scholarly journals STABILITAS DAN ADAPTABILITAS HASIL JAGUNG HIBRIDA DR UNPAD DI TIGA LOKASI PADA DUA MUSIM TANAM DI JAWA TIMUR, INDONESIA

Zuriat ◽  
2015 ◽  
Vol 22 (1) ◽  
Author(s):  
R. Aprilianti ◽  
D. Ruswandi ◽  
Anggia E. P. ◽  
Tri Hastini ◽  
A. Suhada ◽  
...  

Study adaptability is an important step to select superior hybrids which have wide adaptability or specific adaptability. Fifhteen of DR Unpad hybrids have purpose to know about stability and adaptability for yield characters (yield ton/ha), ear weight of plot (kg), ear weight of sample (kg), and grain weight of sample (kg) of DR Unpad hybrids in East Java and to determine GxE interaction on two plant seasons for build up superior variety in Indonesia. Three location and each location two seasons, fifhteen hybrids and four tester cultivar were tested and randomized complete block design with three replications. Data were analysis of variance, complete analysis variance, and AMMI. The results indicated that there was GxE interaction  for yield character. Thus, for yield performance, hybrids Var R showed high stability and high yield. Var R, C, and Var G have a wide adaptability for yield. Var C and R had specific  adaptation in marginal location in Sidoarjo  on second season. And hybrids Var F and Var B specific for Ngronggot on second season which that location was a good environment.

2016 ◽  
Vol 96 (1) ◽  
pp. 151-159 ◽  
Author(s):  
Gan Yantai ◽  
K. Neil Harker ◽  
H. Randy Kutcher ◽  
Robert H. Gulden ◽  
Byron Irvine ◽  
...  

Optimal plant density is required to improve plant phenological traits and maximize seed yield in field crops. In this study, we determined the effect of plant density on duration of flowering, post-flowering phase, and seed yield of canola in diverse environments. The field study was conducted at 16 site-years across the major canola growing area of western Canada from 2010 to 2012. The cultivar InVigor® 5440, a glufosinate-resistant hybrid, was grown at five plant densities (20, 40, 60, 80, and 100 plants m−2) in a randomized complete block design with four replicates. Canola seed yield had a linear relationship with plant density at 8 of the 16 site-years, a quadratic relationship at 4 site-years, and there was no correlation between the two variables in the remaining 4 site-years. At site-years with low to medium productivity, canola seed yield increased by 10.2 to 14.7 kg ha−1 for every additional plant per square metre. Averaged across the 16 diverse environments, canola plants spent an average of 22% of their life cycle flowering and another 27% of the time filling seed post-flowering. Canola seed yield had a negative association with duration of flowering and a positive association with the days post-flowering but was not associated with number of days to maturity. The post-flowering period was 12.7, 14.7, and 12.6 d (or 55, 68, and 58%) longer in high-yield experiments than in low-yield experiments in 2010, 2011, and 2012, respectively. We conclude that optimization of plant density for canola seed yield varies with environment and that a longer post-flowering period is critical for increasing canola yield in western Canada.


CERNE ◽  
2015 ◽  
Vol 21 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Manoel Cléber de Sampaio Alves ◽  
Luiz Fernando Frezzatti Santiago ◽  
Marcos Tadeu Tiburcio Gonçalves ◽  
Ivaldo De Domênico Valarelli ◽  
Francisco Mateus Faria de Almeida Varasquim

The present paper aims to evaluate the influence of the factors (belt speed, pressure and grit size) on the output parameters (temperature and surface roughness) for Pinus elliottii wood sanding, processed parallel to the fibers. Three levels of belt speed, three levels of pressure and four levels of grit size were employed, with six replicates for each process, totaling 216 observations. The experiment conducted under a randomized complete block design (RCBD). The results were analyzed employing the analysis of variance (ANOVA) with 5% of significance level. Only grit sizes were significant to different temperature levels. The same outcome was observed for roughness, where only grits sizes were significant. No interaction between the pressure and belt speed factors were observed for all the results analyzed.


Author(s):  
Nasratullah Habibi ◽  
Friba Sikandari

An experiment was conducted to evaluate effect of urea fertilizer on yield and yield components of Zea mays L. Using Randomized Complete Block Design (RCBD) split plots in three replications in agricultural research farm of Balkh University by 2019. Doses of urea used in this experiment were 0, 80, 160 and 240 kg ha-1 , respectively. It has been found that amount of nitrogen fertilizer (urea) had significant effect on yield of maize at p<0.05. The higher level of nitrogen caused the higher grain yield, number of kernels per ear, the number of grains per ear row, ear diameter, cob length, grain per plant and plant height. As a result 7.76 ton ha-1 was recorded as high yield while 240 kg ha-1 urea was used, and 5.12 ton ha-1 was recorded as low yield in treatment one with 0 kg ha-1 of nitrogen fertilizer. Finally, as a result using 240 kg ha-1 nitrogen fertilizer is recommended.


2019 ◽  
Vol 9 (2) ◽  
pp. 66-71
Author(s):  
Arfan ◽  
Ratnawati ◽  
Hasmari Noer ◽  
Lisa Indriani ◽  
Asli ◽  
...  

The purposes of this research the examine the effectiveness various concentrations neem leaf ekstract on the intensity of attack Liriomyza spp on shallot Lembah Palu variety . Field research was carried out in Guntarano Village, Tanantovea Subdistrict, Donggala Regency, Central Sulawesi.  This research conducted from February to April 2016 .The experiment was done using Randomized Complete Block  Design with three replications, consists of six  treatments, i.e. P0 : control (without aplication neem leaf ekstract); P1: neem leaf ekstract 10 gr /litre;  P2 : neem leaf ekstract 20 gr / litre; P3 : neem leaf ekstract 30 gr / litre; P4 : neem leaf ekstract 40 gr / litre; P5 : neem leaf ekstract 50 gr / litre. To find out the effect of threatment, the analysis of variance, and the real influence is continued with the standard  ά = 0.05 BNT test.  The results showed that use of seed and leaf extracts of neem plant can control Liriomyza spp attack, only 3,04 percent of attack rate and shallot Lembah Palu variety productivity is 3,02/area.


2016 ◽  
Vol 9 (1) ◽  
pp. 41-45 ◽  
Author(s):  
SA Chowdhury ◽  
SK Paul ◽  
MAR Sarkar

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to December 2014 with a view to finding out the effect of variety and level of nitrogen on the yield performance of fine aromatic rice. The experiment consisted of three varieties viz. Kalizira, Binadhan-13 and BRRI dhan34, and six levels of nitrogen viz. 0, 30, 60, 90 kg N ha-1, USG 1.8 g 4 hills-1 (55 kg N ha-1) and USG 2.7 g 4 hills-1 (80 kg N ha-1). The experiment was laid out in a randomized complete block design with three replications. Variety, level of nitrogen and their interaction significantly influenced the yield of aromatic rice. The highest grain yield (3.33 t ha-1) was obtained from Binadhan-13 followed by BRRI dhan34 (3.16 t ha-1) and the lowest grain yield was found in Kalizira (2.11 t ha-1). In case of N, the tallest plant (140.3 cm), highest number of effective tillers hill-1 (11.40), grains panicle-1 (152.8), and grain yield (3.32 t ha-1) were obtained when fertilized with USG 1.8 g 4 hills-1 and the lowest values were found in 0 kg N ha-1. Therefore, Binadhan-13 fertilized with USG 1.8 g 4 hills-1 (55 kg N ha-1) appeared as the promising practice for appreciable grain yield.J. Environ. Sci. & Natural Resources, 9(1): 41-45 2016


2017 ◽  
Vol 14 (2) ◽  
pp. 95-112
Author(s):  
M J Hussain ◽  
A J M S Karim ◽  
A R M Solaiman ◽  
M S Islam ◽  
M Rahman

A field experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during 2010-2011 to determine the effects and economic performance of urea super granule (USG) and prilled urea (PU) in terms of growth and yield of broccoli and to find out the optimum and economic doses of USG and PU for broccoli in Shallow Red-Brown Terrace Soil under Madhupur Tract. The experiment was laid out in a randomized complete block design with three replications having 17 treatment combinations constituted with different levels of urea super granule (USG) and prilled urea (PU). Result showed that yield of broccoli increased significantly with increasing rate of USG and PU. The treatments containing 160 kg N from USG and 180 kg N from PU exhibited the best performance on yield and yield contributing characters of broccoli having the head yield of 12.9 and 10.6 ton ha-1, respectively. All the yield contributing characters and the economic profitability were favorably correlated with these high yield performing treatments. The performance of USG in terms of growth, yield and yield attributes, head quality (compactness coefficient) and economic profitability was found significantly higher as compared to that of PU. Therefore, USG @ 160 kg N ha-1 and PU @ 180 kg N ha-1 alongwith other recommended fertilizerscould be suggested for broccoli production in terms of yield and economics. From quadratic equation USG @ 163 and 160 kg N ha-1 and PU @ 169 and 160 kg N ha-1 alongwith other recommended fertilizerscould be suggested as optimum and economic doses for broccoli production in Silty Clay Loam Soil of Madhupur Tract.The Agriculturists 2016; 14(2) 95-112


2019 ◽  
Vol 11 (6) ◽  
pp. 556
Author(s):  
Luara Cristina de Lima ◽  
Renato Aurélio Severino de Menezes Freitas ◽  
Leandro Martins Barbero ◽  
Regina Maria Quintão Lana ◽  
Fernanda Carvalho Basso ◽  
...  

The objective of this work was to evaluate the performance of Urochloa hybrid Convert HD364 applied in different doses as a vegetable biostimulant under grazing simulation in intermittent stocking in the city of Uberl&acirc;ndia, Minas Gerais. The treatments consisted of a control (absence of biostimulant) and in 5 doses of biostimulant, 0.25; 0.5; 0.75; 1.0 and 1.25 L ha-1, in a randomized complete block design with 4 replicates. Productive and qualitative parameters were evaluated. The data were submitted to analysis of variance, using for the comparison of means, the Regression test at 5% of significance. The biostimulant promotes an increase in the accumulation of DM and in the rate of accumulation of forage, leaves and stems of Urochloa hybrid and reduction in the percentage of dead material and the L:S ratio of Urochloa hybrid.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Atman ◽  
Irfan Suliansyah ◽  
Aswaldi Anwar ◽  
Syafrimen Yasin

Cultivation of true shallot seeds has the potential to be developed in Indonesia because apart from being able to reduce the cost of providing seeds, it also has higher productivity than shallot from tubers. This study aims to determine the appearance of true shallot seed varieties that have high yield potential in the highlands of West Sumatra. The study used a randomized complete block design (RCBD) with 4 treatments of true shallot seed varieties, namely, Trisula, Bima, Lokananta, and Sanren, with 6 replications. The results showed that except for the age of harvest and the number of tubers per hill, the treatment of various varieties of true shallot seeds showed a significant effect on all observed variables. Lokananta variety has better growth component, yield component, and yields compared to other varieties (Trisula, Bima, and Sanren). Cultivation of true shallot seeds in the highlands gives lower yields than in the adapted area (lowland), except for the Trisula variety. Lokananta variety is recommended for use in the highlands of West Sumatra.


2018 ◽  
Vol 6 (2) ◽  
pp. 39-45
Author(s):  
Esther T. Akinyode ◽  
Justina B.O. Porbeni ◽  
David K Ojo ◽  
Olufemi O. O. Pitan ◽  
Adenike O. Olufolaji ◽  
...  

African eggplant is an important fruit and leafy vegetable in Africa. Heterosis over mid and better parents was estimated in eight crosses of eggplant involving eight pure lines in a field experiment in 2012 and 2013 cropping seasons. The experiment was laid out using a randomized complete block design with three replications. Collected data was subjected to analysis of variance and significant differences were further subjected to Duncan Multiple Range Test. The aim of this study was to identify superior hybrids that can be advanced in the eggplant breeding program for improved yield and related traits. Significant variation was observed among all traits measured for the parents and hybrids. The highest fruit number was observed in NHS10-40 and in NHS 10-71 x NHS 10-40 among the parents and hybrids respectively. The highest heterosis was recorded in the cross between NHS10-71 x NHS10-40.


Author(s):  
Agung Wahyu Susilo ◽  
Surip Mawardi ◽  
Sudarsianto Sudarsianto

Selection on cocoa resistance to vascular-streak dieback (VSD) has identified some resistant clones for breeding purposes. Of the resistant clones, it was selected Sca 6 and DRC 15 which performing good potential for yield. This paper reports results on testing yield potential of the clones in separate trials. Sca 6 was tested in Kottablater Estate (dry climate in the altitude of ± 25 m asl.) and DRC 15 was tested in Mumbulsari Estate (dry climate in the altitude of ± 45 m asl.) both are in Jember. Trials were arranged in the randomized complete block design with 4 blocks. Evaluation for yield performance was conducted during 6 years of harvest and stability performance was analyzed in regression term using year of harvest as the index. The results indicate the yield potential of the clones was quite similar in the level of 1.4 kg/plant and performing stability during evaluation and good adaptability in the location. The yield potential was lower than the high yielding clones but use of Sca 6 and DRC 15 in heavily infasted VSD area should be considered than using of the susceptible clones. Sca 6 performed low potential on a dry-weight bean in the range of 0.65—0.86 g (class C of quality standard) but better performance could be found in the wet area. DRC 15 performed good potential on a dryweight bean of 1.16 g (class AA of quality standard). Fat content analysis of Sca 6 indicate a better performance of beans which grown up in the wet area (58.2%) than in the dry area (49.6%). It was reported the fat content potential of DRC 15 in the level of 50.4%. Key words: Yield performance, vascular-streak dieback, resistant clone, Theobroma cacao L.


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