Eggshell powder as calcium source on growth and yield of groundnut (Arachis hypogaea L.)

Growth of Romaine Lettuce in Eggshell Powder Mixed Alginate Hydrogel in an Aeroponic System for Water Conservation and Vitamin C Biofortification

“…The reason for this increased trend could be that eggshell powder can be a source of nutrients and support. This could further be related to the studies performed by Vu et al, where the addition of eggshell powder showed improved growth characteristics in groundnut cultivation [34]. Fine hydrogels having smaller gel lengths could have led to the increased scope for water and nutrient availability to the plants.…”

“…Here, the leaf area incrementation (A i ) and shoot length increase (S i ) were monitored for 10 days. The addition of higher eggshell powder concentration yielded higher leaf and shoot lengths in lettuce plants compared to the lower eggshell powder concentration in plants [34]. For 5 and 7.5 wt.% ESP concentration in gels, the A i in the coarse and fine gels were found to be similar (Figure 4a).…”

“…Romaine lettuce is used for being widely used as a leafy green and has a variety of nutrients available that are beneficial for human health [32,33]. Eggshell powder, widely used in agriculture as a fertilizer and nutrient source for plants, has been used with the goal of providing nutrients and support to the plants over time, thus increasing the plant yield [34,35]. Ca-alginate, being a biodegradable hydrogel, has been previously used to increase plant growth, which has improved the water intake of plants [26,36].…”

Judicial nutrient management for sustainable production of groundnut: A Review

“…Calcium (Ca): Rajanarasimha et al, (2021) [93] found that among doses of (20,40,60) kg Ca ha -1 maximum number of pods plant -1 (21.33), kernels pod -1 (2), seed index (42.80g), kernel yield (2.17 t ha -1 ), haulm yield (5.60 t ha -1 ), harvest index (36.40%) obtains through 60 kg Ca ha -1 .Vu et al, (2022) [135] observed that eggshell as Ca source is very prominent, application of different doses of Ca sources as lime 500kg ha -1 , and eggshell powder (200, 300, 400, 500) kg ha -1 , 300 kg ha -1 eggshell powder resulted maximum pod plant -1 (11), 100 Pod weight (146.1g), 100 seed weight (58.7g), Pod yield (3.60 t ha -1 ).…”

“…Rajanarasimha et al, (2021) [93] found that among doses of (20,40,60) kg Ca ha -1 , maximum plant hight (79.89 cm) obtains in 40 kg Ca ha -1 along with 45 kg S ha -1 while the greatest number of nodule plant -1 (9.50), dry weight (17.46 gm) obtains with 60 kg Ca ha -1 along with 45 kg S ha -1 . Vu et al, (2022) [135] observed that eggshell as calcium source is very prominent, application of different doses of calcium sources as lime 500kg ha -1 , and eggshell powder (200, 300,400, 500) kg ha -1 , 300 kg ha [29] . Mg activates enzymes which affect plant growth and vigour (Chakraborty and Bose, 2020).…”