Effect of water stress and foliar feeding with boron and zinc under NPK fertilizer levels on growth and yield of the new promising cotton genotype (Giza 86 x 10229) [electronic resource]

By: Contributor(s): Language: English Summary language: Arabic Description: p. 27-48Other title:
  • تأثير الاجهاد المائي والرش ببعض العناصر الصغرى تحت مستويات مختلفة من التسميد على نمو ومحصول القطن للتركيب الوراثي الجديد (جيزة 86 * 10229) [Added title page title]
Uniform titles:
  • Fayoum journal of agricultural research and development, 2015 v. 29 (1) [electronic resource]
Subject(s): Online resources: In: Fayoum Journal of Agricultural Research and Development 2015.v. 29(1)Summary: Two field experiments were carried out at Sakha Agricultural Research Station at Kafr EI-Sheikh Governorate, Egypt, on new promising cotton genotype (Giza 86 X I0229) during 2013 and 2014 seasons to study the effect of water stress and foliar feeding with boron and zinc under NPK fertilizer levels on growth, earliness, yield, yield components and some fiber quality. Each experiment was laid out in a split split-plot design with four replications. The main plots involved three irrigation intervals (two weeks, three weeks and four weeks) throughout the growing season. The sub-plots were allocated to three NPK levels (60 kg N + 22.5 kg P20S + 24 kg K20lfed; 75 kg N + 30 kg P20 S + 36 kg K10/fed and 90 kg N + 37.5 kg P20 S + 48 kg K20/fed ) The sub sub-plots involved four foliar feeding treatments with boron and zinc(control (without foliar application), foliar application of Zn-EDTA, foliar application of B-EDTA. And foliar application of Zn-EDTA + B-EDTA). The timing of foliar applications were at the start and peak of flowering stages. The most important results obtained could be summarized as follows: 1- The obtained results revealed that increasing irrigation intervals to four weeks significantly decreased days to first flower, plant height at harvest, no. of fruiting plant, no. of open bolls/plant, boll weight and seed cotton yield/fed. In both seasons and days to first open boll in one season only. While, irrigation intervals did not exhibit significant effect on no. of monopodia/plant, first fruiting node, earliness %, seed index, lint presenting and fiber properties under study.
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Two field experiments were carried out at Sakha Agricultural Research
Station at Kafr EI-Sheikh Governorate, Egypt, on new promising cotton genotype (Giza 86 X I0229) during 2013 and 2014 seasons to study the effect of water stress and foliar feeding with boron and zinc under NPK fertilizer levels on growth, earliness, yield, yield components and some fiber quality. Each experiment was laid out in a split split-plot design with four replications. The main plots involved three irrigation intervals (two weeks, three weeks and four weeks) throughout the growing season. The sub-plots were allocated to three NPK levels (60 kg N + 22.5 kg P20S + 24 kg K20lfed; 75 kg N + 30 kg P20 S + 36 kg K10/fed and 90 kg N + 37.5 kg P20 S + 48 kg K20/fed ) The sub sub-plots involved four foliar feeding treatments with boron and zinc(control (without foliar application), foliar application of Zn-EDTA, foliar application of B-EDTA. And foliar application of Zn-EDTA + B-EDTA). The timing of foliar applications were at the start and peak of flowering stages.
The most important results obtained could be summarized as follows:
1- The obtained results revealed that increasing irrigation intervals to four weeks significantly decreased days to first flower, plant height at harvest, no. of fruiting plant, no. of open bolls/plant, boll weight and seed cotton yield/fed. In both seasons and days to first open boll in one season only. While, irrigation intervals did not exhibit significant effect on no. of monopodia/plant, first fruiting node, earliness %, seed index, lint presenting and fiber properties under study.

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