gatot Pramuhadi Ghulam Nurul Huda Ghulam Nurul Huda, Ghulam Nurul Ginanjar Pramudya Sakti Gultom, Sandry Hari Prasetyo Hari Prasetyo Herdhata Agusta Hutagalung, Musvi Indra Mario Stefano Intan Dewi Puspitasari Juang Gema Kartika Karyati M A Chozin M. A. Chozin M.A. Chozin Miftakhur Rizki Hidayat Febrianto Moh. Amri Arsyid Muhamad Zainul Fattah Muhammad Afif Farkhan Rony Nabila Syarfina Aryani Natalia Puteri Widiastuti Nufvitarini, Winda Nugraha, Parid Ridwan Nunyai, Aslina Putri Nurul Afiyah Panca Dewi Manu Hara Karti Parid Ridwan Nugraha Putri Irene Kanny Rahayu Novrina Rosa Rahayu, Christina Mey Ritonga, Arya Widura Rosa, Rahayu Novrina Sabaiq Yuhfadh Djiwangga Darin Sandry Gultom Sarjono, Budi Yadhika Simangunsong, Yosua Pratama Situmorang, Antonio C Sofiyah, Maratus Sudirman Yahya Sudirman Yahya Sudradjat Sudradjat Supijatno Suwarto Suwarto Syaiful Anwar Winarso Drajad Widodo Winda Nufvitarini Yonny Koesmaryono Yosua Pratama Simangunsong Yudiwanti Wahyu E. Kusumo