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All Journal Journal of Degraded and Mining Lands Management Plantropica: Journal of Agricultural Science
Eko Widaryanto
Brawijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Yield response of ten varieties of sweet potato (Ipomoea batatas L.) cultivated on dryland in rainy season Akbar Saitama; Agung Nugroho; Eko Widaryanto
Journal of Degraded and Mining Lands Management Vol 4, No 4 (2017)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.465 KB) | DOI: 10.15243/jdmlm.2017.044.919

Abstract

Sweet potato is a tuber commodity and one of alternative crops in Indonesia. The demand of sweet potato in Indonesia continues to increase. However, the supply of sweet potatoes for consumption estimated is 2020 in Indonesia will be deficit. Low production of sweet potato is basically due to the decrease of land area as cultivation production and also sweet potatoes have a low yield when planted in rainy season. Based on the high utilization of sweet potato make demand for this commodities continues to increase.Therefore, several strategies to increase crop yields of sweet potato needs to be done. This study aimed to elucidate various sweet potato varieties that can cultivated on dry land in the rainy season. This study was conducted from November 2016 until March 2017 using a randomized block design with treatments of  ten varieties of sweet potato consisting of (V1) Papua Solossa variety, (V2) Jago variety, (V3) Kidal variety, (V4) Antin-1variety, (V5) Sari variety, (V6) Sawentar variety, (V7) Beta-2variety, (V8) Antin-2variety, (V9) Antin-3 variety, (V10) Beta-1variety. The results showed different responses of each variety.The vegetative growth was high as shown by the LAI value of 7.23 at 90 days after planting. In conclusion, the sweet potato leaves had to be prune to boost the agronomic yield. Yields of  ten varieties of sweet potato crops ranged from 8.86 to 44.76 t/ha. Some varieties such as Sari, Papua Salosa and Beta-2 varieties showed high yield although they were planted in moorland conditions in the rainy season.
Bioactive compound from mangoes leaves extract as potential soil bioherbicide to control amaranth weed (Amaranthus spinosus Linn.) Rifauldin Syahri; Eko Widaryanto; Karuniawan Puji Wicaksono
Journal of Degraded and Mining Lands Management Vol 4, No 3 (2017)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.891 KB) | DOI: 10.15243/jdmlm.2017.043.829

Abstract

Bioherbicide is important approach for sustainable farming practices. One of plant that has potentially as bioherbicide, which is environmentally safe, is mango. Mango leaf extract is useful as bioherbicide because it produces allelochemical compounds, which could inhibit the weed growth. This research was designed to study the effect of several mangoes species leaves extract to control dominant weed (amaranth). Split plot design was implemented using mango species (S) as the main plot; S1 (Mangifera odorata Griff.), S2 (Mangifera foetida Lour) and S3 (Mangifera indica L.). While the sub plots were concentrations of mango’s leaf extract (K), that included 0, 500, 1000, 1500, and 2000 ppm. Results of the research showed that all parameters of weed growth (amaranth) were inhibited along with the increase of concentration of the mango’s leaf extract. The results also showed the significant inhibition of amaranth’s dry weight. Among three species of mangoes, M. indica L. showed the best inhibition mechanism to the amaranth weed, which significantly suppressed the weed growth on just 1000 ppm concentration. 
Analisa Daya Simpan Rimpang Kencur Aksesi Blitar dan Banyuwangi pada Budidaya di Bawah Naungan 50% dengan Pemupukan MgSO4 Alifia Rizky Dalilah; Akbar Saitama; Akbar Hidayatullah Zaini; Eko Widaryanto
PLANTROPICA: Journal of Agricultural Science Vol 8, No 1 (2023)
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2023.008.1.1

Abstract

Kencur (Kaempferia galanga L.) salah satu tanaman obat yang dikonsumsi oleh masyarakat Indonesia karena memiliki khasiat yang banyak untuk mengobati atau mencegah penyakit. Pada penelitian yang sebelumnya telah dilakukan yaitu melihat pertumbuhan pada beberapa aksesi di Jawa Timur salah satunya adalah aksesi Kab. Blitar dan aksesi Kab. Banyuwangi dengan perlakuan pemberian naungan tanaman jati dan tanpa naungan, perlakuan naungan tanaman jati menghasilkan pertumbuhan yang optimal namun intensitas yang didapatkan oleh tanaman kencur masih kurang optimal sehingga perlu diberikannya naungan 50% agar intensitas yang masuk tidak terlalu tinggi maupun rendah.  Pupuk sulfur dapat digunakan untuk membantu tanaman kencur mengalami penyusutan yang lebih rendah pada rimpang selama masa penyimpanan dan dapat meningkatkan bobot tanaman kencur. Penelitian ini bertujuan untuk mengetahui pengaruh dosis pupuk MgSO4 terhadap penyusutan bobot rimpang pada dua aksesi kencur  Metode penelitian ini menggunakan Rancangan Petak Terbagi (RPT) dengan petak utama adalah aksesi Kab. Bitar dan aksesi Kab. Banyuwangi dan anak petak adalah dosis pupuk sulfur 0, 60, 90 dan 120 kg ha-1.  Hasil penelitian yang telah dilakukan menunjukan bahwa dengan pemberian dosis pupuk sulfur pada kedua aksesi akan menghasilkan penyusutan sebesar 13% hingga 19% dan apabila tanpa pemberian pupuk sulfur sebesar 34%, dengan pemberian dosis pupuk sulfur 90 kg ha-1 mengalami penyusutan yang lebih rendah dibandingkan perlakuan lainnya.   
Co-Authors Agung Nugroho Akbar Hidayatullah Zaini Alifia Rizky Dalilah Karuniawan Puji Wicaksono Rifauldin Syahri Saitama, Akbar