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Articles by M. A. Chang
Total Records ( 3 ) for M. A. Chang
  M. S. Chang , M. A. Chang , A. R. Lakho , A. W. Soomro and A. A. Memon
  Four newly developed strains; MPS-2, MPS-4, MPS-7, and MPS-11, were tested against two commercial, high yielding varieties CRIS-9 and NIAB-78, for two years (1996 and 1997) for seed cotton yield per hectare, ginning out turn percentage (Got), staple length and boll weight. The highest yield of 2209 kg /ha was obtained by MPS-2, followed by MPS-11 (2090 kg /ha). The increase of top yielding strain MPS-2 over commercial varieties CRIS-9 and NIAB-78 were 13.7 and 18.3%, respectively. The highest ginning out turn (38.3 %) was given by MPS-7 and highest staple length (27.0 mm) was measured in MPS-7.
  M. A. Chang , Rehana Anjum and A. R. Soomro
  An experiment was conducted to evaluate the earliness of four advance strains (CRIS-19, CRIS-52, CRIS-133 and CRIS-134) against one commercial variety CRIS-9 by using Bartlett`s Earliness Index. According to Bartlett "The higher the value of the index the earlier would be the variety". The results of this study demonstrated that CRIS-133 was recorded as earlier variety with 0.745 earliness index followed by CRIS-134 (0.719). CRIS-9 was observed as late variety with earliness index of 0.658 as compared to all other advance strains included in the test.
  Muhammad Iqbal , M. Zaffar Iqbal , Rao Sohail A. Khan , Khezir Hayat and M. A. Chang
  Mepiquat chloride (1, 1-dimethyl-piperidinium chloride) as a plant growth regulator that can used by producer to manage the crop development, uniformity and maturity. Field experiments conducted during 2002 and 2003 to evaluate the fact of row spacing and Mepiquat chloride application on cotton (Gossypium hirsutum L.) var. MNH-700. Four rates of Mepiquat chloride (4x123, 2x246, 4x246 and 4x370 mL ha-1) and a check with 0 mL ha-1 were evaluated for cotton growing in 25, 50 and 75 cm row spacing in 2002 and 2003. Plant height and number of total main stem nodes were different among row spacing and Mepiquat chloride application. The height was highest in plots where no application of Mepiquat chloride. Cotton grown in narrow row spacing (20 and 50 cm) had higher seed cotton yield than 75 cm row spacing, but reduce Ginning Out Turn (GOT) percentage in narrow row spacing negating any increase in seed cotton yield. In general reduced row spacing and Mepiquat chloride application did not lower fiber quality. In some cases, micronair was reduced in narrow row spacing (0.1), but values were in acceptable range for fiber traits. Mepiquat chloride is considered a desirable management tool to control crop growth. Ultra-narrow row spacing should practices only in the areas where plant growth is not accurate or upto the standard. In fertile soils, Mepiquat application is suggested for control of plant growth in efficient way under narrow row spacing in viewing the habit of cotton genotype.
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