Penyakit mati pucuk pada bibit jabo

Penyakit mati pucuk pada bibit jabon (Anthocephalus cadamba) oleh cendawan Botryodiplodia theobromae menyebabkan terhambatnya regenerasi tanaman ini. Usaha pengendalian yang banyak dilakukan saat ini yaitu dengan menggunakan fungisida sintetis. Tetapi penggunaanya menimbulkan masalah dengan meninggalkan residu bagi lingkungan dan menyebabkan resistensi patogen. Kitosan merupakan senyawa alami yang potensial sebagai alternatif untuk mengendalikan serangan penyakit pada tanaman. Senyawa ini memiliki sifat biologi dan mekanik yang tinggi diantaranya biorenewable, biodegradable, dan biofungsional sehingga aman untuk lingkingan. Penelitian ini bertujuan untuk menguji efektifitas kitosan dalam mengendalikan B. theobromae penyebab mati pucuk pada bibit jabon dan menguji pengaruh viskositas kitosan dalam mengendalikan mati pucuk pada bibit jabon.
Penelitian ini menggunakan kitosan dari cangkang udang yang di larutkan dengan asam asetat 1.5% dan lakukan uji viskositas menggunakan Viskometer Brookfielt. Uji efektifitas larutan kitosan dalam mengendalikan mati pucuk pada bibit jabon dilakun secara in-vivo. Rancangan penelitian yang digunakan yaitu rancangan dua faktor dalam rancangan acak lengkap (Faktorial RAL) dengan faktor waktu penyemprotan dan konsentrasi larutan kitosan. Waktu penyemprotan larutan kitosan dilakukan satu hari sebelum inokulasi dan satu hari setelah inokulasi sedangkan konsentrasi larutan kitosan yang digunakan yaitu 0.0 %, 0.1 %, 0.3 %, 0.5 %, 0.8 %, dan 1.0 %.
Hasil penelitian menunjukkan bahwa larutan kitosan dapat mengurangi tingkat keparahan penyakit pada bibit jabon yang diduga karena larutan kitosan memiliki gugus amin bermuatan positif yang dapat berikatan dengan bahan dinding sel yang bermuatan negatif sehingga terjadi kebocoran pada sel patogen. Berbeda pada parameter tingkat kejadian penyakit yang diamati, larutan kitosan tidak memberikan pengaruh nyata karena Botryodiplodia theobromae mampu menimbulkan gejala mati pucuk pada seluruh bibit jabon. Konsentrasi dan waktu penyemprotan larutan kitosan berpengaruh nyata terhadap tingkat keparahan penyakit (P

Results (English) 1:

The disease die shoots in seedlings (Anthocephalus cadamba) jabon by Botryodiplodia theobromae cause Boletus terhambatnya plant regeneration. The many control efforts undertaken currently by using synthetic fungicides. But their use poses a problem with leaving the residue to the environment and cause resistance to pathogens. Chitosan is a natural compound that potential as an alternative to control the attack of diseases in plants. These compounds have a biological and mechanical properties high biorenewable, including biodegradable, and biofungsional so it is safe for lingkingan. This research aims to test the effectiveness of chitosan in controlling b. theobromae cause of dead shoots in seedlings jabon and test the influence of viscosity Chitosan in control of dead shoots in seedlings jabon. The research of using Chitosan from shrimp shell with acetic acid dissolve in 1.5% and do test the viscosity using Viskometer Brookfielt. Test the effectiveness of solution of chitosan in control of dead shoots in seedlings jabon dilakun in in-vivo. Research design used, namely the design of two factors in a complete random design (Factorial RAL) with the time factor and concentration of Chitosan solution spraying. The time of the spraying solution of Chitosan was done one day before and one day after inoculation inoculation while the concentration of a solution of Chitosan used i.e. 0.0%, 0.1%, 0.3%, 0.3%, 0.5% and 1.0%. The results showed that Chitosan solution can reduce the severity of disease in seedling jabon allegedly because a solution of chitosan has a positively charged cluster amin which can bind with negatively charged cell wall so that the leaks on the pathogens of cells. Different parameters on the incidence rate of the disease are observed, a solution of Chitosan does not provide real influence because Botryodiplodia theobromae is able to cause the symptoms of dead shoots on the whole seedling jabon. Concentration and the time of the spraying solution of Chitosan real effect against the severity of the disease (P < 0.05), but the two are not mutually interact. The most effective treatment that is the giving of a solution of Chitosan with concentrations of 0.1% prior to inoculation with the severity of the disease by 25%. Solution viscosity Chitosan also give influence on the disease attacks die percent tip on seedling jabon. The higher the viscosity solution of Chitosan then percent of storms is increasing. The best viscosity reduce progression of the disease die shoots seeds jabon i.e. 8.80 percent with attacks of 7.90%.

Results (English) 2:

Dieback disease in Jabon seeds (Anthocephalus cadamba) by the fungus Botryodiplodia theobromae impede the regeneration of this plant. Control efforts that many do today is by using synthetic fungicides. But its use caused problems by leaving the residue on the environment and lead to pathogen resistance. Chitosan is a natural compound that is potentially as an alternative for controlling diseases in plants. These compounds have the biological properties and high mechanical including biorenewable, biodegradable, and so it is safe to lingkingan biofungsional. This study aims to test the effectiveness of chitosan in controlling B. theobromae cause dieback on Jabon seeds and test the effect of chitosan in controlling the viscosity of dieback on Jabon seeds.
This study uses chitosan from shrimp shells were dissolved in 1.5% acetic acid and test the viscosity using a viscometer Brookfielt. Test the effectiveness of chitosan solution in controlling dieback on dilakun Jabon seeds, in-vivo. The study design used is the design of two factors in a completely randomized design (factorial RAL) by a factor of spraying time and the concentration of chitosan solution. Time spraying a solution of chitosan made one day before the inoculation and one day after the inoculation while the concentration of chitosan used are 0.0%, 0.1%, 0.3%, 0.5%, 0.8% and 1.0%.
The results show that the solution of chitosan can reduce the severity disease in jabon seeds suspected because chitosan solution has a positively charged amine groups which can bind to the cell wall material which is negatively charged, causing leakage of the cell pathogens. Different parameters were observed incidence rate of the disease, the chitosan solution does not give real effect because Botryodiplodia theobromae capable of causing symptoms of dieback on all Jabon seeds. The concentration of chitosan solution and the spraying time significantly affect disease severity (P <0.05), but the two do not interact. The most effective treatment is administration of chitosan solution with a concentration of 0.1% prior to inoculation with the severity of the disease by 25%. Chitosan solution viscosity to be responsible percent dieback disease in Jabon seeds. The higher the viscosity of the solution of chitosan increased the percent of attacks. Viscosity best in suppressing the development of disease dieback Jabon seeds is 8.80 to 7.90% percent of attacks.