The fall armyworm of maize, Spodoptera frugiperda (J. E. Smith) (Lepidoptera; Noctuidae) is capable of causing a 100% yield loss due to its unforeseen occurrence from the seedling to the cob formation stage. To manage this serious pest, maize growers are tending to apply a high dosage of pesticides. This indiscriminate usage of pesticides has resulted in an unacceptable amount of insect resurgence in maize, harming maize production and consumption. In this review, we prepared a list of practical pest management options, including host plant resistance, agronomical, cultural, biological, botanical, chemical, and biotechnology approaches. It was found that cultivation of tolerant genotypes, adjusting sowing windows, and practicing specific intercultural and cropping systems measures in addition to chemical and non-chemical pest management strategies showed encouraging results for sustainable management of fall armyworm, which could protect the crop. This review highlights novel and successful management options advocated in various parts of the world. Recommendations documented in this paper would certainly pave the way for successful management of fall armyworm in maize and other concerned crops.

Salinity stress is a major constraint to sustainable crop production due to its adverse impact on crop growth, physiology, and productivity. As potato is the fourth most important staple food crop, enhancing its productivity is necessary to ensure food security for the ever-increasing population. Identification and cultivation of salt-tolerant potato genotypes are imperative mitigating strategies to cope with stress conditions. For this purpose, fifty-three varieties of potato were screened under control and salt stress conditions for growth and yield-related traits during 2020. Salt stress caused a mean reduction of 14.49%, 8.88%, and 38.75% in plant height, stem numbers, and tuber yield, respectively in comparison to control. Based on percent yield reduction, the genotypes were classified as salt-tolerant (seven genotypes), moderately tolerant (thirty-seven genotypes), and salt-sensitive genotypes (nine genotypes). Seven salt-tolerant and nine salt-sensitive genotypes were further evaluated to study their responses to salinity on targeted physiological, biochemical, and ionic traits during 2021. Salt stress significantly reduced the relative water content (RWC), membrane stability index (MSI), photosynthesis rate (Pn), transpiration rate (E), stomatal conductance, and K⁺/Na⁺ ratio in all the sixteen genotypes; however, this reduction was more pronounced in salt-sensitive genotypes compared to salt-tolerant ones. The better performance of salt-tolerant genotypes under salt stress was due to the strong antioxidant defense system as evidenced by greater activity of super oxide dismutase (SOD), peroxidase (POX), catalase (CAT), and ascorbate peroxidase (APX) and better osmotic adjustment (accumulation of proline). The stepwise regression approach identified plant height, stem numbers, relative water content, proline content, H₂O₂, POX, tuber K⁺/Na⁺, and membrane stability index as predominant traits for tuber yield, suggesting their significant role in alleviating salt stress. The identified salt-tolerant genotypes could be used in hybridization programs for the development of new high-yielding and salt-tolerant breeding lines. Further, these genotypes can be used to understand the genetic and molecular mechanism of salt tolerance in potato.

Identifying sustainable crop production systems that improve yield from existing farmland while improving resource use efficiency is critical to meet the growing demands of the increasing human population and diminishing natural resources. Considering the increasing cost associated with inorganic fertilizer, integrated nutrient management using both organic and inorganic sources is important. Therefore, optimizing nutrient management practices that increase yield, improve soil quality, build up soil organic carbon storage, and maintain energy balance can help achieve sustainability in farming systems. In this regard, different nutrient management practices under the rice–rice (Oryza sativa L.) cropping system were evaluated using five different criterions, namely, (i) crop yield response, (ii) soil quality, (iii) soil carbon stock, (iv) energy efficiency, and (v) profitability under lowland situations in the Goa state situated in the western coast of India. We tested six nutrient management treatments, namely, inorganic fertilizers, organic (farmyard manure), rice straw, and their combinations over three years from 2016 to 2019. The results revealed that integrated nutrient management improved soil carbon stock, microbial biomass carbon, and soil fertility more than the other treatments. The integrated use of farmyard manure and chemical fertilizer showed significantly higher crop yield (9.86 v/s 9.41 Mg ha⁻¹), microbial biomass carbon (354 v/s 233.7 mg kg⁻¹ soil), soil carbon stock (36.65 v/s 25.5 Mg C ha⁻¹), energy efficiency (23.8 v/s 22.3), and net return (1776 v/s 1508 USD) than those associated with chemical fertilizer alone. We conclude that the application of chemical fertilizers/organic sources alone may not be sustainable for the rice–rice cropping system in the Goa state of India; the focus should be on integrated nutrient management systems.

The current study investigated inter-annual growth, biomass production, carbon storage, and sequestration in Eucalyptus tereticornis plantation of different age (1–8 years) in North-west India. Nondestructive sampling using the allometric equation assessed aboveground and belowground biomass of E. tereticornis plantations. The growth, biomass accumulation, and CO₂ assimilation followed the log-normal distribution with age of the plantation. At early stages, E. tereticornis showed rapid growth and within six months 1.4-time increment in DBH and height of one-year tree. Total carbon stock in E. tereticornis increased from 18.7–20.6 Mg C ha⁻¹ in 1-year to 91.8–96.2 Mg C ha⁻¹ after 8-year of planting. The soil organic carbon in 0–15 cm depth showed 34.8% increment in 8 years of plantation cycle highlighting the significance of litter input. Terrestrial C sequestration in the matured plantation (8 years) varied from 85.3 to 88.7 Mg C ha⁻¹ during September 2012 and March 2013, respectively. Total carbon stock (plant+soil) in 8-year plantation ranges from 114.1 to 118.8 Mg C ha⁻¹. Results confirm that E. tereticornis based plantation forestry offers a low-cost strategy for carbon sequestration besides increasing farm income.

Climate change impacts agricultural productivity and farmers’ income, integrated farming systems (IFS) provide a mechanism to cope with such impacts. The nature and extent of climatic aberrations, perceived impact, and adaptation strategies by the farmers reduce the adverse effects of climate change on agriculture. Therefore, a study was conducted to investigate 2160 IFS farmers about their perceptions of climate change, barriers, and the likelihood of adapting to the negative impacts of climate change. The study observed an increasing rainfall trend for humid (4.18 mm/year) and semi-arid (0.35 mm/year) regions, while a decreasing trend was observed in sub-humid (−2.02 mm/year) and arid (−0.20 mm/year) regions over the last 38 years. The annual rise in temperature trends observed in different ACZs varied between 0.011–0.014 °C. Nearly 79% of IFS farmers perceived an increase in temperature, decreasing rainfall, variability in the onset of monsoon, heavy terminal rains, mid-season dry spells, and frequent floods due to climate change. The arid, semi-arid, sub-humid, and humid farmers’ adapted several measures in different components with an adaption index of 50.2%, 66.6%, 83.3%, and 91.6%, respectively. The majority of the IFS farmers perceived constraints in adopting measures to climate change, such as meta barriers, capacity barriers, and water barriers. Therefore, we infer that educated farmers involved in diversified and profitable farms with small to medium landholdings are concerned more about climate change in undertaking adaptive strategies to reduce the environmental impact of climate change.