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INDONESIA
AGRITROP
Published by Universitas Udayana
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
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Articles 7 Documents
 1 
Search results for , issue "Vol. 26, No. 2 Juni 2007" : 7 Documents clear
BUNGA DAN BUAH GUGUR PADA TANAMAN MANGGIS (GARCINA MANGOSTANA L.) ASAL BIJI DAN SAMBUNGAN RAI, I NYOMAN
AGRITROP Vol. 26, No. 2 Juni 2007
Publisher : AGRITROP

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Abstract

Grafted mangosteen tree have a shorter juvenile period than that of the seedling trees because it starts to flower earlier. However, productivity of the grafted trees is low because number of flowers and fruits drop is high. The research was conducted to study the difference of flowers and fruit drop between seedling and grafted trees related to N, P, and K plant nutrition levels and position of growing flower and fruit. The result showed that percentage of flowers and fruits drop of grafted mangosteen (14,65% and 85,38%) were higher than those of seedling plants (6,93% and 16,58%). Yield of grafted tree (2,17 kg/plant) was significanly lower than that of seedling (7,07 kg/plant) exhibited by low number of harvesting fruit. N, P, and K nutrition leaf levels had no effect on flower and fruit number drop, not only on grafted trees, but also on seedling trees. Flowers and fruits which grow at the basal of tree and/or branch drop were hihger than those of midle and upper part of trees and branchs.
KERAGAMAN BEBERAPA SIFAT KIMIA DAN BIOLOGI TANAH PADA BERBAGAI TIPE PENGGUNAAN LAHAN RAWA LEBAK GOFAR, NUNI
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

The purposes of this study were to study: 1) the influence of agricultural land use on some swamp soil chemical (soil pH, Organic C content, N-total, and P-total) and biological (population of bacteria, fungi, and actinomycetes) properties, and 2) correlation between soil microbial population and Organic C content, N-total as well as P-total. Based on the results of field observation, it was determined 6 plant commodities with different length of land use as treatments and secondary forest as control. The results of this study showed that: 1) Differences in land use resulted in different soil chemical (soil pH, Organic C content, N-total, and P-total) and biological (population of bacteria, fungi, and actinomycetes) properties, 2) Soil organic C, N-total and P-total content together significantly affected on population of bacteria and fungi, but did not affected on actinomycetes population. The magnitudes of Soil organic C, N-total and P-total influence on bacteria, fungi, and actinomycetes population were 69,8 %, 59,8 % and 49,7 %, respectively, 3) as soil organic C and P-total contents were constant, soil N-total content significantly affected on population of bacteria and fungi, but did not affected on actinomycetes population, 4) Population of bacteria, fungi and actinomycetes was highly correlated with soil organic C and N-total content, but was not correlated with soil P-total content, 5) the most microbial variation was found on soil collected from rubber plantation, followed by orange and secondary forest.
PENGARUH LAMA PENIRISAN TERHADAP DAYA SIMPAN BENIH KAKAO (THEOBROMA CACAO L.) PUTRI DARMAWATI, IDA AYU; NGURAH RAKA, I GUSTI; KETUT AGUNG, IDA BAGUS
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

This experiment was carried out at Laboratory of Seed Technology, Agronomy Department, Faculty of Agriculture, Udayana University. The aim of this experiment was to find out the effect the airing periods on seeds water content, storability and viability of cacao seeds. Wet sawdust (60% water content) was used to keep the cacao seeds in storage. The cacao seeds was airing in four level before storing, those are: 1) without airing, 2) airing in two days, 3) airing in four days, and 4) airing in six days. The completely randomized design with six replications was used in this experiment. Every three days along the 30 days storage periods, the percentage of seeds germinated in storage, seeds water content, seeds germination, the unison of seedling growth, and the performance of seedling (leaf number, height, long of primary root, and totally of seedling dry weight) were detected. The storing using sawdust (60% water content) can save the viability and vigor of cacao seeds which is by six days airing experience. Storing seeds as long as 15 days can save the seeds germination by the rate of more than 80%, and up to 50% seeds germination rate can be save on the 21 days store periods. Storing seeds as long as 9 days can save the cacao seeds vigor?s (with the variable of unison of seedling growth) by the rate of more than 80%. The seedling performances were not significant differences between the level of airing treatment, which is detected every 3 days along 30 days store periods.
PENGUJIAN DAYA HAMBAT EKSTRAK BEBERAPA TUMBUHAN TERHADAP JAMUR CERATOCYSTIS SP. PENYEBAB PENYAKIT BUSUK BERAIR PADA BUAH SALAK BALI SUNITI, NI WAYAN
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

The research aimed to determine the inhibition activity of some plant extracts against Ceratocystis sp. on PDA medium, salacca piece, whole fruit and liquid medium. Research?s result showed that among nine plant extracts, two extracts inhibited the growth of Ceratocystis effectively, namely extract of Albinia galanga rhizome and boiled papaya leaf. Albinia galanga rhizome showed inhibitory 92.5 % on PDA medium and 89.6% on PD Broth liquid medium. Boiled papaya leaf extract showed 73.3% on PDA medium and 57.7 % on PD Broth liquid medium. On fruit piece and whole fruit inhibition activity of boiled papaya leaf extract has higher than to Albinia galanga rhizome extract.
RESPON PEMBUNGAAN BEBERAPA KULTIVAR ANTHURIUM BUNGA POTONG TERHADAP APLIKASI GA3 BUDIARTO, K.; WURYANINGSIH, S.
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

Anthurium is one of popular ornamental cut flowers in the world. Some constraints were revealed during production process due to the low plant productivity. Stimulating the plant to undergo earlier reproductive stage for producing more flowers was investigated. The application of growth regulator was predicted to have more desirable effects on this case as far as these concerned. The research was then, conducted to find out the effects of foliar spray of GA3 on the flowering response of several anthurium cultivars. The experiment was carried out at The Indonesian Ornamental Crops Research Institute from March to August 2005. A Randomized Completely Blocked Design (RCBD) with 7 replications was used. The first factor was GA3 concentration i.e. 0 (control), 500, 1000, 1500 and 2000 ppm, while the second factor was anthurium cultivars namely cv. Tropical, Kaumana and Safari. Results of the experiment showed that the application of GA3 hastened flower initiation and number of flowers per plant compared to the intact plant. However, the application of more than 500 ppm have no significant desirable effects. Stalk length and diameter decreased with the application of GA3 and more undesirable effects on stalk diameter was observed under GA3 higher than 1000 ppm. Cv. Tropical showed earlier flowering response and produced more flower than cv. Kaumana and Safari. However, this cultivar has the least stalk length and diameter. The highest stalk length and diameter was observed in cv. Safari.
HUBUNGAN ANTARA TEKSTUR TANAH DENGAN KADAR FOSFAT, KALIUM DAN KAPASITAS TUKAR KATION TANAH DARI BEBERAPA CONTOH TANAH DI BALI NARKA, I WAYAN
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

A laboratory experiment about correlation of texture (sand, silt and clay fractions) to phosphate (P), potassium (K) content and Cation Exchange Capacity (CEC) of soil was carried out at Soil Laboratory Faculty of Agriculture Udayana University in May until October 2006. Soil samples were taken from regencies of Bali and analyzed some properties of soil such as: soil texture, potassium, available P content and CEC of soil. Soil texture was analyzed with pipet method, potassium content with Bray I method, available P content with Bray I method and CEC with NH4OAc.saturation method. Pearson correlation method was used in this experiment to study the correlation of sand, silt and clay fractions to potassium, available P content and CEC of soil. The result of the experiment showed that, there are highly significant correlation between sand fraction and potassium, available P content and CEC of soil with coefficient correlation (r) of : -0,427**, -0,314* and -0,719** , respectively. Correlation between clay fraction and potassium content, CEC of soil with coefficient correlation (r) of : 0,430** and 0,661**, respectively. Between silt fraction and potassium, available P content and CEC of soil were not significant correlation, with coefficient correlation (r) : 0,127; 0,257 and 0,256, respectively . Between potassium content and CEC of soil showed a highly significant correlation with coefficient correlation (r) = 0,383**. Step wise analyzed showed that , potassium content was significantly influenced by clay fraction, while available P and CEC of soil were significantly affected by sand
TRANSFORMASI GEN ALBUMIN BUNGA MATAHARI (HELIANTHUS ANNUUS L.) PADA TANAMAN KEDELAI MENGGUNAKAN VEKTOR AGROBAKTERIUM TUMEFACIENS LBA4404 (PAL4404, PSW600) SECARA IN VITRO SUBERATA, I WAYAN
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

Usages of A.tumefaciens for the purpose of including DNA sunflower albumine into soybean cell, constituted of natural ability of A. tumefaciens to trasformation in specific form of DNA plasmid (T-DNA) into crop cell later, and then integrate at mains crop cell genome. Result of gene cloning of albumine grown at bacterium of E.coli, then carried over by A. tumefaciens LBA4404, passing method of triparental mating. A. tumefaciens LBA4404 (pAL4404, pSW600) yielded later, then transformation at soybean by in vitro. Result of analysis of transformation at soybean of transgenic by in vitro, can be proved with testing its resilience to gene activity of GUS-its and canamisin.

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