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Articles by Adel Ghoneim
Total Records ( 4 ) for Adel Ghoneim
  Amir Zaman Khan , H. Khan , Adel Ghoneim , R. Khan and Azza Ebid
  The objective of present study was to evaluate the relationship between different planting dates, densities and cultivars on soybean seed germination and vigor of seeds from plant growing in the field. Seeds of two soybean cultivars (Epps, [MG] V and Williams 82, [MG] III) were produced in the field from four planting dates and three planting densities in Peshawar, NWFP-Pakistan during 2000 and 2001. Brown (mature) pods were harvested, threshed and all shriveled and abnormal seeds were removed before determining standard germination and other vigor tests. Standard germination and other vigor tests decreased linearly (R2 = 0.53) from early planting dates to delay planting dates. Similar trend of decrease was observed from low planting density to high planting density. The decrease in AA was curvilinear (R2 = 0.78) and germination reached 15% in May planted crop. Seeds of Williams 82 was more sensitive to high temperature stress than seeds of Epps and seed vigor (AA) were much more sensitive to high temperature stress than was standard germination. Present findings support the results of experiments in controlled environments by demonstrating that high temperature during seed filling in the field, without seed infection with P. longicolla or physical injury, reduced soybean seed germination, vigor and all quality parameters of soybean seed under temperate environment.
  Azza Ebid , Hideto Ueno , Adel Ghoneim and Naomi Asagi
  This study was carried out in 2004 at Ehime University Experimental Farm (Japan) to assess the fate of carbon and nitrogen in paddy soils for rice cultivation by using 13C and 5N dual-labeled Maize Residue Compost (MRC) in comparison with Inorganic Fertilizer (IF) labeled with 10.5 atom% of 15N-NH4Cl. The MRC was applied to the rice (Oryza sativa L. cv. Koshihikari) at the rate of 20.0 Mg ha-1. There were no significant differences between IF and MRC in the growth and yield of rice. Rice took up nitrogen at the rate of 32.4 mg N pot-1, 7.30% from the IF pots and 29.4 mg N pot-1, 6.40% from the MRC pots. Nitrogen recovered from IF and MRC was 9.90 and 6.0% of grain, 25.1 and 16.4% of straw and 5.50 and 4.40% of root, respectively. Nitrogen uptake derived from the soil was significantly higher (p<0.05), in both treatments. Rice root recovered a considerable amount of carbon (3.74%) from applied MRC with 13C concentration being highest in straw (2.44% of applied C) as compared with grain (0.33%) and root (0.97%). Nitrogen loss was higher in the MRC (69.0%) treatment than in the IF treatment (53.0%). The loss of 13C from the MRC treatment stood at 69.0%, while residual 13C was 27.0%. The results demonstrate that rice plant absorbed a significant amount of nitrogen from MRC and carbon uptake through rice roots. It is concluded that the integrated use of MRC with low rates of inorganic fertilizers can sustain rice production and soil fertility.
  Azza Ebid , Hideto Ueno and Adel Ghoneim
  An incubation study was conducted to assess the effect of composted tea leaves, coffee waste and kitchen garbage on the kinetics of net nitrogen mineralization and P, K, Ca and Mg availability. NH4-N, NO3-N, Bray II P, the exchangeable cations, EC and pH were determined after 0, 7, 14, 21, 42 and 63 day. Inorganic N concentration in the amended soils was analyzed by a first-order model. The pH of the soil increased after 14-21 day of incubation and gradually decreased thereafter. EC values showed the following trend: composted tea leaves > kitchen garbage > coffee waste. The composts were highly variable in their N mineralization characteristics, but the peaks for mineralized N content were observed at early incubation times in all the composts, i.e., after 14-21 day because the composts had undergone maturation. Potential respective mineralizable N (N0) content of the composted tea leaves, coffee waste and kitchen garbage was 18.8, 6.30 and 22.4 mg kg-1 dry soil and the respective rate constant (k) was 0.101, 0.199 and 0.255 day-1. Rate of N mineralization for the composted tea leaves, coffee waste and kitchen garbage was 5.25, 9.10 and 38.6%, respectively, of the total N content. Composted kitchen garbage displayed the highest value for N release rate. P, K and Ca showed the following trend: composted tea leaves > kitchen garbage > coffee waste and Mg was composted tea leaves > coffee waste > kitchen garbage.
  Amir Zaman Khan , H. Khan , R. Khan , Adel Ghoneim and Azza Ebid
  To evaluate the effect of different wheat seed categories with farmer’s seed for yield and yield components. An experiment was conducted at Agriculture Research Farm, NWFP Agricultural University, Peshawar, during 2003-04. The experiment was laid out in Randomized Complete Block (RCB) design with four replications. The seed categories were pre-basic, basic and certified seed of wheat varieties Bakhtawar-92 and Fakhri Sarhad from CCRI, Pirsabak and were compared with farmer’s seed of the same varieties collected from 4 location of the province. Maximum emergence m-2 (183) was recorded from pre-basic seed of Bakhtawar-92 and Fakhri Sarhad collected from CCRI, Pirsabak followed by basic and certified seed category of the same location. Farmer’s seed collected from Peshawar locality gave minimum emergence m-2 (73) among different seed categories. Pre-basic cateroy of Bakhtawar-92 obtained from CCRI, Pirsabak gave maximum spikes m-2 (347.3), grains spike-1 (52.30), biological yield (11500 kg ha-1), grain yield (4931 kg ha-1), thousand grain weight (52.75 g) and harvest index (43.11%), followed by basic and certified categories of the same varieties and location. Among farmer’s seed, Bakhtawar-92 collected from Charsadda and Nowshera locality performed better in all yield parameters as compared to other locations. Farmer’s seed collected from Peshawar and Mardan performed poorly in maximum yield parameters. It is concluded that pre-basic seed of Bakhtawar-92 and Fakhri Sarhad obtained from CCRI, Pirsabak showed better performance in all agronomic parameters and may be recommended for higher production under the agroclimatic conditions of NWFP-Pakistan.
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