Abstract
Recently, nanofertilizers are being tested as a new technology, either for soil or foliar applications, to improve food production and with a reduced environmental impact. Nano calcium phosphate (NCaP) was successfully synthesized, characterized and applied in this study. A pot experiment was carried out in two successive seasons in 2016 and 2017 on (Phaseolus vulgaris L.) plants to obtain the best phosphorus treatments. The results were applied in a field experiment during the 2018–2019 season. Single superphosphate (SSP) at 30 and 60 kg P2O5 fed−1 and NCaP at 10%, 20% and 30% from the recommended dose were applied to the soil. Foliar application involved both monoammonium phosphate (MAP) at one rate of 2.5 g L−1 and NCaP at 5% and 10% from the MAP rate. The results of all experiments showed that NCaP significantly increased the shoot and root dry weights, the nutrient content in the shoot and root, the yield components, the nutrient concentration and crude protein percentage in pods of the snap bean plants compared with traditional P. The greatest increase was obtained from a 20% NCaP soil application in combination with a 5% NCaP foliar application. The present study recommends using NCaP as an alternative source of P to mitigate the negative effects of traditional sources.
Highlights
Published: 30 October 2021Agricultural land loses fertility as a result of human activity, which affects crop production and leads to starvation
The goals of this paper are to compare the effects of soil and foliar applications of nano calcium phosphate (NCaP) with those of conventional phosphorus fertilizers single superphosphate (SSP) for soil application and monoammonium phosphate (MAP) for foliar application on growth, yield and nutrient contents of snap bean plants, and to evaluate the suitability of using nano calcium phosphate as a partial alternative to conventional phosphorous fertilizers
It can be concluded that both soil and foliar applications of NCaP fertilizers increased plant growth and yield components better than traditional phosphate fertilizers did
Summary
Published: 30 October 2021Agricultural land loses fertility as a result of human activity, which affects crop production and leads to starvation. More than 40% of soils suffer from low available phosphorus [2], and according to some estimates, there will be no phosphorus reserve in the soil by the year 2050 [3]. Plants absorb 15–20% of phosphate in fertilizer added to the soil, while 80–90% rapidly converts to low-available forms [4]. Due to multiple problems associated with traditional phosphate fertilizers, nanofertilizers could be a suitable alternative. Nanofertilizers are more soluble and reactive relative to their traditional counterparts [8], easy to disperse with high tolerance for soil fixation [9], absorbed by plants, and released slowly to provide nutrients over long periods [10]
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