Optimizing sowing density-based management decisions with different nitrogen rates on smallholder maize farms in Northern Nigeria

2020 ◽  
Vol 56 (6) ◽  
pp. 866-883
Author(s):  
Adnan Aminu Adnan ◽  
Jan Diels ◽  
Jibrin Mohammed Jibrin ◽  
Alpha Yaya Kamara ◽  
Abdulwahab Saliu Shaibu ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Planting Density ◽  
Economic Returns ◽  
Yield Data ◽  
N Fertilizers ◽  
Scenario Analyses ◽  
Maize Varieties

AbstractIn this study, the CERES-Maize model was calibrated and evaluated using data from 60 farmers’ fields across Sudan (SS) and Northern Guinea (NGS) Savannas of Nigeria in 2016 and 2017 rainy seasons. The trials consisted of 10 maize varieties sown at three different sowing densities (2.6, 5.3, and 6.6 plants m−2) across farmers’ field with contrasting agronomic and nutrient management histories. Model predictions in both years and locations were close to observed data for both calibration and evaluation exercises as evidenced by low normalized root mean square error (RMSE) (≤15%), high modified d-index (> 0.6), and high model efficiency (>0.45) values for the phenology, growth, and yield data across all varieties and agro-ecologies. In both years and locations and for both calibration and evaluation exercises, very good agreements were found between observed and model-simulated grain yields, number of days to physiological maturity, above-ground biomass, and harvest index. Two separate scenario analyses were conducted using the long-term (26 years) weather records for Bunkure (representing the SS) and Zaria (representing the NGS). The early and extra-early varieties were used in the SS while the intermediate and late varieties were used in the NGS. The result of the scenario analyses showed that early and extra-early varieties grown in the SS responds to increased sowing density up to 8.8 plants m−2 when the recommended rate of N fertilizers (90 kg N ha−1) was applied. In the NGS, yield responses were observed up to a density of 6.6 plants m−2 with the application of 120 kg N ha−1 for the intermediate and late varieties. The highest mean monetary returns to land (US$1336.1 ha−1) were simulated for scenarios with 8.8 plants m−2 and 90 kg N ha−1, while the highest return to labor (US$957.7 ha−1) was simulated for scenarios with 6.6 plants m−2 and 90 Kg N ha−1 in the SS. In the NGS, monetary return per hectare was highest with a planting density of 6.6 plants m−2 with the application of 120 kg N, while the return to labor was highest for sowing density of 5.3 plants m−2 at the same N fertilizer application rates. The results of the long-term simulations predicted increases in yield and economic returns to land and labor by increasing sowing densities in the maize belts of Nigeria without applying N fertilizers above the recommended rates.

Growth and Yield of Wheat under Irrigation by Sugar Mill’s Wastewater

2014 ◽  
Vol 24 (1-2) ◽  
pp. 211-218
Author(s):  
PK Kundu ◽  
TK Acharjee ◽  
MA Mojid
Keyword(s):  
Grain Yield ◽  
Fertilizer Application ◽  
Wastewater Irrigation ◽  
Growth And Yield ◽  
Sugar Mill ◽  
Yield Data ◽  
Full Dose ◽  
Sugar Mills ◽  
Irrigation Treatments ◽  
Mixed Water

The possibility of using sugar mill’s wastewater/effluent in irrigation was evaluated by investigating the effects of wastewater on growth and yield of wheat (Triticum aestivum cv. Prodip). The experiment was conducted at North Bengal Sugar Mill site in Natore during December 2011 to March 2012. Three irrigation treatments (I1: irrigation with fresh/tubewell water, I2: irrigation with a mixture of fresh and wastewater at 1:1 ratio and I3: irrigation with wastewater) under a main factor and three fertilizer treatments (F0: no application of fertilizer, F1: half dose fertilizer and F2: full dose fertilizer) under a sub factor were evaluated. The experiment was laid out in a split-plot design with three replications of the treatments. Wheat was grown with three irrigations totaling 14 cm applied at 4, 26 and 43 days after sowing (DAS). Important growth and yield data of the crop were recorded. The highest grain yield of 1.829 t/ha was obtained under mixed water irrigation and the lowest grain yield of 1.469 t/ha was obtained under wastewater irrigation. The three irrigation treatments, however, provided statistically similar (p = 0.05) grain yield. For the interaction between irrigation and fertilizers, mixed water irrigation and full dose fertilizer application (I2F2) provided significantly higher grain yield (2.757 t/ha) than all other treatment combinations. The second highest yield, produced under freshwater irrigation and full dose fertilizer (I1F2), was statistically similar to the yield under wastewater irrigation and full dose fertilizer (I3F2). Results of this experiment thus exposed good prospects of irrigating wheat by sugar mills’ wastewater.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19174 Progress. Agric. 24(1&2): 211 - 218, 2013

Molecular Speciation of Phosphorus in Soil Under Various Long-Term Fertilization Regimes

2021 ◽  
Author(s):  
Xue Li ◽  
Qiuxiang Wen ◽  
Shiyu Zhang ◽  
Na Li ◽  
Jinfeng Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Layer ◽  
Growth And Yield ◽  
Pig Manure ◽  
Corn Yield ◽  
Key Factors ◽  
Mineral Fertilization ◽  
Soil P ◽  
N Fertilizers

Abstract Aims The objectives of this study were to examine the long-term substitution of mineral phosphorus (P) fertilizers with manure (M) plus nitrogen (N) fertilizers and how they affect the forms of P that occur in soil, soil P distribution, and plant growth.Methods We used a solution of 31P nuclear magnetic resonance (31P-NMR) spectroscopy to study the correlations between long-term fertilization regimes and the forms of P that occur at different soil depths. Then we investigated yield, plant growth, and soil properties.Results A 40-year field experiment showed that the use of M + N fertilizers can significantly improve plant growth and yield. The proportion of organic P in the 20-40 cm soil layer was significantly increased by long-term M fertilization. The concentrations of various forms of P (orthophosphate, pyrophosphate, diesters, monoesters, and total inositol hexakisphosphate, IHP) in topsoil increased significantly with the combination of M with N + P mineral fertilization. The addition of M greatly increased the stereoisomers of IHP (myo-IHP, scyllo-IHP, neo-IHP, and D-chiro-IHP) and the proportion and concentration of corrected diesters. There were no significant differences in the pyrophosphate contents of the 40-60 cm soil layer according to fertilization type and year of fertilization. There were also no significant differences in IHP stereoisomers and diesters according to fertilization year. The P forms that contributed to corn yield were orthophosphate, diester, and IHP. Further, pyrophosphate made no significant contribution to corn growth. Conclusions Over the long-term, pig manure can significantly increase the amount of orthophosphate that is directly absorbed by crops and the amount of IHP stereoisomers that can be used by plants. Orthophosphate and IHP are the two key factors that have a positive effect on plant growth.

The residual effectiveness of phosphorus for stylosanthes pastures on red and yellow earths in the semi-arid tropics

Soil Research ◽  
1985 ◽  
Vol 23 (2) ◽  
pp. 211 ◽  
Author(s):  
ME Probert ◽  
J Williams
Keyword(s):  
Soil Phosphorus ◽  
Fertilizer Application ◽  
Yield Data ◽  
Stylosanthes Hamata ◽  
Phosphorus Requirements ◽  
Term Maintenance ◽  
Semi Arid ◽  
Residual Effectiveness ◽  
Extractable Soil

A mathematical description is presented of the effects through time of phosphorus fertilizer application on the growth of Stylosanthes hamata cv. Verano and on changes in extractable soil phosphorus on a red and a yellow earth in the semi-arid tropics. For the five years of observations, the models used provided reasonable descriptions of both aspects. It was not possible, however, to clearly demonstrate which of two functions tested better described the decreasing effectiveness of phosphorus with time. The simpler exponential function provided as good a fit to the yield data as did the function proposed by Barrow, whilst for the extractable phosphorus data the latter did explain a significantly higher proportion of the variance, but its coefficients could not be estimated with great precision. The results show that the phosphorus requirements of such pastures on these soils are modest. Extractable soil phosporus levels of approximately 12 �g g-1 in either 0.005 M H2SO4 or 0.5 M NaHCO3 are indicated as being adequate to ensure near-maximum yields of the legume. Long-term maintenance fertilizer needs as predicted by the models are discussed.

scholarly journals Effect of Nutrient Management on Growth and Yield of Cauliflower Hybrids in haor area

2020 ◽  
Vol 22 (1) ◽  
pp. 95-104
Author(s):  
M Salwa ◽  
MA Kashem
Keyword(s):  
Plant Height ◽  
Nutrient Management ◽  
Block Design ◽  
Leaf Length ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Cow Dung ◽  
Fertilizer Rate ◽  
Yield Data ◽  
Randomized Complete Block Design

The experiment was conducted in the Dekarhaor of Noagaon village under South Sunamganj Upazila of Sunamganj district during November 2017 to February 2018 to observe the effect of nutrients management on growth and yield of cauliflower hybrids. Two Hybrids namely ShiraGiku (V1) and Rupali (V2), and four combinations of nutrients, viz. (i) recommended rate of N-P-K-S-Zn-B @ 180-80-180-28-4.5-2.1 kg ha-1(F1), (ii) F1 + 25% N-P-K- S-Zn-B of F1 (F2), (iii) F1 – 25% N-P-K-S-Zn-B of F1 (F3), and (iv)  cow dung @ 10 t ha-1 (F4)  was conducted in a factorial randomized complete block design (RCBD) and replicated thrice. Plant height (cm), numbers of leaves plant-1, leaf length (cm) and leaf breadth (cm), and spreading diameter (cm) were collected at 15 days intervals, while the yield data were recorded at harvest. The parameters were significantly varied due to hybrids and fertilizers packages. Higher gross yield (42.52tha-1) was found in Shira Giku and lower (42.12 t ha-1) from Rupali. Higher curd yield of 25.17 t ha-1 was obtained in Shira Giku than Rupali (9.61 t ha-1). The highest gross yield of 44.45 t ha-1 was obtained when the crop was treated with cowdung @ 10 t ha-1 followed by recommended fertilizer rate (F1). The curd yield of 18.19 t ha-1 was obtained with 25% less than recommended fertilizer rate of application (F3). The highest gross yield of 52.93 t ha-1 was obtained in V1F1 combination and the lowest of 30.10t ha-1in V2 F1. Results revealed that the Hybrid ShiraGiku with recommended dose of fertilizer (180-80-180-28-4.5-2.1 kg ha-1N-P-K-S-Zn-B) performed the best in comparison to other treatment combinations. Bangladesh Agron. J. 2019, 22(1): 95-104

Effect of integrated nutrient management on baby corn (Zea mays L.)

2016 ◽  
Vol 36 (4) ◽  
Author(s):  
V. R. Jinjala ◽  
H. M. Virdia ◽  
N. N. Saravaiya ◽  
A. D. Raj
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Fertilizer Application ◽  
Black Soil ◽  
Chemical Fertilizer ◽  
Growth And Yield ◽  
Integrated Nutrient Management ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Fodder Yield

A field experiment was conducted during rabi season of 2011-12 on heavy black soil to study the effect of integrated nutrient management on growth and yield of baby corn. The treatments comprising all possible combinations of five levels of nitrogen (chemical and vermicompost fertilizer) with and without bio-fertilizer (Azotobacter and PSB) were laid out in randomized block design with three replications. These were significantly higher with application of 100% RDN from chemical fertilizer with bio-fertilizer over 100% RDN from vermicompost. The cob and fodder yields significantly differed with different integrated nutrient management treatment. Significantly the higher growth and yield attributes yield and fodder yield were recorded with the application of 100% RDF from chemical fertilizer with bio-fertilizer. Application of 100% RDN from chemical fertilizer with biofertilizer was recorded higher net returns over 100% RDN from vermicompost (Rs. 220775/ha) and BCR (12.54).

scholarly journals Prediction of Maize Yields from In-Season GreenSeeker Normalized Difference Vegetation Index and Dry Biomass as Influenced by Different Nutrient Combinations

2020 ◽  
Vol 13 (1) ◽  
pp. 165
Author(s):  
Hillary M. O. Otieno ◽  
George N. Chemining’wa ◽  
Shamie Zingore
Keyword(s):  
Grain Yield ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Nutrient Management ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Yield Prediction ◽  
Maize Productivity ◽  
Dry Biomass ◽  
The Right

To mitigate low maize productivity, improve on-farm planning and policy implementation, the right fertilizer combinations and yield forecasting should be prioritized. Therefore, this research aimed at assessing the effect of applying different nutrient combinations on maize growth and yield and in-season grain yield prediction from biomass and normalized difference vegetation index (NDVI) readings. The research was done in Embu and Kirinyaga counties, in Central Kenya. Nutrient combinations tested were P+K, N+K, N+P, N+P+K, and N+P+K+Ca+Mg+Zn+B+S. The results showed consistently lowest and highest NDVI reading, dry biomass, and grain yields due to P+K and N+P+K+Ca+Mg+Zn+B+S treatments, respectively. Positive NDVI responses of 56%, 14%, 15%, and 15% were recorded with N, P, K, and combined Ca+Mg+Zn+B+S, respectively. These nutrients, in the same order, recorded 54%, 20%, 8%, and 18% positive responses with biomass. The GreenSeeker NDVI reading with grain yield and aboveground dry biomass with grain yield recorded R2 ranging from 0.23-0.53 and 0.30-0.61 (in Embu), and 0.31-0.64 and 0.30-0.50 (in Kirinyaga), respectively. When data were pooled, the prediction strength increased, reaching a maximum of 67% and 58% with NDVI and biomass, respectively. Yield prediction was even more robust when the independent variables were combined through multiple linear model at both 85 and 105 days after emergence. From this research, it is evident that the effects of balanced fertilizer application are detectable from NDVI readings—providing a tool for tracking and monitoring nutrient management effects—not just from the nitrogen perspective as commonly studied but from the combined effects of multiple nutrients. Also, grain yield could be accurately predicted early before harvesting by combining NDVI and biomass yields.

scholarly journals Study on nutrient management in high yield Wheat system in Bihar using nutrient expert tool

2020 ◽  
Vol 5 (02) ◽  
pp. 288-295
Author(s):  
Vishal B. Shahi ◽  
Sudarshan K. Dutta ◽  
Kaushik Majumdar ◽  
Amit Tomar
Keyword(s):  
Nutrient Management ◽  
High Efficiency ◽  
Crop Productivity ◽  
Fertilizer Application ◽  
High Yield ◽  
Wheat Crop ◽  
Net Income ◽  
Economic Returns ◽  
Nutrient Inputs ◽  
Environmental Threats

The SSNM is need-based feeding of crops with nutrients in right source, right rate, right time and right place while, recognizing the inherent spatial variability which enhances crop productivity, profitability, NUE and avoids nutrient wastage. This paper deals with the SSNM technologies approaches and tools which are able to enhance NUE, crop productivity and profitability in wheat crop. The SSNM caters to help in improving NUE as it provides an approach for feeding crops like rice, maize and wheat, etc with nutrients as and when needed. It is based on the concept when and how much to feed. The main benefit for farmers from improved nutrient management strategy is an increase in the profitability and reducing the cost and environmental threats. The SSNM reduces the wastage of fertilizers by preventing excessive use of fertilizers and avoiding fertilizer application when the crop does not require nutrient inputs. It also assures that N, P and K are applied in that ratio required by the intended crop. It aims to achieve high yield and high efficiency of nutrient use, leading to high cash value of the harvest per unit of fertilizer invested. Results from three years data from 2014 to 2016, 173 on-farm sites in four districts of Bihar showed that NE significantly increased wheat yields and economic returns compared to the generalized Farmers’ Fertilization Practice (FFP). NE’s impact on fertilizer use in wheat shifted K application upwards while also minute upwards N and P application rates. The study used recent advances in information and communication technology (ICT) and computer based application of "Nutrient Expert for Wheat, Maize and Rice", which transform the science of SSNM into guidelines matching the field-specific needs and conditions of a farmer. Across all sites, NE wheat increased to yield and economic benefit (i.e. gross return above fertilizer costs) over FFP. Recommendations from NE wheat also increased yield (by .63 t/ha) over FFP with large increase in fertilizer K (+50.88 kg K20/ha) and N and P fertilizer was minute increase N (+ 4.32 Kg N/ha) and P (+ 6.21 Kg P2o5/ha). Result revealed that nutrient expert application significantly increase higher grain yields over farmer fertilizer practice (FFP). Average wheat grain yield in NE practice was 45.32 Kg ha-1, which was 13.9% more than the Farmer Fertilizer Practices, with NE recorded an additional net income of Rs.8434 ha-1 over FFP respectively.

scholarly journals INFLUENCE OF BOTANICALS ON SOIL FERTILITY POTENTIALS, SEED GERMINATION AND PERFORMANCE OF MAIZE (ZEA MAYS) VARIETIES UNDER LOW FERTILE CONTINUOUSLY-CROPPED SOIL CONDITIONS

2017 ◽  
Vol 5 (11) ◽  
pp. 400-413
Author(s):  
Babajide Peter ◽  
OpasinaIfeoluwa ◽  
Ajibola Adijat ◽  
Noah ◽  
Oyedele Temitope ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Crop Production ◽  
Block Design ◽  
Combined Treatment ◽  
Growth Yield ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Soil Conditions ◽  
Plant Residues ◽  
Maize Varieties

It is not unreasonable to state that, even before the introduction of organic agriculture, African local farmers have numerous of undocumented environment-friendly, nature-inclined indigenous techniques for boosting soil fertility and enhancing crop yield. However, despite the versatility of indigenous knowledge, setback is always experienced from western science, which tags such knowledge as being non-scientific and not worthy of scholarly engagements. A field experiment was carried out in the year 2013, at the Teaching and Research Farms, LadokeAkintola University of Technology, Ogbomoso, to assess the soil fertility and yield promoting potentials of some indigenous plant species’ botanicals used as pre-planting treatments on different maize varieties. It was a 3 by 5 factorial experiment. The treatments introduced were: Three (3) maize varieties (V1 = ACR-DMR-SR-Y, V2 = Local EM-W and V3 = Suwan Solo Yellow and five (5) other treatments (comprising pre-sowing botanical treatments of: Kigeliaafricana only, Glyphea brevis only, combination of Kigeliaafricana and Glyphea brevis only, NPK fertilizer application (as a reference) and the control (treated with ordinary water only). The trial was laid out in Split Plot in Randomized Complete Block Design (RCBD), replicated three times. Data were collected on growth and yield parameters, and the data collected were analysed using analysis of variance (ANOVA). Means were compared using Duncan Multiple Range Test (DMRT). All the botanical treatments significantly influenced germination, growth, yield and nutrient uptakes of maize, compared to the control. Either of the botanicals tested (with ordinary basal manure application of the pre-existing plant residues on the field), competed effectively with NPK fertilized plants. Hence, since maize responded better to sole treatments of either Kigeliaafricana or Glyphea brevis extracts, irrespective of varieties than the combined treatment of the two botanicals, any of the maize varieties is therefore recommended as being suitably compatible with either of the sole botanical treatments, in the study area. Thus, this research is reasonable, particularly in the aspects of fertilizer economy, environment-friendliness, organic farming and more profitable crop production in the tropics, where soils are continuously cropped and marginal.

Effect of integrated nutrient management on growth and yield of pigeon pea (Cajanus cajan) in changing climatic condition of Bihar

2018 ◽  
Author(s):  
Sanjay Kumar ◽  
R.N. Singh ◽  
Shailesh Kumar ◽  
Pankaj Kumar ◽  
Albert K. Culbreath ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Pigeon Pea ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Cost Ratio ◽  
Phosphate Solubilizing Bacteria ◽  
Integrated Nutrient Management ◽  
Yield Attributes ◽  
Benefit Cost Ratio ◽  
Stalk Yield

A field experimental was conducted at Krishi Vigyan Kendra, Khodawandpur as well as Gadhpura and Barauni blocks of Begusarai district to study the effect of integrated nutrient management for sustaining the productivity of pigeon pea [Canjanus cajan (L) mill sp.] under rainfed conditions. Growth and yield attributing characters viz., plant height, yield induced such as days to 50% flowering , branches/plant, leaf area, pods/plant, pod length, number of grains/pod, 100 seed weight, grain and stalk yield and benefit-cost ratio were significantly higher at recommended dose of fertilizer (RDF) than organic manure and bio fertilizer. Application of RDF with vermi compost @ 2 tones/ha, Farm Yard Manure (FYM) @ 5.0 tones/ha and bio-fertilizer singly and combined enhanced the yield attributes grain yield parameters. Seed inoculation with Rhizobium + phosphate solubilizing bacteria (PSB) alone or combined inoculation were found effective and significantly enhanced the yield attributing and grain and stalk yield of pigeon pea.

Cleaning and Early Crop-Tree Release in Northern Hardwood Stands: A Review

1991 ◽  
Vol 8 (3) ◽  
pp. 111-115 ◽  
Author(s):  
Eric Heitzman ◽  
Ralph D. Nyland
Keyword(s):  
Field Tests ◽  
Economic Benefits ◽  
Term Effect ◽  
Growth And Yield ◽  
Diameter Growth ◽  
Yield Data ◽  
Northern Hardwood ◽  
Long Term Effect ◽  
Tree Quality

Abstract Published information indicates that cleaning among sapling-stage northern hardwoods has value for maintaining species that might otherwise become overtopped and lost from a stand. Cleaning will also stimulate the diameter growth of trees in upper crown positions, but may delay the dying and self-pruning of lower branches and thereby affect tree quality. Removing adjacent trees that touch the crowns of a selected number of crop trees has proven efficient and effective. However, field tests have not yet provided growth and yield data for assessment of the long-term effect on tree quality, or the economic benefits from such treatments. North. J. Appl. For. 8(3):111-115.

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