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Journal : AGRIC

PERAN AGEN HAYATI AZOTOBACTER-TRICHODERMA TERHADAP PERTUMBUHAN DAN HASIL CABAI MERAH (Capsicum annuum L.) PADA PERCOBAAN POT Reginawanti Hindersah; Priyanka Asmiran; June Putinella; Wilhelmina Rumahlewang; Marthin Kalay
Agric Vol. 29 No. 2 (2017)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2017.v29.i2.p137-146

Abstract

Mikroba tanah dapat digunakan sebagai input pertanian. Rizobakteri Azotobacter pemfiksasi nitrogen menjaga ketersediaan unsur hara nitrogen dan pertumbuhan tanaman sedangkan Trichoderma mampu menurunkan kejadian penyakit tular tanah melalui aktivitas antagonistik. Percobaan pot ini bertujuan untuk mendapatkan dosis dan waktu aplikasi inokulan Azotobacter- Trichoderma yang dapat meningkatkan ketersediaan nitrogen tanah, pertumbuhan dan hasil tanaman cabai (Capsicum annuum L.). Bibit cabai ditanam di tanah dengan kesuburan rendah yang dicampur dengan pupuk kotoran sapi. Rancangan percobaan adalah rancangan petak terbagai yang menguji empat taraf dosis inokulan dan tiga waktu aplikasi. Hasil percobaan memperlihatkan bahwa tidak ada pengaruh agen biologi terhadap tinggi tanaman pada tiga dan enam minggu setelah tanam. Inokulasi 7,5 g pot-1 inokulan padat Azoto-Tricho pada saat tanam secara signifikan meningkatkan kadar NO3 - tanah jika diikuti dengan penyiraman inokulan cair Azotobacter ke tanah pada 10 hari setelah tanam. Inokulan padat Azoto-Tricho meningkatkan hasil tanaman. Hasil tertinggi, 290 g per tanaman diperoleh dari tanaman yang diberi 7,5 g Azoto-Tricho pada saat tanam diikuti aplikasi inokulan cair Azotobacter. Percobaan pot ini menjelaskan bahwa inokulan padat Azotobacter-Trichoderma berpotensi untuk digunakan sebagai agen hayati pada produksi cabai.
NITROGEN FIXING BACTERIA AZOTOBACTER AS BIOFERTILIZER AND BIOCONTROL IN LONG BEAN Reginawanti Hindersah; Marthin Kalay; Abraham Talahaturuson; Yansen Lakburlawal
Agric Vol. 30 No. 1 (2018)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2018.v30.i1.p25-32

Abstract

Azotobacter is Plant Growth Promoting Rhizobacteria through the mechanism of nitrogen fixation and phytohormon production but this rhizobacteria has a role to control plant diseases. The objective of experiment was to evaluate the activity of Azotobacter as biofertilizers as well as biocontrol on long bean cultivation in damping off endemic land in Ambon city, Maluku Province. The field experiment was arranged in completely randomized block design. Inoculation of long bean by Azotobacter has been done by seed inoculation, soil inoculation before planting, and plant inoculation. Plants treated with Azotobacter received fertilizer NPK of ¾ or ½ dosage recommendation while control plants were received 100% NPK. Research showed that no differences between yield of long bean inoculated with Azotobacter sp +reduced doses of NPK with that of control plants. Any application method of Azotobacter inoculation lowered damping off diseases incidence significantly until 10 days after planting, but no effect of inoculation on late blight at 21 days after planting. This study confirmed that Azotobacter has dual activity to reduce the dose of NPK fertilizer and control damping off.
PEMANFAATAN PUPUK HAYATI DAN BAHAN ORGANIK TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG MANIS (Zea mays saccharata) A. Marthin Kalay; Reginawanti Hindersah; Irene A. Ngabalin; Marina Jamlean
Agric Vol. 32 No. 2 (2020)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2020.v32.i2.p129-138

Abstract

Growth and production of corn plants require land with sufficient nutrients. Utilization of biological fertilizers and organic materials carried out with the aim of increasing the yield of corn. The treatments that were tried were the provision of compost, livestock manure, compost and livestock manure, each of which was added by spraying a consortium of biological fertilizer. The experiment was designed using a randomized block design with five replications. The results showed that the application of organic-based fertilizers affected plant height from 17 - 49 days after planting, weight of fruit with kelobot, weight of cob and ear length. Provision of compost or livestock manure and added with a biological fertilizer consortium by spray gives a higher effect compared to the provision of compost or livestock manure which is not added to the consortium of biological fertilizer. To increase the productivity of maize plants it is recommended to use a consortium of biological fertilizers applied by spraying at intervals of seven days until the plants are 49 days after planting.