Chapters authored
Effect of Phosphorus on Root Signaling of Wheat under Different Water Regimes
Phosphorus (P) is one of the most vital nutrient needed for crop production. Phosphorus plays an important role in root growth and builds resistance against abiotic stresses. In the current study two wheat cultivars (phosphorus responsive) were planted to study the treatment effects in polythene bags. The treatments were 5 different levels of P (P0 = 0.2 g/bag, P60 = 0.4 g/bag, P80 = 0.53 g/bag, P100 = 0.66 g/bag and P120 = 0.8 g/bag) and three water regimes. The data regarding root length, shoot length, root-shoot ratio and yield parameters were collected and analyzed. Among both the genotypes, NARC-2009 performed well compared to Sehar-06. The highest dry matter and yield were obtained under P100 compared to other treatments. With the increased phosphorus root and shoot length increased linearly up-to P100 while afterward it starts decreasing. The results lead to conclusion that optimum dose of phosphorus could be used to increase root growth and establishment under water stress.
Part of the book: Global Wheat Production
Climate Change Impacts and Adaptation Strategies for Agronomic Crops
Climate change is a serious threat to agriculture and food security. Extreme weather conditions and changing patterns of precipitation lead to a decrease in the crop productivity. High temperatures and uncertain rainfall decrease the grain yield of crops by reducing the length of growing period. Future projections show that temperature would be increased by 2.5°C up to 2050. The projected rise in temperature would cause the high frequent and prolong heat waves that can decline the crop production. The rise in temperature results in huge reduction in yield of agronomic crops. Sustaining the crop production under changing climate is a key challenge. Therefore, adaptation measures are required to reduce the climate vulnerabilities. The adverse effect of climate change can be mitigated by developing heat tolerant cultivars and some modification in current production technologies. The development of adaptation strategies in context of changing climate provides the useful information for the stakeholders such as researchers, academia, and farmers in mitigating the negative effects of climate change.
Part of the book: Climate Change and Agriculture