Crop Health Monitoring through Remote Sensing: A Review

Agriculture is basis of livelihood for a major portion of world population. It provides food to humans. With the increasing population and climate change there is need to enhance production to fulfil the demand of growing population. Remote sensing technology has potential to predict nutrient requirement by providing various information related to plant and soil in quantitative terms thereby increasing productivity. It plays important role in monitoring crop health, crop growth and development, nutrient management, pest and disease management, water management and weed management. Evaluation of crop canopy provide various information regarding agronomic parameters. The data obtained from remote sensing provides a better alternative for natural management than traditional methods and this kind of management enhances efficiency of various resources by avoiding their overuse. By using this technology, we can improve traditional methods of agriculture and bring out changes in the field of agriculture. This paper reviews remote sensing technology for crop health monitoring, highlighting its importance with new ideas for agriculture.

Effect of Integrated Nutrient Management on Growth, Yield Attributes, Productivity and Profitability of Direct Seeded Rice under Rainfed Conditions

A field experiment was conducted to evaluate the effect of integrated nutrient management on growth, yield attributes, productivity and profitability of direct seed rice under Rainfed conditions during Kharif in 2019-20 at kuthulia farm, JNKVV, Rewa (M.P.). The experiment was laid out in randomized block design with nine treatments and three replications. The results indicated that the treatment 50% RDN through fertilizer + 50% RDN through compost + seed treated with Azotobacter @ 10 g kg-1 seed recorded significantly higher growth, yield attributes and productivity viz. plant height (74.90 cm), number of tillers m-2 (387.00), number of productive tillers m-2 (340.66), panicle length (23.57 cm) and weight (3.76 g), total grain per panicle-1 (82.33), 1000-grain weight (26.69 g), grain yield (3799 kg ha-1), straw yield (6438 kg ha-1) and harvest index (37.11%). The profitability viz. Gross returns (78608 Rs. ha-1), Net returns (65650 Rs. ha-1) and B:C (2.38) of rice was also higher in 50% RDN through fertilizer + 50% RDN through compost + seed treated with Azotobacter @ 10 g kg-1 seed. The study concluded that combined use of organic and inorganic sources of nutrients with biofertilizer enhanced crop growth, yield attributes, productivity and profitability of direct seeded rice.