Northwestern India Research Articles

Risk-return trade-offs in diversified cropping systems under conservation agriculture: Evidence from a 14-year long-term field experiment in north-western India

Conservation agriculture practices are promoted to increase productivity, profitability, and sustainability across diverse cropping systems. Many studies have used these goals in decision support frameworks to identify the most effective treatment among those examined. While this approach is valuable, it lacks actionable guidance for farmers regarding maximizing return, while minimizing risk. It does not provide specific recommendations on how to allocate land across various cropping systems and tillage practices to achieve such objectives. This would require another long-term experiment exploring various combinations of treatments. To address this challenge, we propose the application of modern portfolio theory, specifically leveraging mean-variance and conditional value at risk optimization models. Using these models has enabled us to identify the optimal cropping system combinations with different tillage practices that maximized yield and net returns with minimal associated risk. The proposed approach allows for recommendations involving combinations of treatments that may not have been previously tested in a geography. In a 14-year long-term conservation agriculture study involving twelve combination of tillage and cropping systems, we showed how different combination of treatments differ in risk-return profile using mean-variance and conditional value-at-risk models that trace out a frontier of options—combinations of treatments that give highest returns at minimal risk. For example, we find that across risk neutral (most profitable) and most risk averse (lowest risk) farmers, the optimal treatments on the frontier encompass of maize-mustard-mungbean (MMuMb) under zero tillage and maize-wheat-mungbean (MWMb) under bed planting (which offer high returns and associated risk), maize-maize-Sesbania (MMS) under zero tillage (providing a balance of moderate returns and risk), and MMS under conventional tillage (yielding lower returns and risk). Additionally, risk-averse farmers stand to gain by diversifying their land allocation. For instance, they could allocate 54 % of their land to MMuMb under zero tillage and 46 % to MWMb under bed planting to target net returns of INR 1,32,000, with downside risk of INR 56,000, otherwise they can allocate 44 % and 56 % of their land to MMS under zero tillage and MWMb under bed planting, respectively, with a targeted net return of INR 1,22,000 and downside risk of INR 43,540. This highlights the nuanced trade-off between risk and return in maize based diversified cropping systems under different tillage practices. Leveraging mean-variance and conditional value at risk optimization models in the analysis of long-term experiments can yield novel treatment combinations that hold promise and can be recommended to farmers for implementation.

Clay Mineralogy and Solution Chemistry of Waterlogged Saline Soil Undergone Subsurface Drainage: Study from North-Western India-Western India

Clay Mineralogy and Solution Chemistry of Waterlogged Saline Soil Undergone Subsurface Drainage: Study from North-Western India-Western India

Tree Plantation Established with Saline Groundwater on Degraded Calcareous Soils of Dry Regions of North-Western India as an Option for Biomass Production and Soil Amelioration in the Scenario of Changed Climate

Tree Plantation Established with Saline Groundwater on Degraded Calcareous Soils of Dry Regions of North-Western India as an Option for Biomass Production and Soil Amelioration in the Scenario of Changed Climate

Sustainable Cropping Sequences to Improve Soil Fertility and Microbiological Properties

Different cropping systems and nutrient management techniques impact the microbiological characteristics of soil and nutrient availability for plants. This study assessed four cropping systems—rice–wheat, cotton–wheat, pearl millet–wheat, and pearl millet–mustard in Hisar district, Haryana, using 80 soil samples (20 from each system) collected in April 2022 after the Rabi crop harvest. The cotton–wheat system had the highest accessible nitrogen (N) at 155.9 kg ha−1, while both the cotton–wheat (59.3 kg ha−1) and rice–wheat (54.0 kg ha−1) systems had higher available sulfur (S) levels compared to pearl millet–wheat (41.2 kg ha−1). Pearl millet–wheat also showed 12.4% higher potassium (K) levels than rice–wheat. The rice–wheat system exhibited the highest phosphorus (P) concentration at 54.3 kg ha−1 and greater DTPA-extractable micronutrients. Soils from the rice–wheat system had higher DTPA-extractable micronutrients (Zn, Fe, Mn, Cu) and superior microbial biomass nitrogen (MBN, 54.7 mg kg−1), urease (37.9 µg NH4+-N g−1 h−1), and alkaline phosphatase activity (APA, 269.7 µg PNP g−1 h−1) compared to other systems. Canonical discriminant functions explained 88.1% of the variability among cropping systems, while principal component analysis identified available P, DTPA-extractable Zn, and Cu as key soil quality indicators, accounting for 66.9% of the variance. These insights can inform policymakers on promoting effective cropping systems and sustainable soil health in northwestern India.

The role of antecedent southwest summer monsoon rainfall on the occurrence of premonsoon heat waves over India in the present global warming era

Global warming has significantly increased the risk of heat waves (HWs) globally, with India being particularly vulnerable during the summer months (March-June; MAMJ). This study investigated the critical relationship between Indian summer monsoon rainfall (ISMR) and the occurrence of premonsoon HWs in subsequent years across the Indian subcontinent. It has been hypothesized that droughts during the ISMR could lead to more frequent HWs in the following MAMJ period. Using the Indian Meteorological Department's (IMD) gridded observed surface air daily maximum temperature (Tmax) dataset for the period 1951–2023, we analyzed the climatic patterns, interannual variability (IAV), and coefficient of variation (CV) of Tmax across India. The analysis compares two distinct periods: 1951–1999 (P1) and 2000–2023 (P2), with focus on Tmax trends and HW duration, distinguishing between short-duration HWs (SHWs, 2 days) and long-duration HWs (LHWs, 5 days or more). A key purpose of this study is to examine the relationship between the preceding all India summer monsoon rainfall (AISMR) and the occurance of various types of HW in the subsequent premonsoon season. In particular extreme AISMR events, such as droughts or excess rainfall, influence HW occurrence. The findings reveal a significant rise in Tmax across many regions of India during the MAMJ period, with the highest temperatures (> 37 °C) observed in northwestern, central, and eastern coastal areas. Northern India, particularly the Himalayan region, exhibits a greater interannual variability in Tmax, with June showing the most pronounced fluctuations. The study also highlights an increase in the frequency and intensity of HWs, especially in central and southern India, with the Chandigarh-Haryana-Delhi region recording the highest occurrences. A critical finding is the strong inverse relationship between the AISMR and conditions in the subsequent premonsoon season. Specifically, drought in the antecedent AISMR results in reduced soil moisture, which is strongly associated with higher premonsoon Tmax and an increased frequency of extreme heat events across India, particularly in regions prone to severe heat during this season. Drought conditions during AISMR are closely linked to higher HW frequencies in the following summer, especially in the central, northeast-central, and east-coastal regions. The frequencies of HW days, SHWs, and LHWs are significantly greater in years following AISMR droughts than in those following excess rainfall, indicating that drought years are more likely to lead to widespread HW activity. Despite the overall warming trends, some regions, such as the Indo-Gangetic Plain and parts of the Himalayan region, show cooling trends, although these trends are less widespread. The onset of the monsoon in June tends to reduce the intensity and spatial extent of warming, particularly in the central and eastern coastal regions, although significant HW trends persist in northwestern India and along the east coast. This study underscores the crucial role of AISMR in influencing HW events across India and highlights the need for adaptive strategies that account for the interactions between monsoon rainfall and HW risk, providing valuable insights for mitigating the impacts of HWs in the context of global warming.

The geology of the Shyok suture zone: evidence for Cretaceous extension of the southern Eurasian margin and Eocene India-Eurasia collision

This study discusses whether the Eurasian margin before the onset of the India-Eurasia collision was a Cordillera-style accretionary orogen or a more complex Japan-Mariana-style margin with extended back-arc basins and oceanic crust between the volcanic arc(s) and continental lithosphere. This distinction is critical to understand the development of the India-Eurasia orogenic system because each of these scenarios has very different implications for the timing of the continental collision between India and Eurasia. We present new field mapping, U/Pb zircon ages, and whole-rock geochemical results that constrain the tectonostratigraphic and structural development of the Shyok suture zone, which separates the Kohistan-Ladakh arc from the Karakoram terrane in north-western India and Pakistan. Our results show that the Shyok suture comprises a Jurassic forearc ophiolite overlain by Eurasia-derived sedimentary strata interlayered with andesites, which accumulated throughout the Cretaceous in a back-arc basin that was under extension between 115 and 72 million years ago. Closure of this back-arc basin post-dates the formation of the Indus suture zone between the Kohistan-Ladakh arc and India.

Transitions to crop residue burning have multiple antecedents in Eastern India

Far removed from the agricultural fire “hotspots” of Northwestern India, rice residue burning is on the rise in Eastern India with implications for regional air quality and agricultural sustainability. The underlying drivers contributing to the increase in burning have been linked to the adoption of mechanized (combine) harvesting but, in general, are inadequately understood. We hypothesize that the adoption of burning as a management practice results from a set of socio-technical interactions rather than emerging from a single factor. Using a mixed methods approach, a household survey (n = 475) provided quantitative insights into landscape and farm-scale drivers of burning and was complemented by an in-depth qualitative survey (n = 36) to characterize decision processes and to verify causal inferences derived from the broader survey. For communities where the combine harvester is present, our results show that rice residue burning is not inevitable. The decision to burn appears to emerge from a cascading sequence of events, starting with the following: (1) decreasing household labor, leading to (2) decreasing household livestock holdings, resulting in (3) reduced demands for residue fodder, incentivizing (4) adoption of labor-efficient combine harvesting and subsequent burning of loose residues that are both difficult to collect and of lower feeding value than manually harvested straw. Local demand for crop residues for livestock feeding plays a central role mediating transitions to burning. Consequently, policy response options that only consider the role of the combine harvester are likely to be ineffective. Innovative strategies such as the creation of decentralized commercial models for dairy value chains may bolster local residue demand by addressing household-scale labor bottlenecks to maintaining livestock. Secondary issues, such as timely rice planting, merit consideration as part of holistic responses to “bend” agricultural burning trajectories in Eastern India towards more sustainable practices.

Assessment of physicochemical properties among petroleum contaminated and normal soil: A multivariate statistical analysis

Soil surveying and mapping are vital operations in soil science. They contribute to the evaluation of changes in soil quality between various geographical regions. This study intended to investigate the effect of geographic variability on soil properties gathered from different geographical areas of the Rajasthan State of north-western India, using conventional analytical methods. Normal and petroleum-contaminated soils were collected from four diversified regions of Rajasthan: namely, hyper saline wetland (Sambhar), arid desert region (Jaisalmer), semi-arid region (Ganganagar) and humid irrigated plains (Banswara). The correlations between normal and contaminated soil for these four stations were investigated using multivariate analyses, principal component analysis (PCA) and statistical quality control. The one-way ANOVA test is applied to determine the statistical significance between different sampling stations for both normal and contaminated soil. Since the p-value in both cases is less than 0.05, it reflects a significant difference in physical properties among all four stations. The PCA analysis suggests that the first three components have Eigen values greater than one that can describe 100% of the total variability in soil properties. Heavy metals (Lead, Nickel and Copper) are the primary measures of variability between sample points for contaminated soil. In contrast, physicochemical properties (pH, Conductivity and Sodium) are the primary measures of variability between sample sites for normal soil.

Spectrum of Thoracic Diseases (Benign and Malignant) in North Western India: A Study of 2527 Cases

Spectrum of Thoracic Diseases (Benign and Malignant) in North Western India: A Study of 2527 Cases

Correction: Agro-Economic Assessment of Mechanized Rice Establishment Practices in Northwestern India: A Comparative Study

Correction: Agro-Economic Assessment of Mechanized Rice Establishment Practices in Northwestern India: A Comparative Study

Long-Term Manuring and Fertilization Influence on Soil Properties and Wheat Productivity in Semi-Arid Regions

Information on the long-term effects of the addition of organics and fertilizers to wheat under the pearl millet–wheat cropping system with semi-arid conditions in north-western India is still lacking. The present research was conducted in an ongoing field experiment initiated during Rabi 1995 at the Research Farm of Chaudhary Charan Singh at Haryana Agricultural University, Hisar. After 25 years, the impacts of nutrient management practices on soil fertility and wheat productivity were evaluated. The experiment comprised a total of eight treatment combinations viz. half and full doses of recommended fertilizers (N and P), organic manures (FYM: farmyard manure, POM: poultry manure, and PRM: press mud) alone and in combination with NP fertilizers. The conjoint application of organic manure and chemical fertilizers resulted in a positive influx of nutrients via increasing total organic carbon (TOC), available N, P, K, and S, which ranged from 0.46 to 1.42%, 122.70 to 194.70, 15.66 to 74.92, 340.5 to 761.2, and 15.26 to 54.63 kg ha−1 in surface soil (0–15 cm), respectively. Carbon fractions and crop yield were significantly improved by adopting integrated nutrient management (INM). The TOC showed a positive and significant correlation with C fractions (r > 0.92) and with soil-available N, P, K, and S (r > 0.77) content. The data also revealed a strong relationship between TOC and soil-available (0–15 cm) nutrients i.e., available N (R2= 0.769), available P (R2 = 0.881), available K (R2 = 0.758), and available S (R2 = 0.914), respectively. Thus, practices that increased TOC were also beneficial in enhancing the availability of the nutrients in the soil. A positive and highly significant correlation was also found among wheat yield, nutrient (NPKS) content, and uptake. A polynomial relationship between grain yield and grain N (R2 = 0.962), P (R2 = 0.946), and K (R2 = 0.967) content, and between straw yield and straw N (R2 = 0.830), P (R2 = 0.541) and K (R2 = 0.976) content was obtained. Integrated use of PRM7.5 followed by FYM15 and POM5 coupled with NP fertilizers proved best, which could be beneficial for obtaining nutritious and highest wheat yield (grain: 6.01 t ha−1 and straw: 7.70 t ha−1) coupled with improved fertility within a sustained manner under the pearl millet–wheat sequence in prevailing semi-arid conditions of the North Indian state of Haryana.

Pattern of physical growth and pubertal changes in adolescent girls with Systemic Lupus Erythematosus.

To study the pattern of physical growth and pubertal changes in adolescent girls with Systemic Lupus Erythematosus (SLE). Weight, height, BMI, waist and hip circumference among 50 adolescent SLE girls (aged 8-17 years) were cross-sectionally studied using standardized techniques and instruments. Breast development stage, presence or absence of pubic and axillary hair and age of attainment of menarche were also noted. With the advancement of age, weight and height of SLE girls increased but they were lighter and shorter compared to normal Indian peers. 18.4% of study girls were short-statured while only one participant was underweight. As per mid-parental height, 34.3% were predicted to have shorter final heights. BMI demonstrated an inconsistent trend with 12.3% and 9.2% being obese and overweight, respectively. Interestingly, 10.7% of SLE girls were at risk of metabolic syndrome (waist circumference >70th centile). About 50% of study girls had attained menarche (mean age: 13.04 ± 1.38 years). Appearance of pubic and axillary hair occurred around 1 year later than attainment of menarche. 33.80% of study subjects were in prepubertal stage of breast development and rest 66.20% were in advanced stages of breast development. SLE girls who had younger age at diagnosis and longer duration of therapy had significant delay in breast development and attainment of menarche. SLE girls show delayed growth and pubertal attainments compared to their normal Indian and Western counterparts. The data presented will provide an understanding of the auxological dynamics and pattern of pubertal changes among adolescent girls with SLE living in north-western India.

A Prospective Observational Study of Incidence, Associated Factors, and Impact of Spontaneous Intracranial Hematoma Expansion Admitted at a Teaching Hospital of North Western India

Abstract Background: Intra cranial hematoma (ICH) can be a life-threatening condition in many cases. The outcome depends on various factors, one such being spontaneous ICH expansion. Timely identification of ICH expansion can help us prognosticate the patient and provide individualized care. The present study aimed to determine the incidence of ICH expansion and determine the clinical and radiological variables predicting expansion; along with the prognosis of these patients. Materials and Methods: This prospective and observational study included 94 ICH patients, who presented within 24 h of symptom onset. ICH volume was measured using ABC/2 method, and repeat computed tomography was done within 72 h or when clinically indicated. Clinical and radiological parameters were noted and looked for the prognosis of patient after expansion in the form of average hospital stay, ICH score, and modified Rankin Scale (mRS). Results: Out of 94 patients, 14 (15%) patients showed expansion (10 males [71%], 4 females [29%]). In clinical profile, headache (P = 0.04) and hemiparesis (P < 0.001), and radiologically marginal irregularity (P < 0.001), hypodensities (P < 0.001), ovoid shape (P = 0.004), and circular shape (P = 0.04) showed significant results. While initial volume (P = 0.16), systolic blood pressure (P = 0.28), fluid level (P = 0.15), cerebral edema (P = 0.18), and Intra ventricular extension (IV) (P = 0.98) were more in expander group but did not reach to statistically significant level. Prognosis worsened with prolonged stay (P = 0.05) and deterioration of ICH score (P = 0.02) as well as mRS. Conclusions: Certain clinical (early presentation and hemiparesis) and radiological (hypodensity within hematoma, marginal irregularity, and ellipsoid shapes) parameters are significantly associated with hematoma expansion. Insight into these predictors can improve the prognosis of hematoma expansion in patients with spontaneous ICH.

Effect of climate change on the flowering phenology of Rhododendron arboreum Sm. in the Western Himalayas

Climate change poses a potent and immediate threat to global biodiversity. Increasing global temperatures have severe effects on the ecological dynamics of organisms. While temperature is a key factor in influencing the phenology of organisms, other environmental factors also play crucial roles. Rhododendron arboreum Sm. (R. arboreum) is an important keystone species of the Himalayan ecosystems with several ecological and economic benefits. Here, we focus on the impact of various factors that influence the flowering phenology of R. arboreum in the North-Western Indian Himalayan region (Chakrata Forest Division, Uttarakhand). Compared with previous herbarium records, we observed a shift in the onset of blooming in R. arboreum. The results showed a significant association with age, elevation, slope aspect, and sunlight on the flowering phenology of the species. We infer that understanding the cumulative effect of biotic and abiotic parameters is crucial for understanding the species’ phenology. In light of the ongoing warming, this study has potential application by park managers in designing conservation strategies in the Himalayas, one of the least studied and most threatened biodiversity hotspots of the world.

From Statistics to Stories: Unveiling the Epidemiology of Breast Carcinoma in Northwestern India

From Statistics to Stories: Unveiling the Epidemiology of Breast Carcinoma in Northwestern India

Agro-Economic Assessment of Mechanized Rice Establishment Practices in Northwestern India: A Comparative Study

Agro-Economic Assessment of Mechanized Rice Establishment Practices in Northwestern India: A Comparative Study

Anthropogenic impacts drive habitat suitability in South Asian bats

Despite their diversity and importance as ecological indicators and ecosystem service providers, the macroecology of bats in South Asia is poorly understood, and until recently studies on the ecological niches of these species have been rare. This study analyses the ecogeographic predictors of habitat suitability in South Asian bats by conducting ensemble ecological niche modelling using four algorithms (random forests, artificial neural networks, multivariate adaptive regression splines, and maximum entropy) to define suitability envelopes for 48 selected bat species, based on topographic, hydrographic, land-use, land-cover, and other anthropogenic impact factors. Anthropogenic impact variables showed high importance with Median Night-time Light being the biggest driver of habitat suitability for most of the study species with generally lower suitability of brighter areas. Projected suitable areas for individual species covered between 6.28% and 22.98% of the study area. Regions such as the Thar desert of northwestern India were consistently identified to have low suitability. The Western Ghats in India, the Himalayas in Bhutan, northern India, and Nepal, and Sri Lanka were identified as suitability hotspots for more than half the studied species overlapping with human-impacted habitats. This study offers insight into the impacts of anthropogenic pressure on the macroecology of bats in a megadiverse region and stresses the importance of analysing ecogeographic effects on ecological niches and habitat suitability, which can be vital to inform conservation planning and policymaking in the future.

Irrigation During Flowering Is Critical for Enhancing Productivity and Economics of Late-Sown Indian Mustard Compared to other Management in the Arid Regions of Western India

ABSTRACT Global warming delays the harvest of kharif crops, which delay the subsequent sowing of Indian mustard, especially in northwestern India and also causes dry winters that exacerbate challenges for the timely sowing of rabi-crops. To check this, a field experiment was conducted during the Rabi-seasons of 2018–19 and 2019–20 to assess the influence of sowing dates, irrigation, and fertilizer levels under late-sown conditions. A split-plot design was used with two sowing dates, two irrigation levels and four fertilizer levels (87.5%, 100%, 112.5% and 125% RDF; Recommended-fertilizers-dose). Crop sown in the 4th week of November significantly reduced seed (46.79 and 38.77%) and stover yield (43.72 and 41.62%) as compared to the 2nd week of November sowing during 2018–19 and 2019–20, respectively. Uptake of NPK by seed and stover was higher with the 2nd week of November sowing. The 2nd week of November sowing resulted in significant increase in water productivity by 63.72% and Benefit cost ratio (B:C) by 75.45% over the 4th week of November sowing. Irrigation at flowering stage increased the seed yield, water productivity and B:C by 11.94%, 1.72% and 9.17%, respectively, as compared to No post-sown irrigation. The biological yield of the Indian mustard increased with every increase in fertilizer doses but the response was significant up to 112.5% RDF (90 kg N, 33.75 kg P2O5 and 22.5 kg K2O ha−1). Application of 112.5% RDF increased the seed, stover yield, water productivity and B:C by 16.17%, 9.29%, 15.66% and 11.27%, respectively, over 87.5% RDF.

Females’ consumer engagement with fast moving consumer goods (FMCG) retail businesses in North-Western India

PurposeThe main fast moving consumer goods (FMCG) retail formats that customers engage with in India are Kirana stores, neighborhood convenience stores (NCS), supermarkets and online retailers. However, there has been less research done on the variables or antecedents that could favorably affect consumers' engagement with these FMCG retail formats. To improve retail practices, this study looks at how female consumers perceive the performance of FMCG retail formats on different antecedents of consumer engagement. The status of consumer engagement with FMCG retail formats was also analyzed.Design/methodology/approachThe present study used exploratory as well as descriptive research design. Previous studies were analyzed to identify the antecedents of consumer engagement. A structured questionnaire was used to collect the primary data from 400 female respondents of two major urban cities in north-western India. The descriptive analysis and one-way ANOVA test were performed to analyze the data.FindingsKirana stores’ performance on most of the antecedents was not satisfactory. Supermarkets and online retailers performed better on all antecedents. Customer marketing orientation and experiential marketing were the antecedents that required more attention from Kirana stores, NCS and supermarkets. Consumer engagement with online retailers was highest, whereas consumer engagement with Kirana stores was least.Originality/valueThis study offers a comprehensive examination of the antecedents of consumer engagement and consumer engagement with FMCG retail, which no prior research has studied in the context of FMCG retail businesses.

Mepiquat chloride, zinc and boron improves the productivity and profitability of kharif mungbean (Vigna radiata) in north-western India

Mepiquat chloride, zinc and boron improves the productivity and profitability of kharif mungbean (Vigna radiata) in north-western India