The research objective was to study the agronomic and physiological characteristics of red chilli (Capsicum annuumL.) varieties under waterlogging stress. These studies were conducted at two locations: in Palembang, South Sumatra, from February to August 2010 and in Bogor in West Java, from September to November 2010. Experiments in Palembang was using split plot design with three replications. The main plot was waterlogging treatment for 1, 2, 3 and 4 days. The subplot was red chilli varieties: Kiyo F1, Riawan, Ferosa, Bravo F1 and Laris. Experiments in Bogor was conducted without the use of experimental design; the same plant varieties were waterlogged for 2 and 4 days. The results showed that waterlogging caused root damages on all varieties. Kiyo F1 had better agronomic characters and high levels of tolerance than other varieties. The content of ethylene in all varieties increased with increasing time of waterlogging, except for Laris. In all varieties both leaf chlorophyll and tissue N content tend to decline with the increase in waterlogging duration. However Bravo F1 experienced an increase in the chlorophyll content whereas Kiyo F1 had an increase in N in the plant tissue. Keywords: agronomic character, physiological character, red chili, waterlogging
An integrated farming system is one of the alternatives for climatic change mitigation. This paper reports the application of corn-cattle based integrated farming system in Agrotechno Park Center of Palembang, and discusses its impact on CO 2 fixation and the reduction of methane emissions. The study was based on the data of the first 6 yr from 2003 until 2009. The CO 2 fixed in the soil and plants was determined based on the content of organic C which was multiplied by the index of 3.67. The methane gas produced by Balinese cattle and its dung was observed and modified into feed rations. The results showed that soil organic C increased from 40.80 tons C/ha in the 1 st yr to 66.40 tons C/ha in the 6 th yr. In addition, there was organic C fixation equivalent to 93.95 tons of CO 2 e. Corn biomass increased from 6.67 tons/ha to 18.66 tons/ha, equivalent to an increase in the fixation of atmospheric CO 2 e as much as 19.80 tons CO 2 e/ha. The supplementation of 60%-80% grass fodder with concentrate lowered the concentration of methane gas in cattle breathing by 28.7%, from 617 ppm to 440 ppm, while the methane emissions from cattle manure decreased by 31%, from 1367 mL/head/d to 943 mL/head/d. Installing a bio digester that generates biogas served to accommodate methane gas emissions from cattle dung and used it for bioenergy. Composting reduced the formation of methane gas from cattle manure through a regular process of turning over that gives aeration and forms aerobic condition in the heap of cattle dung. Recycling produces a variety of organic products that store carbon for a longer period of time and slowed the conversion of organic C into CO 2. This study showed that the diverse activities of an integrated crop-cattle farming could be an alternative solution to climatic change mitigation.
Kegiatan peternakan setidaknya menyumbangkan 24,1% dari dari total emisi yang berasal dari sektor pertanian. Emisi yang berasal dari peternakan bersumber dari aktivitas pencernaan dan pengelolaan kotoran berupa gas CH4 (metana) yang dampaknya 21 kali lebih berbahaya dibandingkan dengan CO2. Pemilihan jenis pakan akan sangat mempengaruhi sumbangan gas rumah kaca dari kegiatan peternakan. Pakan ternak ruminansia dapat berupa hijauan (rumput-rumputan) ataupun konsentrat/ ransum. Salah satu caramenurunkan produksi CH4 dalam kegiatan peternakan dengan meningkatkan daya cerna pakan yaitu menambah jumlah konsentrat dalam pakan. Penelitian ini bertujuan untuk menentukan komposisi pakan perbandingan rumput dan konsentrat untuk ternak sapi yang dapat mereduksi gas metana (CH4) dan menganalisis besaran konversi feses ternak sapi menjadi biogas dan metana pada paka tersebut. Penelitian ini dilakukan dengan rancangan Acak Kelompok (RAK) non faktorial dengan 5 perlakuan dan 5 ulangan, perlakuan pakan yang di berikan yaitu A (100 % pakan hijuan), B (80% rumput + 20% Ransum), C (60% rumput + 40% Ransum), D (40% rumput+60% ransum), dan E (20% rumput +80% hijuan). Peubah yang diamati adalah konsentrasi metana dari pernafasan, volume biogas, konsentrasi metana dari biogas. Hasil penelitian menunjukkan pemberian pakan ternak sapi dengan komposisi 80% konsentrat dan 20% hijauan (perlakuan E), akan dihasilkan gas metana dari pencernaan paling rendah, dengan pakan tersebut feses ternak akan dihasilkan volume biogas yang paling banyak. Biogas paling sedikit terdapat pada pelakuan 40% konsentrat+60% hijaun (perlakuan D). Feses ternak dengan pakan hijauan (Perlakuan A) saja akan menghasilkan gas metan paling banyak.Kata kunci : Komposisi pakan, konsentrat, metana (CH4), reduksi
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.