Pengaruh pergiliran tanaman terhadap dinamika populasi Globodera Rostochiensis

ALAM, Samsu, Prof.Dr.Ir. Mulyadi, M.Sc

2006 | Tesis | S2 Fitopatologi

Penelitian pengaruh pergiliran tanaman terhadap dinamika populasi Globodera rocstochiensis, bertujuan untuk mengetahui pengaruh berbagai seri pergiliran tanaman khususnya tanaman bukan inang (bawang daun dan kacang merah) terhadap perkembangan populasi G. rocstochiensis. Seri pergiliran tanaman yang digunakan yaitu: 1) bawang daun-kacang merahkentang; 2) kentang-kacang merah-kentang; 3) bawang daun-kentangkentang; dan 4) kentang-kentang-kentang. Penelitian ini dilaksanakan pada bulan Juni 2005-April 2006 di Desa Karang Tengah Kecamatan Batur Kabupaten Banjarnegara. Hasil penelitian menunjukkan peningkatan populasi sista pada masingmasing seri pergiliran tanaman. Dari empat seri pergiliran tanaman yang diuji, penanaman kentang secara terus menerus meningkatkan populasi sista nematoda sista kentang tertinggi dibandingkan tiga seri pergiliran tanaman yang lain sebesar 48,62%, sedangkan peningkatan populasi terendah terjadi pada seri pergiliran tanaman 1 yang pada musim tanam pertama dan kedua ditanami dengan tanaman bawang daun dan kacang merah (bukan tanaman inang) sebesar 15,96%. Peningkatan populasi tersebut dievaluasi berdasarkan populasi awal (sebelum musim tanam pertama) dengan populasi akhir (populasi setelah musim tanam ketiga). Peningkatan populasi pada seri pergiliran tanaman 1; 2; 3; dan 4 masing-masing sebesar 15,96%; 38,50%;25,84%; dan 48,62%, atau dengan kata lain terjadi penghambatan peningkatan populasi G. rostochiensis pada seri pergiliran tanaman 1; 2; 3; dan 4 sebesar 32,66%; 10,12%; 22,78%; dan 0 %.

The Study of the effect of crop rotation on the population development Globodera rostochiensis was to know the influence of crop rotation series, especially non hosts (welsh onion and france bean) on the population development of G. rostochiensis. Crop rotation series used were: 1) welsh onion-france bean-potato; 2) potato-france bean-potato; 3) welsh onionpotato- potato; and 4) potato-potato-potato. The research was conducted from June 2005 to April 2006 in Karang Tengah, Batur, Banjarnegara. The research results showed of four series of crop rotation tested, growing potatoes continuously could increase potato cyst nematode population as indicated by the highest of cyst population increased in this series compared with the others as high as 48,62%, whereas the lowest was 15,96% occurred on the first series of crop rotation in which welsh onion and france bean (non hosts) were grown. The development of the population was evaluated based on the initial population (before the first growing season) compared the final population (after the third growing season). The population increase on the first, second, third and fourth series of crop rotation tested were 15,96%; 38,50%; 25,84% and 48,62%, respectively, it means there inhibiting population development of G. rostochiensis on the first, second, third, and fourth series of crop rotation: 32,66%; 10,12%; 22,78%; and 0%, respectively.

Kata Kunci : Nematoda Sista Kentang,Pergiliran Tanaman, Crop rotation, Globodera rostochiensis, and population