scholarly journals Long-term Use of Balanced and Integrated Nutrient Management Improved Soil Aggregation and Carbon Stabilization in a Maize-wheat Cropping Sequence

2020 ◽  
pp. 65-76
Author(s):  
Anmol Singh ◽  
G. S. Dheri ◽  
D. K. Benbi
Keyword(s):  
Management Practices ◽  
Nutrient Management ◽  
Storage Capacity ◽  
Soil Aggregation ◽  
Integrated Nutrient Management ◽  
Organic C ◽  
C Storage ◽  
Cropping Sequence ◽  
Recalcitrant C

Sustainable nutrient management practices have the potential to enhance carbon (C) storage capacity of agricultural soils that may help offset increasing atmospheric CO2 concentration. Nutrient management practices on long-term basis differentially influence aggregates and distribution of soil organic C (SOC) present within aggregates, which in time may affect C stabilization. The present study assessed the impact of long-term application of fertilizers for 44 years either alone or integration with farmyard manure (FYM) on bulk density, SOC and C pools, potassium permanganate oxidizable C (KMnO4), aggregate stability and distribution of C fractions within different size aggregate under maize-wheat cropping sequence. The application of 100%NPK+FYM significantly (P< 0.05) improved soil aggregation and mean weight diameter (MWD). The percent of macro-aggregates (MacroA) and meso-aggregates (MesoA) was maximum in 100%NPK+FYM followed by NPK and the minimum in the control treatment. Irrespective of aggregate classes, TOC (g kg-1 aggregate) was maximum in 100%NPK+FYM treatment with an average of 8.42 g kg-1 aggregate as compared to control (5.05 g kg-1 aggregate). If averaged across the treatments, TOC concentration in aggregates followed the order MacroA> MesoA>MicroA. Correspondingly, results for KMnO4-C were similar in different treatments and aggregate classes. Application of FYM with inorganic fertilizers (NPK) or NPK showed a significant increase in all oxidizable organic C fractions particularly recalcitrant C fraction, which reflects the stable nature of OC as compared to very labile and labile C fractions. In general, C present in mineral fraction and large-sized aggregates (MacroA) has higher recalcitrant fractions of SOC as compared to small-sized aggregates (MesoF and MicroF). The study concluded that long-term balanced and integrated nutrient management improved soil aggregation, C distribution within aggregates, and C storage capacity of soils under maize-wheat. Carbon associated with macro aggregate and a mineral fraction has more recalcitrant C fraction compared to meso and micro aggregate fractions.

Long-term yield variability and detection of site-specific climate-smart nutrient management practices for rice–wheat systems: an empirical approach

2014 ◽  
Vol 152 (4) ◽  
pp. 575-601 ◽  
Author(s):  
N. SUBASH ◽  
B. GANGWAR ◽  
S. SINGH ◽  
A. K. KOSHAL ◽  
V. KUMAR
Keyword(s):  
Management Practices ◽  
Nutrient Management ◽  
Cropping System ◽  
Inorganic Fertilizer ◽  
Recommended Dose ◽  
Maximum Temperature ◽  
Climate Change Scenarios ◽  
Integrated Nutrient Management ◽  
Increasing Trend

SUMMARYIdentification of climate-smart nutrient management practices will overcome the ill effects of extreme climate variability on agricultural production under projected climate change scenarios. The rice–wheat cropping system is the major system used in India: using long-term yield data from Integrated Nutrient Management experiments on this system, the present study analysed trends in weather parameters and grain yield under different nutrient management practices. Twelve treatments with different combinations of inorganic (chemical fertilizer) and organic (farmyard manure (FYM), green manure (GM) and crop residue) sources of nutrients were compared with farmers’ conventional practices. A significant increasing trend was noticed for rainfall during the rice season at Kalyani and Navsari, of the order of 137·7 and 154·2 mm/decade, respectively. The highest increase in maximum temperature was seen at Palampur (1·62 °C/decade) followed by Ludhiana (1·14 °C/decade). At all the sites except Ludhiana and Kanpur, the yield of the rice–wheat system showed an increasing trend ranging from 0·08 t/ha/year in Jabalpur to 0·011 t/ha/year in Navsari, under the recommended dose of inorganic fertilizer application. A significant decreasing trend of 0·055 t/ha was found in Ludhiana. For most of the sites, a combination of half the recommended dose of inorganic fertilizer and either FYM or GM to provide the remainder of the N required was sufficient to maintain productivity. The top three climate-resilient integrated nutrient management practices were identified for all the study sites. Thus, the present study highlights the adaptive capacity of different integrated nutrient management practices to rainfall and temperature extremes under rice–wheat cropping system in distinctive agro-ecological zones of India.

scholarly journals Long-term Effect of Integrated Nutrient Management Practices on Growth, Yield and Nutrient Uptake of Finger Millet (Eleusine coracana G.) in Alfisols under Different Cropping Systems

2021 ◽  
pp. 46-53
Author(s):  
. Shilpa ◽  
B. G. Vasanthi ◽  
Hari Mohan Meena
Keyword(s):  
Nutrient Uptake ◽  
Finger Millet ◽  
Management Practices ◽  
Nutrient Management ◽  
Block Design ◽  
Nutrient Balance ◽  
Growth Yield ◽  
Optimum Level ◽  
Integrated Nutrient Management

A field experiment was conducted to study the effect of long-term integrated nutrient management (INM) on growth, yield and nutrient uptake of rainfed finger millet during kharif 2019 at field unit of All India Co-ordinated Research Project for Dryland Agriculture at University of Agricultural Sciences, Bangalore, India. The experimental plot in the field was laid out in a randomized complete block design (RCBD) with 10 treatments and four replications. Growth parameters such as plant height (112.44 cm), number of productive tillers per hill (4.75), number of ear heads per hill (4.49), number of fingers per ear head (7.25), total dry matter production per hill (77.39 g) and yield parameters like grain yield (28.27 q ha-1) and straw yield (32.63 q ha-1) were found to be higher with application of FYM @10 t ha-1 + 100% RDF under finger millet- groundnut rotation (T9). Similarly, T9 also recorded higher uptake of nitrogen (37.03 and 26.40 kg ha-1), phosphorus (6.78 and 4.57 kg ha-1) and potassium (30.17 and 48.68 kg ha-1) in grain and straw of finger millet, respectively. It implies that INM over long period of time tend to supply the plants with sufficient amount of essential nutrient elements while creating favourable physico-chemical properties of soil for healthy environment. It also safeguards soil nutrient balance in long term to an optimum level for sustaining the desired crop productivity.

scholarly journals Integrated Nutrient Management for Potato-Maize-T. Aman Rice Cropping Pattern

2016 ◽  
Vol 20 (1) ◽  
pp. 51-58
Author(s):  
PK Saha ◽  
F Rahman ◽  
M Akter ◽  
R Islam ◽  
ATMS Hossain ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Management Practices ◽  
Nutrient Management ◽  
Poultry Manure ◽  
Chemical Fertilizer ◽  
Cropping Pattern ◽  
Integrated Nutrient Management ◽  
Total N ◽  
Organic C ◽  
Nutrient Sources

A field experiment on integrated nutrient management (INM) for Potato-Maize-T. Aman cropping pattern was conducted at BRRI RS farm, Rangpur (AEZ-3) during 2007-2010. The objectives were to examine the effect of Potato-Maize-T. Aman cropping on soil fertility and to develop appropriate fertilizer management practices for the above mentioned pattern. Inorganic and organic nutrient sources were tested in six different combinations in Rangpur region. Poultry manure (PM) @ 3.0 t ha-1 + IPNS based inorganic fertilizers for potato (N80, P0, K30, S0, Zn0, Mg4, B1) and maize (N136, P0, K40, S2, Zn1.8, Mg2, B1) crops, and STB dose for T. Aman crop (N65, P3, K27, S8) has been recommended for Potato-Maize-T. Aman cropping pattern in Rangpur region. In fertilized plots, there was an apparent negative balance for N and K. The balances for P and S were positive. Organic C, total N and available P in soil increased due to integration of chemical fertilizer with PM. Results indicate that it is necessary to apply organic manure in combination with chemical fertilizer for sustaining soil fertility. For maize and potato crops, fertilizer dose needs to be updated after every three years of successive crop cultivation under Potato-Maize-T. Aman cropping pattern. Net additional income was the highest in T5 where PM and IPNS based fertilizer applied.Bangladesh Rice j. 2016, 20(1): 51-58

Effect of Integrated Nutrient Management Practices on Growth and Development of Hybrid Maize Cultivar HQPM 1 in Mid-Hills of Meghalaya

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
SAMBORLANG K. WANNIANG ◽  
A. K. SINGH
Keyword(s):  
Dry Matter ◽  
Management Practices ◽  
Nutrient Management ◽  
Dry Matter Accumulation ◽  
Integrated Nutrient Management ◽  
Graduate Studies ◽  
Green Manuring ◽  
Maize Cultivar ◽  
Significant Difference ◽  
Hybrid Maize

A field experiment was conducted during kharif 2011 on experimental farm of the College of Post Graduate Studies (CAU–Imphal), Umiam (Meghalaya) to evaluate the effect of integration of green manuring, FYM and fertilizers as integrated nutrient management (INM) practices on growth and developmental behaviour of quality protein maize cultivar QPM 1. The data revealed that comparatively higher amount of primary nutrients were added in green manured maize plots in comparison to non green manured treatments. Green manuring also left a positive response on plant height, CGR, RGR leaf area, and dry matter accumulation in plants though the difference between green manured and non-green manured treatments was at par. Treatments 75 % RDF + 5 t FYM ha-1, 50 % RDF + 7.5 t FYM ha-1, 100 % RDF ha-1 and 75 % RDF + 2.5 t FYM ha-1 recorded significantly higher values of all the above said growth parameters over 50 % RDF + 5 t FYM ha-1 and control treatments. At all stages of observations, the maximum dry matter was associated with RDF (recommended doses of fertilizers) which was at par with 75 % RDF + 5 t FYM ha-1, but significantly higher over the plant dry weight recorded from all remaining treatments. A Significant difference in CGR at 30 – 60 and 60 – 90 DAS stage and in RGR at 90 DAS - harvest stage was observed due to various combinations of recommended dose of fertilizer with different doses of FYM. Number of days taken to attain the stages of 50% tasselling, silking and maturity did not differ significantly due to green manuring. However, treatment 75 % RDF + 5 t FYM ha-1 took significantly lesser number of days for these stages than other treatment combinations. The superiority of the treatment 75 % RDF + 5 t FYM ha-1 indicated a possibility of substituting 25% of RDF with 5 t FYM ha-1 without any loss in dry matter accumulation in plants of the quality protein hybrid maize in mid-hill ecosystems of Meghalaya.

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