Direct and residual effects of nitrogen fertilization, foliar application of potassium and plant growth retardant on Egyptian cotton growth, seed yield, seed viability and seedling vigor

Sawan, Zakaria M.; Fahmy, Alaa; Yousef, S. E.

doi:10.1016/j.chnaes.2009.05.008

Cited by 44 publications

(63 citation statements)

References 22 publications

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“…The soil type was a clay loam. Average textural and chemical properties of soil are reported in Table 1 [38]. Range and mean values of the climatic factors recorded during the growing seasons are presented in Table 2 [38].…”

Section: Methods and Measurementsmentioning

confidence: 99%

“…The first irrigation was applied 3 weeks after sowing, and the second one was 3 weeks later. Thereafter, the plots were irrigated every 2 weeks until the end of the season, thus providing a total of nine irrigations [38]. ) were applied as K sulfate (K 2 SO 4 , "48% K 2 O), eight weeks after sowing (as a concentrated band close to the seed ridge) and the application was followed immediately by irrigation.…”

Section: Methods and Measurementsmentioning

confidence: 99%

“…Seeds were planted on March, and seed cotton was harvest on October [38]. The soil type was a clay loam.…”

Section: Methods and Measurementsmentioning

confidence: 99%

“…The difference between the high rate and low rate (319 g·K·ha −1 ) was also significant. Increase in seed weight might be due to the effect of K on mobilization of photosynthates, which would directly influence boll weight and increase seed weight [38,91]. Ibrahim et al [13] reported that, the application of K fertilizer resulted in an increase in seed weight.…”

Section: Effects N K and Pgr On Oil Content Andmentioning

confidence: 99%

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Cottonseed yield and its quality as affected by mineral fertilizers and plant growth retardants

Sawan¹

2014

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The increase in the population in Egypt makes it imperative to explore promising approaches to increase food supply, including protein and oil, to meet the needs of the Egyptian people. Cotton is the principal crop of Egyptian agriculture, it is grown mainly for its fiber, but cottonseed products are also of economic importance. Cottonseed is presently the main source of edible oil and meal for livestock in Egypt. Economic conditions in modern agriculture demand high crop yields in order to be profitable and consequently meet the high demand for food that comes with population growth. Oil crop production can be improved by development of new high yielding varieties, and the application of appropriate agronomic practices. There is limited information about the most suitable management practice for application of N, P, K, Zn, Ca and PGRs in order to optimize the quantity and quality of oil and protein of cottonseed. In maximizing the quantity and quality of a crop's nutritional value in terms of fatty acids and protein, field experiments were conducted to investigate the effect of nitrogen, phosphorus, potassium, foliar application of zinc and calcium, the use of plant growth retardants (Pix, Cycocel or Alar), on cottonseed, protein, oil yields, and oil properties of Egyptian cotton. From the findings of this study, it seems rational to recommend that application of N, P, K, foliar application of Zn and Ca, the use of PGRs (Pix, Cycocel or Alar), could bring about better impact on cottonseed yield, seed protein content, oil and protein yields, oil refractive index, unsaponifiable matter, and unsaturated fatty acids in comparison with the ordinary cultural practices adopted by Egyptian cotton producers.

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Section: Methods and Measurementsmentioning

confidence: 99%

Section: Methods and Measurementsmentioning

confidence: 99%

“…Seeds were planted on March, and seed cotton was harvest on October [38]. The soil type was a clay loam.…”

Section: Methods and Measurementsmentioning

confidence: 99%

Section: Effects N K and Pgr On Oil Content Andmentioning

confidence: 99%

See 2 more Smart Citations

Cottonseed yield and its quality as affected by mineral fertilizers and plant growth retardants

Sawan¹

2014

Self Cite

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“…These effects can change assimilate partition, improving seed filling and, consequently, the physiological quality of seeds (SAWAN et al, 2009). However, high doses of these products may promote excessive shoot reduction (ESPINDULA et al, 2009b) and spike retention (ZAGONEL & FERNANDES, 2007) Ciência Rural, v.40, n.6, jun, 2010. levels in wheat seeds (RADEMACHER, 2000) and act on other metabolic pathways (HECKMAN et al, 2002, HAJIHASHEMI et al, 2007 promoting effects still not clear on plant development.…”

Section: Introductionmentioning

confidence: 99%