scholarly journals The response of saline-sodic soils to reclamation using biological and organic amendments under arid regions of Egypt

2021 ◽  
Vol 247 ◽  
pp. 01047
Author(s):  
Mohamed Hafez ◽  
Alexander I. Popov ◽  
Mohamed Rashad
Keyword(s):  
Soil Ph ◽  
Arid Regions ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Control Treatment ◽  
Mineral Fertilizers ◽  
Sodic Soils ◽  
Sodic Soil ◽  
Spent Grain ◽  
And Control

The study focused on investigating the contribution of reclamation strategies of saline-sodic soils and their impacts on soil fertility characteristics. In this study, the soil treatments were denoted as: SG1 and SG2 (23.8 and 47.7 ton/ha of spent grain); TC1 and TC2 (23.8 and 47.6 ton/ha of compost); Azospirillium in inoculation with seed and soil (Az); Az + SG1 (Az+SG1); Az + TC1 (Az+TC1); mineral fertilizers (NPK); and control (CK). All treatments were mixed in pots with 30 kg soil. The results showed that reclamation with Az and SG2 treatments significantly affected soil pH, EC, and macronutrients. In contrast, no significant (P > 0.05) effects were found with the two compost levels and NPK treatments. The salt contents were maximal in the control treatment, while decreased with Az, SG2, and Az+SG treatments. However, SG2 application decreased the soluble Na+ concentrations in soil solution. The effect of organic and biological reclamations on chemical properties was in the following order: Az+SG > SG2 > Az > TC2 > Az+M > SG1 > TC1 > NPK > CK. Moreover, it positively impacted the salt contents, which improved soil chemical properties in the saline-sodic soil after three months of seed sowing in the greenhouse.

scholarly journals Influence of alfalfa residue and different-source biochars on the chemical properties of a saline-sodic soil

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Zahra Noori ◽  
Mohammad-Amir Delavar ◽  
Yaser Safari
Keyword(s):  
Soil Ph ◽  
Aluminum Sulfate ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Walnut Shell ◽  
Chemical Application ◽  
Sodic Soils ◽  
Sodic Soil ◽  
Spss Software ◽  
Regulatory Effects

A pot experiment was done aimed to improve the chemical properties of a saline-sodic soil using individual application of alfalfa residue and two biochars, produced from sugarcane bagasse and walnut shell and their concomitant application with gypsum, aluminum sulfate and mixture of these two chemical amendments. Organic and chemical amendments were added to the soil at the weighting ratio of 2.5% and as the soil gypsum requirement, respectively. After two months of incubation, soil samples were measured for soil pH, electrical conductivity (EC) and sodium adsorption ratio (SAR) and the results were analyzed by SPSS software applying ANOVA. The results showed that organic amendments caused a reduction in soil pH and enhanced soil EC and SAR; whereas addition of gypsum and/or aluminum sulfate with biochars intensified their regulatory effects. It can be concluded that application of walnut-shell biochar with mixture of gypsum and aluminum sulfate to the saline-sodic soils has the best efficiency to reclaim the chemical soil properties. Soil leaching, as a supplementary procedure, however, is necessary to complete the improving effects of organic and/or chemical application to the soil.

scholarly journals Effect of Potassium Humate and Micronic Sulfur on the Chemical Properties of Some Soils of Toshka, Egypt

2020 ◽  
pp. 1-9
Author(s):  
Atef A. A. Sweed ◽  
Ahmed A. M. Awad
Keyword(s):  
Soil Ph ◽  
Block Design ◽  
Chemical Properties ◽  
Agricultural Practices ◽  
Loamy Sand ◽  
Available P ◽  
Control Treatment ◽  
Soil Drainage ◽  
Potassium Humate ◽  
And Control

Low soil organic matter, low nutrient availability and the higher soil pH (more than 8) are the major problem of agricultural practices in region of Toshka. An incubation trial at October 2019 was conducted to investigate the effect of potassium humate (KH) and micronic sulfur (MS) on some chemical properties of different soils (sandy clay soils, loamy sand and sandy soils). The used amendments (KH and MS) were added to the studied soil at 4 levels of each amendment i.e. 0.0, 0.25, 0.50 and 1.0%. A two way randomized completely block design and provided with three replications. Studied parameters were included soil pH, EC, exchange Na and the content of available - P and K. Results showed that, the MS application at 1% level caused a significant decrease in soil pH values compared with the KH application and control treatment. These reductions were more pronounced in case of soil B (loamy sand). Also, KH application gave an increase on exchange Na and available-K. While MS application was cause an increased in soil EC and available-P in the three soils under study. Moreover, the increases in the percentage of available – K with added of KH were higher than added of MS for soils under study. While the percentages of available-P with added of KH were higher than with added of MS for studied soils. It may be recommended to add KH and MS at a rate of 1% to improve the soil chemical properties. But the effect of application from MS has greater than KH to increase dissolved sodium salts on the form of sodium sulfate, which facilitates disposal during soil drainage.

scholarly journals Reclaiming Tropical Saline-Sodic Soils with Gypsum and Cow Manure

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 57 ◽  
Author(s):  
Francisco Gonçalo Filho ◽  
Nildo da Silva Dias ◽  
Stella Ribeiro Prazeres Suddarth ◽  
Jorge F. S. Ferreira ◽  
Ray G. Anderson ◽  
...  
Keyword(s):  
Arid Regions ◽  
Crop Yields ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Water Infiltration ◽  
Soil Reclamation ◽  
Agricultural Crop ◽  
Cow Manure ◽  
Sodic Soils ◽  
Semi Arid

Saline-sodic soils are a major impediment for agricultural production in semi-arid regions. Salinity and sodicity drastically reduce agricultural crop yields, damage farm equipment, jeopardize food security, and render soils unusable for agriculture. However, many farmers in developing semi-arid regions cannot afford expensive amendments to reclaim saline-sodic soils. Furthermore, existing research does not cover soil types (e.g., Luvisols and Lixisols) that are found in many semi-arid regions of South America. Therefore, we used percolation columns to evaluate the effect of inexpensive chemical and organic amendments (gypsum and cow manure) on the reclamation of saline-sodic soils in the northeast of Brazil. Soil samples from two layers (0–20 cm and 20–40 cm in depth) were collected and placed in percolation columns. Then, we applied gypsum into the columns, with and without cow manure. The experiment followed a complete randomized design with three replications. The chemical amendment treatments included a control and four combinations of gypsum and cow manure. Percolation columns were subjected to a constant flood layer of 55 mm. We evaluated the effectiveness of sodic soil reclamation treatments via changes in soil hydraulic conductivity, chemical composition (cations and anions), electrical conductivity of the saturated soil-paste extract, pH, and the exchangeable sodium percentage. These results suggest that the combined use of gypsum and cow manure is better to reduce soil sodicity, improve soil chemical properties, and increase water infiltration than gypsum alone. Cow manure at 40 ton ha−1 was better than at 80 ton ha−1 to reduce the sodium adsorption ratio.

scholarly journals Evaluation of the Effects of New Environmental Additives Compared to Mineral Fertilizers on the Leaching Characteristics of Some Anions and Cations under Greenhouse Plant Growth of Saline-Sodic Soils

2020 ◽  
Vol 14 (1) ◽  
pp. 246-256
Author(s):  
Mohamed Hafez ◽  
Alexander I. Popov ◽  
Mohamed Rashad
Keyword(s):  
Plant Growth ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Mineral Fertilizers ◽  
Organic Additives ◽  
Sodic Soils ◽  
Organic Cultivation ◽  
Leaching Characteristics ◽  
Spent Grain ◽  
Anions And Cations

Aims: The aim of this study was to determine and monitor the influences of organic and biological additives compared to mineral fertilizers on leaching characteristics of anions and cations, also to know more about the ability of these additives to make complexes with dissolved and toxic salts to decrease soil salinity. Background: Salt-affected soils comprise of saline and sodic soils which differ in origin, physico-chemical properties and the constraints to plant growth. Due to the presence of excess soluble salts (e.g. sodium (Na+) and chlorides (Cl-)). Methods: Ten treatments were established, including two levels of spent grain (environmental organic wastes from the beer industry), S1(10 g of spent grain / kg soil) and S2 ( 20 g of spent grain / kg soil); two levels of compost M1(10 g of compost / kg soil) and M2 ( 20 g of compost / kg soil); mixed M1 with S1 (M1S1); inoculation of Azospirillum brasilense (A1); inoculation A1 with S2 (A1S1); inoculation A1 with M1 (A1M1); 20:20:20 of N, P, and K fertilizers (NPK), and control (CK, without any additives). All treatments were mixed with 30 kg soil pots under greenhouse conditions, corn (Zea mayz L.) seeds were sown in the soil pots. The most relevant nitrogen and salt in soil leachates were collected and analysed every 20 days for 100 days. The soil leachates were collected under plant growth from pots by closed system. Results: The result revealed that organic additives such as A1 and S2 treatments effectively decreased soil pH, soil EC, and reduced NaCl concentration in soil leachates. The Ca2+ and K+ cations in the soil leachates were not stable at high levels of organic additives. Soluble NO3- and NH4+ were significantly lower in A1, S2, and A1S1 treatments than in NPK, M2, and CK treatments. Soil treatment with A1 and S2 significantly improved the soil chemical environment by increasing the Cation Exchange Capacity (CEC) and soluble and exchangeable-K+ and thus limited entry of Na+ into the exchange complex in soil and consists complex with soluble Na+ as sodium humate form. Conclusion: In the final, the highest nitrogen use efficiency with the least NO3- and NH4+ losses in saline-sodic soil was also found in S2 and A1 treatments. Moreover, under this bio-organic fertilization way, NO3- concentrations in soil leachates was outside of danger of damaging the environment. Thus, spent grain with Azospirillum were suggested to be the optimal fertilizer with the lowest nitrogen leaching losses, best yield, quality, and the least groundwater environmental risk under corn (Zea mays L.) organic and bio-organic cultivation comparing with chemical cultivation.

Effect of Ethephon and Packaging Practices On Ripening of Mango cv. Maldah

2021 ◽  
Vol 19 (1) ◽  
pp. 155-163
Author(s):  
S Sapkota ◽  
D Kc ◽  
H Giri ◽  
M Saud ◽  
M Basnet ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Control Treatment ◽  
Quality Performance ◽  
Plastic Packaging ◽  
Randomized Design ◽  
Acid Ratio ◽  
Ethephon Treatment ◽  
Completely Randomized Design ◽  
And Control ◽  
Juice Content

The present research was conducted on two factor Completely Randomized Design (CRD) with eight treatments and three replications. A set of experiments were carried out to evaluate the effect of postharvest ethephon treatment and packaging on ripening of mango cv. Maldah. The treatments consisted of ripening agent i.e., ethephon and control treatment under different packaging condition i.e., fiber with hole, fiber without hole, plastic with hole and plastic without hole. The result revealed that different packaging condition and ripening agents influenced the ripening behavior of mango. The highest TSS (15.26), sugar-acid ratio (23.66) and juice content (126.05) were recorded with fiber (without hole) and the lowest TSS (12.60), sugar-acid ratio (9.01) and juice content (116.05) with plastic (without hole). The highest TA (1.44) was recorded with plastic (without hole) and the lowest (0.66) with fiber (without hole). Similarly, the highest BT (2.83) was recorded with fiber (with hole) and the lowest (1.66) with plastic (without hole). Firmness, sweetness, TSS and juice content were the highest with the interaction effect of fiber bag (without hole) and ethephon treatment. In conclusion, mango fruits with ethephon treatment packed in fiber bag (without hole) enhances quality and ripening of mango whereas under controlled condition and without hole plastic packaging mangoes had low quality performance in terms of physio-chemical properties. SAARC J. Agric., 19(1): 155-163 (2021)

The effects of mulch (Olea europea and Pinus halepensis) on burned soils: A preliminary study in Adriatic coast (Croatia)

2020 ◽  
Author(s):  
Domina Delač ◽  
Paulo Pereira ◽  
Ivica Kisić
Keyword(s):  
Soil Properties ◽  
Soil Ph ◽  
Pinus Halepensis ◽  
Control Treatment ◽  
Summer Drought ◽  
Significant Difference ◽  
Adriatic Coast ◽  
Olea Europea ◽  
Preliminary Study ◽  
And Control

<p><strong>The effects of mulch (<em>Olea europea</em> and <em>Pinus halepensis</em>) on burned soils: A preliminary study in Adriatic coast (Croatia)</strong></p><p>Delac, Domina<sup>1*</sup>; Pereira, Paulo<sup>2*</sup>; Kisic, Ivica<sup>1</sup></p><p><sup>1</sup>University of Zagreb, Faculty of Agriculture, Department of General Agronomy, Svetosimunska cesta 25, 10000 Zagreb, Croatia. (*[email protected])</p><p><sup>2</sup>Mykolas Romeris University, Environmental Management Laboratory, Ateitis street 20, LT-08303, Vilnius, Lithuania (*[email protected])</p><p> </p><p>In the recent decades the frequency and intensity of summer drought periods is increasing in Adriatic coast. These changes in climate increase the vulnerability to wildfires. Wildfires can change soil physical and chemical properties. However, these effects can be mitigated by mulching. The aim of this work is to study the effects of mulch (<em>Olea europea</em> and <em>Pinus halepensis</em>) on fire affected soils. The wildfire occurred on 28 July 2019 and affected an area of about 900 ha in Dalmatia, near Adriatic Coast (43°45'06.0"N 15°56'02.9"E with an elevation of 105 m a.s.l.).  The mean annual temperature is 15.8 °C, and the annual precipitation is 800 mm. It was affected agricultural land with dominant culture <em>Olea europea</em> and abandoned grassing where dominates <em>Pinus halepensis</em>. Soils are classified as <em>calcocambisols</em>. Twenty-five days after the fire, two plots (5 treatments per plot) were established and covered with <em>Olea europea</em> and <em>Pinus halepensis</em> mulch. A control plot was established as well. Soil were sampled (0 – 5 cm), twenty- days after fire (August, 2019), before mulch application, and then 3 months after fire (November, 2019). A total of 15 samples were collected per treatment (45 each sampling date). The soil properties analysed were soil pH, soil organic matter (SOM), mean weight diameter (MWD) to express aggregate stability, and soil water repellency (SWR) measured with water drop penetration time method (WDPT) in different fractions (2 – 1 mm; 1 – 0.5 mm, 0.5 – 0.25 mm, and <0.25 mm). Soil pH was not significantly different among sampling dates and treatments. SOM was significantly different among sampling dates for <em>Olea europeae</em> treatment and control. <em>Olea europeae</em> treatment had a significantly higher SOM then <em>Pinus halepensis</em> and control treatment. MWD was significantly higher within <em>Olea europeae</em> treatment. Within <em>Pinus halepensis</em> and control treatment no significant difference was observed. The soil was classified as slightly water repellent (5 – 60 seconds) in <em>Olea europeae</em> soil finer fraction (0.5 – 0.25 mm and <0.25) in both sampling dates. In <em>Pinus halepensis</em> treatments and control, soil was wettable (<5 seconds), and no significant difference was observed among sampling date. Future sampling and analysis will be conducted during one year to estimate the effect of <em>Olea europeae</em> and <em>Pinus halepensis</em> mulch on soil properties.</p><p><strong>Keywords: </strong>Wildfire, <em>Olea europeae</em><strong>, </strong><em>Pinus halepensis</em>, mulch.</p><p> </p><p><strong>Acknowledgments</strong></p><p>This work was supported by Croatian Science Foundation through the project "Influence of Summer Fire on Soil and Water Quality” (IP-01-2018-1645).</p>

scholarly journals Reusing of Treated Wastewater by Membrane Bioreactorin Irrigation

2014 ◽  
Vol 8 (4) ◽  
pp. 25-30
Author(s):  
Azzam H. Al-Hadithy ◽  
Mahdi S. Al-Rubai ◽  
Mahdi Sh. Jaafar ◽  
A.A. Hasson ◽  
G.H. FadeL ◽  
...  
Keyword(s):  
Waste Water ◽  
Electrical Conductivity ◽  
Plant Height ◽  
Soil Ph ◽  
Block Design ◽  
Waste Water Treatment ◽  
Chemical Properties ◽  
Treated Wastewater ◽  
Control Treatment ◽  
All Treatment

Membrane Bio Reactor(MBR) methods is considered as one of the most advanced used technology in waste water treatment. The aim of this technology is to obtain high quality treated waste water. This study conducted to investigate the ability of using of sewage water from zaafrania city for irrigation and their effect on corn growth and some of soil chemical properties which include electrical conductivity and soil pH in extract soil paste and the micro nutrient content in soil and plant which include Fe, Mn, Zn, Cu, Cd, Pb. Three levels of wastewater were used 0, 50, 100% in two stages, the three levels of wastewater ( without soil fertilization ) were used in the first stage, where 21.8 Kg P/D +80 N Kg/D was added to the soil as fertilizer in the control 0% treatment and 10.9Kg P/D +40 Kg N/D were added to 50 and 100% levels in the second stage. Corn seeds were planted in 10kg plastic pots in Completely Randomized Block Design in three replicates. The results refer to a high significant increase in plant height, fresh and dry weight for all treatments in comparison with control treatment. The low add level of wastewater 50%+ half of fertilizer recommendation gives a significant increase of plant height and fresh and dray weight. The results showed a high increased of electrical conductivity for 50, 100% wastewater added levels for both stages compared with control treatment. The high add level 100% gives high significant increase of electrical conductivity compared with the low level of the wastewater. Whereas the values of soil PH were close to the neutral for all treatment. The result showed a significant increase in micro nutrients content (which include Fe, Mn, Zn, Cu, Cd, Pb) in soil and plant for all treatment compared with control treatment, this increased was continues with the increase of additional level of wastewater. However all the micro nutrient was within the allowed natural limits and not reached the toxic limits in soil and plant.

Effects of site preparation on ponderosa pine (Pinusponderosa), associated vegetation, and soil properties in south central Oregon

1986 ◽  
Vol 16 (3) ◽  
pp. 612-618 ◽  
Author(s):  
Darrell W. Ross ◽  
William Scott ◽  
Ronald L. Heninger ◽  
John D. Walstad
Keyword(s):  
Ponderosa Pine ◽  
Chemical Properties ◽  
Site Preparation ◽  
Control Treatment ◽  
Strong Negative Correlation ◽  
Total N ◽  
Nutrient Levels ◽  
Soil Zone ◽  
South Central ◽  
And Control

Eight years after installation, six site preparation treatments were compared for effects on soil chemical and physical properties, nonconiferous vegetation, and the survival and growth of planted ponderosa pine (Pinusponderosa Laws.). Treatments included a logged-only control, ripping, brush blading, disking, chemical spraying (herbicide), and chemical spraying followed by disking. The brush-blade and chemical–disk treatments showed the greatest reduction in nutrient levels (total N, S, and C, and extractable P) compared with the control within the lower zone of soil sampled (15–25 cm depth). The chemical-only and disk-only treatments resulted in smaller decreases in nutrient levels, while ripping appeared to have only minor effects on soil chemical properties. Similar trends were noted in the upper soil zone (0–10 cm), although the differences were not statistically significant. Brush blading and both disking operations increased soil bulk density in the upper soil zone, but not in the lower soil zone. Aboveground biomass of shrubs was highest on the control treatment, followed by the rip, disk, brush-blade, chemical, and chemical–disk treatments. Pine survival was 78% or better for all treatments except the rip and control. The chemical–disk and chemical treatments resulted in the best height growth, followed by the disk, brush-blade, rip, and control treatments. A strong negative correlation existed between the amount of brush and pine biomass after 8 years. This study illustrates the importance of weed control to achieve maximum survival and early growth of planted pines in south central Oregon.

scholarly journals Composition of Zingiber officinale Roscoe (Ginger), Soil Properties and Soil Enzyme Activities Grown in Different Concentration of Mineral Fertilizers

Horticulturae ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 43
Author(s):  
Dilfuza Jabborova ◽  
Ravish Choudhary ◽  
Abdulahat Azimov ◽  
Zafarjon Jabbarov ◽  
Samy Selim ◽  
...  
Keyword(s):  
Soil Properties ◽  
Soil Enzymes ◽  
Chemical Properties ◽  
Zingiber Officinale ◽  
Mineral Elements ◽  
Mineral Fertilizers ◽  
Soil Enrichment ◽  
Zingiber Officinale Roscoe ◽  
Ginger Rhizome ◽  
And Control

Ginger is rich in different chemical compounds such as phenolic compounds, terpenes, polysaccharides, lipids, organic acids, minerals, and vitamins. The present study investigated the effect of mineral fertilizers on the content of mineral elements in the rhizomes of Zingiber officinale Roscoe, soil enzymes activity, and soil properties in Surkhandarya Region, Uzbekistan. To the best of our knowledge, the present study is the first in Uzbekistan to investigate the mineral elements of ginger rhizome inhabiting Termez district, Surkhandarya region. A Field experiment was conducted at the Surkhandarya experimental station research Institute. Four treatments have been studied (Control with no fertilizers (T-1), N75P50K50 kg/ha (T-2), N125P100K100 kg/ha (T-3) and N100P75K75 + B3Zn6Fe6 kg/ha (T-4)). Results showed that T-4 treatment significantly increased ginger rhizome K, Ca, P, Mg, Fe, Na, Mn, Zn, Si, Li, and V content as compared to all other treatments and control. T-3 treatment significantly increased Mo, Ga, and Ag content in comparison to other treatments. Soil enzymes showed a significant increase for all treatments against control, while T-4 treatment has recorded the highest enzyme activity in comparison to all other treatments in urease, invertase, and catalase content. Soil chemical properties have significantly changed for all treatments against the non-cultivated soil and the zero fertilizers plantation with variation among different treatments. Results showed that ginger root is rich in minerals and can be used as a great potential for nutritional supplements and soil enrichment. This study suggest that combination of macro-microelements have the potential to increase the content of mineral elements in the rhizomes of ginger in field conditions.

scholarly journals Effects of four organic amendments on soil physiochemical properties and yield of maize (Zea mays) and cowpea (Vigna unguiculata) intercrop in Awka, southeastern Nigeria

Agro-Science ◽  
2021 ◽  
Vol 20 (2) ◽  
pp. 49-56
Author(s):  
A.O. Onunwa ◽  
C.J. Nwaiwu ◽  
J.E. Nwankwor ◽  
C.E. Emeh ◽  
C.O. Madueke ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Bulk Density ◽  
Soil Ph ◽  
Poultry Manure ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Available Phosphorus ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

Effects of four organic amendments on some soil physical and chemical properties were investigated in Awka, Anambra State in southeastern Nigeria. Over the years, use of synthetic materials in crop production has been a common practice globally. The attendant detrimental effects of the chemicals used in the formulation of these synthetics on animal and human health as well as the environment has made researchers to look out for a better agronomic practice that would not only improve productivity but at the same time sustain a healthy environment. Sole maize, sole cowpea and maize-cowpea intercrop (study area conventional practices) were planted using four soil organic amendments viz: cassava peel (CP), poultry manure (PM), pig waste (PW) and rice husk (RH) at the rate of 20 t ha–1 with the fifth as the control. The treatments were laid out in a 3 × 5 factorial in randomized complete block design and replicated four times. Data on the treatments’ effects on the selected soil physical properties (bulk density, total porosity, soil moisture) and chemical properties (soil pH, available phosphorus, cation exchange capacity (CEC), organic carbon, exchangeable bases and exchangeable acidity) were subjected to factorial analysis of variance using GenStat 2006 Edition. Results indicated that for sole maize, the amendments had significant effect onexchangeable Al3+and Na+; organic carbon, soil pH, available phosphorus and CEC but had no significant effect on Ca2+, H+, Mg2+ and K+ as compared to the control. For sole cowpea, compared to the plots with no amendment (control), all the chemical parameters analyzed differed significantly except organic carbon. Whereas, for maize-cowpea intercrop the treatments had no significant effect on Al3+, Na+, K+ and available phosphorus but differed significantly in exchangeable H+, Ca2+, Mg2+, organic carbon, soil pH, and CEC. There was a decrease in bulk density following the amendment. For sole maize, sole cowpea and maizecowpea intercrop; bulk density, total porosity and moisture content of the amended plots were significantly (p< 0.05) influenced. Organic amendments also significantly improved the growth and yield of maize and cowpea in both the sole and intercrop systems. Generally, poultry manure resulted in higher plant height,number of leaves and leaf area for maize; vine length, number of branches for cowpea as compared with other amendments. Hence, poultry manure was the most effective organic amendment in improving the soil physical and chemical properties as well as the growth and yield of cowpea and maize. Key words: Growth, maize-cowpea intercrop, soil physical and chemical properties, soil organic amendments

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