Groundnut variety introductions and breeding objectives in the sandy rainlands of the Sudan · 1969
Effects of soil ameliorants on lime-induced chlorosis, growth and nodulation in groundnut (Arachis hypogaea L.) · 1986
Effect of Applying Biological Phosphorus Fertilizer on Peanut · 2000
The Influence of N, P and K Fertilizers to Peanut Yield in the Black Sajong Soil · 2000
Response of rainy-season groundnut (Arachis hypogaea) to varying fertility levels and bioformulations · 2001
cites 1 paper here
Effect of Potash Fertilizer on Growth and Yield in Peanut · 2002
Effects of Fe-fertilizer composition and application methods on the iron chlorosis correction of peanut · 2003
Effects of organic manure and microelement fertilizer on the output and quality of peanut · 2003
cited by 1 paper here
Effects of Cooperation Fertilizing B, Cu, Mo and Zn on Peanut · 2003
Production and Use of Compost and Vermicompost in Sustainable Farming Systems · 2004
INFLUENCE OF GYPSUM AND NPK RATES APPLICATION ON YIELD AND SOME NUTRIENTS UPTAKE OF PEANUT PLANTS GROWN IN NEWLY RECLAIMED SANDY SOIL · 2004
Effect of Zn,B, Mo and Ca fertilizer on the yield and quality of peanut · 2005
Responses of peanut to Nano-calcium carbonate · 2005
Effect of some organic wastes associated with multi-biofertiliser on peanut plants in sandy soil · 2005
Effect trials of specialty Sbased compound fertilizer for varieties of crops · 2006
Effect of Combined Application of Organic and Inorganic Fertilizers on Peanut Production · 2006
Effects of Humic Acid Fertilizer and Amino Acid Fertilizer on Growth and Yield of Peanut · 2007
Effect of Three Kind Controlled Release Blend Bulk Fertilizers on the Agronomic Characters and Quality in Peanut · 2008
Effect of sulfur fertilizer on agronomic characters and yield of peanut · 2008
Effects of Different Coated Controlled-release Fertilizers on Peanut’s Biological Traits and Nutrient Content · 2009
- positive
- positive
- no effect
Effects of Different Fertilizer Types on the Yield and Quality of Peanut · 2009
Preliminary Report of "3414" Peanut Field Test in Changtu City · 2009
Study on the Effects of Organic Fertilizer from Domestic Waste on Three Crops · 2009
Evaluation of Boron Levels and Organics on Soil Nutrients and Yield of Groundnut in Coastal Sandy Soil · 2010
Variation in Response to Calcium Fertilization among Four Runner‐Type Peanut Cultivars · 2010
Effect of Controlled Release Fertilizer on Physiological Characteristics,Yield and Quality of Peanut in Slope Field · 2010
Effect of Bio-Organic and Mineral Nitrogen Starter Dose on Growth and Production of Groundnuts (Arachis hypogaea L.) in Malakal Area · 2011
Effects of Fertilization on Plant Trait,Yield and Quality of Peanut under Continuous Cropping · 2011
Effects of silicon,calcium on growth and yield of the peanut variety Zhengnonghua 9 · 2011
"3414"Fertilizer Trial of Peanut and Analysis on the Optimal Fertilization Amounts · 2011
INTEGRATED ORGANIC NUTRIENT SUPPLY SYSTEMS ON GROWTH AND YIELD OF GROUNDNUT (ARACHIS HYPOGAEA L.) · 2012
cited by 1 paper here
Effect of different sources of nutrient application on productivity, nutrient uptake and economics of groundnut (Arachis hypogaea L.) in Kolasib district of Mizoram · 2012
Effects of Controlled-Release Fertilizers on Leaf Physiology of Different Peanut Varieties · 2012
Experiment Effect of Amino Acid Liquid Fertilizer on Oil Crop · 2012
Effect of Kappaphycus alvarezii SLF treatment on Seed germination, Growth and Development of seedling in some Crop plants · 2012
Crop Productivity and Nutrient Dynamics in a Shrub‐Based Farming System of the Sahel · 2013
Effects of Controlled-release Fertilizers of Different Ratio Level on Yield and Main Agronomic Traits of Peanut on Hilly Red Soil · 2013
Effects of Calcium Fertilizer Application on Peanut Physiological Characteristics and Yield under Drought Stress · 2013
Effects of Phosphorus Fertilization on Dynamic Growth and Development and Yield Components of Peanut · 2013
- positive
- positive
- positive
- positive
- no effect
Effects of different fertilization treatments on the yield and quality of peanut · 2013
ISSN 2277-386X Original Article Enhancement of groundnut yield by soil amendments · 2013
Effect of seed soaking periods in varying levels of fertilizers on growth, yield and yield components of peanut · 2014
- positive
- positive
- positive
- positive
- positive
- positive
Growth, net photosynthesis and seed yield of groundnut (Arachis hypogeaeL.) as influenced by organic sources of nutrient · 2014
The use of local substrates in the production of legume nodulating bacteria inoculants for Sub- Saharan Africa: Preliminary results · 2014
Influence of physical seed enhancement techniques on storability of groundnut Kernals (Arachis hypogaeaL.) cv. VRI 2 · 2014
Influence of Biofertilizer Mixed Flower Waste Vermicompost on the Growth, Yield and Quality of Groundnut (Arachis hypogea) · 2014
Preliminary report on effect of applying oyster shell powder on peanut · 2014
Effects of Nitrogen Application Methods on the Growth and Yield of Continuous Cropping Peanut · 2014
Physiological and Physical Quality of Seeds from Peanut Seeds and Plants under the Influence of Fertilizer and Biostimulant · 2015
Phosphorus Fertilization Under Different Land Preparation Methods and Performance of Groundnut (Arachis hypogea L.) in Rainforest Zone of Southern Nigeria · 2015
Effect of gypsum on growth and yield of groundnut (Arachis hypogaea L.). · 2015
Effect of Calcium and Sulphur Based Fertilizers on Yield and Quality of Ground Nut in Red and Lateritic Belt of Bankura District of West Bengal · 2015
Crop response to mineral fertilizer, vermicompost and density in cassava + groundnut intercrop · 2015
[Effects of calcium fertilizer application on peanut growth, physiological characteristics, yield and quality under drought stress]. · 2015
[Effects of water stress and nitrogen fertilization on peanut root morphological development and leaf physiological activities]. · 2015
Endophytic occupation of legume root nodules by nifH-positive non-rhizobial bacteria, and their efficacy in the groundnut (Arachis hypogaea) · 2016
Evaluation of Rhizobium Inoculation in Combination with Phosphorus and Nitrogen Fertilization on Groundnut Growth and Yield · 2016
PENGARUH PEMBERIAN PUPUK NT45 DAN PUPUK FOSFAT TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KACANG TANAH · 2016
cited by 1 paper here
LAND PRODUCTIVITY IMPROVEMENT THROUGH GIVING FERTILIZER N, P, K AND PLANTING TIME OF PEANUT (ARACHIS HYPOGAEA L.) IN THE INTERCROPPING SYSTEM WITH MAIZE (ZEA MAYS L. ) · 2016
Effect of sago waste, manure and straw biochar on peanut (Arachis hypogaea L.) growth and yield on an Ultisol of Southeast Sulawesi · 2017
Impact of Different Sources of Nutrients on Growth and Yield Attributes of Groundnut (Arachis hypogaea L.) · 2017
Effect of LD slag application on yield attributes, yield and protein content of groundnut kernel in acid soil of Bhubaneswar, Odisha · 2017
Organic and inorganic fertilizer application enhances the effect of Bradyrhizobium on nodulation and yield of peanut (Arachis hypogea L.) in nutrient depleted and sandy soils of Ethiopia · 2017
cited by 1 paper here
Effect of Charred Rice Husk on Rainfed Groundnut for Water Retention and Nutrient Management (Arachis hypogaea L.) · 2017
Determination of bris soil properties using chemical fertilizer under different light intensity · 2017
Effect of balanced fertilizer managementpractices on factor of productivity on Groundnut(Arachis hypogaea L.) cultivation · 2017
Effect of organic manure (cow manure) addition and soil moisture variation on the growth of groundnut (Arachis hypogaea) on BRIS Soil. · 2017
Preparation and Characterization of Silica Nanoparticles from Rice Straw Ash and its Application as Fertilizer · 2017
Productivity, Nutrient, and Soil Enzymes Influenced with Conservation Agriculture Practices in Peanut · 2018
Dry Matter Production and Allocation in Groundnut Under Drought and Foliar Nutrition · 2018
Studies on site specific nutrient management (SSNM) on growth and yield of groundnut (Arachis hypogaea) under irrigation in southern Karnatak · 2018
Liquid Biofertilizer and Inorganic Nutrients Effect on Physiological, Quality Parameters and Productivity of Kharif Groundnut (Arachis hypogaea L.) · 2018
cited by 2 papers here
Response of Organic Plant Nutrient Sources on Productivity and Profitability of Groundnut (Arachis hypogaea L.) and Soil Fertility under Humid Zone of Southern Rajasthan · 2018
Growth parameters and yield of groundnut as influenced by integrated nutrient management at coastal zone of Karnataka · 2018
Integrated management of collar rot and pod rot diseases in groundnut · 2018
PENGARUH APLIKASI PUPUK KANDANG AYAM CAIR TERHADAP PERTUMBUHAN TANAMAN KACANG TANAH (Arachis hypogea L.) PADA LAHAN GAMBUT DI DESA TETAP JAYA KECAMATAN MARBAU KABUPATEN LABUHANBATU UTARA · 2018
Photosynthetic Characteristics and Uptake and Translocation of Nitrogen in Peanut in a Wheat–Peanut Rotation System Under Different Fertilizer Management Regimes · 2019
Effect of Compost Additives and Application Time of Phosphorus in different Methods on Growth, Productivity and Quality of Peanut in Sandy Soils · 2019
cites 1 paper here
PENGARUH DOSIS PUPUK KANDANG AYAM TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN KACANG TANAH (Arachis hypogea L.) DI DESA REROROJA KECAMATAN MAGEPANDA KABUPATEN SIKKA · 2019
Influence of mulching, hydrogel and nutrient management on seed quality parameters of summer groundnut (Arachis hypogaea L.) · 2019
- positive
- positive
- positive
- positive
- positive
Effect of nano iron oxide on growth and drymatter production of groundnut (Arachis hypogaea L.) in a calcareous vertisol · 2019
Performance of groundnut (Arachis hypogaea) under different phosphorus management options in semi-arid environment of Rajasthan · 2019
Effect of biochar on soil physical and hydrological properties, and on growth, yield, quality of rabi groundnut (Arachis hypogaea L.) in red sandy loam soils of North Coastal Andhra Pradesh · 2019
Soil and foliar application of humic acid on productivity of groundnut(Arachis hypogea L.) · 2020
cited by 1 paper here
Improvement in Growth Parameters, Yield Attributes and Economics of Groundnut (Arachis hypogaea L.) through Graded Levels of Hydrogel Application · 2020
PENGARUH DOSIS PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL SERTA SIFAT FISIK DAN KIMIA TANAH PADA TANAMAN KACANG TANAH (Arachis hypogaea L.) · 2020
- positive
- positive
- no effect
Performance of peanut under organic and inorganic nutrition · 2020
Effect of agronomic management practices on the performance of rabi summer groundnut (Arachis hypogaea) under rice (Oryza sativa)-groundnut cropping system · 2020
Effect of Integrated Nutrient Management on Yield and Yield Attributes and Quality Groundnut (G -7) · 2020
Seeds Treatment Using Trichoderma spp. Formulated in Biosluryy and Vermicompost to Induct the Resistance of the Peanut (Arachis hypogaea. L) Diseases · 2020
EFFECT OF MINERAL NITROGEN AND BIOFERTILIZER APPLICATION ON NODULATION EFFICIENCY AND GROWTH OF PEANUT PLANTS GROWN ON A SANDY SOIL TREATED WITH ORGANIC FERTILIZERS · 2020
Yield response of groundnut (Arachis hypogaea) to phosphate enriched animal manures and foliar fertilization of micronutrients · 2020
Productivity efficiency of two animal manure sources on intercropped maize-groundnut in Ishiagu, Ebonyi State in the derived savanna, Nigeria · 2020
Effects of drip irrigation and topdressing on dry matter weight, mineral nutrient absorption and yield of pod-bearing stage in peanut · 2020
cites 1 paper here
Performance of groundnut to different soil fertility amendments in coastal sandy soil · 2021
Response of Soil and Peanut (Arachis hypogaea L.) on the Application of Several Local Microorganism and Manures · 2021
Mineral Fertilizer Use for Optimal Groundnut Production in the Sudano-Guinean and Sudanian Zones of Benin · 2021
Evaluation of soils fertility, growth, nutrient uptake and yield traits of peanut under indigenous and effective microorganism fertilizers in sandy ferralitic soils in Douala, Cameroon · 2021
cited by 1 paper here
Effect of Cow Manure on Growth and Production of Peanut Plants in Sub Optimal Land · 2021
Organic Waste as Fertilizer to Increase the Number of Peanuts (Arachis hypogaea L.) Flowers · 2021
Effect of Vermicompost and Foliar Spray of Zinc on Growth, Quality and Productivity of Groundnut (Arachis hypogaea L.) · 2021
cited by 1 paper here
THE IMPACT OF BIOFERTILIZERS AND CHEMICAL FERTILIZERS ON TWO GROUNDNUT CULTIVARS PRODUCTIVITY UNDER THE SEMI-ARID TROPICS OF SUDAN · 2021
The Effect of Top G2 Liquid Organic Fertilizer and SP-36 Fertilizer on Peanut Plant Growth and Yield · 2021
Impact of Organic and Inorganic Fertilizers on Morphological and Biochemical Components of Arachis hypogaea L. · 2021
Bio-fertilizers’ protocol for controlling root knot nematode Meloidogyne javanica infecting peanut fields · 2021
Influence of different micronutrients on growth and yield of groundnut (Arachis hypogaea) in coastal sandy soils · 2021
Optimized preparation and high-efficient application of seaweed fertilizer on peanut · 2022
- positive
- positive
- positive
- positive
- positive
- positive
Effect of Integrated Nutrient Management on Growth, Yield Attributes, Yield and Quality Parameters of Groundnut (Arachis hypogaea) in an Acidic Upland of Odisha · 2022
RESPONSE OF DIFFERENT TYPE OF FERTILIZERS ON GROWTH OF TWO GROUNDNUT (Arachis hypogaea L.) VARIETIES IN KATSINA A SUDAN SAVANNAH · 2022
Green and Blue Water Footprint for Groundnut (Arachis hypogaea L.) under Irrigation Scheduling and Nutrient Management Practices · 2022
Influence of potassium on growth, yield and nutrient uptake of groundnut (Arachis hypogaea) cv. TMV 13 · 2022
Peanut Plant (Arachis hypogaea) Productivities In Exs Merapi Pyroclastic Land With Different Fertilizers · 2022
Effect of Different Irrigation Rates and Organic Amendments on Sandy Loam Soil Productivity for Peanut Crop · 2022
APPLICATION OF LIQUID ORGANIC FERTILIZER AND NPK Blue ON THE GROWTH OF PEANUT (Arachis hypogea L.) · 2022
Preparation, Characterization and Evaluation of Nano Phosphorus Foliar Application on Peanut Production under Sandy Soil · 2022
Effect of organic foliar nutrition on growth and yield of groundnut (Arachis hypogaea L.) · 2022
Impact of Nanoscale Zinc Oxide Particle on the Growth, Yield and Soil Properties under Agency Area of Andhra Pradesh · 2022
PENGARUH APLIKASI BOKASHI BERBASIS VEGETASI SEKUNDER DAN KOTORAN SAPI TERHADAP PERTUMBUHAN TANAMAN KACANG TANAH (Arachis hypogaea L.) PADA LAHAN SUBOPTIMAL · 2022
RESPON PERTUMBUHAN KACANG TANAH (Arachis hypogaea L.) PADA BERBAGAI DOSIS BOKASHI LIMBAH AMPAS TAHU DAN PUPUK FOSFAT · 2022
cites 1 paper here
Combination of organic soil amendments and weed control to optimize the growth and yield of peanuts in sandy soils in coastal areas · 2023
Reduction in Nitrogen Rate and Improvement of Nitrogen Use Efficiency without Loss of Peanut Yield by Regional Mean Optimal Rate of Chemical Fertilizer Based on a Multi-Site Field Experiment in the North China Plain · 2023
Improvement in yield of peanut (Arachis hypogaea L.) with combination treatments of bio-organic fertilizers · 2023
Impact of Various Organic Fertilizerson the Growth, Yield, and Soil Environmentof Peanuts Subjected to ContinuousCropping Obstacles · 2023
Comparative study of the effectiveness of nano-sized iron-containing particles as a foliar top-dressing of peanut in rainy conditions · 2023
Performance of Groundnut (Arachis hypogaea L.) as Influenced by Integrated Nutrient Management Under Fertigation · 2023
cites 1 paper here
Effect of Date of Sowing and INM (Integrated Nitrogen Management) on Growth and Yield of Summer Groundnut (Arachis hypogaea L.) · 2023
- positive
- positive
- positive
- positive
Comparing the Effects of Indigenous, Effective Microorganisms and NPK Fertilizers on Soil Fertility and Productivity of Groundnut in the Western Region of Cameroon · 2023
cites 1 paper here
The Impact of Chitosan and Tithonia Diversifolia Compost on the Growth and Yield of Peanut Plants (Arachis hypogaea L.) · 2023
Response of peanut quality and yield to chicken manure combined with Rhizobium inoculation in sandy soil · 2023
Response of Banggai Yam Plant (Dioscorea alata) and Peanut (Arachys hypogaea) to Liquid Organic Fertilizer in Intercropping system · 2023
Effect of different organic sources and mulching on growth, yield and quality of groundnut (Arachis hypogaea L.) · 2023
- positive
- positive
- positive
- positive
cites 1 paper here
Effect of Integrated Application of Bio-Fertilizer and Soil Amendments on Growth Parameters of Groundnut (Arachis hypogaea L.) · 2023
Effect of Date of Sowing and Integrated Nitrogen Management on Growth and Yield of Summer Groundnut (Arachis hypogaea L.) · 2023
- positive
- positive
- positive
- positive
cites 1 paper here
Effect of Foliar Spray of Iron (Fe)- Fortified Humic Substances and Humic Acid on Growth, Nodulation and Yield of Groundnut (Arachis hypogaea L.) in a Calcareous Vertisol · 2023
cites 1 paper here
Impact of Variety and Variable Rates of Cow Dung on Growth Characters of Groundnut in Abraka, Nigeria · 2023
Integrated Effect of Organic Amendments and Chemical Fertilizers on yield of Groundnut and Soil Health Under Rainfed Condition · 2023
Influence of Organic, Inorganic, and Foliar Grade Fertilizers on the Growth and Yield of Groundnut · 2023
Effect of micronutrients and bio-fertilizers on growth, yield and quality of kharif Groundnut (Arachis hypogaea L.) · 2023
Exchangeable Al, peanut growth, and nodulation on Ultisol Bogor as affected by ameliorant proportion of lime and organic matter · 2024
Slow-release fertilisers increased microflora and nitrogen use efficiency and thus promoted peanut growth and yield · 2024
Effect of Humic Acid from Vermicompost and Commercial Source on Growth, Yield and Quality of Groundnut (Arachis hypogea L.) · 2024
Phosphate fertilization, biofertilizer and Bacillus sp. in peanut cultivation under salt stress · 2024
RHIZOSPHERE MICROBIOME, SOIL ENZYMES AND GROUNDNUT YIELD AS INFLUENCED BY ADDITION OF BIOCHAR AND FERTILIZERS IN IRRIGATED ALFISOL OF NORTH COASTAL ANDHRA PRADESH · 2024
Effect of Sulphur and Foliar Application of Micronutrients on Yield and Nutrient Uptake of Groundnut (Arachis hypogaea L) · 2024
Boron nutrition improves peanuts yield and seed quality in a low B sandy soil · 2024
Effect of bio-fertilizers and organic manures on growth and yield of groundnut (Arachis hypogea L.) · 2024
Effect of Dolomite on Growth, Productivity, Economics of Groundnut and Soil Properties in alfisols · 2024
The Influence of Nano-fertilizers Priming on Augmenting Groundnut (Arachis hypogaea L.) Growth, Yield and Quality · 2024
Do Groundnut as Preceding Crop Reduce Fertilizer Requirement to the Succeeding Blackgram?-Results of Field Investigation · 2024
Response of Nitrogen Management on Growth and Yield of Groundnut (Arachis hypogea L.) · 2024
Seed biopriming with different bioagents to minimize collar rot disease of groundnut (Arachis hypogea L.) · 2024
Impact of Phosphorus and Sulphur Levels on Growth Parameters of Groundnut (Arachis hypogaea L.) · 2024
Influence of vermicompost and gypsum on the growth and yield of groundnut (Arachis hypogaea L.) · 2024
Growth Characteristics, Yield Attributes and Quality of Groundnut (Arachis hypogaea L.) as Affected by Integrated Nutrient Management and Moisture Conservation Practice · 2024
Optimizing Nutrient Management for Enhanced Performance in Kadiri Lepakshi Groundnut · 2024
Assessing the Effects of Integrated Nutrient Management on Groundnut Root Growth and Post-Harvest Soil Properties in Brown Forest Soil of South Odisha · 2024
Effect of organic sources and seaweed extract on growth, yield and economics of summer groundnut · 2024
Effect of Irrigation Methods and Fertilizer Application on Growth and Yield Parameters, Yield, Economics and Water Use Efficiency in Groundnut · 2024
Effects of Tithonia diversifolia biomass soil amendments on three annual crops (peanut, maize and soybean) grown in succession in an intercropping system with bananas in Ultisol · 2024
AZOTOBACTER AND CHEMICAL FERTILIZER FOR IMPROVING GROUNDNUT YIELD IN FIELD EXPERIMENT · 2024
Growth and yield of peanut on peat soil of different dolomite lime and shrimp waste Liquid Organic Fertilizer (LOF) levels · 2024
Respon Pertumbuhan Dan Hasil Tanaman Kacang Tanah (Arachis hypogaea L.) Terhadap Pemberian Pupuk Mikoriza Dan Ekstrak Rebung Bambu · 2025
Effect of land configuration and nutrient management on growth analysis and yield of kharif groundnut (Arachis hypogaea L.) · 2025
Effect of moss extract along with vermicompost and neem seed cake on the growth and yield of Arachis hypogaea L. · 2025
Growth and yield response of groundnut cultivars to selected rates of phosphorous and soil amendments in the Southern Guinea Savanna of The Gambia · 2025
Effects of Multi-Year Maize–Peanut Intercropping and Phosphorus Application on Rhizosphere Soil Properties and Root Morphological and Microbial Community Characteristics · 2025
Management of Soil Borne Diseases in Groundnut through IDM Modules · 2025
Impact of Sowing Dates, Planting Geometry and Fertility Levels on Growth and Yield of Groundnut (Arachis hypogaea L.) in the Foothill Conditions of Nagaland · 2025
Productivity of Groundnut (Arachis hypogaea L.) under Different Sowing Times, Utrient Supply Levels and Planting Geometry in Sub-Humid Tropical Environment · 2025
Effect of nutrient management in kharif groundnut-chickpea cropping sequence on growth, yield attributes, yield and quality of kharif groundnut under organic farming · 2025
Effect of novel organic liquid on improving the yield and economics of groundnut in rainfed condition · 2025
Influence of Organic and Chemical Fertilizers on Growth and Yield of Groundnut in Zinc Stressed Soil · 2025
Responses of Groundnut to Different Levels of Nutrients with Gypsum in Typical Alfisols under Irrigated Condition · 2025
Effect of Organic Manure and Bio Fertilizer on Growth and Yield of Groundnut (Arachis hypogea L.) · 2025
Response of indigenous low cost smart fertigation system on growth, physiology, root characters and yield of groundnut (Arachis hypogaea L.) · 2025
Isolation and Identification of Bacillus aryabhattai M2C: Its Effects With Vermicompost on Yield and Nutrients of Peanut ( Arachis hypogaea L.) · 2025
Effect of Mineral, Bio-Fertilizer and Brassinolide Spraying on The Growth and Oil Percentage of Peanut (Arachis Hypogaea L.) · 2025
Integrated Management of Aspergillus flavus and Aflatoxin Contamination in Groundnut Using Organic Amendments and Trichoderma harzianum · 2026
Develop sustainable coffee-based farming model using cash crops production · 2026
Effects of Municipal Phosphocomposts on Groundnut Growth, Yield and Residual Soil Phosphorous · 2026
Organic fertilizer altering root trait and microbial composition to promote the compactness tolerance of peanut · 2026
Synergistic effects of poultry manure and 2,4-epibrassinolide on soil properties and performance of groundnut in the rainforest of Nigeria · 2026