scholarly journals HYBRID VIGOUR EFFECT IN SORGHUM SELECTION

2019 ◽  
pp. 15-24
Author(s):  
O. P. Kibalnik
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
First Generation ◽  
Abiotic Factors ◽  
F1 Hybrids ◽  
Hybrid Vigour ◽  
Parental Form ◽  
Average Value ◽  
Dominant Genes ◽  
Inflorescence Length

The authors see application of hybrid vigour in the hybrids obtained on the basis of mother lines with cytoplasmic male sterility as a promising way of sorghum selection. The selection is aimed at increasing sorghum productivity. Hybrid vigour is observed in the first generation of hybrids which was caused by interaction among genes (dominance and epistasis) and additive effect of dominant genes. Its effect is weakened in further generations. The paper explores the effect of heterosis of F1 hybrids obtained on the basis of CMC lines with A1, A2, A3, A4, M-35-1A, 9E types of sterility and productive pollinator varieties which are resistant to biotic and abiotic factors in the region. The experiment was carried out on the pilot plots of Research and Technological Institute of Sorghum and Corn “Rossorgo” in 2015-2016. The area of the plot was7.7 m2; frequency observed was three times; landfill location was random. The density of new hybrids, standards and parental forms was 100 thousand plants pro a hectare. The frequency of pure (superior to the superior parental form), hypothetical (superior to the average value of parental forms) and competitive (excess of the sign of hybrid F1 over the released hybrid) heterosis in terms of: plant height, inflorescence length, grain mass per panicle and 1000 grains, yield. Heterosis was more frequent in terms of plant height, inflorescence length, weight of 1000 grains, and less frequently (mainly in 2016) in terms of yield and weight of grain from a panicle. The authors indicate the prospective combinations of crosses with low effect of competitive heterosis in plant height and the highest yield as: A1 O-Yang 1/Avance, A1 O-Yang 1/Topaz, A3 Feterita 14/Mercury, A4 KP 70/Volzhskoe 4. These hybrids form the grain yield of 4.09-9.15 t/ha (2015-2016) and are characterized by the effect of competitive heterosis in2016 interms of grain yield from 2.1 to 71.4%. Hybrids A1 O-Yang 1/Volzhskoe 4 and A2 KVV 114/Avance differ in competitive heterosis by weight of 1000 grains (51.7-60.0%) and grains from one panicle (5.8-52.9%). The hybrids outlined are expected to be relevant for further tests.

scholarly journals Productivity of Quinoa (Chenopodium quinoa L.) Genotypes Across Different Agro-Ecological Regions of Oman

2021 ◽  
Vol 15 (1) ◽  
pp. 98-109
Author(s):  
Saif Ali AlKhamisi ◽  
Saleem K. Nadaf ◽  
Nadiya Mohammed Al-Jabri ◽  
Khalid Said Al-Hashmi ◽  
Asma Ismail Al-Shirawi ◽  
...  
Keyword(s):  
Grain Yield ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Abiotic Factors ◽  
Winter Season ◽  
Rapid Expansion ◽  
Research Station ◽  
Ecological Regions ◽  
Inflorescence Length ◽  
Number Of Branches

Background: Quinoa has the great potentiality of its expansion in world agriculture owing to its resilient traits of productivity under marginal conditions across varying altitudes, soil and climatic conditions with extreme levels of abiotic factors like moisture stress, high temperature and salinity as influenced by climatic change. It offers a crop of food security in several countries that have begun the trials of evaluation since the early 1980s leading to the rapid expansion of its cultivation in other countries after the United Nation’s declaration for 2013 as “Year of Quinoa” to promote its production as a grain crop. In this view, five quinoa genotypes were evaluated for their yield, agronomic performance and adaptability at three locations across different agro-ecological regions of Oman. Methods: Five quinoa genotypes Amarilla Marangani, Amarilla Sacaca, Blanca de junin, Kancolla and Salcedo INIA, received from the Oman FAO office in 2016, were evaluated for three consecutive years from 2016/2017 to 2018/2019 during the winter season (October to March) at national agriculture research stations located at Rumais in South Batinah governorate, AlKamil in South Sharqia governorate and Sohar in North Batinah governorate. The experiments were conducted on the sites containing sandy loam soil under Randomized Complete Block Design (RCBD) involving these five genotypes with four replications under a drip-irrigation system with varying levels of irrigation water salinity. The irrigation and fertilizers were applied as per national recommendations. The characters viz. chlorophyll content, plant height (cm), number of branches, inflorescence length (cm), days to maturity and grain yield (ton/ha) were recorded at appropriate times of growth of crops at all locations. Grain samples were subjected to proximate analysis. The data on yield and yield contributing characters were subjected to multi-factor analysis of variance (ANOVA) using GenStat Statistical Package v12. Results: The results indicated that among the effects of main factors viz. genotypes, locations and years, all the effects were highly significant (p<0.01) in respect of plant height and grain yield, whereas for a number of branches, all the main effects except genotypes were highly significant (p<0.01). In respect of chlorophyll content (SPAD value), effects of genotype and years were found significant (p<0.05) and whereas for inflorescence length, effects of locations and years were highly significant (p<0.05). Genotype Amarllia Sacaca had the highest plant height (135 cm), followed by genotype Salcedo INIA (117 cm) during the winter season of 2016/2017. The highest grain yield of 5.40 t ha-1) obtained was harvested at Agriculture Research Station, Rumais where Amarllia Sacaca produced the highest (8.86 t ha-1). The protein content was highest (17.49%) in the genotype Amarllia Maranagani. Irrespective of genotypes, locations and years, the quinoa crop had acceptable performance in terms of 107.47 cm plant height, 18 number of branches, 44.47 SPDA value (chlorophyll) and 31.96 cm inflorescence length with an average yield of 3.83 t ha-1. Conclusion: Quinoa has been found to be highly adaptable to Northern agro-ecological regions (South and North Batinah Governorates) of Oman, and genotypes evaluated can be successfully introduced for general cultivation in Northern Oman.

scholarly journals Heterosis dan Heterobeltiosis Hasil Gabah Serta Korelasinya Terhadap Pertumbuhan Padi Hibrida

2019 ◽  
Vol 15 (2) ◽  
pp. 92-100
Author(s):  
Nurwulan Agustiani ◽  
Sujinah Sujinah ◽  
Bayu P Wibowo ◽  
Satoto Satoto
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Tiller Number ◽  
F1 Hybrids ◽  
Grain Number ◽  
Average Value ◽  
Positive Heterosis ◽  
Growth Characters ◽  
Grain Number Per Panicle

Heterosis in F1-hybrids is very closely related to processes during plant growth. The purpose of this study was to obtain information on some growth characters that supported positive heterosis for yield.  The experiment was carried out at KP. Sukamandi on the rainy season in 2016, used a Randomized Block Design with three replications. The material used in this study were four superior hybrid varieties (Hipa 9, Hipa 18, Hipa 19, and Hipa East Java 2) and their parents (maintainer and restorer strains). The results showed that the four materials tested had positive heterosis values ​​with an average value of 4.23-25.03% for the characters of plant height, tiller number, grain number per panicle, weight of 1000 grains, and yield. Heterobeltiosis values ​​ranged from 2.06% to 13.62% for the characters of plant height, tiller number, grain number per panicle, and yield.  Growth characters that were positively correlated to yield increase were plant height, leaf area in the primordia phase, and weight of 1000 grains. The four hybrid materials tested had similar leaf area per clump in the primordia phase, but only Hipa Jatim 2 still had the highest leaf area in the physiological cooking phase. All four hybrids had better leaf thickness characteristics than their parents. F1 average showed increased number of grain per panicle compared to the two parents, especially in Hipa 18 and Hipa 19, which had a higher weight per 1000 grains than the two parents. Keywords: hybrids, rice, heterosis, heterobeltiosis   ABSTRAK Heterosis pada F1-hibrida sangat berkaitan erat dengan proses-proses selama pertumbuhan tanaman. Tujuan penelitian ini adalah untuk mendapatkaninformasibeberapa karakter pertumbuhan yang mendukung heterosis positif terhadap hasil. Percobaan dilaksanakan di KP. Sukamandi pada musim hujan 2016, menggunakan Rancangan Acak Kelompok dengan tiga ulangan. Materi yang digunakan dalam penelitian ini adalah empat varietas unggul hibrida (Hipa 9, Hipa 18, Hipa 19, dan Hipa Jatim 2) dan tetuanya (galur maintainer dan restorer). Hasil penelitian menunjukkan bahwa keempat materi yang diuji mempunyai nilai heterosis positif dengan nilai rata-rata 4,23-25,03% pada karakter tinggi tanaman, jumlah anakan, jumlah gabah per malai, bobot 1000 butir, dan hasil. Nilai heterobeltiosis berkisar antara 2,06% sampai 13,62% pada karakter tinggi tanaman, jumlah anakan, jumlah gabah per malai, dan hasil. Karakter-karakter pertumbuhan yang berkorelasi positif terhadap peningkatan hasil yaitu tinggi tanaman, luas daun pada fase primordia, dan bobot 1000 butir. Keempat materi hibrida yang diuji mempunyai luas daun per rumpun yang setara pada fase primordia, namun hanya Hipa Jatim 2 yang masih mempunyai luas daun tertinggi pada fase masak fisiologis,.  Keempatnya mempunyai karakter ketebalan daun yang lebih baik dibanding tetuanya. Rata-rata F1 menunjukkan perbaikan jumlah gabah per malai dibanding kedua tetuanya, terlebih pada Hipa 18 dan Hipa 19 yang juga mempunyai bobot 1000 butir lebih tinggi dibandingkan kedua tetuanya. Kata kunci: hibrida, pada, heterosis, heterobeltiosis

scholarly journals Evaluation of Underutilized Kodo Millet (Paspalum scrobiculatum L.) Accessions using Morphological and Quality Traits

2020 ◽  
Author(s):  
V. Nirubana ◽  
R. Ravikesavan ◽  
K. Ganesamurthy
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Association Studies ◽  
Antioxidant Properties ◽  
Flowering Plant ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Wide Range ◽  
Kodo Millet ◽  
Inflorescence Length

Background: Kodo millet is an important drought tolerant crop and has high nutritional values, dietary fiber and antioxidant properties. It has considerable production potential in marginal and low fertility soils under diverse environmental conditions. Considering the importance of the crop, it is necessary to improve the nutritional quality along with grain yield of the crop. With this background, the investigation was aimed to study the correlation and path coefficient analysis which helps to identify the promising traits for yield and quality improvement. Methods: One hundred and three kodo millet germplasm lines were evaluated for 13 morpho-agronomic and two grain nutritional traits. The crop was raised in randomized block design to select the promising genotypes and to study the association among the traits and the magnitude of direct and indirect effects for fifteen quantitative traits. Result: Based on the overall mean performance the significant genotypes were identified and found wide range of variability for different traits. Character association studies indicated that days to first flowering, days to 50 per cent flowering, plant height, number of productive tillers, peduncle length, inflorescence length, length of the longest raceme and thumb length were significantly positive association with grain yield per plant. Path coefficient analysis revealed that inflorescence length, plant height, length of the longest raceme, flag leaf blade length and number of productive tillers exhibited high direct positive effect on grain yield. Therefore, giving importance of these traits during selections may be useful for developing nutritionally superior high yielding kodo millet genotypes.

scholarly journals Influence of different types of sterile cytoplasms (A3, A4, 9E) on the combining ability of CMS lines of sorghum

2020 ◽  
Vol 24 (6) ◽  
pp. 549-556
Author(s):  
O. P. Kibalnik ◽  
L. A. Elkonin
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Combining Ability ◽  
F1 Hybrids ◽  
Thermal Coefficient ◽  
Negative Effects ◽  
F1 Hybrid ◽  
Positive Effects ◽  
Different Types ◽  
Dry Seasons

Investigation of the effect of the cytoplasm on the combining ability (CA) of lines with cytoplasmic male sterility (CMS) is of considerable interest in terms of understanding the genetic functions of the cytoplasm and for practical purposes to create hybrids with improved economically valuable traits. In order to investigate the effect of different types of sterile cytoplasm (A3, A4, 9E) on CA in sorghum, we studied the manifestation of a number of biological and agronomic traits in 54 F1 hybrid combinations obtained using iso-nuclear CMS lines with the nuclear genome of the line Zheltozernoye 10, differing only in the types of sterile cytoplasm (A3, A4 and 9E). Eighteen varieties and lines of grain sorghum developed at the Russian Research and Project-technological Institute of Sorghum and Maize were used as paternal parents. The CA was determined by the topcross method. F1 hybrids and their parents were grown in 2015–2017 in conditions of insufficient (2015–2016: HTC (hydro-thermal coefficient) = 0.32–0.66), or good water availability conditions (2017: HTC = 1.00). On average, for three years of testing, a positive effect of the 9E cytoplasm on the general combining ability (GCA) (0.63) and negative effects of the A3 and A4 cytoplasms (–0.32 and –0.31) for the inflorescence length were noted. In dry seasons, significant positive effects of the 9E cytoplasm on GCA for the length of the largest leaf, and positive effects of the A3 cytoplasm on GCA for the plant height, and negative effects of the A4 cytoplasm on GCA for these traits were observed. No differences were observed during the wet season. The type of CMS did not affect the GCA for the width of the largest leaf and grain yield. The dispersion of specific combining ability (SCA) in the dry seasons was significant for the following traits: leaf length, plant height, panicle length and width, and grain yield, the 9E cytoplasm had the highest SCA dispersion, whereas the A4 cytoplasm had the smallest one. The data obtained indicate that different types of sterile cytoplasm of sorghum make a different contribution to CA under conditions of drought stress.

scholarly journals Heterotic Effects in Fls and Inbreeding Depression in F2 Hybrids of Sunflower

2015 ◽  
Vol 58 (1) ◽  
pp. 1-10
Author(s):  
Shahnaz Memon ◽  
Muhammad Jurial Baloch ◽  
Gul Muhammad Baloch ◽  
Muhammad Ibrahim Keerio
Keyword(s):  
Plant Height ◽  
Inbreeding Depression ◽  
Seed Yield ◽  
Block Design ◽  
Oil Yield ◽  
F1 Hybrids ◽  
Hybrid Vigour ◽  
Head Diameter ◽  
Days To Maturity ◽  
F2 Hybrids

Genetically diverse female lines of sunflower were crossed with male testers to get heterotic hybrids. Studies were carried-out during 2008-2010 at Experiment filed of Agriculture Research Institute, Tandojam, Sindh, Pakistan. Six female lines like T-4-0319, PAC-0505, HO-I, Hysun-33, Peshawar-93 and CMS-03 and three testers i.e., PAC-0306, PAC-64-A and SF-187 were crossed in a line ´ tester mating design, thus 18 F1 and F2 hybrids were developed for evaluation of heterosis and inbreeding depression for days to initial flowering, days to maturity, leaves/plant, plant height (cm), head diameter (cm), 1000-achene weight (g), seed yield kg/ha and oil yield kg/ha. The experiment was conducted in a randomised complete block design with four replications. The analysis of variance revealed significant differences among parents, F1s and F2 hybrids for all the traits studied. The existence of significant genetic variability among the plant traits is particularly useful because variations in these traits would allow further improvement in sunflowerseed yield and oil traits. The F1 hybrids HO-I ´ PAC-0306 and HO-I PA ´ C-64-A exhibited desirable negative mid and better parent heterosis for days to initial flowering, days to maturity and plant height. These hybrids also manifested desirable positive heterotic effects for leaves/plant, head diameter, 1000-achene’s weight, seed yield and oil yield. Inbreeding depression for phenological, seed yield and oil traits  showed that desirable high inbreeding depression was observed in hybrids HO-I ´ P´AC-64-A, HO-I ´ PAC-0306 and HO-I ´ SF-187 for days to initial flowering, similarly T-4-0319 ´ PAC-0306, PAC-0505 ´ SF-187 and HO-I ´ PAC-64-A explicated maximum but rewarding inbreeding depression for days to maturity. The F2 hybrids Hysun-33 ´ SF-187 and Peshawer-93 ´ PAC-64-A may be the most desirable ones in the sense that they recorded comparatively moderate inbreeding depression with enough number of leaves to be productive if F2 hybrids are to be exploited for hybrid vigour. Low inbreeding depression for various traitsindicated that such hybrids some how favour the usefulness of F2 hybrids in sunflower. 

scholarly journals Correlation of yield and heterosis of maize hybrids and their parental lines with genetic distance based on SSR markers

Genetika ◽  
2012 ◽  
Vol 44 (2) ◽  
pp. 399-408 ◽  
Author(s):  
Snezana Mladenovic-Drinic ◽  
Marija Kostadinovic ◽  
Danijela Ristic ◽  
Milan Stevanovic ◽  
Zoran Camdzija ◽  
...  
Keyword(s):  
Grain Yield ◽  
Genetic Distance ◽  
Ssr Markers ◽  
F1 Hybrids ◽  
F1 Hybrid ◽  
Maize Hybrids ◽  
Average Value ◽  
Parental Inbred ◽  
The Mean ◽  
Parental Lines

The yield, grain yield heterosis and genetic distance based on SSR markers were analyzed in eight maize hybrids and their parental lines. The mean grain yield of all F1 hybrids was 11.37 tha-1. The F1 hybrid from the crosses between L4xL6 gave the highest grain yield of 12.12 tha-1. For the mid parent heterosis (MPH) grain yields of the F1 hybrids, the data showed the average value of 164.25%, and ranged from 136.72% (L4xL6) to 218.07% (L8xL2), and for better parent heterosis (BPH) from 100.70% (H4) to 212.60% (H2), averaged 137.36%. The average genetic distance among parental inbred lines of analyzed hybrids was 0.58 with a range from 0.55 to 0.61. The GD showed a positive correlation with the grain yield of the F1 hybrids (0.22), as well as with MPH and BPH, with the values of 0.12 and 0.45, respectively.

scholarly journals Inheritance of Special Productivity Characters by Hybrids F1 of Spring Triticale in the Conditions of the Vladimir Region

2021 ◽  
Vol 7 (9) ◽  
pp. 96-103
Author(s):  
D. Zuev ◽  
A. Tyslenko
Keyword(s):  
First Generation ◽  
Correct Selection ◽  
F1 Hybrids ◽  
Parental Form ◽  
Degree Of Dominance ◽  
Spring Triticale ◽  
Vladimir Region ◽  
Economically Valuable Traits ◽  
High Degree ◽  
Ear Number

The main method of breeding spring hexaploid Triticale is intravariety hybridization. At the same time, the effectiveness of breeding work depends on the correct selection of parental forms for crosses. However, the parental forms show different combining ability according to selective characteristics. In this regard, selection is more effective if it is based on information about their inheritance obtained through genetic analysis. The purpose of the research is to study the nature of inheritance of the main characteristics of productivity of the main ear (number of spikelets per ear, number of grains per ear, weight of grain per ear, weight of 1000 grains) hybrids of spring triticale F1 in agroecological conditions of the Vladimir region. The material of the study was 20 reciprocal hybrid combinations of spring triticale in comparison with the parental forms. To create hybrids of the first generation, four varieties of domestic selection and one Belarusian with high indicators of economically valuable traits were involved in hybridization. A different degree of phenotypic dominance has been established, which determines the type of inheritance of quantitative signs of productivity of the main ear. Reciprocal F1 hybrids differed in the degree of dominance from depression (negative overdominance) to heterosis (positive overdominance). The heterosis effect depended on which parental form was taken for the maternal, and which for the paternal. Hybrid F1 combinations with a high degree of overdominance of the main characteristics of the productivity of the main ear are identified: Lotas × Norman, Norman × Lotas, Norman × Grebeschok, Amigo × Grebeschok, Amigo × Norman.

Study onGenetic Variability, Heritability and Genetic Advance for Seed Yield and Component Traits in Rice

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
PUNIT KUMAR ◽  
VICHITRA KUMAR ARYA ◽  
PRADEEP KUMAR ◽  
LOKENDRA KUMAR ◽  
JOGENDRA SINGH
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Seed Yield ◽  
Flag Leaf ◽  
Grain Weight ◽  
Major Influence ◽  
Genetic Advance ◽  
Component Traits ◽  
Biological Yield ◽  
1000 Grain Weight

A study on genetic variability, heritability and genetic advance for seed yield and component traits was made in 40 genotypes of riceduring kharif 2011-2012 at SHIATS, Allahabad. The analysis of variance showed highly significant differences among the treatments for all the 13 traits under study.The genotypes namely CN 1446-5-8-17-1-MLD4 and CR 2706 recorded highest mean performance for panicles per hill and grain yield. The highest genotypic and phenotypic variances (VG and VP) were recorded for spikelets per panicle (3595.78 and 3642.41) followed by biological yield (355.72 and 360.62) and plant height (231.48 and 234.35).High heritability (broad sense) coupled with high genetic advance was observed for plant height, flag leaf length, panicles per hill, tillers per hill, days to maturity, spikelet’s per panicle, biological yield, harvest index, 1000 grain weight and grain yield, indicating that selection will be effective based on these traits because they were under the influence of additive and additive x additive type of gene action. Highest coefficient of variation (PCV and GCV) was recorded for tillers per hill (18.42% and 17.23%), panicle per hill (19.76 % and 18.68%), spikelet’s per panicle (34.30 and34.07 %), biological yield (28.31 % and 28.12 %), 1000 grain weight (15.57 % and 15 31 %) and grain yield (46.66% and 23.54 %), indicating that these traits are under the major influence of genetic control, therefore the above mentioned traits contributed maximum to higher grain yield compared to other traits, indicating grain yield improvement through the associated traits.

scholarly journals Performance of hybrid rice grown from separated tillers

2019 ◽  
Vol 17 (4) ◽  
pp. 507-513
Author(s):  
FN Kamarum Munira ◽  
Md. Parvez Anwar ◽  
Sabina Yeasmin ◽  
Md. Harun Or Rashid ◽  
Mst Farzana Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Hybrid Rice ◽  
Rice Variety ◽  
Field Laboratory ◽  
Split Plot ◽  
Rice Seeds ◽  
Four Levels ◽  
Plot Design

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to November 2016 to investigate the performance of separated tillers of hybrid rice variety Dhani Gold. The experiment comprised three times of tiller transplantation viz. 3, 4 and 5 week aged tiller seedlings and four levels of number of tiller seedlings transplanted hill-1 viz. 2, 3, 4 and 5 tiller seedlings hill-1 laid out in a split plot design with 3 replications. The highest plant height was obtained when 3-week aged tiller seedlings were transplanted at the rate of 3 tiller seedlings hill-1. The highest number of total tillers hill-1 and number of effective tillers hill-1 were found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grains panicle-1 was obtained when 4-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grain yield was found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The lowest grain yield was found when 5-week aged tiller seedlings were transplanted with 2 tiller seedlings hill-1 in hybrid rice variety Dhani Gold. Based on the findings of the present study it may be concluded that 3-week old tiller seedlings of Dhani Gold should be transplanted at the rate of 4 or 5 tiller seedlings hill-1 for higher yield. Thus present study confirms the potentiality of growing hybrid rice from separated tillers in case of unavailability of seedlings or to minimize the seed cost of high value hybrid rice seeds. J Bangladesh Agril Univ 17(4): 507–513, 2019

scholarly journals Growth and yield performance of soybean with the application of Bradyrhyzobium inoculant via furrow and seed

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2387
Author(s):  
Santiel Alves Vieira Neto ◽  
Fábio Ribeiro Pires ◽  
João Carlos Madalão ◽  
Douglas Gomes Viana ◽  
Carlos César Evangelista de Menezes ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agricultural Production ◽  
Aerial Part ◽  
Dry Matter ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Yield Performance ◽  
Seed Inoculation ◽  
Dry Matter Weight

Given the high costs of agricultural production, especially due to the price of fertilisers, particularly nitrogen, the use of inoculants to supply nitrogen to soybean crops is a widely recommended practice. The objective of this study was to evaluate the feasibility of applying inoculants through seed and planting furrow in soil previously cultivated with soybean and Brazilian native “cerrado” biome soil under greenhouse conditions. Seven treatments were tested: 1) inoculation via seed (inoculant + fungicide + micronutrient), 2) treatment via seed (fungicide + micronutrient), 3) control (only seed), 4) inoculation via furrow-dose 1 (recommended dose), 5) inoculation via furrow-dose 2 (twice the recommended dose), 6) inoculation via furrow-dose 3 (three times the recommended dose) and 7) inoculation via furrow-dose 1 + seed inoculation. We evaluated plant height, fresh and dry matter weight of the aerial part and nodules, number of total, viable and non-viable nodules, number of pods per plant and grain yield. Inoculation was more effective when used in cerrado soil, but soybean performance in treatments without inoculation was higher in previously cultivated soil. Application through furrow proved to be a viable practice due to the similarity of the results obtained with the traditional application by seed.

Sign in / Sign up

Export Citation Format

Share Document