scholarly journals Aplikasi Amelioran Tanah dan MycoSilvi pada Falcataria sp. dan Ochroma bicolor Rowlee. untuk Reklamasi Lahan Pascatambang Pasir Silika

2020 ◽  
Vol 25 (3) ◽  
pp. 334-341
Author(s):  
Khoryfatul Munawaroh ◽  
Sri Wilarso Budi ◽  
Prijanto Pamoengkas

Open pit mining of silica sand causes some soil degradations and environmental impacts, such as lowering soil pH, lowering soil fertility, soil compaction, and toxicity of micronutrients such as Al, Fe, and Zn. The aim of this study was to analyze the soil properties of land post mining of silica sand and to analyze the growth response of Falcataria sp. and Ochroma bicolor by combination of soil ameliorant and MycoSilvi. The experimental design was split plot design of two treatment factors, MycoSilvi and soil ameliorant. The main plot is MycoSilvi that consist of two levels (MycoSilvi and without MycoSilvi). The subplot is soil ameliorant that consisted of six levels (compost 0 g, lime 0 g; compost 0 g, lime 1.56 g; compost 0 g, lime 3.12; compost 9 g, lime 0 g; compost 9 g, lime 1.56 g; compost 9 g, lime 3.12 g). The results showed that the soil ameliorant (lime 3.12 g and compost 9 g) and MycoSilvi was the best treatment to increase height, diameter, biomass, and mycorrhizal colonization of Falcataria sp. and O. bicolor.   Keywords: MycoSilvi, reclamation, soil ameliorant

2021 ◽  
Vol 7 (2) ◽  
pp. 47-51
Author(s):  
Lily Marlina ◽  
Joko Purnomo ◽  
Hilda Susanti

This study aimed to: (1) identify the interaction effect between varieties and mixed doses of urea + ZA on the growth and yield of shallots in Ultisol soil; (2) to identify the effect of each shallot varieties and the dosage mixture of urea + ZA which produce the highest yield in Ultisol soils. The research was conducted from April to June 2019 in Tungkaran Village, Martapura, with a split plot design. The main plot was shallot varieties (V) with three levels, namely Biru Lancor (v1), Bima Brebes (v2), and Super Philip (v3). Subplots were a mixture of urea + ZA (P) with four levels, namely 0 kg urea + 600 kg ZA (p1), 100 kg urea + ZA 400 kg (p2), 200 kg urea + 200 kg ZA (p3), and 300 urea kg + ZA 0 kg (p4). Each experiment was repeated three times. Therefore, there were 36 experimental units. Observation parameters included plant height, number of leaves per clump, number of bulbs per clump, fresh bulbs' weight per clump, and yield of stored dry bulbs. The results showed that the Bima Brebes variety (v2) had a significant effect on plant height, number of leaves, number of bulbs per clump, the weight of fresh bulbs per clump, and yield of stored dry bulbs. The mixture of 200 kg urea + 200 g ZA (p3) significantly affected plant height, number of leaves, number of tubers per clump, the weight of fresh tubers per clump, and yield of stored dry tubers.


Author(s):  
, Susilawati ◽  
Rujito Agus Suwignyo ◽  
, Munandar ◽  
Mery Hasmeda

The research objective was to study the agronomic and physiological characteristics of red chilli (Capsicum annuumL.) varieties under waterlogging stress. These studies were conducted at two locations: in Palembang, South Sumatra, from February to August 2010 and in Bogor in West Java, from September to November 2010. Experiments in Palembang was using split plot design with three replications. The main plot was waterlogging treatment for 1, 2, 3 and 4 days. The subplot was red chilli varieties: Kiyo F1, Riawan, Ferosa, Bravo F1 and Laris. Experiments in Bogor was conducted without the use of experimental design; the same plant varieties were waterlogged for 2 and 4 days. The results showed that waterlogging caused root damages on all varieties. Kiyo F1 had better agronomic characters and high levels of tolerance than other varieties. The content of ethylene in all varieties increased with increasing time of waterlogging, except for Laris. In all varieties both leaf chlorophyll and tissue N content tend to decline with the increase in waterlogging duration. However Bravo F1 experienced an increase in the chlorophyll content whereas Kiyo F1 had an increase in N in the plant tissue. Keywords: agronomic character, physiological character, red chili, waterlogging


Author(s):  
B Irawan ◽  
◽  
R P Tamin ◽  
R A Hardiyanti

The response of tropical trees to the change of light intensity has been reported to be varied among different species. Some reports argued that the growth was increasing parallel to the increasing of light intensity, but other reports mentioned that the sensitivity to the light intensity was depending on the species. Another environmental factor that has been scientifically proven to affect tree growth is humidity. While humidity itself also directly affected by the light intensity in the forest ecosystems. Therefore, it is possible that the growth pattern of trees under different light intensities is also affected by air humidity under the canopy. This research aimed to study the growth response of a light-demanding Alstonia scholaris and a shade-tolerant Eusideroxylon zwageri to the different levels of air humidity and light intensity. The experiment was conducted in Jambi, Indonesia from April to November 2019. The experiment was carried out using split plot design with factorial treatments. The main plot was the air humidity with three levels and the sub plots was light intensity with five levels. Four replicates were applied. In general, the A. scholaris tends to be more sensitive to the humidity and light intensity compared to E. zwageri. In particular, A. scholaris tends to be more sensitive to the light intensity while, E, zwageri is more sensitive to the humidity. However, there is also strong indication that the effects of light intensity to the growth, especially for A. scholaris, was affected by the humidity level.


2008 ◽  
Vol 5 (3) ◽  
pp. 340-345
Author(s):  
Baghdad Science Journal

A field trial was conducted in Experimental Station of The Field Crops Department – College Of Agriculture In Abu Ghraib, University of Baghdad to assess the effect of sulphur applications and the time after application on pH and EC of soil sample solutions ,and on the growth and yield of rape seed (Brassica napus L.)A split plot design was used with four replications , The main plot included four sulphur applications levels (0,2000,3000,4000Kg S/ha) the sub plot were the time after application (0,1,2,and 3 moths) .Sulphur application significantly decreased soil pH value ,although that decrease reached minimum parameter after two months from application date .Rather increment of sulphur application level significantly raised soil EC value, So that value decreased continuously with time after the application .Sulphur application level affected significantly increased plant height/cm and decreased seed oil content percent but not affected in seed yield /plant.


Author(s):  
Danner Sagala ◽  
Munif Ghulamahdi ◽  
Maya Melati

Saturated soil culture (SSC) technology appropriate to prevent pyrite oxidation on tidal swamps and has been proved to increase the productivity of soybean on non-tidal swamp. The objective of the research was to determine the growth response of soybean varieties under saturated soil culture on tidal swamps. The research was conducted at Banyu Urip, Tanjung Lago, Banyuasin District, and South Sumatera Province, Indonesia from April to August 2009. The experiment was arranged in a split plot design with three replications. The main-plot of the experiment was water depth in the furrow consisted of 10, 20, 30, and 40 cm under soil surface (USS). The subplot of the experiments was soybean varieties consisted of Tanggamus, Slamet, Wilis, and Anjasmoro. No-watering was arranged out of the design as a comparison. The result showed that nutrient absorption of N, K and Mn by Tanggamus was higher than those of other varieties, except K, however K absorption of Tanggamus was not significantly different from Anjasmoro. P and Fe absorption of Tangamus tended to be higher than the other varieties, although statistically they were not affected by variety. However, technically and economically, 20 cm USS was the most appropriate water depth for soybean production at tidal swamps.


2017 ◽  
Vol 6 (1) ◽  
pp. 21
Author(s):  
Arif Irawan ◽  
Darwo Darwo

Shorea assamica Dyer is one of the forest trees with recalcitrant seed type, It can not be stored for long periods. Storage technique of planting material in the form of seedlings is one solution that can be done to overcome the problems of the seeds with a short shelf life. The aim of the research is to determine the growth response of S. assamica seedlings toshading andgrowth inhibitor treatments. Research design was approached by split plot design. The main plot was shade and sub-plot was a growth inhibitor. The storage conditions consisted of (1) light (38,600-47,200 lux), (2) medium (19,342-35,300 lux) and (3) heavy shading (62-2,106 lux). The inhibitors used were (1) paclobutrazol 250 ppm, (2) NaCl 0.5% and (3) aquadest (as a control). The results showed that the combined treatment of paclubutrazol 250 ppm with heavy shade was able to suppress the growth of height, dry weight of root and seedling quality index of S. assamica at the age of 6 months optimally in nursery.


HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 762B-762
Author(s):  
George C.J. Fernandez

Split-plot design is a very popular experimental design in analyzing factorial treatments in horticultural experiments. Two different sizes or types of experimental units are assigned to main plot and the split-plot treatments. The SAS procedure GLM with the TEST option is commonly used to analyze the split-plot data by assigning the correct error term to test the main plot factor. In SAS GLM, no option is available to compare the two main factors within a split-plot factor. The CONTRAST tests and LSMEAN comparisons are valid only for comparing split-plot factors within a main plot treatment. The main factor standard error provided by the LSMEAN option is also incorrect. The new PROC MIXED procedure available in SAS 8.08 or above can be used to correct these problems in split-plot analysis. The analysis of split-plot experiments using the PROC MIXED is presented here.


2021 ◽  
Vol 748 (1) ◽  
pp. 012031
Author(s):  
Ai Komariah ◽  
Elly Roosma Ria ◽  
Endah Islamiyati ◽  
Noertjahyani ◽  
Nunung Sondari ◽  
...  

Abstract Chrysanthemum (Chrysanthemump) is a one of the most popular cutting flower commodities in Indonesia. The beauty of colors and variations in the shape of flowers and the low level of withering cause Chrysanthemum to be in great demand. The polyploid chrysanthemum has some superior properties but the growth rate and flowering time is slow due to colchicine. The study aimed to determine the influence of the concentration of the cytokinins in the growth and productivity of chrysanthemum polyploid genotypes. The experimental design as used Split Plot Design consists of 2 factors and 2 replications. The first factors were concentration of the cytokinin (Si, i are 1,…,4) as a main plot with different levels about 0, 1, 2,3, 4 ml L−1 of cytokinin solutions, respectively. The second factorswere the third generation of the polyploid chrysanthemum (G) genotype as a sub plot with 4 genotype, namely: g0 = KRA0, g1 = KRA1, g2 = KRA2, and g3 = KRA3. Based on the experiments and analysis results, it was found that the treatment of 3 ml L−1 of the cytokinin solution produced 16 shoots while the polyploid chrysanthemum genotype KRA2 gave the best response to the number of shoots at 12 WAP compared to other polyploid chrysanthemum genotypes.


AGRICA ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 1-9
Author(s):  
Kristono Yohanes Fowo

This study aims to determine the timing of proper peanut planting in intercropping cropping patterns with various pulut varieties of corn on the growth and yield of peanuts on dry land. The experimental design using the Split Plot Design consisted of two faktors repeated three times. Treatment of corn variety as the main plot cansisted of thee levels (V1: Local variety, V2: Uri variety, V3: Binthe Pulu variety) while planting time was placed as subplots including (T1: groundnut planted 15 days after planting Corn; T2: groundnut is Corn together with peanut planting, T3: groundnut is planted 15 days before planting Corn) Three replications were performed. Data was collected destructively. The F-test at 5% was used to examine the effect of treatments, while differences across treatments were based on the LSD at 5%. The results of the study showed that there was an interaction between the planting time and variety of varieties to the yield parameters of 100 seeds, whereas separately the treatment of plant time is 15 days before the pulut maize plant and planter simultaneously show the highest yield for the growth variable and yield variable of 2.02; and 2.05 tons ha-¹.


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