Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

AGRICA ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 1-9
Author(s):  
Julianus Jeksen

This study was conducted to determine the effect bokashi fertilizer on the growth and yield of pepper plants, soil physical and chemical properties as well as the optimum dose of fertilizer bokashi.  The design used in this experiment is a randomized block design (RAK) to the single factor pattern consisting of five treatments, namely: B0: 0 tonnes ha-1, B1: 5 tonnes ha-1, B2: 10 ton ha-1, B3: 15 ton ha-1 and B4: 20 tonnes ha-1. The variables were observed in this study is was a high plant (cm), a number of leaves tan-1 (strands), leaf area (cm2), fresh weight of fruit tan-1 (g tan-1) and ha-1 (ton ha-1 ), the soil volume weight (bulk density) (g cm-3), total soil pore space (%), total soil N, P-available land, available K-land, C-organic soil and soil pH. The results showed a significant influence on the variable crop growth and yield of pepper plants. Bokashi fertilizer application also provides improved physical and chemical properties of soil. Bokashi fertilizer use 20 tonnes ha-1 is the optimum dose that increases the weight of fresh chilli ha-1 as much as 26.63 tons.


Author(s):  
E. A. Akpa ◽  
L. J. Agah

The research was carried out in the month of April, 2018 to determine the effect of solid (granular) and liquid (foliar) fertilizers application on the growth and yield of maize in soils of Obubra. Five (5) composite soil samples were collected at the depth of 0-20 cm for the analysis of physical and chemical properties before application of the fertilizers. The experimental layout was randomized Complete Block Design (RCBD) with three treatments and five replications in a plot area of 25 m x 20 m (500 m2) which corresponds to 0.05 ha-1. The plot was designed and blocked into subplots, each measuring 6 m x 4 m (24 m2). Each block was separated from the other with a distance of one meter (1 m) apart and between subplots 0.5 m apart. Three treatments made up of treatment one (T1) zero application at 0 kg ha-1, treatment two (T2) liquid (foliar) N.P.K 20:20:20 at the rate of 100 mil of N, 50 mil of P2O5, 33.3 mil of Mp ha-1 and treatment three (T3) solid (granular) N.P.K 20:20:20 at the rate of 44.4 kg of N, 40 kg of P2O5 and 33.3 kg of Mp  ha-1 were replicated five times making a total of fifteen (15) subplots. Parameters of plant heights and number of leaves were observed at 6 and 8 weeks after planting. Plant heights, number of leaves, number of cobs, weight of 1000 seeds in each subplot and weight of grain after shelling were analyzed respectively. Results on soil analyses showed that the soil texture was sandy loam with deficiencies in primary nutrients and other nutrients. On the plant heights, the result was significant (P≤0.05) and on the number of leaves, the result for 6 weeks was not significant (P≥0.05) while that of 8 weeks was significant (P≤0.05). On the number of cobs, 1000 seeds and weight of grain after shelling were also significant (P≤0.05). The solid (granular) fertilizer showed to be more effective than liquid (foliar) fertilizer and should therefore be recommended for the growth and yield of maize in the area.


2019 ◽  
pp. 68-73

The decline in soil organic matter, nutrient depletion, and loss of soil fertility due to soil degradation contribute to low agricultural productivity. Organic amend- ments (OAs) have the potentials to reverse soil degradation processes by improv- ing the soil's physical and chemical properties and consequently improve crop growth and yield performance. At Cranfield University, United Kingdom, a greenhouse study investigated the effects of Mushroom Compost, Anaerobic Di- gestate Waste, and Poultry Manure amendments applied at 10 t ha-1 and 30 t ha-1 equivalent rates on the physical and chemical properties of degraded soil. The treatments were laid out in the greenhouse in a completely randomized design replicated four times. The results showed that all the OA treatments significantly increased the soil water holding capacity, total porosity, and significantly reduced bulk density when compared with the un-amended control treatment. Further, the OA treatments showed significant increases in the soil Total-P, Olsen-P, Total-N, total oxides of N, ammonium-N, Available-K, and Available-Mg, relative to the control treatment. The results demonstrate the effectiveness of these OAs in im- proving soils’ physical and chemical properties, and so enhancing soil health and overall ecosystem functioning. The study demonstrated that these OAs improve the physicochemical properties of degraded so


2019 ◽  
Vol 8 (1) ◽  
pp. 114-119
Author(s):  
Olufemi Gabriel Dayo-Olagbende ◽  
Oluwawemimo Omowumi Akingbola ◽  
Gbolahan Saheed Afolabi ◽  
Babatunde Sunday Ewulo

Towards a more sustainable soil management through recycling of readily available weeds in Akure, Nigeria, different rates of Tithonia diversifolia (tithonia) were compared on a field trial to evaluate its effect on soil properties. The experiment was sited at two locations in South gate of the Federal University of Technology, Akure. Prior to the field establishment, a composite soil sample was collected and analyzed for physico-chemical properties. The sites were cleared and tilled. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replicates. The treatments consisted of three levels of tithonia application which are 0, 3 and 6 t ha-1. Each experimental unit size was 2 m x 2 m with 1 m alleyway. Maize (Zea mays L. var.TZB-SR) seeds were sown at a spacing of 75 cm by 25 cm and 10 were randomly sampled per plot for growth and yield parameters. Data were collected on maize yield and soil physical and chemical properties after harvest to ascertain sustainability of the mulch material after cropping. Application of tithonia mulch improved growth, and yield indices of maize as well as soil physical and chemical properties. The contents of soil total N, exchangeable cations, , CEC, Organic matter content, total porosity, moisture content and infiltration rate were found to significantly (p>0.05)  increase in treatments with tithonia mulch. The best result was from the application rate 6 tha-1 because it improved and left the soil conserved after harvesting maize. Similar trends were observed at the two sites despite variation in inherent soil properties.


2012 ◽  
Vol 524-527 ◽  
pp. 2139-2142
Author(s):  
Shu Li Wang ◽  
Chao Ma ◽  
Wei Bin Yuan

The soil physical and chemical properties of four densities (A:2500/hm2,B:3300/hm2,C:4400/hm2,D:6600/hm2) of hybrid Larch plantations, Larix olgensis plantation(E) and Quercus mandsurica forest(F) were studied in Jiangshanjiao forest farm of Heilongjiang province of China. Soil bulk density, soil porosity, total N, total P, available N and available P were affected significantly by plantation density in hybrid Larch plantations. The lowest surface soil bulk density was in density 2500/hm2. Soil porosity of density 2500/hm2and 3300/hm2was bigger than that of density 4400/hm2and density 6600/hm2. Total N, total P and available N of density 4400/hm2and 3300/hm2were higher than that of density 6600/hm2and density 2500/hm2. Total N, total P, available N and available P of hybrid Larch plantations were not lower than that of Larix olgensis plantation. The results of the soil physical and chemical properties under different densities of hybrid Larch plantations and different types of forest seems to confirm that hybrid Larch plantation did not decreased the soil fertility, and the hybrid Larch plantation with densities of 3300/hm2and 4400/hm2could be conductive to improving the soil quality. The results would provide the theories basis for manage the hybrid Larch plantations.


2019 ◽  
Vol 3 (1) ◽  
pp. 44
Author(s):  
Suli Suswana

<p>An application of biochar to the intensive weathered soils potentially can change physical and chemical properties of the soils, improved soil function and increased yield of crops. A meta-analyses evaluation showed a significant correlation between biochar and plants productivity,  that means there are benefits of biochar application to the soils on plants productivities, that was increased 10%.This experiment was used Randomized Completed Block Design with 8 treatments and 3 replications. The treatments are: contr), 20 ton biochar ha<sup>-1</sup>, 40 ton biochar ha<sup>-1</sup>, 50 ton biochar ha<sup>-1</sup>, 60 ton biochar ha<sup>-1</sup>, 10 ton biochar + 10 ton poultry litter ha<sup>-1</sup>, 20 ton biochar + 20 ton poultry litter ha<sup>-1</sup>, 30 ton biochar + 30 ton poultry litter ha<sup>-1</sup>.  The results showed biochar 20 ton ha<sup>-1</sup> could increase significantly of plant heigh, number of punicles per clump, and the weight dried straw per clump. Whereas, application combination 20-30 ton biochar ha<sup>-1</sup> + 20-30 ton poultry litter ha<sup>-1</sup> could increase amount of tillers per clump, amound of punicles per clump, and weight dried straw (total biomass) per clump significantly.</p>


2011 ◽  
Vol 47 (3) ◽  
pp. 477-488 ◽  
Author(s):  
A. O. ADEKIYA ◽  
S. O. OJENIYI ◽  
T. M. AGBEDE

SUMMARYExperimental data on tillage requirement of cocoyam (Xanthosoma sagittifolium) are needed to identify the most suitable tillage methods for managing the fragile Alfisols of the humid tropics to ensure sustained productivity. Hence, five tillage methods were compared as to their effects on soil physical and chemical properties, and growth and yield of cocoyam on an Alfisol at Owo in the forest-savanna transition zone of southwest Nigeria. The experiment consisted of five tillage methods: manual clearing (MC), manual ridging (MR), manual mounding (MM), ploughing + harrowing (P + H) and ploughing + harrowing twice (P + 2 H) were used for three years at two sites in a randomized complete block design with three replications. In the first two years (2007 and 2008), P + H produced the least soil bulk density and highest growth and yield, whereas in the third year (2009), MC produced the lowest soil bulk density and best performance of cocoyam. Manual clearing produced the best values of soil chemical properties in 2008 and 2009. Averaged over the three years, P + H, MR and MM had lower soil bulk density hence better growth and yield compared with P + 2 H and MC. Over the three years MC, MM, MR and P + H increased cocoyam cormel yield by 10, 21, 23 and 32%, respectively, over P + 2 H.The corresponding increases in corm yield were 7, 15, 13 and 21%, respectively. The multiple regressions revealed that bulk density and moisture content significantly influenced the yield of cocoyam. Soil chemical properties were not significant. Bulk density rather than soil chemical properties dictated the performance of cocoyam in an Alfisol of southwest Nigeria. Soil quality was degraded by P + 2H. For small farms, either MR or MM is recommended while P + H is recommended for large-scale farming of cocoyam.


2020 ◽  
Author(s):  
Mario Kirchhoff ◽  
Lars Engelmann ◽  
Lutz Leroy Zimmermann ◽  
Irene Marzolff ◽  
Manuel Seeger ◽  
...  

&lt;p&gt;The argan tree (Argania spinosa) populations, endemic to South Morocco, have been highly degraded. Although the argan tree is the source of the valuable argan oil and is protected by law, overbrowsing and -grazing as well as the intensification and expansion of agricultural land lead to tree and soil degradation. Young stands cannot establish themselves; undergrowth is scarce due to the semiarid/arid climate and thus, goats, sheep and dromedaries continually browse the trees. Canopy-covered areas decrease and are degraded while areas without vegetation cover between the argan trees increase.&lt;/p&gt;&lt;p&gt;On 30 test sites, 60 soil samples of tree and intertree areas were studied on their soil physical and chemical properties. 36 rainfall simulations and 60 single-ring infiltration measurements were conducted to measure potential differences between tree/intertree areas in their runoff/erosion and infiltration properties. Significant differences using a t-test were found for the studied parameters saturated hydraulic conductivity, pH, electric conductivity, percolation stability, total C-content, total N-content, K-content, Na-content and Mg-content. Surface runoff and soil erosion were not statistically significant, but showed similar trends due to the higher complexity of runoff formation. The soil covered by argan trees generally showed less signs of degradation than intertree areas. With ever-expanding intertree areas due to the lack of rejuvenation of argan trees a further degradation of the soil can be assumed.&lt;/p&gt;


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