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Pertumbuhan dan Hasil Tiga Varietas Kedelai dengan Berbagai Interval Pemberian Air Irigasi di Lahan Sawah Beriklim Kering Herawati, Nani; Ghulamahdi, Munif; Sulistyono, dan Eko
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 46 No. 1 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.977 KB) | DOI: 10.24831/jai.v46i1.12070

Abstract

Soybean (Glycine max L. Merrill) is an essential commodity due to its protein content and it is also as  functional  food which contains isoflavon as an antioxidants. Import policy is handled when there is a high demand of soybean in local market but lack of local production. This research aimed to study growth and yield of three  soybean varieties with differens watering intervals in paddy field under dry climate. This research was conducted in Sesela Village, Gunung Sari Sub District, District of West Lombok, Nusa Tenggara Barat Province from July to October 2015. This research used split plot design with three replications. The main plot was irrigation intervals every (2, 9, 16, 23, 30 days) and the sub plot was soybean varieties (Anjasmoro, Burangrang, and Tanggamus). The results showed that interaction between irrigation interval and varieties influenced plant growth and yield, such as plant height, number of leaves, leaf area, 100 seeds weight  and number of productive pod. Tanggamus variety has the highest number of pods of 146.33 and yield (4.2 ton ha-1) in paddy field. Keywords: number of leaves, productive pod, variety, yield
Pendugaan Kehilangan Hasil pada Tanaman Padi Rebah Akibat Terpaan Angin Kencang dan Curah Hujan Tinggi ,, Dulbari; Santosa, Edi; Koesmaryono, Yonny; Sulistyono, dan Eko
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 46 No. 1 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.52 KB) | DOI: 10.24831/jai.v46i1.14376

Abstract

AbstractRice lodging due to incident of extreme weather, i.e., combination of strong winds and high rainfall is eviden in Indonesia. However, yield loss in the area is rarely studied. In order to estimate yield loss on rice, a model for calculating the yield reduction was developed. The objective of present study was to analyze the effect of strong winds and high rainfall incidents on yield loss of rice in the field. The study was conducted at the Sawah Baru IPB, Bogor, Indonesia from February to April, 2016 on rice plots severe from natural incident of strong wind and high rainfall. The results showed that rice lodging from strong wind and high rainfall formed patterns and specific formations. We determined four major lodging formations,  five lodging degrees, and eleven different patterns due to wind direction. Overall, lodging occured on research area of 27.6% with production loss up to 11.89%. This research showed that estimation of yield loss due to incident of extreme weather could be conducted in the level of field based on area of coverage and degree of lodging. Application of the model on wider area needs further evaluation. Keywords: Agronomic character, extreme weather adaptation, modelling, lodging, rice variety
Pertumbuhan dan Hasil Kedelai di Lahan Rawa Lebak dengan Aplikasi Pupuk Hayati dan Kimia ,, Endriani; Ghulamahdi, Munif; Sulistyono, dan Eko
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 3 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (315.599 KB) | DOI: 10.24831/jai.v45i3.14488

Abstract

Soybean (Glycine max L. Merrill) demand is high in Indonesia, however national production is low, therefore improving productivity is important. The research was aimed to determine the effect of application of biofertilizer containing N- fixing and P- solubilizing bacteria on the growth and production of soybean in lowland swamp. The experiment was conducted  at  Labuhan Ratu VI Village, District of Labuhan Ratu, East Lampung Regency from September to December 2014. The experiment was arranged in factorial randomized block design with three replications. N and P fertilizers were applied in four levels. Doses of N were 0, 11.25, 22.50, 33.75 kg ha-1, doses of P were 0, 36, 72, 108 P2O5 kg ha-1, in combination with and without biofertilizer application. The results showed that interaction between biofertilizer and N significantly affected number of branches and number of leaves at maximum vegetative phase. The influence of three types of fertilizer had no significant effect on the productivity of soybean in lowland swamp with soil pH of 7.0 and medium soil fertility. It is recommended to apply Biofertilizer + 11,25 kg N ha-1 + 36 kg P2O5 ha-1 to obtain high soybean production in lowland swamp area.Keywords: nitrogen, phosphate, productivity, soil fertility