Evaluation of sawah rice management system in an inland valley in southeastern Nigeria. I: Soil chemical properties and rice yield

2008 ◽  
Vol 6 (3) ◽  
pp. 299-307 ◽  
Author(s):  
J. C. Nwite ◽  
C. A. Igwe ◽  
T. Wakatsuki
Keyword(s):  
Management System ◽  
Rice Yield ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Southeastern Nigeria ◽  
Inland Valley

scholarly journals Liming Effects of Sawdust Ash and Lime on Sunflower (Helianthus annuus L.) Yield in Acidic Soil of Southeastern Nigeria

2019 ◽  
pp. 1-11
Author(s):  
C. V. Ogbenna ◽  
V. E. Osodeke
Keyword(s):  
Soil Ph ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Acidic Soil ◽  
Soil Chemical Properties ◽  
Growth And Yield ◽  
Available Phosphorus ◽  
Yield Data ◽  
Southeastern Nigeria ◽  
Head Weight

Aim: A pot experiment was carried out to determine the effect of sawdust ash and lime (Ca(OH)2) on soil characteristics and yield of sunflower in acidic soil of southeastern Nigeria. Study Design: The experiment was laid out in split-plot design, using sawdust ash (0, 1, 2, 3, 4 t ha-1) as the sub plot and lime (0, 0.5, 1.0, 1.5 t ha-1) as the main plot. Place and Duration of Study: Study was conducted outdoors at Michael Okpara University of Agriculture Umudike, Nigeria, during the 2010 planting season. Materials and Methods: Treatment combinations were applied to the 60 buckets containing soil, mixed thoroughly and watered adequately. After 1 week of treatment application, two sunflower seeds were planted and later thinned to one seedling per bucket. Plant growth and yield data were collected. Pre planting and post-harvest soil samples were collected and analyzed for soil properties. Results: Results showed that with the exception of organic carbon there was significant effect of treatments on all soil chemical properties. Lime and sawdust ash (SDA) as single and combined treatments significantly increased total nitrogen (P=0.05), available phosphorus (P<0.010), and base saturation (P<0.012). The interaction between SDA and lime significantly (P=0.05) increased total exchangeable bases and effective cation exchange capacity, while soil pH was significantly increased (P=0.05) by single applications. The increases in soil chemical properties led to significant positive response of the sunflower. With the exception of number of leaves, other plant parameters (Plant height, stem diameter, head weight, 50 seed weight, head diameter) had significant increases for sawdust ash alone at P=0.05. Correlation studies showed positive significant relationship between soil pH and sunflower yield. Conclusion: The study showed that sunflower performed best at the combination of 3 tha-1 SDA and 1.5 t ha-1 lime producing a mean head weight of 45.4 g.

scholarly journals Effects of NP-SR Fertilizer Composition and Water Logging on Soil Chemical Properties and N Fertilizer Efficiency in Paddy Field

2021 ◽  
Vol 9 (1) ◽  
pp. 10-19
Author(s):  
Tiara Kartika Sari ◽  
Muhammad Rif’an ◽  
Sakhidin Sakhidin
Keyword(s):  
Rice Yield ◽  
Block Design ◽  
Chemical Properties ◽  
N Fertilizer ◽  
Soil Chemical Properties ◽  
Nitrogen Efficiency ◽  
Fertilizer Efficiency ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Food Commodity

Rice is the primary food commodity in Indonesia. To increase the rice production, urea fertilizer has been excessively used, specifically on marginal land. However, it has no desired effect on the plant’s Nitrogen uptake due to volatilization. Previous studies suggest the use of zeolite to be mixed with urea to reduce the volatilization rate. This study aimed to determine the effect of six NP-SR (Nitrogen Phosphorus Slow Release) fertilizer compositions (without NP-SR; 20.69-0; 19.7-5; 17.27-10; 15.9-15; and 18.94-20) on soil chemical properties, nitrogen efficiency, and paddy rice yield on Ultisols at three waterlogging levels (0.5 cm, 3 cm, and 5 cm). The study was an experiment arranged in a Randomized Complete Block Design (RCBD) consisting of two factors, which were waterlogging levels and NP-SR fertilizer compositions. The results showed that waterlogging treatments significantly affected soil chemical properties in the initial vegetative and harvest phases. It can be concluded that the treatment of flooding (up to 3 cm) and fertilizer (NP-SR of 15.90-15) application could significantly reduce the volatilization rate, increase the efficiency of N fertilizer, and increase rice yield.

scholarly journals Effect of different doses of Ipil-Ipil (Leucaena leucocephala) (LAM.) de wit. tree green leaf biomass on rice yield and soil chemical properties

2015 ◽  
Vol 2 (3) ◽  
pp. 385-394
Author(s):  
Niloy Paul ◽  
Mohammad Kamrul Hasan ◽  
Md Nasir Uddin Khan
Keyword(s):  
Grain Yield ◽  
Leucaena Leucocephala ◽  
Rice Yield ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Green Leaf ◽  
Leaf Biomass ◽  
Rice Grain ◽  
Total N ◽  
Different Doses

A field experiment was conducted to find out the effect of different doses of ipil-ipil (Leucaena leucocephala ) (Lam.) de Wit. tree green leaf biomass on rice yield and soil chemical properties. Four different treatments such as T0: Recommended fertilizer dose (Urea 195 kg/ha, TSP 50 kg/ha, MOP 142 kg/ha, Gypsum 75 kg/ha and Zinc Sulphate 4 kg/ha), T1: 5 t/ha, T2: 7.5 t/ha, and T3: 10 t/ha ipil-ipil tree green leaf was used in this study in a Randomized complete block design with three replications. The results showed that the treatment T3 was performed better than recommended fertilizer dose in case all yield contributing characters of rice except grain yield. The highest (5.29 t/ha) rice grain yield was obtained in recommended fertilizer dose followed by 10 t/ha, 7.5 t/ha and 5 t/ha ipil-ipil tree green leaf biomass amendment having 4.80, 3.16 and 2.36 t/ha respectively. The highest grain yield that was obtained from recommended fertilizer dose was 10.21% higher compared to the highest dose (10 t/ha) of ipil-ipil tree green leaf biomass. It was mentioned that among the different doses of ipil-ipil tree green leaf biomass 10 t/ha performed the best over others. The ipil-ipil tree green leaf biomass was also significantly influenced on some essential nutrient status which is very important for rice production. The highest amount of total N, available P, exchangeable K and available S were found in the treatment T3 and the lowest in the treatment T1. Therefore, it can be concluded that the ipil-ipil tree leaf has beneficial effects and could be combined with inorganic fertilizer for sustainable crop yield and maintaining soil fertility.Res. Agric., Livest. Fish.2(3): 385-394, December 2015

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