Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal Agricultural Science
Bambang Gunawan
Faculty of Agriculture, Merdeka University Surabaya
Agriculture, Biological Sciences & Forestry

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
The Effect Of Sawdust And Chaff Media Storage OnCocoa (Theobroma Cacao L.) Seeds Viability Muchammad Toyyib; Bambang Gunawan; Bambang Wicaksono Hariyadi
Agricultural Science Vol. 1 No. 1 (2017): September
Publisher : Faculty of Agriculture, Merdeka University Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objective of the research is to determine the effect of sawdust and chaff media storage on viability of cocoa (Theobroma cacao L.) seeds. Cocoa seeds’ viability need to be maintained during storage/shipment to planting destination. The research uses simple group randomized design (RAK)consisting of five (5) treatment with three (3)replicates. Assignment of treatment is carried out in randomized trial plots. The varieties tested is F1 hybrid varieties obtained from Indonesia Coffee and Cocoa Research Center. The parameters observed included percentage (amount) of germination, rate of germination, and gross weight of sprouts. The result indicates shows that media storage treatment using sawdust and chaff provides significant effect on the percentage (number) of seeds germinate, sprout and speed or rate of gross weight of cocoa seed sprouts. In addition, control treatment (storage without chaff or sawdust) resulted in the highest percentage (number) of germinated seed, while the highest germination rate and gross weight of sprouts is indicated by treatment of storage with chaff of 100% although not significantly different statistically with 50% chaff.
Improved Growth and Yield of Pakchoy(Brassica Rapa L.)with Organic Fertilizer plusVitamin-B1 and Auxin Bambang Gunawan; M. Ikhsan F; Bambang Wicaksono Hariyadi
Agricultural Science Vol. 1 No. 1 (2017): September
Publisher : Faculty of Agriculture, Merdeka University Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study is to determine the effect of POC Plus concentration on mustard growth and yield. The method used is Group Randomized Design, with 1 (one) factor of POC Plus concentration (Liquinox start)including 8 levels of treatment and 3 replicates. There is significant effect of POC Plus concentration treatment to increase the growth and yield of pakchoy in all parameters of observations compared to the control treatment. The highest gross weight per plant is achieved by treatment L7 at the age of observation 35 days after planting by 338.36%. The highest growth and yield is achieved by treatment L7 by using 17.5 ml per liter of water POC Plus. However, statistically the best value is achieved by treatment L6 with concentration of 15 ml per liter of water POC Plus as there is no significant difference with L7 treatment in all parameters of observations including plant length, leaf number and fresh weight per plant at the age of 35 days after transplanting.
Media Influence of Planting And Concentration of Organic Liquid Fertilizer on The Growth And Results Lettuce (Lactucasatival.) Sri Purwanti; Bambang Gunawan; Ari Yulianto
Agricultural Science Vol. 1 No. 2 (2018): March
Publisher : Faculty of Agriculture, Merdeka University Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The lettuce is a leafy vegetable that comes from the (state) temperate. Historically, this plant has been cultivated since 2500 years ago. Lettuce plants came from the Americas. This is evidenced by Christopher Columbus in 1493 that found the plant lettuce in the western Hemisphere and the Bahamas (Rukmana, 1994). This study aims to determine the effect of growing media on growth factors, the influence of the concentration of liquid organic fertilizer (POC), the interaction effect of these two factors and yield of lettuce. The results showed There is a very real effect of growing media composition in all parameters studied were long observation of plants, number of leaves and fresh weight per plant. The best results were achieved by treatment K2 is 2 kg of manure per plant. There is a very real effect of concentrated liquid fertilizer (POC) "Supermer" on all parameters studied were long observation of plants, number of leaves and fresh weight per plant. The best results are achieved by P4 treatment The concentration POC 2 ml / liter of water. There is no real interaction due to a combination treatment of the media composition and concentration of liquid organic fertilizer (POC) "Supermes".
Supplying Liquid Organic Fertilizer (POC) With Organic Waste Materials On The Growth And Product of Lettuce (Lactuca Sativa L.) Bambang Gunawan; Nurul Huda; Andri Mulyono
Agricultural Science Vol. 4 No. 2 (2021): March
Publisher : Faculty of Agriculture, Merdeka University Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Liquid organic fertilizers can come from feces (animals, humans), agricultural waste, agricultural processing waste, household waste, urban waste, and production waste. Waste in general is a case of environmental pollution which can cause environmental problems and deteriorate health for the community, this is caused by liquid waste obtained from various industrial activities, hospitals, markets, households, especially in food industry waste, because in the process it still leaves elements that can become part of the process water and discharged into the environment. The use of various wastes to become organic fertilizers is an effort to overcome the problem of environmental pollution, with high organic matter, waste can act as an organic source of food by microbial growth. The purpose of this study was to determine the various POC materials from organic waste that would have a better effect on growth and yield in lettuce plants. Based on the results of the study, it can be concluded as follows:There is a significant effect on plant length variables on wet weight per plant with R Square of 0.69884 (69.88%) at 28 days of age observation and number of leaves with R Square of 0 , 7025 (70.25%) at 35 days after transplanting and there was a significant effect of the K3 treatment (POC 12%), plant length and number of leaves on the wet weight per plant which gave a higher value than the K1 and K2 treatments with Adjusted R Square of 0.935293 (93.53%); but statistically not significant difference with treatment K2 (POC 8%) with Adjusted R Square of 0.706472 (70.65%).
Increasing Productivity Long Bean Plant (Vigna Sinensis L) With Organic Vermicompost Fertilizer Bambang Gunawan; Fauziatun Nisak; Sri Purwanti; Nurlina
Agricultural Science Vol. 6 No. 1 (2022): September
Publisher : Faculty of Agriculture, Merdeka University Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55173/agriscience.v6i1.78

Abstract

Long beans are classified as seasonal plants that can begin to be harvested approximately 6-9 weeks after planting and then periodically until approximately 3 months after planting, then the plants experience aging which results in low flower and fruit production. The harvest can be in the form of young pods which contain lots of vitamins A, B and C; medium for the production of mature seeds containing protein, fat and carbohydrates. The productivity achieved by farmers is still much lower when compared to the potential yield of long beans which can reach 20-25 tons/ha of fresh pods. The purpose of the study was to determine the increase in the productivity of long bean plants through the application of organic vermicompost fertilizer.  The results of the study provide the following conclusions: There was a significant effect on the treatment of vermicompost on all observed variables, namely plant length, number of leaves, number of fruit (pods) per plant, and fresh weight of fruit (pods) per plant; and giving vermicompost as much as 1.50 kg per plant (treatment K6) gave a better average effect than other treatments at the end of the observation on the variables of plant length, number of leaves, and number of fruit (pods) per plant, although it was not significantly different by giving vermicompost as much as 1.25 kg per plant and 1 kg per plant on the variable total fresh weight of fruit (pods) per plant studied.
Co-Authors Andri Mulyono Ari Yulianto Bambang Wicaksono Hariyadi Fauziatun Nisak M. Ikhsan F Muchammad Toyyib Nurlina Nurul Huda Sri Purwanti Sri Purwanti