Significance of nitrogen, phosphorus, and boron foliar spray on jojoba plants

E A Khattab,M H Afifi,Gehan A Amin

doi:10.1186/s42269-019-0109-7

E A Khattab, M H Afifi + Show 1 more

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https://doi.org/10.1186/s42269-019-0109-7

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Abstract

BackgroundJojoba plants [Simmondsia chinensis (Link) Schneider] are appropriate to the semiarid regions; it has the ability to survive in a harsh desert environment and it is very drought-resistant and can be grown on marginal lands without replacing any existing crops. After that, Jojoba is a new oil-producing industrial crop, oil-producing cash crop, and has much of the interest in worldwide in recent years. So, processes are made to increase the seed yield of jojoba as requirements of essential fertilizer and evaluation of new clones. Two field experiments were conducted on five clones (S-BS-, S-700, 610, S-L, and S-G) aged 3 and 13 years from planting at North Sinai, Egypt on sandy soil to study the effect of foliar spray with nitrogen, phosphorus, and boron with three rates of NPB (00, NPB1 (N 1%, P 0.75%, and B 0.4%) and NPB2 (N 1.5%, P1.25% and B 0.8%)) on oil and other contents of jojoba plants.ResultsResults showed that all treatments improved the vegetative growth, yield, and seed quality. Concerning oil, weight of 100 seeds and oil percent in seeds with treatment NPB2 under clone S-700 gave the highest value for all study parameters.ConclusionsTherefore, for improving yield and seed quality, it could be recommended with foliar spray NPB2 (N1.5%, P 1.25%, and B0.8%) under the condition of this study on jojoba plants.

Highlights

BackgroundJojoba (Simmondsia chinensis L.) is an economically important shrub for it is extensively drought-resistant and can grow in semi-arid regions of the world, high soil salinity, and low fertilize requirement and requires little water according to Tal et al (1979), Al-Ani et al (1972), and Rasoolzadegan et al (1982). Yermanos (1982) showed that jojoba yield is a crop of seeds that have 40– 50% oil
Jojoba plants [Simmondsia chinensis (Link) Schneider] are appropriate to the semiarid regions; it has the ability to survive in a harsh desert environment and it is very drought-resistant and can be grown on marginal lands without replacing any existing crops
Jojoba (Simmondsia chinensis L.) is an economically important shrub for it is extensively drought-resistant and can grow in semi-arid regions of the world, high soil salinity, and low fertilize requirement and requires little water according to Tal et al (1979), Al-Ani et al (1972), and Rasoolzadegan et al (1982)

Summary

Background

Jojoba (Simmondsia chinensis L.) is an economically important shrub for it is extensively drought-resistant and can grow in semi-arid regions of the world, high soil salinity, and low fertilize requirement and requires little water according to Tal et al (1979), Al-Ani et al (1972), and Rasoolzadegan et al (1982). Yermanos (1982) showed that jojoba yield is a crop of seeds that have 40– 50% oil. While Benzioni and Ventura (1998) found that the application of different P levels in irrigation water on two clones of jojoba, 64 and 879–154, led to inhibit root development in both clones but to a higher degree for clone 879–154, but low concentration of P led to decrease in magnesium (Mg) and calcium (Ca) content in the leaves, while shoot growth or chlorophyll concentration were not affected. Many research represented that boron plays an important role in plant growth and development, cell wall strength and development, cell division, seed development, sugar transport, and hormone development; some functions of boron interrelate with those of nitrogen, phosphorus, potassium, and calcium in plant and stimulation or inhibition of specific metabolism pathways, according to Rasheed (2009) and George et al (2012)

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