Sawah Baru Research Articles

Analisis Genetik Arsitektur Malai Padi Menggunakan Dua Populasi F2

<em>Improvement of rice panicle architecture is one important objective in the development of improved new-plant-type rice varieties. Panicle architecture is directly related to yield components in rice. The aims of this study were to obtain information on inheritance pattern of panicle architecture on F2 generation and to obtain the best selected individuals. The experiment was conducted at Sawah Baru Experimental Farm Bogor, from May to October 2016. Two F2 populations derived from crosses of IPB 3S/IPB160-F-36, IPB160-F-36/IPB 5R and three genotypes of parents were used as experimental materials. A total of 208 and 204 plant samples were taken representing each of the two F2 populations and 20 plants representing the parents. Three panicles were taken randomly from each individual as observed samples. The results showed that additive gene action influenced number of primary branches in population of IPB 3S/IPB160-F-36, whereas in the population of IPB160-F-36/IPB 5R, most of the panicle architecture traits were controlled by additive gene action except for the length of primary branches. All of panicle architecture traits were controlled by relatively many genes except length of primary branches and number of grains on primary branches in the IPB 3S/IPB160-F-36 population. The panicle architecture of the two observed population was genetically varies. The heritability estimates were moderate to high. Selection could increase the mean of panicle architecture traits using either single or multiple traits simultaneously.<br /><br />Keywords: gene action, heritability, genetic variability, panicle traits <br /><br /></em>

Pelatihan Pengelolaan Keuangan Keluarga bagi Ibu Rumah Tangga pada Kelompok Pemberdayaan dan Kesejahteraan Keluarga (PKK) di Keluarahan Sawang Baru Kecamatan Ciputat Tangerang Selatan Banten

The issue of financial arrangement is a matter of individual and housewife problems especially in arranging and managing family finances. A group of housewives who are members of the PKK (Empowerment and Family Welfare Group) Family Group in Sawah Baru Subdistrict, Ciputat District, South Tangerang, Banten have the same problem which can not manage family finances. One of the 10 Basic Programs of the PKK is "Healthy Planning" which states that healthy planning for the family includes the affairs of the balance of income and household expenditure. In an effort to provide solutions to existing problems in the community, the Accounting Study Program Universitas Pembangunan Jaya offers cooperation with the provision of Family Financial Management Training for Housewives. Training methods in activities here include questioners, lectures, tutorials and discussions. From the results of the training From the record results that have been done by the housewives, the results obtained that as many as 64% of housewives can manage household financial management well because the results obtained from the calculation of a surplus or positive balance which means that at the end of the month there residual funds that can be saved or used for other things, while as many as 36% of housewives have not been able to manage household financial management properly.

Kendali Genetik Toleransi Kekeringan pada Padi Sawah (Oryza sativa L.)

ABSTRACT<br /><br />Drought has become a main barrier of rainfed rice in dry climate and short wet season areas. Growing drought-tolerance varieties is a practical approach to minimize yield lost of rice by the drought stress condition. The aims of this research were to examine the inheritance of drought tolerance character, to identify selection traits, and to estimate genetic gain for drought tolerant on lowland rice. Four rice varieties, i.e., Jatiluhur, Mentik Wangi, IR64, Way Apo Buru, were fully diallel crossed. The parent varieties and the F1’s were grown at Sawah Baru, Dramaga experimental field in two irrigation treatments, optimum and sub optimum where irrigation was applied until three weeks after transplanting. A randomized complete block design with three replications for each irrigation treatment was applied to the experiment. The results showed that there is a significant maternal effect on tiller number. The values of additive variance were higher than the dominance for all other characters except tiller number and grain weight per plant. The highest value for narrow sense heritability was achieved by panicle length.<br /><br />Keywords: diallel, drought, genetic, rice<br /><br />

Peran Pupuk Organik dalam Peningkatan Efisiensi Pupuk Anorganik pada Padi Sawah (Oryza sativa L.)

ABSTRACT<br />Application of organic fertilizer into the soil is designated as a source of macro, micro nutrients and organic acids; it also acts as soil ameliorant that improve physical, chemical and biological properties of soil. Application of high rates organic fertilizer has a constraint namely the availability and ease of application. Therefore, it is necessary to learn the use of organic fertilizer with low rates to improve the efficiency of chemical fertilizers. This research was aimed to study the effect of organic and inorganic fertilizers on growth and yield of paddy rice, as well as the efficiency of N, P, K inorganic fertilizer. Field experiment was conducted at Sawah Baru Research Station, University Farm IPB, Bogor, West Java from September to December 2013. The experiment used Randomized Block Design consisted of two factors: rates of organic fertilizer (0, 250, 500, 750, and 1,000 kg ha-1), and rates of inorganic fertilizer (0, 100, 200, 300, and 400 kg ha-1). The results suggested that the application of 1,000 kg organic fertilizer ha-1 + 400 kg inorganic fertilizer ha-1 did not show significant interaction. Application of organic fertilizer alone up to 1,000 kg ha-1 resulted in low growth and yield. Increasing rates of application up to 400 kg inorganic fertilizer ha-1 increased the growth and yield of paddy rice. The highest N efficiency was 89.19% at a rate of 500 kg organic fertilizer ha-1 + 200 kg inorganic fertilizer ha-1, whereas the highest efficiency of P and K, respectively were 69.55% and 92.52% at a rate of 750 kg organic fertilizer ha-1 + 300 kg inorganic fertilizer ha-1.<br />Keywords: NPK, organic fertilizer, paddy rice

Pengaruh Bahan Perbanyakan Tanaman dan Jenis Pupuk Organik Terhadap Pertumbuhan Tanaman Binahong (Anredera cordifolia (Ten.) Steenis)

<p>This research was aimed at studying the effect of plant propagation material and organic fertilizer on Anredera cordifolia [Ten.] Steenis growth. The experiment was conducted at the Sawah Baru Experimental Field, IPB from March to June 2010. This study was laid out in a factorial randomized block design consisting of two factors. The first factor was the plant material i.e. two types of planting materials, root rhizome and stem cuttings with leaves. The second factor was the type of organic fertilizer i.e. without fertilizer as the control, combination of soil and organic fertilizer 1:1 (v/v), i.e. compost, cow manure, and chicken manure. The result showed that stem cutting gave higher plant height, leaf number and width and number of branches. Treatment of planting medium significantly affected plant height, number and width of leaf, fresh and dry weight of roots, stems and total weight of fresh leaf. Cow manure gave the best effect. Interaction of plant propagation material and organic fertilizer only significantly affected plant height at 2 Week After Planting (WAP) and root dry weight. Stem cuttings is a better plant propagation material on all types of organic fertilizer than rhizome.</p><p><br />Key words:organic fertilizer type, propagation materials, Anredera cordifolia</p>

Rekomendasi Pemupukan Kalium untuk Tanaman Nenas Berdasarkan Status Hara Tanah

Potassium (K) is required in a large amount for plant growth and production of most fruit crops, including pineapple. However, excess application may decrease its growth and production. Therefore, fertilizer application must be site specifi c, based on soil nutrient status and plant requirements. The aims of the research were (1) to determine the soil K nutritional status of pineapple and (2) to determine the optimum dosage of K fertilization for pineapple grown in Sawah Baru, Darmaga, Bogor. The research was conducted using split plot randomized block design with fi ve soil K status as main plots i.e. 0, 70, 140, 210, and 280 kg K2O ha-1 representing status levels of very low, low, moderate, high, and very high, respectively. The sub plot was dosage of K fertilizer i.e. 0, 200, 400, 600, and 800 kg K2O ha-1. The result of the research showed that plant growth and production of pineapple were improved by soil K nutrient status and dosage of K application. The level of soil K nutrient availability was classifi ed into low ( 50 ppm K2O). Potassium fertilizer is recommended for the soil with low soil K status of 634 kg K2O ha-1 .

Akumulasi dan distribusi bahan kering pada beberapa kultivar kacang tanah

This research was carried out in April–September 2007. The research objective was to study the dry matter distribution pattern of several peanut cultivars. Twenty cultivars were planted at two different locations, Cikarawang and Sawah Baru Experimental Field but at the same elevation (250 m above sea level). The cultivars were scored according to morphological and physiological characters, total N and total non-structural carbohydrates (TNC), yield and yield components. There were no statistically differences in pod yield, seed yield and harvest index between the cultivars, but there were differences in dry matter distribution between cultivars. TNC content in stem correlated positively with pod fi lling. Carbohydrates for pod fi lling presumed were derived from dry matter accumulation in early pod fi lling stage. It was concluded that the ideal growing type of peanut are early accumulated dry matter but almost no increase of dry matter accumulation in upper part of plant during seed development. Keywords: dry matter distribution, pod fi lling, peanut

Desain Roda Besi Bersirip Traktor Dua-Roda dengan Bantuan (CAD)

Traction performance of a cage wheel for two-wheel tractor depends on its shape dimension, lugs materials and soil condition. In order to get the optimum design of the cage wheel, the relation betwen tractor, implement and soil condition should be considered carefully. The objective of this research was to determine optimum design parameter of cage wheel based on working condition of tractor and to make a computer program for design analysis and for producing engineering drawing of the cage wheels. Soil condition and two-wheel tractor construction were measured and the data was used for getting the optimum design parameters by using optimization method. A computer program was developed and employed for the optimization process and for drawing the design result. As a trial of the program, the optimum design parameters of cage wheel for Yanmar YST-EX tractor working at Sawah Baru rice field were found to be: 80 cm of wheel diameter: 10 lugs: 19.63 cm x 9.68 c, of lug size; and 20o of lug angle. The result revealed that the program could determine the optimum design parameters and could produce the engineering drawing of the cage wheel property. Keyword: cage wheel. Design parameter, engineering drawing, computer program.

Pertumbuhan dan Hasil Dua Klon Ubijalar dalam Tumpang Sari dengan Jagung

An experiment to evaluate the growth and yield of two sweetpotato clones in intercropping with maize was conducted in IPB experimental farm in Sawah Baru from December 2004 to April 2005. In intercropping, the two sweetpotato clones of CIP-1 and CIP-6 were planted among to maize rows. Planting space of sweet potato was 100 cm x 25 cm and maize was 100 cm x 12.5 cm in a plot size of 3 m x 3 m. Besides, the two crops were also planted in monoculture. The experiment was designed as a Randomized Block Design (RBD) and replicated three times. Dry matter of stem, leaves, and roots of the two sweet potato clones in intercropping were lower than in monoculture. The same response occurred for yield of storage root. The storage root weight of sweet potato clone, respectively, in monoculture and intercropping was 1.350 and 2.533 kg plot -1 of CIP-1 and 3.167 and 11.083 kg plot -1 of CIP-6. On the other hand, there was no significance difference in growth and yield of maize in monoculture (3.35 kg plot -1 ) and intercropping (3.13 kg plot -1 ). Land equivalent ratio of the intercropping maize with CIP-1 and CIP-6 were 1.7 and 1.4, respectively. It means that land productivity can be increased by those intercropping. Key words: Sweet potato clones, intercropping, maize

Peanut Cultivar Differences in Yield Based on Source and Sink Characteristics

This research was conducted to determine peanut cultivar differences in sink and source sizes as represented by vegetative growth and yields. Two sets of experiments were conducted at Bogor Agricultural University farms, Sawah Baru and Cikarawang (06o33’, S, 106o45’E, 250 m altitude). Planting was conducted on June 12 and June 20, 2007 using 20 local and national cultivars in each location. Both experiments used randomized complete block design with three replications. Data were analyzed using correlation and regression analysis. Size of experimental unit was 1.6 m x 4.0 m, with planting density 125,000 plants ha-1. Urea, SP36 and KCl were applied at planting date in the rate of (kg ha-1) 45 N, 100 P2O5 and 50 K2O. Four stages of plant growth were studied: 25 days after planting (DAP); 6 weeks after planting (WAP); 10 WAP (pod filling) and 14 WAP (harvest). Five plants were sampled at 25 DAP, two plants at 6 WAP, 10 WAP and 14 WAP, and separated into leaves, stems, roots and pods. The average yield of two experimental stations showed that Biawak cultivar had the highest yield due to relatively higher aboveground dry weight (source), pod filling percentage and maximum number of gynophor+pods (potential sink). Jepara cultivar had the lowest yield due to low pod filling percentage and potential sink, although its source was considered to be in the medium category. Above ground dry weight at 6 and 10 WAP had close relation with Crop Growth Rate (CGR) during 25 DAP-6 WAP and 6-10 WAP, and the higher CGR during those periods were more related to leaf area index than to single leaf photosynthetic capacity. Keywords: crop growth rate, pod filling percentage, leaf area index, single leaf photosynthetic capacity