Residual effects of phosphorus and soyabean crop on maize in the Guinea savanna of West Africa

2009 ◽  
Vol 57 (1) ◽  
pp. 87-94
Author(s):  
I. Ogoke ◽  
A. Togun
Keyword(s):  
Dry Matter ◽  
Fertilizer Application ◽  
Residual Effects ◽  
Available P ◽  
Triple Superphosphate ◽  
Guinea Savanna ◽  
Previous Crop ◽  
P Rate ◽  
P Application ◽  
Total Soil N

Two seasons of cropping were carried out at three sites in the Guinea savanna to evaluate the residual effects of soyabean on maize. The experiment was laid out as a splitplot design in a randomized complete block with three replications. In the first season, four soyabean varieties with a fallow treatment (control) received phosphorus (P) applied as triple superphosphate (20% P) at the rates of 30 and 60 kg P ha −1 . Maize was grown in these plots in the second season without fertilizer application. At all sites, regardless of the previous crop, total soil N remained low (<1.5 g kg −1 ). Available P was affected by the P rate in the previous year at all sites. From initial values ranging from 5.2–16.2 mg kg −1 in the first season, available P significantly (p<0.05) increased in the second season to 9.8–42.8 mg kg −1 when 30 or 60 kg P ha −1 was applied, compared to 7.7–18.6 mg kg –1 at no P application. Relative to no P application in the previous year, the application of 60 kg P ha −1 significantly increased total dry matter at 6 weeks after planting by 19%, total harvest dry matter by 28%, and grain yield by 37%.

scholarly journals THE INFLUENCE OF DATE OF PLANTING AND FERTILIZER APPLICATION ON GROWTH COMPONENTS OF COLUMBUS GRASS (SORGHUM ALMUM)

2021 ◽  
Vol 24 (1) ◽  
pp. 62-69
Author(s):  
I. R. Muhammad ◽  
M. S Kallah ◽  
E. O. Otchere ◽  
J. P. Otchere ◽  
J. P. Alawa ◽  
...  
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Plant Density ◽  
Fertilizer Application ◽  
N Application ◽  
Plant Vigour ◽  
Northern Guinea Savanna ◽  
Guinea Savanna ◽  
Plant Densities ◽  
High Tillering

Trials were conducted at Gangora in the northern Guinea Savanna ecological zone of Nigeria during the 1990 and 1991 rainy seasons. The effects of date of planting (4th,14th, 24th June and 4th  July) and levels of nitrogen fertilizer (0, 50,100, 150 and 200kg/ha) on growth components of Sorghum almum  were investigated. Planting in mid-June (14th June) in 1990 and early-July (4th July) in 1991 resulted in superior stand established and dry matter yields (p<0.05) than other dates. In mid-June and early-July planting 14 day post-planting, plant densities were 7.0 and 9.0 culms/m2 while plant heights were 20.4 and 11.3cm for the respective years. It had high tillering capacity and irrespective of date of planting (except for early-June planting) plant densities by 56 days post-planting (DPP) were greater than 100 culms/m2. Plant height at this stage were greater than 100 culms/m2 and were generally above 200cm. ninety DPP the pasture was at full bloom/hard dough stage. Dm yields then ranged from 8.0 to 11.4 tDM/ha in 1990 and 9.6 to 14.7 tDM/ha in 1991. Similarly seed yield for the respective years were 894.7 and 836.3 kg/ha. Fertilizer application (p<0.05) plant vigour, tillering and dry matter yield up to the highest N applied. In the first years trial, plant density at 35 days post-planting ranged from 12.0 to 29.0 culms/m2 while in the second year the ranged was 13.0 to 26.0 culms/m2. The corresponding values at 56 DPP (i.e 42 days following N application) were 32.0 to 81.0 and 45.0 to 101.0 culms/m2. Dry matter yields rose steadily from 6.5 to 12.5 tDM/ha in 1990 and from 8.9 to 13.6 tDM/ha in 1991 as fertilizer was increased 0 to 200 kgN/ha. Seed yield during the same period for the respective years varied from 416.0 to 753.0kg/ha. This study has shown that planting between mid-June and early-July with fertilize application of 100 to 200 khN/ha favour S. almum establishment and production in the northern Guinea Savanna of Nigeria

scholarly journals Effect of Phosphate Rock on the Growth and Yield of Wheat (Triticum aestivum L.) under Old Brahmaputra Floodplain Soils

2012 ◽  
Vol 10 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Md. Nurul Huda Al Mamun ◽  
Md. Safinur Rahman ◽  
N. M. Jahangir ◽  
M. Safiqul Moula ◽  
Kazi Nazrul Islam
Keyword(s):  
Phosphate Rock ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Residual Effects ◽  
Rabi Season ◽  
Net Benefit ◽  
Previous Crop ◽  
Randomized Complete Block Design ◽  
Brahmaputra Floodplain

A study was conducted to determine the direct and residual effects of phosphate rock (PR) on the growth and yield of wheat cv. Kanchan during Rabi season of 2004-2005 at the Bangladesh Agricultural University farm, Mymensingh. The experiment was designed with four treatments and was laid out in a Randomized Complete Block Design (RCBD) with four replications. The treatments were: T1: control (0 kg P ha-1), T2: PR (26 kg P ha-1), T3: TSP (26 kg P ha-1), and T4: PR (210 kg P ha-1 applied in previous crop to cover 6 succeeding crops). Dry matter yield at panicle initiation (PI) stage was significantly influenced by the treatments. Effective tillers hill-1 and grains panicles-1 varied significantly with P treatments. The highest grain yield (3.10 t ha-1) and straw yield (5.54 t ha-1) were found in T3 treatment. Economic analysis demonstrated that the highest net benefit of Tk. 24,788 ha-1 was obtained in T3 treatment which was followed by Tk. 22,964 ha-1 and Tk.12,292 ha-1 in T4 and T2, respectively. The highest net benefit was obtained from T3 treatment due to higher grain and straw yields.DOI: http://dx.doi.org/10.3329/agric.v10i1.11062The Agriculturists 2012; 10(1): 31-37 

scholarly journals Residual effect of pig slurry on common carpet grass pasture

2017 ◽  
Vol 21 (6) ◽  
pp. 374-378
Author(s):  
Daiane C. K. Albuquerque ◽  
Simone M. Scheffer-Basso ◽  
Pedro A. V. Escosteguy ◽  
Karen D. Brustolin-Golin ◽  
Valdirene Zabot ◽  
...  
Keyword(s):  
Nitrogen Uptake ◽  
Dry Matter ◽  
Block Design ◽  
Residual Effect ◽  
Fertilizer Application ◽  
Residual Effects ◽  
Organic N ◽  
Pig Slurry ◽  
Dry Matter Yield ◽  
Gradual Release

ABSTRACT This study investigated the residual effects of pig slurry (PS) applied to common carpet grass pasture (Axonopus affinis) for two years (September 2008-March 2010) on dry matter yield and forage-nitrogen uptake from October 2010-May 2011. A field experiment was conducted in a randomized complete block design with four replications. The treatments were 102, 204, 306, 408, and 510 m3 ha-1 pig slurry applied for two years; one mineral nitrogen rate (1,250 kg ha-1 ammonium nitrate) for two years; and no nitrogen fertilization (control). The pasture was cut at intervals of 48, 34, 43 and 69 days, which corresponded to 266, 300, 343, and 412 days after the last fertilizer application, respectively. Dry matter yield increased by 398 kg ha-1 for each 100 m3 of PS applied, the equivalent of 317 and 564 kg ha-1 for each 100 kg ha-1 of inorganic and organic N applied, respectively. The residual effect of PS on dry matter yield and forage-nitrogen uptake ranged from 11-45% and 8-40%, respectively, indicating a gradual release and availability of N in PS, which can help reduce the amounts of nitrogen applied to pasture.

Effectiveness of the water-insoluble component of triple superphosphate for yield and phosphorus uptake by plants

2003 ◽  
Vol 140 (3) ◽  
pp. 267-274 ◽  
Author(s):  
A. E. JOHNSTON ◽  
I. R. RICHARDS
Keyword(s):  
Dry Matter ◽  
Water Solubility ◽  
Relative Effectiveness ◽  
Phosphorus Uptake ◽  
Organic Matter Content ◽  
Available P ◽  
Organic Carbon Content ◽  
Triple Superphosphate ◽  
Agronomic Effectiveness ◽  
The Uk

The water-insoluble phosphorus (P) component (‘residue source’) was separated from four commercial triple superphosphate (TSP) products and its agronomic effectiveness evaluated. Two of the TSP products were sourced from the USA and two from the UK. Effectiveness was measured using a pot trial technique with ryegrass as the test crop. The residue sources were evaluated on 13 soils varying in key properties: readily plant-available P, texture, pH and organic matter content. Four of the soils were from Germany, one from Spain, five from the UK and three from France. Grass dry-matter yield and P offtake were measured at every cut on every soil. For both of these variables, significant responses to applied P were obtained on all soils. Mono-calcium phosphate (MCP) was used as the comparative P source and effectiveness of the residue sources was estimated relative to that of MCP. Using dry-matter data, the residue sources were 44–87% as effective as MCP; P offtake data provided corresponding estimates of 35–79%. Both methods of estimation indicated the same ranking of residue sources in terms of relative effectiveness, those derived from USA products being more effective than those derived from UK products. The ranking was the same for all soils. The effectiveness of the residue sources relative to that of MCP appeared little affected by measured soil properties: texture, pH, available P or organic carbon content. The results indicate there is little difference in agronomic effectiveness of TSP products with water solubility greater than 85%.

scholarly journals Investigating the effect of previous treatments on wheat biomass over multiple spatial frequencies

2010 ◽  
Vol 7 (9) ◽  
pp. 2739-2747 ◽  
Author(s):  
A. E. Milne ◽  
M. T. Castellanos ◽  
M. C. Cartagena ◽  
A. M. Tarquis ◽  
R. M. Lark
Keyword(s):  
Spatial Frequency ◽  
High Frequency ◽  
Previous Experiment ◽  
Fertilizer Application ◽  
Residual Effects ◽  
Wheat Crop ◽  
Previous Crop ◽  
Spatial Frequencies ◽  
The Relationship ◽  
Applied Nitrogen

Abstract. In this study we use the maximum overlap discrete packet transform (MODWPT) to investigate residual effects on wheat biomass of fertigation treatments applied to a previous crop. The wheat crop covered nine subplots from a previous experiment on melon response to fertigation. Each subplot had previously received a different level of applied nitrogen. Many factors affect wheat biomass, causing it to vary at different spatial frequencies. We hypothesize that these will include residual effects from fertilizer application (at relatively low spatial frequencies) and the local influence of individual plants from the previous melon crop (at high frequency). To test this hypothesis we use the MODWPT to identify the dominant spatial frequencies of wheat biomass variation, and analyse the relationship to both the previous fertilizer application and the location of individual melon plants in the previous crop. The MODWPT is particularly appropriate for this because it allows us first to identify the key spatial frequencies in the wheat biomass objectively and to analyse them, and their relationship to hypothesized driving factors without any assumptions of uniformity (stationarity) of wheat-biomass variation. The results showed that the applied nitrogen dominated the wheat biomass response, and that there was a noticeable component of wheat-biomass variation at the spatial frequency that corresponds to the melon cropping. We expected wheat biomass to be negatively correlated with the position of melons in the previous crop, due to uptake of the applied nitrogen. The MODWPT, which allows us to detect changes in correlation between variables at different frequencies, showed that such a relationship was found across part of the experiment but not uniformly.

Characteristics of Dry Matter Accumulation and Effect of Fertilizer Application in Cassava

2013 ◽  
Vol 39 (1) ◽  
pp. 126
Author(s):  
Qiao-Yi HUANG ◽  
Shuan-Hu TANG ◽  
Jian-Sheng CHEN ◽  
Fa-Bao ZHANG ◽  
Kai-Zhi XIE ◽  
...  
Keyword(s):  
Dry Matter ◽  
Fertilizer Application ◽  
Dry Matter Accumulation

Factors affecting the yield of winter cereals in crop margins

2000 ◽  
Vol 135 (4) ◽  
pp. 335-346 ◽  
Author(s):  
A. WILCOX ◽  
N. H. PERRY ◽  
N. D. BOATMAN ◽  
K. CHANEY
Keyword(s):  
Soil Compaction ◽  
Dry Matter ◽  
Field Experiments ◽  
Polynomial Regression ◽  
Negative Relationship ◽  
Fertilizer Application ◽  
Winter Cereal ◽  
Edge Field ◽  
Winter Cereals ◽  
Non Linear

Yields of arable crops are commonly lower on the crop margins or headlands, but the nature of the relationship between yield and distance from the crop edge has not been clearly defined, nor have the reasons for lower marginal yields. Surveys of 40 winter wheat headlands were carried out in 2 years to determine how yield changed with distance, and what factors might influence this relationship. Two field experiments were also conducted over 3 years in winter cereal headlands, in which the effect of distance was measured under conservation headland and conventional (fully sprayed) management.Yields in the headland surveys varied from 0·8 to 10·2 t/ha. An inverse polynomial regression model was fitted to yield and weed data. Best fits were obtained by using separate parameters for each site. Adjusting yields to take account of weed dry matter improved the non-linear fit between yield and distance from crop edge. Field experiments provided similar results but the non-linear relationship was not as apparent.There was a negative relationship between soil compaction, as measured by a cone penetrometer, and yield in one field experiment, where soil density values were relatively constant. No relationship was found between pattern of nitrogen fertilizer application and yield. Conservation headland management resulted in lower yield at one experimental site, especially in the third year, but not at the other site. Where yields were affected, weed dry matter was higher in conservation headland plots than in fully sprayed plots.Although greater weed competition appears to account for at least part of the observed yield reductions on headlands, the role of other factors, particularly soil compaction, needs further study. Increased weed infestation may be an indirect result of reduced crop competition caused by other adverse conditions.

scholarly journals Influence of Lime and Phosphorus Application Rates on Growth of Maize in an Acid Soil

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Peter Asbon Opala
Keyword(s):  
Dry Matter ◽  
Acid Soil ◽  
Interactive Effects ◽  
Available P ◽  
Dry Matter Yield ◽  
Exchangeable Acidity ◽  
Application Rates ◽  
Randomized Design ◽  
Lime Application ◽  
Phosphorus Application

The interactive effects of lime and phosphorus on maize growth in an acid soil were investigated in a greenhouse experiment. A completely randomized design with 12 treatments consisting of four lime levels, 0, 2, 10, and 20 t ha−1, in a factorial combination with three phosphorus rates, 0, 30, and 100 kg ha−1, was used. Maize was grown in pots for six weeks and its heights and dry matter yield were determined and soils were analyzed for available P and exchangeable acidity. Liming significantly reduced the exchangeable acidity in the soils. The effect of lime on available P was not significant but available P increased with increasing P rates. There was a significant effect of lime, P, and P by lime interactions on plant heights and dry matter. Without lime application, dry matter increased with increasing P rates but, with lime, dry mattes increased from 0 to 30 kg P ha−1but declined from 30 to 100 kg P ha−1. The highest dry matter yield (13.8 g pot−1) was obtained with a combined 2 t ha−1of lime with 30 kg P ha−1suggesting that lime application at low rates combined with moderate amounts of P would be appropriate in this soil.

Comparison of rotations in which barley for grain follows woollypod vetch or forage barley

1987 ◽  
Vol 108 (3) ◽  
pp. 609-615 ◽  
Author(s):  
I. Papastylianou ◽  
Th. Samios
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
N Balance ◽  
Dry Matter Yield ◽  
Soil N ◽  
Fertilizer N ◽  
Total Soil ◽  
Using Data ◽  
Total Soil N

SummaryUsing data from rotation studies in which barley or woollypod vetch were included, both cut for hay and preceding barley for grain, it is shown that forage barley gave higher dry-matter yield than woollypod vetch (3·74 v. 2·92 t/ha per year). However, the latter gave feedingstuff of higher nitrogen concentration and yield (86 kg N/ha per year for vetch v. 55 kg N/ha per year for barley). Rainfall was an important factor in controlling the yield of the two forages and the comparison between them in different years and sites. Barley following woollypod vetch gave higher grain yield than when following forage barley (2·36 v. 1·91 t/ha). Rotation sequences which included woollypod vetch had higher output of nitrogen (N) than input of fertilizer N with a positive value of 44–60 kg N/ha per year. In rotations where forage barley was followed by barley for grain the N balance between output and input was 5–6 kg N/ha. Total soil N was similar in the different rotations at the end of a 7-year period.

Enhancing Soil Fertility through Intercropping, Inoculation and Fertilizer

2016 ◽  
Vol 59 (1) ◽  
pp. 1-5
Author(s):  
Muhammad Arshad Ullah ◽  
Nazir Hussain ◽  
Helge Schmeisky ◽  
Muhammad Rasheed
Keyword(s):  
Plant Uptake ◽  
Field Experiments ◽  
Fertilizer Application ◽  
Research Centre ◽  
Vicia Sativa ◽  
Soil N ◽  
N Content ◽  
Seed Inoculation ◽  
Crop Harvest ◽  
Total Soil N

The present study was conducted to investigate the effects of intercropping grass (Panicummaximum) and legumes (Vicia sativa and cowpeas) alone or coupled with inoculation or fertilizer on soilfertility. The study comprised of two field experiments conducted under rain fed conditions for two years(June, 2005 to September, 2007) at National Agriculture Research Centre, Islamabad, Pakistan. In oneexperiment intercropping (33, 50 and 67%) of grass and legumes alone as well as coupled with seedinoculation were studied while, same set of treatments was combined with fertilizer application at the ratesof 25, 75 and 50 kg/ha (N, P2O5 and K2O) in the second experiment. Total soil N increased by 0.008% dueto symbiotic fixation in addition to plant uptake under best treatment when compared with grass alonewhile, soil organic matter increased by 0.19%. After crop harvest soil N content was determined to behigher in all the treatments of the experiment compared with growing grass alone. Legumes caused rhizobialN fixation that caused an increase in soil N. Similarly, intercropping and inoculation increased this soilcharacteristic that was found to be non-significant in the first crop but later on became significant, especiallywhen intercropping of grass with legumes after seed inoculation was investigated or fertilizer wassupplemented to the crops. Thus, not only grass used the symbiotically fixed N by companion legumesbut also enhanced the soil N content. The effect of fertilizer was not measurable statistically in case of soilorganic matter. This parameter, in general, was not affected significantly when assessed after first cropharvest. Nevertheless, legumes alone or intercropped within grass increased this important soil constituent.Inoculation proved further beneficial in this regard but combination of intercropping (especially 67%)either with seed inoculation or application of fertilizer was found as the best technique for increasing soilorganic matter.

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