scholarly journals Impact of integrated use of enriched compost, biochar, humic acid and Alcaligenes sp. AZ9 on maize productivity and soil biological attributes in natural field conditions

2019 ◽  
Vol 14 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Azhar Hussain ◽  
Maqshoof Ahmad ◽  
Muhammad Zahid Mumtaz ◽  
Farheen Nazli ◽  
Muhammad Aslam Farooqi ◽  
...  
Keyword(s):  
Humic Acid ◽  
Grain Yield ◽  
Soil Quality ◽  
Microbial Biomass Carbon ◽  
Organic Amendments ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Maximum Increase ◽  
Maize Productivity ◽  
Biological Attributes

Organic amendments improve the soil quality and plant productivity as well as help in the establishment of introduced bacteria. The present study was conducted to evaluate the interactive impact of organic amendments and plant growth promoting rhizobacteria strain Alcaligenes sp. AZ9 to improve maize productivity and soil quality. organic amendments including rock phosphate enriched compost (RPEC), biochar, and humic acid were applied in soil along with and without Alcaligenes sp. AZ9. The results revealed that the sole application of organic amendments along with Alcaligenes sp. AZ9 showed increase in growth and grain yield of maize. However, a combined application of organic amendments (RPEC, biochar, and humic acid) along with Alcaligenes sp. AZ9 showed maximum increase in plant height up to 14%, shoot dry biomass up to 30%, 1000-grains weight up to 10%, grain yield up to 31%, stover yield up to 34%, and potassium (K) concentration in grains up to 12% as compared to absolute control. The increase in nitrogen (N) and phosphorus (P) concentration in grains was non-significant over control. This treatment also improved soil biological attributes in terms of the bacterial population up to 60%, microbial biomass carbon up to 22%, soil organic carbon up to 29%, and saturation percentage of soil up to 14% as compared to control. It can be concluded that the application of organic amendments improved establishment of introduced bacteria, which could be effective in improving maize growth and yield as well as soil health.

scholarly journals Comparative Effects of Bio-Wastes in Combination with Plant Growth-Promoting Bacteria on Growth and Productivity of Okra

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2065
Author(s):  
Hammad Anwar ◽  
Xiukang Wang ◽  
Azhar Hussain ◽  
Muhammad Rafay ◽  
Maqshoof Ahmad ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Health ◽  
Organic Amendments ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Plant Growth Promoting Bacteria ◽  
Randomized Design ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting rhizobacteria with multiple growth-promoting traits play a significant role in soil to improve soil health, crop growth and yield. Recent research studies have focused on the integration of organic amendments with plant growth-promoting rhizobacteria (PGPR) to enhance soil fertility and reduce the hazardous effects of chemical fertilizers. This study aims to evaluate the integrated application of biochar, compost, fruit and vegetable waste, and Bacillus subtilis (SMBL 1) to soil in sole application and in combined form. The study comprises eight treatments—four treatments without inoculation and four treatments with SMBL 1 inoculation in a completely randomized design (CRD), under factorial settings with four replications. The results indicate that the integrated treatments significantly improved okra growth and yield compared with sole applications. The integration of SMBL 1 with biochar showed significant improvements in plant height, root length, leaf chlorophyll a and b, leaf relative water content, fruit weight, diameter and length by 29, 29, 50, 53.3, 4.3, 44.7 and 40.4%, respectively, compared with control. Similarly, fruit N, P and K contents were improved by 33, 52.7 and 25.6% and Fe and Zn in shoot were 37.1 and 35.6%, respectively, compared with control. The results of this study reveal that the integration of SMBL 1 with organic amendments is an effective approach to the sustainable production of okra.

scholarly journals Prediction of Maize Yields from In-Season GreenSeeker Normalized Difference Vegetation Index and Dry Biomass as Influenced by Different Nutrient Combinations

2020 ◽  
Vol 13 (1) ◽  
pp. 165
Author(s):  
Hillary M. O. Otieno ◽  
George N. Chemining’wa ◽  
Shamie Zingore
Keyword(s):  
Grain Yield ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Nutrient Management ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Yield Prediction ◽  
Maize Productivity ◽  
Dry Biomass ◽  
The Right

To mitigate low maize productivity, improve on-farm planning and policy implementation, the right fertilizer combinations and yield forecasting should be prioritized. Therefore, this research aimed at assessing the effect of applying different nutrient combinations on maize growth and yield and in-season grain yield prediction from biomass and normalized difference vegetation index (NDVI) readings. The research was done in Embu and Kirinyaga counties, in Central Kenya. Nutrient combinations tested were P+K, N+K, N+P, N+P+K, and N+P+K+Ca+Mg+Zn+B+S. The results showed consistently lowest and highest NDVI reading, dry biomass, and grain yields due to P+K and N+P+K+Ca+Mg+Zn+B+S treatments, respectively. Positive NDVI responses of 56%, 14%, 15%, and 15% were recorded with N, P, K, and combined Ca+Mg+Zn+B+S, respectively. These nutrients, in the same order, recorded 54%, 20%, 8%, and 18% positive responses with biomass. The GreenSeeker NDVI reading with grain yield and aboveground dry biomass with grain yield recorded R2 ranging from 0.23-0.53 and 0.30-0.61 (in Embu), and 0.31-0.64 and 0.30-0.50 (in Kirinyaga), respectively. When data were pooled, the prediction strength increased, reaching a maximum of 67% and 58% with NDVI and biomass, respectively. Yield prediction was even more robust when the independent variables were combined through multiple linear model at both 85 and 105 days after emergence. From this research, it is evident that the effects of balanced fertilizer application are detectable from NDVI readings—providing a tool for tracking and monitoring nutrient management effects—not just from the nitrogen perspective as commonly studied but from the combined effects of multiple nutrients. Also, grain yield could be accurately predicted early before harvesting by combining NDVI and biomass yields.

scholarly journals Long-Term Bacterial Fertilizer Application Improves Eucalyptus Growth and Yields through Altering Soil Quality

2020 ◽  
Author(s):  
Han Ren ◽  
Xiaohong Qin ◽  
Chengqun Lv ◽  
Víctor Fernández-García ◽  
Chuan Xie
Keyword(s):  
Plant Growth ◽  
Soil Quality ◽  
Soil Nutrient ◽  
Principal Component ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Stem Volume ◽  
Plant Interactions ◽  
Nutrient Contents

Abstract Sludge and plant growth-promoting rhizobacteria (PGPR) are widely used to improve soil quality and plant growth. In this study we aim to determine the responses of soil enzyme activities, soil nutrient contents and plant growth to fertilization with sludge and PGPR (Bacillus megaterium strain DU07). To achieve this goal, we planted bare-root eucalyptus seedlings with soil amended with (1) filtered sludge from sugar factory (FS), (2) filtered sludge + PGPR (BF) and (3) non-amended soil (control). Soil properties (soil nutrients and soil extracellular enzymatic activities) and eucalyptus growth (diameter, height and stem volume) were studied 3, 6, 9 and 12 months after treatments. Results indicated that BF significantly increased plant height, diameter, and stem volume after the sixth month. Principal component analysis (PCA) showed that soil quality was significantly increased by BF during our trial period, especially after the ninth month. The pooled regression model indicated that soil quality significantly and positively affected eucalyptus yield, whereas soil TN was negatively and significantly related to plant stem volume. Hence, our study indicates that the application of a bacterial fertilizer increases plant growth and yield via increasing soil quality. Thus, our findings suggest that PGPR amendments could be useful as bio-fertilizer to improve soil-plant interactions in eucalyptus plantations.

scholarly journals Influence of Organic and Inorganic Sources of Fertilizers on Growth and Yield of Maize (Zea mays L.) in Fiji

2020 ◽  
Author(s):  
H.K. Sachan ◽  
Deeksha Krishna ◽  
A. Prasad
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Production Efficiency ◽  
Block Design ◽  
Poultry Manure ◽  
Leaf Length ◽  
Growth And Yield ◽  
Higher Plant ◽  
Maize Productivity ◽  
Number Of Leaves

Background: Maize is used both as green cobs and for grains and it is in increasing demand throughout Fiji. Maize productivity is low and could be attributed primarily to climate, low soil fertility and inappropriate agronomic practices.Methods: The experiment was laid out on maize variety Nirala in a randomized block design with three replications and six treatments comprising NPK, poultry manure and its combinations. Parameters on plant height (cm), number of leaves per plant, leaf length, leaf width, stem girth, grain yield were recorded and collected data was analyzed statistically applying the analysis of variance technique. Result: Results reveled that among the all combinations, 100% NPK (300 kg/ha) along with PM @ 10 t ha-1 recorded higher plant height (204.00 cm), number of leaves per plant (12.87), maximum production efficiency (20.93 Kg/day/ha) and significantly superior (2511 kg/ha) grain yield and was most effective for improving growth and yield of maize.

scholarly journals Effects of different levels of soil moisture and indigenous organic amendments on the yield of boro rice grown under field condition

2020 ◽  
Vol 29 (1) ◽  
pp. 87-96
Author(s):  
Md Shiful Islam ◽  
Md Harunor Rashid Khan ◽  
Mohammed Sadid Hossain
Keyword(s):  
Soil Moisture ◽  
Grain Yield ◽  
Organic Amendments ◽  
Growth And Yield ◽  
Soil Conditions ◽  
Rice Varieties ◽  
Yield Attributes ◽  
Mustard Meal ◽  
Moist Condition ◽  
1000 Grain Weight

A field study was conducted to determine the potentials of moist (70% soil moisture) and saturated (> 100% soil moisture) soil conditions and organic amendments of rice straw compost (RSC), mustard meal (MM) and trichocompost (TC) on the selected rice varieties of BR 3, local BRRI dhan 29 and BRRI dhan 74 in relation to the growth and yield attributes of rice varieties. The rates of amendments were 0, 4, 8 t/ha for RSC; 0, 3, 6 t/ha for MM and 0, 2.5, 5 t/ha for TC. The maximum grain yield of 8.71 t/ha was attained from the RSC4ML100 and 8.58 t/ha from RSC4ML70 treatments. The moist condition of soil had almost similar effects on the number of productive tillers, grain yield, number of filled and fissured grains, 1000-grain weight and harvest index as compared to saturated condition along with the doses of RSC, MM and TC. The RSC (4 t/ha) was the superior treatment with respect to the growth and yield components of rice followed by the treatments of TC (2.5 t/ha) and MM (3 t/ha), irrespective of rice varieties and moisture levels. Dhaka Univ. J. Biol. Sci. 29(1): 87-96, 2020 (January)

scholarly journals Effects of the Combinations of Rhizobacteria, Mycorrhizae, and Seaweed, and Supplementary Irrigation on Growth and Yield in Wheat Cultivars

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 811
Author(s):  
Z. Najafi Vafa ◽  
Y. Sohrabi ◽  
R. Z. Sayyed ◽  
Ni Luh Suriani ◽  
Rahul Datta
Keyword(s):  
Grain Yield ◽  
Plant Growth Promoting Rhizobacteria ◽  
Low Fertility ◽  
Growth And Yield ◽  
Wheat Cultivars ◽  
Similar Treatment ◽  
Supplementary Irrigation ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Food Consumed

Wheat is a staple food consumed by the majority of people in the world and its production needs to be doubled to feed the growing population. On the other hand, global wheat productivity is greatly affected due to drought and low fertility of soil under arid and semi-arid regions. Application of supplementary irrigation and plant growth-promoting rhizobacteria (PGPR) has been suggested as sustainable measures to combat drought stress and to improve soil fertility and, hence, crop yield. This research was undertaken to study the effect of supplementary irrigation together with a combination of various PGPR on the growth and yield of two wheat cultivars, namely Sardari and Sirvan. The results of variance analysis (mean of squares) showed that the effect of irrigation, cultivar, and irrigation and biofertilizer and irrigation on height, spike length, seed/spike, and numbers of spikes/m2, 1000-seed weight, and grain yield were significant at 1% probability level. The effect of cultivar and irrigation interactions showed that the highest grain yield was obtained in a treatment with two additional irrigations in Sirvan cultivar (5015.0 kg/ha) and Sardari (4838.9 kg/ha) as compared to the 3598 kg/ha and 3598.3 kg/h grain yield in Sirvan and Sardari cultivars with similar treatment, but without irrigation, i.e., dryland farming. Drought conditions significantly affected the wheat grain yield while supplementary irrigation resulted in 39.38% and 34.48% higher yields in Sirvan and Sardari cultivars.

scholarly journals Inoculation of Pseudomonas putida in Farmer Environment to Improve Growth and Yield: Maize (Zea mays L.) Trial in Sothern, Central and Northern (Benin)

2020 ◽  
pp. 9-21
Author(s):  
M. Y. Adoko ◽  
N. A. Agbodjato ◽  
G. C. Ouikoun ◽  
O. Amogou ◽  
P. A. Noumavo ◽  
...  
Keyword(s):  
Pseudomonas Putida ◽  
Agricultural Development ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Maize Productivity ◽  
Maize Seeds ◽  
Plant Growth Promoting ◽  
Southern Central ◽  
Underground Biomass

The application of Plant Growth Promoting rhizobacteria as a microbial bio-fertilizers to increase soil fertility and productivity, allows a rational use of chemical fertilizers which makes agriculture sustainable. The aim of this study was to evaluate the effects of the rhizobacteria Pseudomonas putida on the maize productivity in farmer environment. For this purpose, trials were conducted in two Agricultural Development Poles with nine (09) producers equitably distributed in Southern, Central and Northern Benin. The experimental design was a completely randomized block of three (03) treatments (T1: farmer practice; T2: P. putida + ½ recommended dose of NPK and Urea; T3: recommended dose of NPK and Urea) with three (03) repetitions. During sowing, two (2) maize seeds of the 2000 SYNEE-W variety were introduced into a pot and inoculated with 10 ml of bacterial suspensions of 108 CFU/ml concentration. The results showed that the best heights, stem diameters and leaf areas of maize plants were obtained with P. putida + ½ recommended dose of NPK and Urea with the nine (09) producers of the three (03) areas with respective increases of 14.76%; 18.08% and 26.56% compared to the farmer practice. In addition, the results related to yield parameters such as aerial biomass, underground biomass and maize grain yield were better improved with the P. putida + ½ recommended dose of NPK and Urea. The average rates of increase recorded were 42.70%, 38.96% and 77.69%, respectively, compared to farmer practice. In sum, this rhizobacteria can be used as the microbial bio-fertilizers to improve maize productivity in Benin.

scholarly journals Harnessing the Potential of Symbiotic Endophytic Fungi and Plant Growth-Promoting Rhizobacteria to Enhance Soil Quality in Saline Soils

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1810
Author(s):  
Zahra Rouydel ◽  
Mohsen Barin ◽  
Mir Hassan Rasouli-Sadaghiani ◽  
Maryam Khezri ◽  
Ramesh Raju Vetukuri ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Quality ◽  
Mycorrhizal Fungi ◽  
Microbial Biomass Carbon ◽  
Plant Growth Promoting Rhizobacteria ◽  
Basal Respiration ◽  
Saline Soils ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
And Control

Soil salinity is one of the most important abiotic stresses limiting crop growth and production worldwide. Some microorganisms can improve the plants’ tolerance to salinity. For this purpose, a greenhouse experiment was performed to understand the influence of various microorganisms on soil biological indices and wheat growth under different saline conditions. The factors varied in the experiment were the microbial treatment (rhizobacteria, mycorrhizal fungi, endophytic fungus, and control) and salinity stress (0.5, 8, and 14 dS m−1). Rhizobacteria were isolated from saline soils, but the fungi were prepared from a microbial bank. Overall, ten isolates were purified, and three with promising growth-promoting properties were identified using phenotypic and molecular methods. The selected isolates belonged to the genera Pseudomonas (P. aeruginosa Ur83 and P. fluorescens Ur67) and Stenotrophomonas (S. maltophilia Ur52). Soil quality indices were found to decrease with increasing salinity, but inoculation with microorganisms alleviated this decline. Inoculation with plant growth-promoting rhizobacteria (PGPRs) increased basal respiration, substrate-induced respiration, microbial biomass carbon, acid and alkaline phosphatase activities, and carbon availability by factors of 1.37, 1.27, 1.83, 3.07, 1.29, and 1.11, respectively. These results show that inoculation with symbiotic microorganisms can improve agricultural soil quality under saline conditions and may thus be valuable in agriculture.

Effect of Organic Amendments along with Fly Ash on Soil Quality under Vertisol (Typic Haplustert) of India

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
R Saha ◽  
Kamlesh Malakar ◽  
VASSANDA COUMAR ◽  
J SOMASUNDARAM ◽  
M Mohanty
Keyword(s):  
Fly Ash ◽  
Soil Quality ◽  
Incubation Period ◽  
Microbial Biomass Carbon ◽  
Soil Amendments ◽  
Poultry Manure ◽  
Organic Amendments ◽  
Available N ◽  
Soil Microbial ◽  
Combined Application

An incubation study was conducted to characterize soil quality as affected by organic amendments (FYM, biochar and, poultry manure @ 25 t ha-1) along with or without fly ash (@ 22.4 t ha-1) in Vertisol. Physical and chemical parameters of soil quality like pH, EC, bulk density, porosity, moisture content, organic carbon and available N, P, K measured at the end of incubation period i.e. 10th week showed that combined application of soil amendments (FYM + fly ash, biochar + fly ash, poultry manure + fly ash) had significantly better results than individual application of the respective soil amendments. Soil microbial biomass carbon (SMBC) and dehydrogenase enzyme activity (DHA) increased steadily up to 6th weeks of incubation with a marginal decrease during last phase. At the end of incubation period (10th week), SMBC and DHA was highest in the soil amended with FYM + fly ash; T (476.6 mg/kg of soil and 10.28 μg TPF g-1 soil h-1). The soils treated with 5 organic amendments particularly FYM and poultry manure along with fly ash showed best performance in terms of soil quality improvement in Vertisol.

scholarly journals Potential role of compost mixed biochar with rhizobacteria in mitigating lead toxicity in spinach

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Muhammad Zafar-ul-Hye ◽  
Muhammad Tahzeeb-ul-Hassan ◽  
Muhammad Abid ◽  
Shah Fahad ◽  
Martin Brtnicky ◽  
...  
Keyword(s):  
Bacillus Amyloliquefaciens ◽  
Organic Amendments ◽  
Lead Toxicity ◽  
Acc Deaminase ◽  
Dry Weight ◽  
Plant Growth Promoting Rhizobacteria ◽  
Alcaligenes Faecalis ◽  
Growth And Yield ◽  
Pb Toxicity ◽  
Spinach Plant

Abstract Consumption of heavy metals, especially lead (Pb) contaminated food is a serious threat to human health. Higher Pb uptake by the plant affects the quality, growth and yield of crops. However, inoculation of plant growth-promoting rhizobacteria (PGPR) along with a mixture of organic amendments and biochar could be an effective way to overcome the problem of Pb toxicity. That’s why current pot experiment was conducted to investigate the effect of compost mixed biochar (CB) and ACC deaminase producing PGPR on growth and yield of spinach plants under artificially induced Pb toxicity. Six different treatments i.e., control, Alcaligenes faecalis (PGPR1), Bacillus amyloliquefaciens (PGPR2), compost + biochar (CB), PGPR1 + CB and PGPR2 + CB were applied under 250 mg Pb kg-1 soil. Results showed that inoculation of PGPRs (Alcaligenes faecalis and Bacillus amyloliquefaciens) alone and along with CB significantly enhanced root fresh (47%) and dry weight (31%), potassium concentration (11%) in the spinach plant. Whereas, CB + Bacillus amyloliquefaciens significantly decreased (43%) the concentration of Pb in the spinach root over control. In conclusion, CB + Bacillus amyloliquefaciens has the potential to mitigate the Pb induced toxicity in the spinach. The obtained result can be further used in the planning and execution of rhizobacteria and compost mixed biochar-based soil amendment.

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