EFFECT OF INORGANIC NITROGEN SOURCES WITH FOLIAR APPLICATION OF ZN AND B ON WHEAT (Triticum aestivum L.) CULTIVATED IN ALLUVIAL SOIL

Abstract

Feeding millions of poor people depend on wheat for both diet and livelihood, two field experiments were carried out at Abo-Zaher, Sherbin, Dakahlia Governorate, Egypt during the two successive winter seasons of 2013/2014 and 2014/2015 under alluvial soil conditions. Different sources of inorganic nitrogen fertilizers at recommended dose including urea (U), ammonium nitrate (AN), ammonium sulfate (AS) and calcium nitrate (CN) were applied to soil with foliar application of zinc (Zn) and/or boron (B). Several parameters of yield and yield components were recorded including vegetative growth, grain yield, total N, P and K content in grain and straw, total Zn and B content in grain and straw as well as quality parameters in grain and straw of wheat plant. The experiments were conducted in split plot design which consisted of the main plot (inorganic sources of nitrogen including U, AN, AS and CN as well as control) and sub plots (four treatments of micronutrient compounds including control, Zn, B, and Zn + B). The results revealed that Zn and/or B as foliar application of wheat plant under different sources of inorganic nitrogen fertilizers cause highly significant increases in all studied parameters of wheat grain and straw yields. Most of these parameters gave the highest values treated with ammonium sulfate as a soil application followed by urea. Foliar application of Zn or B as an individual effect caused high significantly increases for all studied parameters of wheat grain and straw in compared with the control (untreated). Combine foliar application of zinc + boron gave the highest values of all studied parameters of wheat grain and straw followed by individual Zn foliar application. Foliar application of Zn +B in addition to ammonium sulfate or urea results recorded the uppermost all studied parameters of wheat grain and straw. Therefore, it could be recommended that, under these experimental conditions, foliar application of both Zn and B in addition to ammonium sulfate followed by urea as soil application at recommended dose for wheat recorded the uppermost of vegetative growth (plant height and tillering height), yield components (weight of 100 grain and grain yield), N, P and K content in grain and straw, Zn and B content in grain and straw, chlorophyll a, b, protein content in grain and straw of wheat plant.

Response of Wheat Plants Grown on Alluvial and Sandy Soils to some Beneficial Elements. إستجابة نبات القمح النامي على أراضي رسوبية ورملية لبعض العناصر المفيدة

“…In other words, the values of all studied traits for plants received B either with foliar or soil additions significantly increased with increasing B rate from 0.0 mg L -1 to 2.5 and 5.0 mg L -1 and then significantly decrease at 10.0 mg L -1 due to appearing B toxicity. The findings are in accordance with those of El-Ghamry et al, (2016); Kumar et al, (2018);and Akeel and Jahan (2020).…”

“…On the other hand , it is known also that B possesses an essential role in a diverse range of plant functions e.g., pollination, seed set, movement of sugar or energy into growing parts of plants, cell wall formation and stability and maintenance of structural and functional integrity of biological membranes (El Hadidi et al, 2020). El-Ghamry et al, (2016) reported that B application to wheat plants positively affected. Also, it can be noticed that application of all studied beneficial elements as foliar application was most effective than as soil addition and this may be attributed to the high efficiency of foliar application method compared to soil addition method, where the foliar application method could reduce the lag time between application and uptake by the wheat plants (Ghazi et al, 2021).…”

“…Wheat is the main winter cereal crop in all the world, where the properties of its kernel make it the leading cereal for human food (El-Ghamry et al, 2016 andSalim andRaza, 2020). In Egypt, there is an urgent need for maximization of wheat crop production due to the local production isn't sufficient to equal the annual requirements (Kasim et al, 2020).…”