Effect of Foliar Spraying with Anti-Transpirants Natural Materials under Different Irrigation Intervals on Productivity and Quality of Cotton Plant cv. Super Giza 86
Keywords:Egyptian cotton, Licorice extract, ring seeds extract, photosynthetic pigments, irrigation interval
Two field experiments were carried out at El-Gemmeiza Agricultural Research Station, El-Gharbia Governorate, Egypt during 2018 and 2019 seasons to study the effect of irrigation intervals, spraying with two anti-transparent natural plant extract and their interactions on cotton plants using a strip plot design in three replicates. Data indicated that irrigation every 14 days as well as foliar feeding with the combination between licorice root extract and ring seeds extract at 8 g powder/L three times (at squaring stage, flowering initiation, and 15 days later) significantly increased mineral nutrients, photosynthetic pigments, total carbohydrates, total sugars, and free amino acids in the leaves. Fiber length in 2nd season, growth parameters, earliness measurements (except boll shedding% which decreased), seed cotton yield feddan-1 and its components in both seasons and lint strength in the 1st season were also increased. On
the other hand, it was found a significant decrease in phenolic and proline content as the combined analysis between the two growing seasons as well as number of total flowers per plant and micronaire reading due to irrigation at 14 days interval and foliar feeding with the combination between licorice root extract and ring seeds extract at 8 g powder/L and their interaction in one season only. It could be concluded that combined addition treatments of licorice root extract and ring seeds extract as foliar spraying at the two levels examined gave best results under different irrigation intervals used on productivity and quality of cotton plants. These natural compounds can be used safely to reduce the negative impact of drought and recommended to use when water scarcity becomes widespread under conditions like El-Gemmeiza location.
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