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All Journal Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Rhizobia
Sihombing, Parsaoran
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering

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PENGARUH PENINGKATAN DOSIS KALIUM DAN JENIS PESTISIDA NABATI TERHADAP PERSENTASE SERANGAN HAMA DAN PRODUKSI KENTANG DI SUMATERA UTARA Sidauruk, Lamria; Kaban, Masdasari; Sihombing, Parsaoran
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol 4, No 1 (2019): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.444 KB) | DOI: 10.31289/agr.v4i1.2713

Abstract

Potato production in Karo and Simalungun Regency of North Sumatra is severely limited by the high number of pest attacks,  so that the use of pesticides is absolutely necessary. Increasing potassium doses and application botanical  pesticides can be used as a strategy to reduce pest attacks on potatoes. This study aims to determine whether an increase in potassium dose and application of some botanical pesticides can reduce the percentage of pest attacks and then increasing potato production. Research was designed by factorial Randomized Block Design (RBD) with 2 factors, namely Potassium Dosage consist of 4 levels: K0 = Control; K1 = 100 kg / ha (30 g / plot); K2 = 150 kg / ha (45 g / plot); K3 = 200 kg / ha (60 g / plot). And the second factor is the type of botanical pesticide which consist of 3 levels, namely: N1 = 20 g Neem leaves/ liter of water; N2 = 20 g babadotan leaves/ liter of water; N3 = 20 g Kipahit leaves/ liter of water. Data were analyzed by analyzed of variance.The results showed that an increase in potassium dosage did not significantly affect the percentage of pest attacks and plant production variables. Botanical pesticides have a significant effect on the percentage of pest attacks, but have not significant effect on crop production variables. The lowest percentage of pest attacks was obtained from the application of botanical  pesticides from babadotan leaf extract.  In general, the percentage of pest attacks in the category was very low  (<25%), so that not significantly affect to production variables.
PENGARUH PEMBERIAN BIOCHAR DAN POC TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN PAKCOY (Brassica rapa L.) PADA TANAH ULTISOL: THE EFFECT OF PROVISION OF BIOCHAR AND POC ON THE GROWTH AND PRODUCTION OF PAKCOY PLANT (Brassica rapa L.) IN ULTISOL SOIL Panataria, Lince Romauli; Sihombing, Parsaoran
Jurnal Ilmiah Rhizobia Vol 2 No 1 (2020): Jurnal Ilmiah Rhizobia Edisi Februari 2020
Publisher : Prodi Agroteknologi Fakultas Pertanian Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/rhizobia.v9i1.217

Abstract

Penelitian ini dilakukan di lahan praktikum Fakultas Pertanian, Universitas Methodist Indonesia, Jl. Harmonika Baru, Tj. Sari, dengan ketinggian tempat ± 32 meter dpl. Penelitian ini dilaksanakan bulan Juli sampai dengan September 2019. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian biochar dan POC terhadap pertumbuhan dan hasil pakcoy(Brassica rapa L.)pada tanah ultisol. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 2 faktor. Faktor pertama adalah biocharterdiri dari 4 taraf yaitu : A0= 0 g/polybag (kontrol), A1= 100g/polybag, A2 = 150kg/polybag, A3 = 200 g/polybag. Faktor kedua adalah POC terdiri dari 3 taraf yaitu : N1= 5 cc/l air, N2 = 10cc/l air, N3 = 15 cc/l air.Hasil penelitian menunjukkan bahwa biocharberpengaruh nyata terhadap tinggi tanaman umur 5 MST, jumlah daun umur 5 MST, bobot segar per plot dan panjang akar tetapi berpengaruh tidak nyata terhadap bobot segar per sampel. Perlakuan POC berpengaruh nyata terhadap jumlah daun umur 5 MST dan bobot segar per plot tetapi berpengaruh tidak nyata terhadap tinggi tanaman, bobot segar per sampel dan panjang akar. Interaksi biochar dan POC berpengaruh tidak nyata terhadap seluruh parameter pengamatan.    
PENGARUH PENINGKATAN DOSIS KALIUM DAN JENIS PESTISIDA NABATI TERHADAP PERSENTASE SERANGAN HAMA DAN PRODUKSI KENTANG DI SUMATERA UTARA Sidauruk, Lamria; Kaban, Masdasari; Sihombing, Parsaoran
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol 4, No 1 (2019): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agr.v4i1.2713

Abstract

Potato production in Karo and Simalungun Regency of North Sumatra is severely limited by the high number of pest attacks,  so that the use of pesticides is absolutely necessary. Increasing potassium doses and application botanical  pesticides can be used as a strategy to reduce pest attacks on potatoes. This study aims to determine whether an increase in potassium dose and application of some botanical pesticides can reduce the percentage of pest attacks and then increasing potato production. Research was designed by factorial Randomized Block Design (RBD) with 2 factors, namely Potassium Dosage consist of 4 levels: K0 = Control; K1 = 100 kg / ha (30 g / plot); K2 = 150 kg / ha (45 g / plot); K3 = 200 kg / ha (60 g / plot). And the second factor is the type of botanical pesticide which consist of 3 levels, namely: N1 = 20 g Neem leaves/ liter of water; N2 = 20 g babadotan leaves/ liter of water; N3 = 20 g Kipahit leaves/ liter of water. Data were analyzed by analyzed of variance.The results showed that an increase in potassium dosage did not significantly affect the percentage of pest attacks and plant production variables. Botanical pesticides have a significant effect on the percentage of pest attacks, but have not significant effect on crop production variables. The lowest percentage of pest attacks was obtained from the application of botanical  pesticides from babadotan leaf extract.  In general, the percentage of pest attacks in the category was very low  (<25%), so that not significantly affect to production variables.
Co-Authors Kaban, Masdasari Laksono Trisnantoro Lamria Sidauruk