scholarly journals Comparison of Yielding Ability, Yield Component and Harvest Index in New Rice Varieties Bred for Cold Climate Regions.

1999 ◽  
Vol 68 (2) ◽  
pp. 235-244 ◽  
Author(s):  
Eiki KURODA ◽  
Naokuni HIGASHI ◽  
Takashi OKADA ◽  
Shin ABE ◽  
Mitsugu HIRANO ◽  
...  
Keyword(s):  
Harvest Index ◽  
Yield Component ◽  
Cold Climate ◽  
Rice Varieties ◽  
Yielding Ability

scholarly journals Evaluating Genotype × Environment Interactions of Yield Traits and Adaptability in Rice Cultivars Grown under Temperate, Subtropical and Tropical Environments

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 558
Author(s):  
Xing Huang ◽  
Su Jang ◽  
Backki Kim ◽  
Zhongze Piao ◽  
Edilberto Redona ◽  
...  
Keyword(s):  
Yield Component ◽  
Yield Potential ◽  
High Yield ◽  
Environment Interaction ◽  
Accurate Identification ◽  
Rice Varieties ◽  
Panicle Number ◽  
Tropical Conditions ◽  
Component Traits ◽  
Yield Component Traits

Rice yield is a complex trait that is strongly affected by environment and genotype × environment interaction (GEI) effects. Consideration of GEI in diverse environments facilitates the accurate identification of optimal genotypes with high yield performance, which are adaptable to specific or diverse environments. In this study, multiple environment trials were conducted to evaluate grain yield (GY) and four yield-component traits: panicle length, panicle number, spikelet number per panicle, and thousand-grain weight. Eighty-nine rice varieties were cultivated in temperate, subtropical, and tropical regions for two years. The effects of both GEI (12.4–19.6%) and environment (23.6–69.6%) significantly contributed to the variation of all yield-component traits. In addition, 37.1% of GY variation was explained by GEI, indicating that GY performance was strongly affected by the different environmental conditions. GY performance and genotype stability were evaluated using simultaneous selection indexing, and 19 desirable genotypes were identified with high productivity and broad adaptability across temperate, subtropical, and tropical conditions. These optimal genotypes could be recommended for cultivation and as elite parents for rice breeding programs to improve yield potential and general adaptability to climates.

scholarly journals COMPARISON OF YIELD AMONG DIFFERENT HIGH YIELDING VARIETIES OF WETLAND RICE

Agric ◽  
2021 ◽  
Vol 33 (1) ◽  
pp. 57-66
Author(s):  
Kiki Kusyaeri Hamdani ◽  
Yati Haryati
Keyword(s):  
Yield Components ◽  
Block Design ◽  
Yield Component ◽  
Yield Potential ◽  
Duncan Multiple Range Test ◽  
Rice Varieties ◽  
Randomized Complete Block Design ◽  
High Yielding Varieties ◽  
Range Test ◽  
Better Than

New superior varieties (VUB) are a reliable technological innovation to increase rice productivity. This study aims to determine the yield potential of some lowland rice VUB. The assessment was carried out on land owned by a member of the Sumber Rejeki Farmer Group, Cintaratu Village, Lakbok District, Ciamis Regency at Dry Season II in June-September 2020. The study used a randomized complete block design (RCBD) with six varieties of treatment and was repeated ten times. The varieties tested were Inpari 32, Inpari 42, Padjadjaran, Cakrabuana, Inpari IR Nutrizinc, and Siliwangi varieties. The variables observed included the growth component, yield component, and yield component. Data were analyzed using the F test followedby the Duncan Multiple Range Test at the Q=5% level. In addition, a correlation test was conducted between the growth components, yield components, and yields. The results of the study indicated that the new superior rice varieties studied had different performance in growth, number of tillers, yield, and yield components. Inpari 42 variety produced the highest productivity, namely 6.88 ton ha-1 which was supported by the number of grains per panicle, percentage of filled grains per panicle, and percentage of empty grain per panicle which were better than other varieties. Plant height and number of grains per panicle were positively correlated with yield.

scholarly journals STUDIES ON INCREASED PLANT POPULATION OF DIFFERENT VARIETIES OF MAIZE (Zea mays L) IN YOLA AND MUBI, ADAMAWA STATE, NIGERIA

2019 ◽  
Vol 7 (4) ◽  
pp. 14-36
Author(s):  
Mamudu Njodi ◽  
Mohammed D. Toungos ◽  
Mu’azu Babayola ◽  
Hassan Kashim
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Harvest Index ◽  
Yield Component ◽  
Plant Population ◽  
Cropping Season ◽  
Maize Varieties ◽  
Significant Difference ◽  
Main Plot ◽  
Number Of Leaves

Field experiment were conducted at Yola and Mubi locations to study the effects of increased plant population of five (5) varieties of maize Viz:  SAMMAZ 11, SAMMAZ  14, SAMMAZ 15, SAMMAZ 16, and SAMMAZ 17 on yield and yield component during the 2011 cropping season. The experimental design was a split plot design with maize varieties as the main plot treatments, while plant population, (53,333, 63,333, 80,000 and 106,666) as the sub-plot treatments. The treatment were replicated three (3) times. Characters measured included plant height, number of leaves per plant, number of days to 50% tasseling, number of day to 50 % silking, days to 95% maturity, number of ear per plant, stem diameter, length of ear, diameter of ear, number of grains per ear, 100 grain weight, number of grains per ear. Yield per plot and total grain yield per hectare. The result of the experiments showed that there was significant difference due to varietal effect in plant height at 3 WAS in Yola and at 7 WAS and 9 WAS in Mubi. Variety also affects days to 50% tasseling, days to 50% silking and days to 95% maturity at both locations. Variety also affects ear length at both locations. Interaction of variety and population affected harvest index in Mubi. Population significantly affected yield per plant, yield per plot, total grain yield per hectare in both locations. Combined analysis result showed highly significant effect due to location on plant height at 3 and 5 WAS and also due to variety. Location also affected number of leaves per plant significantly at 3WAS and highly significantly at 5, 7, 9 and 11 WAS. Varieties affected number of leaves per plant at 5 and 9 WAS and was highly significant at 11 WAS.  Location and varieties affected days to 50% tasseling, days to 50 % silking and days to 95% maturity, while population only affected days to 50% silking. Diameter of ear and harvest index was highly significant by location and on number of grains per row. Varieties also showed significant differences in length of ear. Location affected straw weight per plant, while varieties affected yield per plant and yield per plot, weight of 100 grain yield and total grain yield per hectare was also highly significantly affected. Population affected yield per plant, especially the ones in Yola. Straw weight, total grain yield and weight of 100 grain were significantly affected. SAMMAZ 15 which gave a plant population of 106,666 ha-1 is recommended at both locations.

scholarly journals Response of transplanted aman rice varieties to split application of potassium

2018 ◽  
Vol 5 (3) ◽  
pp. 313-320
Author(s):  
Israt Jahan ◽  
Sarder Md Altaf Hossain ◽  
Md Anwarul Islam ◽  
Joynulalam Talukder
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Harvest Index ◽  
Experimental Plot ◽  
Split Application ◽  
Rice Varieties ◽  
Straw Yield ◽  
Plot Size ◽  
Biological Yield ◽  
Equal Split

The research was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, to investigate the effect of time of split application of potassium on the yield of three transplanted (T) aman rice varieties. Rice varieties were BRRI dhan39, BRRI dhan40 and BRRI dhan41. Potassium was applied at the rate of 80 kg K ha-1. Experimental plot size was 5m2 (2.5m ×2.0m). Four split application of potassium [K1= Control (No K application), K2= 40 g K plot-1 at 15 DAT (days after transplanting), K3= 20 g K plot-1 at15 DAT+20 g K plot-1 at 30DAT, K4= 10 g K plot-1 at 15 DAT+ 10 g K plot-1 at 25DAT+ 10 g K plot-1 at 30 DAT+ 10 g K plot-1 at 45 DAT] were considered as treatments. From the experiment it was found that split application of potassium had no significant effect on plant height, length of panicle, thousand grains weight. It was evident that two splits application of potassium i.e., 20 g K plot-1 at 15 DAT+20 g K plot-1 at 30 DAT with BRRI dhan41 gave maximum no. of tiller hill-1, effective tiller hill-1, grains panicle-1, grain yield and straw yield, biological yield and harvest index. But varieties differed among themselves in terms of yield contributing characters and yield, and BRRI dhan41 performed the best. Therefore, based on the findings of the present study, it may be concluded that for obtaining higher yield BRRI dhan 41 can be grown following application of potassium at the rate of 80 kg ha-1 in two equal split at 15 and 30 days after transplanting Res. Agric., Livest. Fish.5(3): 313-320, December 2018

scholarly journals Yielding Ability of Rice Varieties and Lines for Feed in the Tohoku Region of Japan

2018 ◽  
Vol 87 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Akira Fukushima ◽  
Hisatoshi Ohta ◽  
Narifumi Yokogami ◽  
Naoto Tsuda
Keyword(s):  
Rice Varieties ◽  
Yielding Ability

scholarly journals Evaluation of Rice Straw Yield, Fibre Composition and Collection Under Mediterranean Conditions

2019 ◽  
Vol 22 (2) ◽  
pp. 43-47 ◽  
Author(s):  
Javier Matías ◽  
Verónica Cruz ◽  
Antonio García ◽  
Diana González
Keyword(s):  
Rice Straw ◽  
Harvest Index ◽  
Biomass Yield ◽  
Rice Variety ◽  
Biomass Partitioning ◽  
Rice Varieties ◽  
Straw Yield ◽  
Fibre Composition ◽  
Detailed Assessment ◽  
Mediterranean Conditions

Abstract Rice straw remains almost unutilised in the majority of cases and is usually burned. Data on rice residue production under European conditions are extremely limited. A detailed assessment of rice biomass yield, partitioning and straw collection was carried out in Spain. Eleven commercial rice varieties were evaluated in 2015, and two baling trials were performed in 2014 and 2015. The average straw yield was 9.7 t·ha−1. Straw yield, biomass partitioning indices and fibre composition varied significantly according to rice variety. Straw to grain ratio and harvest index were 1.00 and 0.50 on average for rough grain, and 1.25 and 0.41 for husked grain. Biomass partitioning indices significantly correlated with grain yield. Mean content of cellulose, hemicellulose, lignin and ash of rice straw was 32.5%, 19.8%, 6.5% and 13.7%, respectively. Straw amount of less than 3.0 t·ha−1 can be collected during the baling trials. Rice straw could represent an eco-friendly source of lignocellulosic biomass in Europe, however, in order to achieve this, baling machine improvements and special crop management should be carried out.

Influence of Split Application of Potassium on Yield and Yield Contributing Characters of rice cultivars- BR11 and Nizersail

2010 ◽  
pp. 84-89
Author(s):  
SN Mahfuza ◽  
MN Islam ◽  
Shamima Aktar ◽  
MR Amin ◽  
MA Islam
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Harvest Index ◽  
Rice Cultivars ◽  
Split Application ◽  
Rice Varieties ◽  
Increasing Trend ◽  
Almost All

Influence of split application of K on the sterility of BR11 and Nizersail was investigated in a field experiment conducted at the Bangladesh Agricultural University farm, Mymensingh during T. Aman season of 2003. The two rice varieties BR11 and Nizersail were grown with potassium applied at 70 kg and 60 kg K/ha, respectively. Split application of K showed similar effect of increasing trend in all the crop characters with the increase of the split applications from 1 to 3. Four splits were inferior to all. Three split of potassium showed superiority over 2, 1and 4 splits in almost all the crop characters, where the performance of Nizersail seemed to be better except in respect of sterile spikelets, grain yield and harvest index, where the superiority of BR11 was observed.

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