Growth and Productivity of Giza 80 Cotton Cultivar as Affected by Foliar Feeding With Boron and Zinc.

Abstract

Two field experiments were carried out at Sids Agric. Res. Station, Beni-Suef Governorate, in 2007 and 2008 seasons. The experiment was conducted to evaluate the effect of foliar feeding with B and/or Zn on growth and productivity of the Egyptian cotton Giza 80 cultivar (G. barbadense L.,) to study response of growth, fruiting and yield. Besides the control treatment, two concentrations of both boron (85 and 170 ppm) and zinc (180 and 360 ppm) and their combinations were applied twice; at the start and peak of flowering. The experimental design was randomized complete blocks with four replications. Results revealed that, spraying boron and zinc either separately or in combination generally showed some positive effects on cotton growth, fruiting and yield in comparison with untreated control in both seasons, but such as some of their treatments significantly increased only plant height and number of fruiting branches/plant in 2007 season; number of open bolls/plant, boll weight and seed cotton yield/fad. in both seasons and seed index in 2008 season and significantly decreased fruit shedding % in 2008 season. Across the two studied seasons, the combined application of 85 ppm B and either 180 or 360 ppm Zn exerted the most consistently positive effects on cotton growth and fruiting and gave the highest seed cotton yield. The higher levels of either B or Zn (170 ppm B or 360 ppm Zn) showed no more benefits than those obtained of the lower ones (85 ppm B or 180 ppm Zn), rather than it tended to reduce them in case of boron. It could be concluded from this study that yield of Giza 80 cotton cultivar might be increased by spraying 85 ppm boron + 180 ppm zinc under the environmental conditions of this study or similar of them.

Effect of Foliar Application of Etherel and Combination of Some Micro-Nutreints on Productivity of Egyptian Cotton Plant

“…of open bolls / plant, boll weight, seed index as well as lint percentage due to the important role of B stimulating pollen germination and pollen tube growth resulting in successful fruit setting. These results are similar to those obtained by Niaz et al (2002) and El-Menshawy and El-sayed (2007) and Kassem et al (2009) indicated that spraying boron showed positive effects on cotton which significantly increased No. of open bolls/plant, boll weight and seed cotton yield/fed.…”

“…Similar results were obtained by Kassem and Alia (2003) and Schworz and Mendel (2006) who indicated that Mo. Is an essential element for higher plants and plays a vital role in many physiological and biochemical processes while, Kassem et al (2009), found that spraying boron showed positive effects on cotton which significantly increased plant height and number of fruiting branches per plant. were increased significantly by spraying Eth.…”

“…Many recent studies have demonstrated positive effects of foliar application of B on cotton growth, fruit retention, yield and yield components of cotton in Egypt (El-Menshawy and El-Sayed, 2007). Kassem, et al, 2009 and(Mesbah andEl-Gebiery, 2011) they found that spraying boron showed positive effects and significantly increased plant height, number of fruiting branches and number of open bolls/plant and also increase boll weight and seed cotton yield/fed. Nehro and Godara (2010) indicated that foliar application of B at the commence flowering and two weeks after first flowering at 0.1 % concentration increased yield and yield components.…”

The Physiological Response of Some Cotton Cultivars to Water Stress and Growth Inducers

“…In this regard, B is essential for cell wall formation; it plays a vital role in the growth and development of new cells and regulates auxin production in plants (Hamoda 2012;Zoz et al 2016). Kassem et al (2009) and Karadmir & Karademir (2020) stated that spraying with B had positive effects on cotton, which significantly increased plant height, number of fruiting branches, number of opened bolls/plant, boll weight, and seed cotton yield (k/f). In contrast, the favorable effects of Ca in cotton yield components might be attributed to the important role in enhancing photosynthesis and maintaining turgor under drought stress conditions.…”

“…More et al (2018) revealed the positive effects of spraying with B on growth, fruit retention, and yield components of cotton. Kassem et al (2009), Hamoda (2012), and Karademir & Karadmir (2020) illustrated that foliar application of B gives the highest values in leaves content of N, P, K, Mg, B, Fe, Mn, and Zn and significantly increases the seed cotton yield compared to control. Mixed Ca-B is essential for pollen grain germination and pollen tube elongation by helping in successful fertilization or pollination and banning the abortion of flowers.…”