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DENA DWIYAN AGISTA

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Abstrak (Bhs. Indonesia)

Penelitian bertujuan untuk mengetahui pengaruh aplikasi asap cair dan dosis pupuk N, P, K berbeda terhadap jenis dan populasi hama, intensitas serangan hama dan hasil tanaman jagung manis. Penelitian dilaksanakan pada bulan Februari sampai April 2015 di kebun percobaan Fakultas Pertanian, Universitas Jenderal Soedirman pada ketinggian tempat 110 m di atas permukaan laut (dpl). Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan tujuh perlakuan dan diulang sebanyak empat kali. Perlakuan terdiri atas FP (Pemberian 100% pupuk N, P, K dosis rekomendasi); FTK (Pemberian 100% asap cair tempurung kelapa); FKS (Pemberian 100% asap cair kayu sobsis); FC (Pemberian 100% asap cair campuran tempurung kelapa dan kayu sobsis); ½P+TK (Pemberian ½ dosis pupuk N, P, K dosis rekomendasi dan asap cair tempurung kelapa); ½P+KS (Pemberian ½ dosis pupuk N, P, K dosis rekomendasi dan asap cair kayu sobsis); ½P+C (Pemberian ½ dosis pupuk N, P, K dosis rekomendasi dan asap cair campuran tempurung kelapa dan kayu sobsis). Variabel serangan hama yang diamati meliputi intensitas serangan hama, jenis dan populasi hama. Variabel hasil yang diamati meliputi bobot tongkol berkelobot dan tanpa kelobot, panjang tongkol, diameter tongkol, jumlah baris pertongkol, jumlah biji, hasil panen petak efektif (kg), hasil panen (t/ha) dan indeks panen. Hasil penelitian menunjukkan bahwa perlakuan ½P+TK dapat menekan intensitas serangan hama belalang, tetapi belum bisa menekan populasi hama belalang, kupu-kupu borbo cinnara dan intesitas serangan lalat bibit. Aplikasi asap cair dan setengah dosis pupuk N,P dan K rekomendasi hasilnya dapat menyamai hasil dan komponen hasil dengan perlakuan yang diberi 100% dosis pupuk N, P, K dosis rekomendasi.

Abtrak (Bhs. Inggris)

The objective of this study was to know the efffect of wood vinegar and N, P, K fertilizer applications on intensity, type and population of pest and sweet corn yield. The study was carried out starting from February to April 2015 in the experimental orchard of Agriculture, Universitas Jenderal Soedirman at 110 m above sea level (asl). Randomized Complete Block Design with four times of FP (100% of N, P and K recommended fertilizer dosage); FTK (100% wood vinegar of coconut shell); FKS (100% wood vinegar of wood sobsis); FC (100% wood vinegar of a mixture of coconut shell and wood sobsis); ½P+TK (half dose of N, P, K recommended fertilizer dosage and wood vinegar of coconut shell); ½P+KS (half dose of N, P, K recommended fertilizer dosage and wood vinegar of wood sobsis); ½P+C (half dose of N, P, K recommended fertilizer dosage and wood vinegar from a mixture of coconut shell and wood sobsis) were tested. The variable of pest attack observed were intensity of pest and type, and population of pest. The yield and yield components were the cob length, cob weight, number of seeds, number of seeds row, the cob diameter, yield, and harvest index. 
The results showed that the application of ½P+TK was able to supress of grasshopper intensity, but this method unable to suppress the populations of grasshoppers, rice swifts (borbo cinnara) and the attack of flies seeds. Application of wood vinegar and half recommended dosage of N, P, K fertilizer had an equal yield and components of  yield with 100% recommended dosage of N, P, K fertilizer.

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