| Abstrak (Bhs. Indonesia) | Penelitian ini bertujuan untuk mengetahui pengaruh pemberian BIO P60, BIO T10 dan fungisida secara tunggal atau gabungan dalam menekan penyakit bulai dan terhadap pertumbuhan serta produksi tanaman jagung varietas P21 di lapangan. Penelitian dilaksanakan di Laboratorium Perlindungan Tanaman Fakultas Pertanian Universitas Jenderal Soedirman dan lahan pertanaman jagung, Desa Jatisaba, Kecamatan Purbalingga, Kabupaten Purbalingga, mulai Februari sampai dengan Juni 2016. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan tiga ulangan, terdiri atas kontrol, BIO P60, BIO T10, fungisida fenamidon,dimetomorf dan metalaksil. Variabel pengamatan meliputi masa inkubasi, intensitas penyakit, dan laju infeksi, perkecambahan, tinggi tanaman dan jumlah daun, munculnya bunga petama kali, bobot basah dan kering buah per tongkol, jumlah tongkol, panjang tongkol, dan jumlah baris. Hasil penelitian menunjukkan bahwa BIO P60 secara tunggal atau gabungan mampu menekan intensitas penyakit bulai sebesar 22,37-40,19%. Perlakuan BIO T10 secara tunggal atau gabungan mampu menekan intensitas penyakit sebesar 18,8-37,57% serta fungisida fenamidon sebesar 46,43-55,67%. Penundaan masa inkubasi perlakuan benih dengan fungisida fenamidon sebesar 53,07-54,21%, BIO P60 sebesar 25,47–30,87% dan BIO T10 sebesar 17,35-26,66%.Perlakuan dengan menggunakan BIO P60 secara tunggal atau gabungan mampu meningkatkan perkecambahan 10,77%, tinggi tanaman 25,08-27,89%, munculnya bunga pertama kali 6,04–6,72%, panjang tongkol 2,49-10,4%, jumlah tongkol 20,9% serta bobot basah 19,19-27,27% dan bobot kering tongkol 17,49 – 27,67%. Perlakuan BIO T10 secara tunggal atau gabungan mampu meningkatkan perkecambahan 10,42%, tinggi tanaman 2,88-22,7%, jumlah tongkol 10,92-19,08%, panjang tongkol 9,26-15,11%, bobot tongkol basah 24,29–31,43% dan bobot tongkol kering 25,94 – 32,19%. |
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| Abtrak (Bhs. Inggris) | This research aimed to determine the effect of BIO P60, BIO T10 and fungicides alone or in combinationon to control downy mildew and on growth and production of corn P21 variety in the field. The research was carried out at the Laboratory of Plant Protection Faculty of Agriculture Jenderal Soedirman University and at corn fields, Jatisaba Village, Purbalingga Subdistrict, Purbalingga Regency, from February up to June 2016. Randomized block design (RBD) was used, with 3 replicants i.e. control, BIO P60, BIO T10, fenamidon, dimetomorf and metalaxyl fungicides. Variables observed were incubation period, disease intensity,infection rate, germination, crop height, number of leaves, the first flowering time, wet and dry weight of cob, the number of cobs, cob length, and number of rows. Results of the research showed that BIO P60 alone or in combination could suppress the intensity of diseaseas 22.37-40.19%. BIO T10 alone or in combination and fungicide fenamidon could suppress 18.8-37.57% and 46.43-55.67% respectively. BIO P60, BIO T10 and fungicide fenamidon for seed treatments could delay incubation period as 25.47-30.87%; 17.35-26.66% and 53.07-54.21% respectively. BIO P60 alone or in combination could increase 10.77% germination, crop height 25.08- 27.89%, the first flowering time 6.04-6.72%, cob length 2.49- 10.4 %, the number of cobs 20.9%, wet and dry weight of cob as 19.19-27.27% and 17.49-27.67% respectively. BIO T10 alone or in combination could increase germination 10.42%, crop height 2.88-22.7%, the number of cobs 10.92-19.08%, cob length 9.26-15.11%, wet and dry weight of corncob as 24.29-31.43% and 25.94-32.19% respectively. |
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