Rice (Oryza sativa L.) is the second most important food in the world after wheat. Most rice is now grown in areas where the temperature is higher than the optimum growing temperature (28/22°C); therefore, a further increase in average temperature or high temperature occurring in the sensitive phase of the crop can affect growth and yield. Clutter. For every 1°C increase in daytime maximum/night minimum temperature from 28°C/21°C to 34°C/27°C, rice yield decreases by 7% to 8%. Additionally, the benefits that crops derive from high atmospheric carbon dioxide concentrations must be lost due to warming. The thermal stability of cell membranes is thought to correlate well with yield performance. Temperature is important in photosynthesis, but too hot can cause reduced photosynthesis of leaves and reduced distribution of dry matter to shoots and roots. The disadvantage of temperature is not limited to the above-ground rice. The underground area is affected, if not more, by the flood, and the temperature of the soil changes due to the heat. Future increases in global temperatures threaten people worldwide who depend on crops for their health and food security. In the past, the stress of the crisis on rice production focused on the rice crop. This review highlights the importance of rice in the world, the effect of high temperature on the growth, quality, yield and properties of rice, and the need for future research.

No abstract

To increase food security in a drought-prone area, the water harvesting, capture and storage of rainwater are technologies proven for uses during dry periods. Erosion control and groundwater revive are extra favorable circumstances of water harvesting techniques that contribute to agricultural development and resource conservation. The contour map of the study area is used to select the location for the creation of the farm pond. Clay loam is found in soil texture analysis. For clay loam soil, the study area with a depth of 3.5 m and a side slope of 1.5:1 may be suitable. The available rainfall was computed for 75% probability by using empirical formula is found to 1.41483 ha-m. The tube well draft was calculated to be 0.8640 ha-m. The capacity of the designed farm pond is 0.6639 ha-m. The proposed pond facilitated total supplemental irrigation of 8.5 cm depth to an area of 6.5 ha paddy.

Land and water are the prime resources that support all forms of life through various processes. Integration of Remote Sensing and GIS is incredibly helpful in planning and management of this resources, it is superior to the limitation of typical land planning, causes it embraces the metaverse of planning and development of resources through modern technology. In the study area, these resources are in critical condition; approximately 6.5 % of land is agricultural fallow land, 3 % is barren land, and 50 % is current fallow in Rabi season caused by the majority of agricultural land being unproductive due to poor land and water resource management. This research makes prudent and effective use of the watershed resources to increase productivity and production in the study area. The runoff computation of the watershed was done using the SCS curve number approach for 11 years (2009-2019), it reveals average annual rainfall of 1329 mm, with 41% of runoff generation capacity, which is estimated as 483.95 Mm3 of generated runoff. Methodology also includes Multi-Criteria Decision Analysis (MCDA) techniques and weighted overlay analysis (WOA) which effectively uses various thematic maps to delineate suitable zones for water storage and harvesting structures. Finally, suitable sites for 7 check dams, 10 percolation tanks for groundwater recharging and 20 check dams, 61 farm ponds for water harvesting were identified and proposed in the study area.  The research findings will help to conserve water and soil resources and may increase the agricultural area as well as the production and productivity of the respected field.

In floriculture, marigold is one of India's most important commercially grown flower crops, which ranked third in number after Roses and Chrysanthemum. The present experiment was carried out during the winter season of the year 2019-2020 & 2020-2021 in the laboratory field of the Dept. of SWE, SVCAET &RS, IGKV, Raipur (C.G.) India. To study the economical analysis of Marigold crop cultivation with major constraints, three kinds of growing media was used like Cocopeat, soil and Farm Yard Manure (FYM) in three  different growing containers viz:  Reusable flour bags, conventional grow bags and plastic bottles with all the same growing conditions. In marigold crop production shows that the Reuseable Flour Bag (RFB) produced 13.65 MT flower, followed by plastic bottle (PB) 13.18 MT and Conventional Grow Bag (CGB) 13.03 MT in the same way the net benefit was calculated as highest as 296997.89 /ha in RFB, 249095.86 /ha in plastic bottle and 131078.79 /ha in RFB. The benefit-cost ratio was found to be highest in plastic bottles as 2.093, followed by 1.847 in RFB and 1.277 in CGB.