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Articles by M. Tariq
Total Records ( 5 ) for M. Tariq
  M. Tariq and M. Shah
  Response of wheat to applied potassium was studied on Peshawar valley soil. Different levels of potassium @ 0, 30, 60, 90, 120 and 150 kg K2O ha-1 along with a basal dose of nitrogen and phosphorus @ 150 kg N and 100 kg P2O5, respectively were applied to wheat. Results showed that yield and yield components of wheat were not significantly affected with potassium fertilization, because the test soil had already sufficient potassium for plant growth and might be some of K+ released from non-exchangeable sources. However, 60 kg K2O ha-1 gave maximum fresh, dry, straw and grain yields and indicated initial level of K2O supplemented with 60 kg K2O ha-1 was sufficient for maximum yields of wheat for the test soil. Potassium uptake by leaves and potassium content of soils at pre heading and post harvesting stages was significantly increased in a linear fashion with increasing applied potassium levels in soil.
  M. Tariq and C.J.B. Mott
  This review is based on the hypothesis that B induce changes of other nutrient-elements in soil-plant systems. Since B is related to many physiological and biochemical processes are likely to affect the utilization of other plant nutrients, but yet no clear physiological and chemical mechanisms were proposed in the literature. However, B interactions, either synergism or an antagonism, can affect plant nutrition under both deficiency and toxicity conditions. There are clear differences observed and contradictions in plant nutrient response with regard to B supply, which must be due to the use of different growth media, crop species and varieties, plant parts analyzed, various growth stages and environmental conditions. The evidence suggests that the deficiency or excess of B not only affects the relative values of individual elements, but it also affects the balance among certain nutrient elements within plants, causing either an increase or decrease of dry matter production. Therefore, one might expect that the effect of B on the nutrient elements to be very complex. It can be concluded from the literature review that B play a role in the nutrient interactions within plant, but it is still not clear whether B is directly or indirectly involved in the interaction of certain nutrients, however the nature of these complex interactions are still obscure.
  M. Tariq , M. A. Khan and S. Perveen
  A field experiment was conducted to study the response of maize to varying levels of applied zinc. Zinc was applied @ 0, 5, 10, 15 and 20 kg ha -1 along with 120 N, 90 P2O5 and 60 K2O kg ha -1. Results indicated that the yield and yield components were significantly increased with applied zinc over control (with out fertilizer) and NPK alone treated plots. Zinc concentration in soils, in leaves and total uptake by maize also significantly increased with applied zinc, indicated zinc was deficient in the test soil. Therefore, zinc fertilization is necessary for maize crop under prevailing conditions. Moreover, the extraction capacity of AB-DTPA > DTPA for soil zinc and showed close correlation with plant zinc, suggested former method is suitable for extracting available zinc in calcareous soils.
  M. Javed Sultan , M. Altaf Sabri and M. Tariq
  Different control measures, viz., M.Y. (Muhammad Yousuf) Strategy (Pressurized water spray), Cultural practice (Picking and burrying of infested fruit) and Diptrex (trichlorfon) as cover and bait spray with Protein hydrolysate were tested for their effectiveness against the insect pests of bitter gourd (Momordica charantia L.). M.Y. Strategy gave better control of whitefly (Bemisia tabaci) as compared with Diptrex and Diptrex + Protein hydrolysate. In case of melon fruit fly (Bactrocera cucurbitae), Diptrex was the most effective followed by Diptrex + Protein Hydrolysate and cultural practice but the M.Y. Strategy showed no effect.
  M. Tariq , M. Sharif , Z. Shah and R. Khan
  An experiment was designed to study the effect of foliar application of micronutrients on the yield, quality and leaf composition of sweet orange, Blood red variety at Shabazgari, Mardan. The experiment was laid out in a randomized complete block design in 23 factorial arrangement. Zinc, manganese and boron were applied as foliar spray at the rate of 0.4, 0.2 and 0.04 kg ha-1, respectively in the presence of 1.56 kg N ha-1 as urea and 0.4 kg surfactance ha-1 (as wetting agent) in 400 L of water. The maximum fruit yield was obtained, when 0.4 kg Zn ha-1 and 0.2 kg Mn ha-1 was sprayed along with 1.56 kg N ha-1 and 0.4 kg surfactance ha-1 in 400 L of water. The minimum % peel was obtained with B alone and minimum % rag with Zn + Mn, maximum fruit size with Zn + B and maximum fruit volume with Zn + Mn. Similarly, % juice in sweet oranges was increased significantly by B alone, reducing sugar by Mn alone and vitamin C contents by Zn + B through foliar spray, suggested that each micronutrient had different role on the quality of citrus fruit. Foliar spray of Zn, Mn and B along with urea significantly increased the concentration of Zn and Mn in citrus leaves, while the concentration of B was not affected with foliar spray, perhaps due to dilution within the citrus tissues. Therefore, it is suggested that either Zn+Mn or Zn+B may be applied as foliar spray in combination with urea and surfactance for getting the maximum yield and improved quality of citrus fruit under prevailing conditions.
 
 
 
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