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All Journal Agrosains: Jurnal Penelitian Agronomi
Sumiyati Sumiyati
Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry

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Analisis Pertumbuhan Beberapa Varietas Kedelai pada Perbedaan Intensitas Cekaman Kekeringan Ratih Suryaningrum; Edi Purwanto; Sumiyati Sumiyati
Agrosains : Jurnal Penelitian Agronomi Vol 18, No 2 (2016): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.694 KB) | DOI: 10.20961/agsjpa.v18i2.18686

Abstract

Soybean demand in the market today has not been matched by domestic production. Many of the problems that cause insufficient  production of soy,  one of which is  the drought  affecting soybean growth and  yield. Efforts should be made to overcome the drought is to provide soybean varieties tolerant to drought stress. This study aims  to  assess  the  effect  of  the  difference  in  intensity  of  drought  stress  on the growth of some soybean varieties. This study uses a completely randomized design (CRD) factorial with two factors, the first factor and the second factor soybean varieties  drought  stress  levels.  Results showed significant  of lowering the value of RGR and NAR. The higher the level of drought stress will decrease soybean growth. Tolerance limits for each variety is at 80% moisture content.
Kombinasi Jenis Pasir dengan Serat Batang Aren serta Pengaruhnya terhadap Pertumbuhan dan Hasil Tomat secara Hidroponik Substrat Shufiyati Muniroh; Dwi Hardjoko; Sumiyati Sumiyati
Agrosains : Jurnal Penelitian Agronomi Vol 17, No 1 (2015): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.631 KB) | DOI: 10.20961/agsjpa.v17i1.18660

Abstract

This study aims to measure the effect of volcanic sand, native sea sand and sea sand washing substrate on the growth and yield of tomatoes, measuring the effect of arengan wood fiber substrate on growth and yield of tomatoes, measuring the effect of the combination of volcanic sand, native sea sand and sea sand washing with arenga wood fiber substrate compared to the growth and yield of tomato. The research was conducted from August to December 2014 in the screen house Faculty of Agriculture, Sebelas Maret University. This study uses a completely randomized design with 1 factors with 14 treatment. The analysis of the data was tested using the F test level of 5%. After that, if the result F tests 5% significant, the analysis continued with DMRT (Duncan Multiple Range Test) level of 5%. The results showed treatment volcanic sand, native sea sand and sea sand washing substrate produce growth and good results in tomatoes when watering is often done so that the plants do not wilt. Arenga wood fiber substrate treatment resulted in poor growth of the roots and results of tomatoes. Treatment volcanic sand, native sea sand sea sand washing genuine with arenga wood fiber (1: 1) to produce growth and good results on tomato plants.
Perbandingan Komposisi Ukuran Serat Batang Aren dengan Pasir Sebagai Substrat Hidroponik Seladaarenga wood fiber composition; sand; fiber size; lettuce; hydroponic substrate Dwi Hardjoko; Sumiyati Sumiyati
Agrosains : Jurnal Penelitian Agronomi Vol 18, No 1 (2016): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.901 KB) | DOI: 10.20961/agsjpa.v18i1.18682

Abstract

Lettuce (Lactuca sativa L.) is vegetables with high nutrient content and interest more people, meanwhile producing optimum, yet, therefore, need hydroponic substrate to increase productivity. The orange wood fiber is a waste produced by palm industry manufacturer. The waste of Arenga wood fibers has not used maximum yet, so if it’s piled up will be affects the ecosystem in around. We need to utilize the waste of Arenga wood fiber to be a substrate hydroponic. The aim of this research is to know the maximum of Arenga wood fiber composition in several sizes which is combined with the sands. It’s for increasing the growth and lettuce yield. The method of this research is completely randomized design with two factorials. They are the Arenga wood fiber composition with sand and size of Arenga wood fiber. The main variable of observation is root length, wide of leaves, and fresh weight of lettuce. The result of observation showed that the Arenga wood fiber composition and the sand composition for cultivation lettuce consist of 25% of Arenga wood fiber and 75% (1:3) of various size of sand. The highest root was 12.6 cm and it produced wide of leaves was 1602.3 cm2 and increased the fresh plants until 53.7 g.
Co-Authors Dwi Hardjoko Edi Purwanto Ratih Suryaningrum Shufiyati Muniroh