scholarly journals Profitability and efficiency of fertilization in a corn/ soybean/corn system in a Latosol with improved fertility

2018 ◽  
Vol 9 (4) ◽  
Author(s):  
Clério Hickmann ◽  
Álvaro Vilela de Resende ◽  
Carlos Alberto Silva ◽  
Julian Junio de Jesus Lacerda ◽  
Silvino Guimarães Moreira ◽  
...  
Keyword(s):  
Grain Yield ◽  
Crop Rotation ◽  
Nutrient Use Efficiency ◽  
Minas Gerais ◽  
Rotation System ◽  
Nutrient Use ◽  
Minas Gerais State ◽  
Crop Rotation System ◽  
Use Efficiency ◽  
Npk Fertilization

Currently, there are some doubts regarding fertilization dimensioning that aims at a high grain yield in soils with improved fertility in a crop rotation system. Thus, the objective of this study was to evaluate the yield and profitability resulting from different combinations of NPK fertilization andthe efficiency of these nutrients in sequential crops of corn/soybean/corn, in a Latosol with improved fertility, in a farm located in the region of Campo das Vertentes, Minas Gerais State, Brazil. Four doses of sowing fertilization and topdressing were compared, corresponding to approximate proportions of 25, 50, 100 and 150 % of the doses usually applied by farmers. Nutrients sources varied according to the inputs used in the farm for each crop. In a soil with improved fertility, corn is more responsive tofertilization than soybean, with higher grain yield gains associated with N and K supply, while P is less limiting. The most profitable nutrients combination for this system involves increasing the amounts of N and K and reducing the amount of P in relation to the standard fertilization employed on the farm, providing a 14.3 % higher profit and higher average nutrient use efficiency.

scholarly journals Simulation of fertilizer requirement for irrigated wheat in Eastern India using the QUEFTS model

2006 ◽  
Vol 6 ◽  
pp. 231-245 ◽  
Author(s):  
Debtanu Maiti ◽  
D.K. Das ◽  
H. Pathak
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Nutrient Use Efficiency ◽  
Chemical Properties ◽  
Tropical Soils ◽  
Crop Modeling ◽  
Eastern India ◽  
Site Specific ◽  
Nutrient Use ◽  
Use Efficiency

Crop modeling can provide us with information about fertilizer dose to achieve the target yield, crop conditions, etc. Due to conventional and imbalanced fertilizer application, nutrient use efficiency in wheat is low. Estimation of fertilizer requirements based on quantitative approaches can assist in improving yields and nutrient use efficiency. Field experiments were conducted at 20 sites in eastern India (Nadia district of West Bengal) to assess the soil supply, requirement, and internal efficiency of N, P, K, and Zn in wheat. The data were used to calibrate the QUEFTS (Quantitative Evaluation of the Fertility of Tropical Soils) model for site-specific, balanced fertilizer recommendations. The parameters of maximum accumulation (a) and maximum dilution (d) in wheat were calculated for N (35, 100), P (129, 738), K (17, 56), and Zn (21502, 140244). Grain yield of wheat showed statistically significant correlation with N (R2= 0.937**), P (R2= 0.901**), and K uptake (R2= 0.801**). The NPK ratio to produce 1 tonne grain yield of wheat was calculated to be 4.9:1.0:8.9. The relationships between chemical properties and nutrient-supplying capacity of soils were also established. The model was validated using the data from four other experiments. Observed yields with different amounts of N, P, K, and Zn were in good agreement with the predicted values, suggesting that the validated QUEFTS model can be used for site-specific nutrient management of wheat.

scholarly journals Productivity, nutrient use efficiency, energetics and bio-economics of winter maize in south India

2021 ◽  
Author(s):  
S R Salakinkop ◽  
Siddarta Hulamani
Keyword(s):  
Grain Yield ◽  
South India ◽  
Nutrient Use Efficiency ◽  
Winter Season ◽  
Fish Feed ◽  
Fertility Level ◽  
Energy Productivity ◽  
Nutrient Use ◽  
Stover Yield ◽  
Use Efficiency

Abstract Maize area is rapidly spreading in south India in response to rising demand from the poultry and fish feed industries. The planting of maize during winter season is necessary to increase the total area and production of maize. The present investigation encompassing different sowing windows with different fertility levels revealed that significantly higher winter maize productivity was achieved from first and second week of October planting along with application of 200 % RDF(recommended dose of fertilizer) followed by 150 % RDF. Planting of winter maize during first week of October recorded significantly higher grain yield (8786 kg ha-1) and stover yield (1220 kg ha-1) and was found on par with sowing during second week of October. Among fertility levels, significantly higher grain yield (8320 kg ha -1) and stover yield (1195 kg ha-1) were recorded with application of 200 % RDF and was found on par with application of 150 % RDF. Similarly higher dry matter production, more days for physiological maturity, higher accumulation of growing degree days, photo thermal units and heliothermal units were recorded from crop planted during first and second week of October along with application of either 200 % or 150 % RDF. Further higher nutrient use efficiency was recorded from first and second week October planted crop along with lower fertility level (100 % RDF). Similarly significantly higher output energy, net energy and specific energy were higher from crop planted during first week of planting along with application of 200 % RDF. Also it recorded higher net returns and gross returns Whereas, energy use efficiency and energy productivity were higher with planting during first week of October along with application of 100 % RDF.

scholarly journals Productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients

2021 ◽  
Vol 17 (2) ◽  
pp. 390-403
Author(s):  
Dinesh Pandey ◽  
Anjum Ahmad ◽  
J.K. Chauhan ◽  
N. Pandey
Keyword(s):  
Growth Rate ◽  
Oryza Sativa ◽  
Grain Yield ◽  
Dry Matter ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Inorganic Fertilizer ◽  
Nutrient Use ◽  
Use Efficiency

An experiment was carried out during the Kharif 2002 and 2003, to study the productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients at Research farm, IGAU, Raipur (CG). In all 12 treatments, comprising of different N, P and K levels and its conjunction with organic fertilizers were laid out in Randomized Block Design with 3 replications. The results revealed that application of inorganic fertilizer level of 150:80:60 kg NPK ha-1 significantly increased number of active leaf, leaf area, leaf area index and dry matter accumulation at later stages as compared to lower level of inorganic fertilizer. The conjunction of 100:60:40 kg NPK ha-1 along with PM or N blended with CDU found to be equally effective to that of inorganic fertilizer level of 150:80:60 kg NPK ha-1 for above growth parameters. The chlorophyll content during crop period under above level was the highest under said treatment. The highest crop growth rate was observed between 60-90 DAT followed by 90 DAT-harvest and 30-60 DAT, respectively. The per day accumulation of dry matter during 60-90 DAT period was almost three to four times of that accumulated during 30-60 DAT. Thereafter growth rate almost declined till maturity during both the years.The increased concentration of N at different growth stages and its uptake by plant helped in increasing the yield components and grain yield. The critical analysis of grain yield observations revealed that conjunction of lower levels of inorganic fertilizer (100:60:40 or 50:30:20 kg NPK ha-1) along with CDU or PM gave the saving of 50 kg N, 20 kg P and 20 kg K ha-1 for the cultivation of hybrid rice. Moreover, the higher buildup of available N and K has been also observed under said combination of organic and inorganic fertilizer treatments. The application of 150:80:60 kg NPK ha-1 along with PSB gave the highest buildup of available phosphorus. Inorganic level of 150:80:60 kg NPK ha-1 gave the highest production efficiency and productivity rating index, which was followed by application of inorganic fertilizer of 100:60:40 kg NPK ha-1 along with PM and blending of N with CDU, respectively. The application inorganic fertilizer of 50:30:20 kg NPK ha-1 + PM gave the highest nutrient efficiency during both the years. The highest input cost, net profit and per rupee investment was found under 150:80:60 kg NPK ha-1 followed by application of 100:60:40 kg NPK ha-1 along with PM.

scholarly journals Identification of Quantitative Trait Loci Associated with Nutrient Use Efficiency Traits, Using SNP Markers in an Early Backcross Population of Rice (Oryza sativa L.)

2019 ◽  
Vol 20 (4) ◽  
pp. 900 ◽  
Author(s):  
Zilhas Jewel ◽  
Jauhar Ali ◽  
Anumalla Mahender ◽  
Jose Hernandez ◽  
Yunlong Pang ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Quantitative Trait ◽  
Nutrient Use Efficiency ◽  
Snp Markers ◽  
Rice Cultivars ◽  
Backcross Population ◽  
Nutrient Use ◽  
Trait Loci ◽  
Use Efficiency

The development of rice cultivars with nutrient use efficiency (NuUE) is highly crucial for sustaining global rice production in Asia and Africa. However, this requires a better understanding of the genetics of NuUE-related traits and their relationship to grain yield. In this study, simultaneous efforts were made to develop nutrient use efficient rice cultivars and to map quantitative trait loci (QTLs) governing NuUE-related traits in rice. A total of 230 BC1F5 introgression lines (ILs) were developed from a single early backcross population involving Weed Tolerant Rice 1, as the recipient parent, and Hao-an-nong, as the donor parent. The ILs were cultivated in field conditions with a different combination of fertilizer schedule under six nutrient conditions: minus nitrogen (–N), minus phosphorus (–P), (–NP), minus nitrogen phosphorus and potassium (–NPK), 75% of recommended nitrogen (75N), and NPK. Analysis of variance revealed that significant differences (p < 0.01) were noted among ILs and treatments for all traits. A high-density linkage map was constructed by using 704 high-quality single nucleotide polymorphism (SNP) markers. A total of 49 main-effect QTLs were identified on all chromosomes, except on chromosome 7, 11 and 12, which are showing 20.25% to 34.68% of phenotypic variation. With further analysis of these QTLs, we refined them to four top hotspot QTLs (QTL harbor-I to IV) located on chromosomes 3, 5, 9, and 11. However, we identified four novel putative QTLs for agronomic efficiency (AE) and 22 QTLs for partial factor productivity (PFP) under –P and 75N conditions. These interval regions of QTLs, several transporters and genes are located that were involved in nutrient uptake from soil to plant organs and tolerance to biotic and abiotic stresses. Further, the validation of these potential QTLs, genes may provide remarkable value for marker-aided selection and pyramiding of multiple QTLs, which would provide supporting evidence for the enhancement of grain yield and cloning of NuUE tolerance-responsive genes in rice.

scholarly journals Agronomic Characteristics Related to Grain Yield and Nutrient Use Efficiency for Wheat Production in China

PLoS ONE ◽  
2016 ◽  
Vol 11 (9) ◽  
pp. e0162802 ◽  
Author(s):  
Limin Chuan ◽  
Ping He ◽  
Tongke Zhao ◽  
Huaiguo Zheng ◽  
Xinpeng Xu
Keyword(s):  
Grain Yield ◽  
Nutrient Use Efficiency ◽  
Wheat Production ◽  
Agronomic Characteristics ◽  
Nutrient Use ◽  
Use Efficiency

Aluminum effects on growth, grain yield and nutrient use efficiency ratios in sorghum genotypes

1989 ◽  
Vol 116 (2) ◽  
pp. 257-264 ◽  
Author(s):  
V. C. Baligar ◽  
H. L. Dos Santos ◽  
G. V. E. Pitta ◽  
E. C. Filho ◽  
C. A. Vasconcellos ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nutrient Use Efficiency ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Sorghum Genotypes
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