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Siwi Hardiastuti
Universitas Pembangunan Nasional "Veteran" Yogyakarta
Agriculture, Biological Sciences & Forestry

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Growth and Yield of Bestari Rice Varieties, Weeds Identification In Various Jajar Legowo Planting System and Fertilization Budi Rahayu Rena Ningsih; Oktavia Sarhesti Padmini; Siwi Hardiastuti
Jurnal Agrivet Vol 22, No 2 (2016): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v22i2.4817

Abstract

The aim of this research was to determine the interactions between jajar legowo planting system and variations of fertilization on the growth and yield of bestari rice varieties. The research was conducted in Sentono, Karangdowo District, Klaten regency, Central Java. Research started in April to August 2016. The study uses factorial design with two factors. The first factor was the variation of fertilization that consists of three levels, namely: P1 was the dosage recommendation in the form of chemical fertilizer application which was Phonska 600 kg / ha, P2 = 50% chemical fertilizer dosage recommendation plus 10 ton / ha of BATAN’s organic fertilizer products; P3 = 50% chemical fertilizer dosage recommendation plus 10 ton / ha of organic compost product of the Faculty of Agriculture UPN "Veteran" Yogyakarta. The second factor was the variation of jajar legowo planting system, namely: J1 = 2:1, J2 = 3:1, J3 = 4:1. Each treatment was repeated 3 times and 3 samples per plot, 27 experimental plots in the size of 4 m x 4 m with plant space of 12,5cm x 25 cm x 50 cm. Based on further analysis of variance with Duncan's Multiple Range Test (DMRT) with a level of 5%, it showed that there was no interaction between jajar legowo planting system and fertilizing variation on all parameters of growth and yield. J1 which produced average number of tillers, leaf number, grain weight per hill best grain meanwhile it has the biggest grain weight per hill so it reduce the amount of yield. P2 has the highest tiller number meanwhile it has the biggest grain weight per hill so it reduce the amount of yield. Dominant weeds before planting is Leersia hexandra swartz (NJD 28.98%), dominant weed in almost all experimental plots at age 21 DAP Panicum repens and 42 DAP is Echinocloa colonum.Keywords: bestari, weeds, jajar legowo, fertilization variations
WEEDS CONTROL WITH HERBICIDE DOSAGE AND FREQUENCY OF PGPR TOWARD GROWTH AND YIELD OF PADDY CROPS Avino Sudhana; Siwi Hardiastuti; Oktavia Sarhesti Padmini
Jurnal Agrivet Vol 24, No 1 (2018): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v24i1.4667

Abstract

The first aim of this research was to determine dose of herbicide and frequency of Plant Growth Promoting Rhizobacteria application that efficient to control weeds toward growth and yield of paddy crops. fertilization on the growth and brix value of sweet sorghum cultivated on marginal land. The factorial experiment was arranged in randomized completely block design, with three treatments. The first factor was dose of herbicide with three levels: H0 = without herbicide application, H1 = 1,25 L/ha, and H2 = 1,5 L/ha. The second factor was frequency of PGPR applications with three levels: P0 = without PGPR application, P1 = one time application, and P2 = two times application, each treatment was repeated three times.. Analysis of variance was used for data analysis, and than followed with Duncan Multiple Range Test (DMRT) if there was a significant different. The result showed that the herbicide application with cyhalofop-butyl and penoxsulam active ingredient doses of 1,25 L/ha and 1,5 L/ha was significantly increased weeds control efficiency per species above 90% (92-99%), shoot root ratio (34-40%), and dry weight of grain per hectare (7-8 tons/ha) than without herbicide application. Frequency of PGPR applications has no significantly effect on all parameters.Keywords: weeds, herbicide, PGPR, rice
The Application of Fertilizer on Various Jajar Legowo System to Rice Growth and Yield Ellen Rosyelina Sasmita; Siwi Hardiastuti
Jurnal Agrivet Vol 23, No 2 (2017): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v23i2.4813

Abstract

The research aims was to compare the effect of the use of inorganic fertilizer which combined with organic fertilizer on various cropping systems of jajar legowo plant toward the growth and yield of rice plants. The research methods used Split Plot by using Randomized Complete Block Design with three replications. The main plot is fertilizer type, comprises of three levels, P1 = 100% inorganic fertilizer (Phonska 600 kg/ha), P2 = 50% inorganic fertilizer + 10 ton/ha BATAN’s bio-organic fertilizer and P3 = 50% inorganic fertilizer + 10 ton/ha Faperta UPN “Veteran” Yogyakarta’s organic fertilizer. Sub plot was jajar legowo system, comprises of three levels, J1 = Jajar Legowo 2:1, J2 = Jajar Legowo 3:1 and J3 = Jajar Legowo 4:1. The results showed that there was no interaction between fertilizer type and jajar legowo system on rice growth and yield. There was no significant difference between 100% inorganic fertilizer with 50% inorganic + organic BATAN fertilizer and 50% inorganic + organic FP UPN fertilizer on plant height after 56 days of planting, the number of productive tillers, panicle length, the weight of 1000 grains and yield. The three jajar legowo system did not give significant influence on plant height; jajar legowo 4:1 system produced more tillers and the number of productive tillers is greater than jajar legowo 2:1 and 3:1. Jajar legowo system 2:1 produced higher yield than jajar legowo system 3:1 and 4:1.Keywords: fertilizer, jajar legowo, rice
EFFICACY OF THE COMBINATION OF RINSKOR AND PENOXSULAM HERBICIDE ON WEEDS CONTROL AND ON GROWTH AND YIELD OF TRANSPLANTING RICE Akbar Gangsar Gumelar; Abdul Rizal; Siwi Hardiastuti
Jurnal Agrivet Vol 24, No 1 (2018): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v24i1.4682

Abstract

This research aims was to determine of rinskor and penoxsulam herbicide combination at appropiate doses and not cause poisoning in rice plants as well as to know the yield of rice paddy plants due to weeds control of rinskor and penoxsulam herbicide combination compared to the usual herbicide used by farmers. This research conducted on the month August to November 2017 in the Pucangan Village, Kartasura Subdstrict, Sukoharjo District. This research used a complete randomized block design with one factor, twelve treatments and repeated 4 times, one the treatment of which is a control. Treatment of rinskor and penoxsulam herbicide combination with dose 750 ml/ha, 1000 ml/ha and 1250 ml/ha as wall as comperative herbicides penoxsulam & sihalofop (500 ml/ha & 800 ml/ha), penoxsulam (800 ml/ha), Natrium byspiripac (300 ml/ha), metil metsulfuron, etil klorimuron, 2,4D natrium (600 ml/ha), metil metsulfuron, 2,4D natrium, etil klorimuron (250+500 ml/ha), fenoksaprop etil dan etoksisulfuron (700 ml/ha), manual and control. Observed result were analyzed, if there is a real difference with a level of 5% will be tested continued using Skott Knott test at 5% confidence level. The result showed that rinskor and penoxsulam herbicide combination, starting with a dose 1000 ml/ha to 1250 ml/ha can control weeds better than other treatments and produce the highest yield of rice crops.Keywords : Herbicide combination, rinskor, penoxsulam, weeds, rice crops
Co-Authors Abdul Rizal Akbar Gangsar Gumelar Avino Sudhana Budi Rahayu Rena Ningsih Ellen Rosyelina Sasmita Oktavia Padmini, Oktavia