scholarly journals Pembentukan Core Collection untuk Sumber Daya Genetik Padi Toleran Kekeringan

2016 ◽  
Vol 17 (2) ◽  
pp. 104
Author(s):  
Tiur S. Silitonga ◽  
Andari Risliawati
Keyword(s):  
Core Collection ◽  
Upland Rice ◽  
Block Design ◽  
Yield Potential ◽  
Plant Spacing ◽  
Plot Size ◽  
Central Java ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Rice Genetic

<p>The Development of Core Collection for Rice Genetic Resources Tolerant to Drought. The experiment was conducted in dry season, July-September 2009 at the research farm in Jakenan, Central Java and planted in randomized block design (RBD) arrangement by using 150 accessions with the plot size of 5 m x 1 m, with plant spacing 25 cm x 20 cm and three replications. Another experiment used as control and grown as upland rice without drought stresses by watering twice in a week was planted in RBD arrangement with two replications, plot size 5 m x 1 m and spacing 25 cm x 20 cm. The results showed that 26 varieties were selected for sub core collection for drought tolerance. Jatiluhur and B.9645-E-Mr-89 had the highest yield potential respectively 3,88 dan 3,77 t/h. All of the varieties with tolerant to drought were selected for core collection. This would be very important as they could be directly grown by farmers as tolerant varieties or used as sources of gene in the breeding program to improve varieties for drought tolerant with high yielding potential.</p><p> </p><p><strong>Abstrak</strong></p><p>Pembentukan core collection untuk sumber daya genetik padi toleran kekeringan. Penelitian dilaksanakan pada musim kemarau, Juli-September 2009 di Kebun Penelitian Balai Penelitian Lingkungan Pertanian Jakenan, Jawa Tengah, dengan rancangan acak kelompok, tiga ulangan, menggunakan 150 aksesi yang ditanam pada petak berukuran 5 m x 1 m. Tanaman disiram setiap tiga hari sekali sampai tumbuh baik dan setelah berumur 25 hari tanaman mulai dikeringkan. Sebagai petak pembanding adalah tanaman padi gogo biasa yang disiram setiap dua seminggu sekali sampai panen. Pertanaman pembanding ditanam dengan jarak 25 cm x 20 cm. Dari penelitian ini terpilih 26 varietas toleran kekeringan dengan skor 1-5. Di antara aksesi ini terdapat varietas yang berumur genjah dan sedang (115-135 hari), sehingga waktu panennya agak berbeda. Varietas Jatiluhur dan galur B.9645- E-Mr-89 mempunyai potensi hasil paling tinggi, masingmasing 3,88 dan 3,77 t/ha dan toleran terhadap kekeringan. Aksesi yang toleran terhadap kekeringan terutama yang mempunyai potensi hasil tinggi, dapat langsung digunakan oleh petani atau sebagai sumber gen dalam perakitan varietas unggul toleran kekeringan dan berpotensi hasil tinggi.</p>

scholarly journals Evaluation of Short Duration Drought Tolerant Rice Varieties in Drought Prone Areas of Subarnapur District of Odisha

2020 ◽  
pp. 21-26
Author(s):  
S. Pradhan ◽  
F. H. Rahman ◽  
S. Sethy ◽  
G. Pradhan ◽  
J. Sen
Keyword(s):  
Short Duration ◽  
Upland Rice ◽  
Plant Protection ◽  
Block Design ◽  
Rice Variety ◽  
Rice Varieties ◽  
Agronomic Practices ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Sowing Seed

A study was conducted in farmer’s field through technology demonstrations during Kharif season of 2018 and 2019 in Subarnapur district of Odisha to recommend the most suited short duration drought tolerant upland rice variety particular to the locality. Six different varieties like Sahabhagi dhan, Mandakini, Jogesh, DRR-44, and DRR-42 & Khandagiri were taken with four replications in Randomized Block Design in both years. Technology demonstration included not only the improved short duration varieties, but also a package of good agronomic practices viz. line sowing, seed treatment with Bavistin, proper fertilization with dose @ 80:40:40 NPK/ha, pre emergence herbicide application with pretilachlor, needful manual weeding and  need based plant protection chemicals. The results of demonstration showed that farmers could increase rice productivity notably by adopting improved variety Sahabhagi dhan and DRR-44. These varieties recorded higher grain yields of 64% and 46%, respectively, and fetched a sum return of Rs 25620 and Rs 25275 over farmers’ local variety Khandagiri.

scholarly journals Penampilan Beberapa Klon Bawang Merah dan Hubungannya dengan Intensitas Serangan Organisme Pengganggu Tumbuhan

2016 ◽  
Vol 22 (4) ◽  
pp. 349
Author(s):  
Sartono Putrasamedja ◽  
Wiwin Setiawati ◽  
L Lukman ◽  
Ahsol Hasyim
Keyword(s):  
Spodoptera Exigua ◽  
Colletotrichum Gloeosporioides ◽  
Block Design ◽  
Yield Potential ◽  
Pests And Diseases ◽  
Central Java ◽  
Randomized Block Design ◽  
Action Threshold ◽  
Alternaria Porri ◽  
New Varieties

<p>Perkembangan varietas-varietas bawang merah di suatu daerah ditentukan oleh keserasian dengan lingkungan, potensi hasil, toleransi terhadap serangan organisme pengganggu tumbuhan (OPT), serta umur dan mutu hasil. Penelitian bertujuan untuk menguji penampilan beberapa klon bawang merah dan hubungannya dengan intensitas serangan OPT penting. Penelitian dilaksanakan di Brebes dan Tegal (Jawa Tengah) dari Bulan Juni sampai dengan September 2011. Perlakuan yang diuji ialah 10 klon bawang merah hasil silangan tahun 2004 dan 2005, serta dua varietas bawang merah sebagai pembanding (Bauji dan Bima Brebes). Rancangan percobaan yang digunakan ialah acak kelompok dan diulang tiga kali. Parameter yang diamati ialah pertumbuhan tanaman (tinggi tanaman, jumlah daun, dan jumlah anakan), hasil panen, dan serangan OPT penting. Hasil penelitian menunjukkan bahwa klon no. 2005/1 dapat beradaptasi dengan baik di Brebes dan Tegal, mampu menghasilkan produksi tertinggi masing-masing sebesar 9,95 dan 17,50 t/ha, mempunyai diameter umbi terbesar (1,87 dan 2,41 cm), bentuk umbi bulat, dan berwarna merah tua, sedangkan klon no. 2004/11 mempunyai pertumbuhan dan  produktivitas yang tinggi, relatif toleran terhadap serangan Spodoptera exigua, Alternaria porri, dan Colletotrichum gloeosporioides, diameter umbi (1,67 dan 1,96 cm), bentuk umbi bulat,  dan berwarna merah tua, sedangkan klon no. 2004/10 dan no. 2005/19 sangat rentan terhadap serangan hama S. exigua, penyakit A. porri, dan C. gloeosporioides. Klon-klon yang mempunyai tingkat serangan rendah/toleran terhadap OPT merupakan klon harapan bawang merah toleran/tahan OPT. Namun demikian, penggunaan pestisida sesuai dengan konsep pengendalian hama terpadu (PHT) masih tetap diperlukan terutama apabila serangan OPT tersebut mencapai ambang pengendalian yang ditetapkan.</p><p> </p><p>The development of shallots varieties in one location depends on the genetic adaptability, yield potential,  tolerance to pest and diseases, harvest date, yield and quality. The aim of study was to evaluate 10 clones and two local clones as check, Bima Brebes and Bauji were conducted in Brebes and Tegal (Central Java) from June to September 2011. The trial were laid out in a completely randomized block design and each treatment was replicated three times. The parameters used for evaluating these clones were plant height, no. of sprout,  no. of leaves, yield and pests and diseases incidence. The results showed that considering overall performance, clone no. 2005/1 gave the highest yield (9.95 and 17.50 t/ha), and diameter of bulb (1.87 and 2.41 cm) in Brebes and Tegal respectively, clone no. 2004/11 produced growth and good yield  and showed tolerance to Spodoptera exigua, Alternaria porri, and Colletotrichum gloeosporioides, bulb diameter (1.67 and 1.96 cm) with dark red color,  while clone no. 2004/10 and no. 2005/19 were identified as the most susceptible clones to S. exigua, A. porri, and C. gloeosporioides. This suggests that some of shallots clones could be good candidates for the new varieties of shallots. However, the use of pesticides in IPM concept were still needed especially if the incidence of pests and diseases reach the action threshold.</p>

scholarly journals ADAPTASI KLON-KLON RAMI DI ANTARA KELAPA

2020 ◽  
Vol 11 (4) ◽  
pp. 140
Author(s):  
UNTUNG SETYO BUDI ◽  
RR. SRI HARTATI ◽  
RULLY D. PUR WATT PUR WATTI
Keyword(s):  
Block Design ◽  
Research Result ◽  
Dry Weight ◽  
Organic Manure ◽  
Plant Spacing ◽  
West Java ◽  
Land Preparation ◽  
Plot Size ◽  
Boehmeria Nivea ◽  
Randomized Block Design

<p>ABSTRAK<br />Penelitian untuk mendapatkan klon-klon unggul rami untuk lahan di<br />antara pohon kelapa, telah dilaksanakan pada bulan April 1999 - Maret<br />2000, di lahan kebun plasma PIR-Kelapa 5 (NES 5) Desa Mekarsari,<br />Kecamatan Cimerak, Kabupaten Ciamis, Jawa Barat. Tanaman kelapa<br />hibrida ditanam pada tahun 1993/1994 dengan jarak tanam 9 m x 9 m, dan<br />sudah berproduksi. Perlakuan terdiri dari 12 klon rami yang disusun dalam<br />rancangan acak kelompok dan diulang 3 kali. Klon-klon tersebut adalah<br />Pujon 10, Pujon 13, Bandung A, Pujon 9, Pujon 902, Indochina, Kotaraja,<br />Japan I, Hakuki, Padang 3, Jawa Timur 3-0 dan Pujon 601. Bibit/rhizoma<br />ditanam dengan jarak tanam 50 cm x 80 cm satu stek per lubang, pada plot<br />berukuran 4 m x 9 m. Kapur dan pupuk kandang diberikan bersamaan<br />dengan pengolahan tanah dengan dosis masing-masing 2 ton dan 20 ton<br />per hektar. Sedangkan pupuk buatan diberikan pada 10 hari setelah tanam<br />dengan dosis 200 kg urea + 150 kg SP-36 + 100 kg KC1 per hektar.<br />Pemupukan selanjutnya dilakukan 7-10 hari setiap sehabis panen/pangkas<br />dengan dosis yang sama. Panen pertama dilakukan pada 70 HST,<br />sedangkan panen berikutnya setiap dua bulan sekali. Pengamatan pada<br />sebelum dan sesudah panen dilakukan terhadap tinggi tanaman, diameter<br />batang, jumlah anakan per rumpun, bobot brangkasan segar, bobot batang<br />segar dan bobot kering china grass. Hasil penelitian menunjukkan bahwa<br />klon Pujon 10, Pujon 13, Padang 3, Bandung A dan Indochina merupakan<br />klon-klon yang memiliki daya adaptasi tinggi di lahan antara pohon kelapa<br />di Ciamis sampai dengan panen ke empat.<br />Kata kunci: Rami, Boehmeria nivea L. Gaud, adaptasi, kebun kelapa,<br />tanaman sela, Jawa Barat</p><p><br />ABSTRACT<br />Adaptation of ramie clones in coconut plantation<br />An experiment to find out the promising clones of ramie in coconut<br />plantation in Mekarsari, Cimerak,West Java from April 1999 to March<br />2000. Coconut trees in the experiment location were planted in 1993/1994<br />with plant spacing 9 x 9 m and have already producted. Twelve rami<br />clones viz. Pujon 10, Pujon 13, Bandung A, Pujon 9, Pujon 902,<br />Indochina, Kotaraja, Japan I, Hakuki, Padang 3, Jawa Timur 3-0 and Pujon<br />601, was evaluated using Randomized Block Design (RBD) with three<br />replications. Rami rhizome was planted in 4 m x 9 m plot size with 50 cm<br />x 80 cm plant spacing and one rhizome per hole. Lime (2 ton/ha) and<br />organic manure (20 ton/ha) were applied during land preparation. Organic<br />fertilizers were applied 10 days after planting 200 kg urea •+• 150 kg SP-36<br />+ 100 kg KC1 per hectare. The next fertilizing was conducted 7 - 10 days<br />every after harvest with the same doses. The first harvesting time was 70<br />days after planting and the folowing harvests were conducted every two<br />months. Parameters observed were plant height, stem diameter, plant<br />number per scrub, fresh wight biomass, stem fresh wight and chinagrass<br />dry weight. Research result indicated that ramie clones viz. Pujon 10,<br />Pujon 13, Padang 3, Bandung A, and Indochina, were more adaptable in<br />coconut plantation in Ciamis, West Java, up to the fourth harvest.<br />Ramie, Boehmeria nivea L. Gaud, adaptation, cocon<br />plantation, intercrop, West Java</p>

scholarly journals Growth and yield of new hybrid rice in irrigated and rain-fed lowlands

2020 ◽  
Author(s):  
La Ode Afa ◽  
Bambang S. Purwoko ◽  
A. Junaedi ◽  
Oteng Haridjaja ◽  
Iswari S. Dewi
Keyword(s):  
Hybrid Rice ◽  
Block Design ◽  
Growth And Yield ◽  
Yield Potential ◽  
High Yield ◽  
Severe Drought ◽  
Early Maturity ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Rice Genotypes

Two experiments were conducted at (i) irrigated lowland, village of Bojong, Cikembar, Sukabumi Sub-district, Indonesia, from November 2011 to February 2012, and (ii) rain-fed lowland, village of Sanca, Gantar sub-district, Indramayu, Indonesia, from April to July 2012. The objective of the experiment was to determine the yield of drought-tolerant hybrid rice genotypes. A randomized block design with three replications was used. The treatment consisted of 8 hybrid rice genotypes (BI485A/BP3, BI485A/BP5, BI485A/BP10, BI485A/BP12, BI485A/BP15, BI599A/BP5, BI599A/BP15 and BI665A/BP6) and 2 check varieties (Hipa 7 and Ciherang) for the experiment in irrigated lowland, 4 hybrid genotypes (BI485A/BP3, BI485A/BP12, BI485A/BP15 and BI599A/BP15) and 3 check varieties (Hipa 7, IR64 and Limboto) for the experiment in rain-fed lowland. On irrigated lowland, all tested-genotypes produced grain yield per hectare, which was not significantly different from the check varieties Ciherang and HIPA 7. The yield of genotype BI485A/BP12, BI485A/BP15 and BI559A/BP15 under irrigated lowland showed non-significant different with check varieties Ciherang and Hipa 7, i.e 5.63, 6.87, and 6.30 tons ha-1, respectively. Genotype BI599A/BP15 under severe drought rain-fed lowland yielded 0.90 tons of grain ha-1, whereas Hipa 7 (hybrid variety, suitable for rain-fed lowland) and Limboto (drought-tolerant check variety) reached 0.34 and 0.29 tons ha-1, respectively. Genotype BI599A/BP15 is a new hybrid genotype that potential for advanced development in rain-fed lowland and in irrigated lowland with a high yield potential and quiet early-maturity age.

scholarly journals Genetic Diversity and Agromorphological Characteristics of 50 Upland Rice Genotypes Derived from Recurrent Selection

Akta Agrosia ◽  
2018 ◽  
Vol 21 (2) ◽  
pp. 33-40
Author(s):  
Sahri Yono ◽  
Reny Herawati ◽  
Hesti Pujiwati
Keyword(s):  
Genetic Diversity ◽  
Recurrent Selection ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
Morphological Characters ◽  
Yield Potential ◽  
High Yield ◽  
Panicle Length ◽  
Randomized Block Design

Rice (Oryza sativa L.) is the most important crops commodity in Indonesia because it is the main staple for the people of Indonesia but currently,  in Indonesia, the production of rice is still not maximal so it can not meet the demand of Indonesian people for national food needs. Therefore, it is necessary for rice plants that have high production and tolerant to various stresses. Plant breeding  is one of the ways that can be done to increase the production of rice, one of which is the method of cross-recurring selection. Genetic diversity is a variation of characteristics that are inherited in the same species population. This study aims to obtain information about genetic diversity and agro-morphological characters of 50 genotypes rice derived from the recurrent selection. This research was conducted from August until December 2017 in Rawa Makmur Village, Bengkulu Province with the height of place from sea level ± 2 m. The study used a Completely Randomized Block Design (RAK) with 3 replications. The seeds used were 50 genotypes of rice from previous cross-selection results from Bugis/N-22 crossbreeds, Bugis/IR-7858-1, Sriwijaya/N-148, Sriwijaya/IR-7858-1. The results showed that the genetic diversity of rice is quite narrow to moderate, but there are some rice characters that have medium to high heritability value that was plant height, harvesting age, flowering age, the total number of tillers and panicle length, so that character can be used for the next generation rice selection. The genotypes produced by Bugis/IR-7858-1 crosses have panicle length, filled grain per panicle, and high grain weight/hill resulting in high yield potential.

scholarly journals STABILITAS HASIL LIMA NOMOR HARAPAN KENCUR

2020 ◽  
Vol 12 (4) ◽  
pp. 140
Author(s):  
OTIH ROSTIANA ◽  
WAWAN HARYUDIN ◽  
ROSITA SMD SMD
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Block Design ◽  
Fertilizer Application ◽  
Plant Spacing ◽  
Materia Medica ◽  
Plot Size ◽  
Yield And Quality ◽  
Kaempferia Galanga ◽  
Randomized Block Design

ABSTRAK<br />Tujuan pemuliaan kencur diarahkan untuk meningkatkan produksi<br />rimpang dan kandungan mutu utama yang sesuai dengan standar yang<br />ditetapkan oleh Materia Medika Indonesia, dalam upaya meningkatkan<br />pendapatan usahatani. Hasil seleksi berdasarkan produksi dan mutu<br />rimpang terhadap aksesi plasma nutfah yang terkumpul, terpilih 5 nomor<br />dengan rata-rata produksi rimpang &gt; 40 g/rumpun dan kadar minyak atsiri<br />&gt; 1,5%, yaitu V1, V2, V3, V4 dan V5. Kelima nomor diuji multilokasi di 5<br />lokasi pada 2 musim tanam (tahun 2002/2003 dan 2003/2004). Kelima<br />lokasi tersebut adalah: Cileungsi (80 m dpl.) dan Cijeruk (650 m dpl.)<br />(Bogor), Subang (80 m dpl), Sumedang (550 m dpl) dan Sukamulya (350<br />m dpl.) (Sukabumi). Pengujian menggunakan rancangan acak kelompok<br />dengan 6 ulangan, jarak tanam 20 x 20 cm, ukuran petak 4 x 1 m 2 ,<br />populasi tanaman per petak 100. Dari hasil pengujian diperoleh nomor<br />yang menghasilkan rata-rata bobot rimpang tertinggi yaitu V4 (53,58<br />g/rumpun atau setara dengan 10,7 ton/ha), rata-rata kadar minyak atsiri<br />tertinggi (6,64%) dan beradaptasi secara spesifik pada lingkungan tumbuh<br />yang sama dengan lokasi penanaman di Cijeruk, Sumedang dan Suka-<br />mulya. Sedangkan V2 dengan nilai diameter rimpang terbesar (2,089 cm),<br />stabil di 4 lokasi pengujian, responsif terhadap pemupukan, serta V3<br />dengan rata-rata produksi rimpang 51,98 g/rumpun atau setara dengan 10,4<br />ton/ha, beradaptasi secara spesifik pada lingkungan tumbuh yang sama<br />dengan lokasi penanaman kencur di Cileungsi, Cijeruk dan lokasi asalnya<br />di Sumedang.<br />Kata kunci : Kencur, Kaempferia galanga L., varietas unggul, stabilitas<br />hasil, spesifik lokasi, Jawa Barat<br />ABSTRACT<br />Stability of five promissing Galanga lines production<br />Breeding of Galanga was focused on the improvement of rhizome<br />yield and quality based on the Indonesian Materia Medica Standard, to<br />increase farmers’ income. Based on the selection on rhizome yield and<br />quality, 5 accession numbers were selected as promising lines for their<br />high rhizome yield (&gt;40 g/tiller) and essential oil contents (&gt; 1.5%), e.g.<br />V1, V2, V3, V4 and V5. All numbers were subjected to multilocation tests<br />at 5 locations, e.g. Cileungsi (80 m asl) and Cijeruk (650 m asl) (Bogor),<br />Subang (80 m asl), Sumedang (550 m asl) and Sukamulya (350 m asl)<br />(Sukabumi), for 2 planting-seasons (2002/2003 and 2003/2004). Experi-<br />ments were arranged in a randomized-block design, with 6 replications,<br />plant spacing 20 cm x 20 cm, plot size of 4 x 1 m2, and population 100<br />plants/plot. The research results showed that the highest average of<br />rhizome yield was performed by V4 (53.58 g/tiller, equal to 10.7 t/ha),<br />with essential oil content 6.64% and specifically adaptable to the same<br />agro-climate as the environment conditions at Cijeruk (Bogor), Sumedang<br />and Sukamulya (Sukabumi). Meanwhile, V2 with the highest diameter of<br />rhizome (2,089 cm), stable at 4 out of 5 locations and responsive to<br />fertilizer application. On the other hand, V3 with the average of rhizome<br />yield 51.98 g/tiller, equal to 10.4 t/ha, specifically adaptable to the agro-<br />climate similar to the environment conditions at Cileungsi, Cijeruk<br />(Bogor) and its native, Sumedang.<br />Key words: Kaempferia galanga L., superior variety, yield stability,<br />specific location, West Java

scholarly journals Pengaruh Macam Tanaman Sela Terhadap Pertumbuhan Dan Hasil Jarak Pagar (Jatropha curcas L.) Hasil Rehabilitasi Tahun Ketiga

2016 ◽  
Vol 5 (2) ◽  
pp. 69
Author(s):  
Sri Mulyaningsih ◽  
Budi Hariyono
Keyword(s):  
Land Use ◽  
Seed Yield ◽  
Block Design ◽  
Growth And Yield ◽  
Research Station ◽  
Physic Nut ◽  
Plot Size ◽  
Central Java ◽  
Randomized Block Design ◽  
Plant Produce

<p>Pada pertanaman jarak pagar yang masih muda (umur 1–2 tahun) dengan jarak tanam 2 m x 2 m ada lahan kosong yang tidak termanfaatkan. Upaya optimalisasi pemanfaatan lahan adalah menanam tanaman sela, sehingga petani mempunyai pendapatan dari tanaman sela sebelum jarak pagar menghasilkan. Penelitian ini bertujuan untuk mengetahui pengaruh tanaman sela terhadap pertumbuhan dan hasil jarak pagar dan men-dapatkan macam tanaman sela yang sesuai pada jarak pagar hasil rehabilitasi (penyambungan) pada tahun ketiga. Penelitian dilaksanakan di Kebun Percobaan Muktiharjo, Kabupaten Pati, Jawa Tengah mulai bulan Januari hingga Desember 2011, menggunakan rancangan acak kelompok diulang enam kali. Perlakuan yang diuji adalah: 1) jarak pagar + kacang tanah, 2) jarak pagar + kedelai, 3) jarak pagar + kacang hijau, 4) jarak pagar + wijen, dan 5) jarak pagar tanpa tanaman sela. Ukuran petak 8 m x 8 m, jarak tanam jarak pagar 2 m x 2 m. Jarak tanam tanaman sela kacang tanah, kedelai, dan kacang hijau masing-masing 25 cm x 25 cm, sedangkan jarak tanam wijen 50 cm x 25 cm. Hasil penelitian menunjukkan bahwa hasil biji kering tanaman jarak pagar dengan tanaman sela kedelai, kacang hijau, dan wijen tidak berbeda nyata dengan hasil biji kering jarak pagar monokultur kecuali dengan kacang tanah. Hasil biji kering jarak pagar + kedelai 655,87 kg/ha + 1.316,07 kg/ha; jarak pagar + kacang hijau 644,70 kg/ha + 1.557,5 kg/ha; jarak pagar + wijen 511,49 kg/ha + 1.416,67 kg/ha; jarak pagar + kacang tanah yaitu 358,31 kg/ha + 1.015,28 kg/ha; dan hasil biji kering tanaman jarak pagar tanpa tanaman sela 602,27 kg/ha. Tumpang sari jarak pagar dengan keempat macam tanaman sela (kacang tanah, kedelai, kacang hijau, dan wijen), efisien dalam pemanfaatan lahan dan layak secara ekonomi untuk ditanam dan dikembangkan bersama dengan tanaman jarak pagar rehabilitasi tahun ketiga dengan nilai NKL masing-masing: 1,32; 1,64; 1,98; 1,72 dan B/C ratio 4,79; 1,88; 5,71; 7,03.</p><p> </p><p>In young jatropha plantation (1–2 years aged) with 2 m x 2 m spacing there is fallow land. The effort to optimize of land use was by planting intercrops, so that the farmers get income before the jatropha plant produce. This study aimed to determine the effect of intercrops on growth and yield of jatropha and get suitable intercrops in the jatropha rehabilitated plantation (by grafting) in the third year. Research was conducted at Muktiharjo Research Station, Pati, Central Java from January to December 2011. The experiment was arranged in randomized block design with 6 replications. Treatments were 1) intercropping physic nut + peanut, 2) intercropping physic nut + soybean, 3) intercropping physic nut + mungbean, 4) intercropping physic nut + sesame, and 5) physic nut monoculture. Plot size was 8 m x 8 m, plant distance of physic nut were 2 m x 2 m, and plant distances for peanut, soybean, and mungbean were 25 cm x 25 cm and for sesame was 50 cm x 25 cm. Result showed that intercropping was not significantly effect on seed yield of physic nut, however intercropping physic nut with peanut decreased the physic nut seed yield. Seed yield of intercropping physic nut + soybean 655.87 kg/ha + 1,316.07 kg/ha; physic nut + mungbean 644.70 kg/ha + 1,557.55 kg/ha; physic nut + sesame 511.49 kg/ha + 1,416.67 kg/ha; physic nut + peanut 358.31 kg/ha + 1,015.28 kg/ha; and physic nut monoculture 602.27 kg/ha. Intercropping physic nut with four kinds of intercrop plant (peanut, soybean, mungbean, and sesame), efficient land use and economically viable for the grown and developed along with physic nut rehabilitation third year with the value of each land equi-valent ratio (LER) 1.32; 1.64; 1.98; 1.72 intercropping and B/C ratio 4.79; 1.88; 5.71; and 7.03.</p>

scholarly journals Can Sustained Deficit Irrigation Save Water and Meet the Quality Characteristics of Mango?

Agriculture ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 448
Author(s):  
Leontina Lipan ◽  
Aarón A. Carbonell-Pedro ◽  
Belén Cárceles Rodríguez ◽  
Víctor Hugo Durán-Zuazo ◽  
Dionisio Franco Tarifa ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Deficit Irrigation ◽  
Block Design ◽  
Water Productivity ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Peel Color

Mango is one of the most cultivated tropical fruits worldwide and one of few drought-tolerant plants. Thus, in this study the effect of a sustained deficit irrigation (SDI) strategy on mango yield and quality was assessed with the aim of reducing irrigation water in mango crop. A randomized block design with four treatments was developed: (i) full irrigation (FI), assuring the crop’s water needs, and three levels of SDI receiving 75%, 50%, and 33% of irrigation water (SDI75, SDI50, and SDI33). Yield, morphology, color, titratable acidity (TA), total soluble solids (TSS), organic acids (OA), sugars, minerals, fiber, antioxidant activity (AA), and total phenolic content (TPC) were analyzed. The yield was reduced in SDI conditions (8%, 11%, and 20% for SDI75, SDI50, and SDI33, respectively), but the irrigation water productivity was higher in all SDI regimes. SDI significantly reduced the mango size, with SDI33 generating the smallest mangoes. Peel color significantly changed after 13 days of ripening, with SDI75 being the least ripe. The TA, AA, and citric acid were higher in SDI75, while the TPC and fiber increased in all SDI levels. Consequently, SDI reduced the mango size but increased the functionality of samples, without a severe detrimental effect on the yield.

scholarly journals Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname

2017 ◽  
Vol 47 (3) ◽  
pp. 185-194 ◽  
Author(s):  
Adriano Stephan NASCENTE ◽  
Ruby KROMOCARDI
Keyword(s):  
Grain Yield ◽  
Management Practices ◽  
Upland Rice ◽  
Block Design ◽  
Field Trials ◽  
Application Rate ◽  
Rice Grain ◽  
Rice Varieties ◽  
Local Conditions ◽  
Randomized Block Design

ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.

scholarly journals Yield performance of upland rice cultivars at different rates and times of nitrogen application

2012 ◽  
Vol 36 (2) ◽  
pp. 475-483 ◽  
Author(s):  
José Hildernando Bezerra Barreto ◽  
Ismail Soares ◽  
José Almeida Pereira ◽  
Antonio Marcos Esmeraldo Bezerra ◽  
José Aridiano Lima de Deus
Keyword(s):  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
N Fertilization ◽  
Rice Cultivars ◽  
Nitrogen Application ◽  
N Application ◽  
Yield Performance ◽  
Randomized Block Design ◽  
N Rates

Nitrogen is the most important nutrient for rice (Oryza sativa L) yields. This study aimed to evaluate the response of upland rice cultivars to N rate and application times in a randomized block design, in subdivided plots with four replications. The studied factors were five rice cultivars (BRS MG Curinga, BRS Monarca, BRS Pepita, BRS Primavera, and BRS Sertaneja), three application times (100 % at planting, 50 % at planting - 50 % at tillering and 100 % at tillering) and four N rates (0, 50, 100, and 150 kg ha-1). All cultivars responded to increased rates and different times of N application, especially BRS Primavera and BRS Sertaneja, which were the most productive when 50 % N rates were applied at sowing and 50 % at tillering. The response of cultivar BRS Monarca to N fertilization was best when 100 % of the fertilizer was applied at tillering.

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