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Articles by Ahsanul Haque
Total Records ( 5 ) for Ahsanul Haque
  Ahsanul Haque , A. K. M. Faruquzzam , Hasina Banu , N. Islam , Md. Abdul Alim and Aleya Nasreen
  In a study, dust of deltamethrin @ 2 ppm and 3 ppm (T8), neem oil (T3), pithraj oil (T7), soybean oil (T1), sesame oil (T4) and jute oil @ 15 m/kg grain (T5), applied to kenaf seeds were fully effective up to 3, 3, 3, 2, 2 and 2 months respectively against adults of Z. subfasciatus Boheman. While castor oil less effective. (T1), (T3), (T4), (T5), (T6) and (T7) caused effective reduction in oviposition up to 2 months and (T8) caused effective up to 3 months. The higher doses of plant oils caused more then 70% egg mortality and reduced adult emergence significantly to prevented further infestation but the efficacy of lower doses deteriorated at later stages of sampling. Finally in another trial, each 500 g kenaf seeds of which each 5 % contained separately each of the four stages of Z. subfasciatus and also containing 5 pairs of adults, was treated separately with each of the above 8 treatments (only highest doses of T1 to T8) and was stored in sealed polythene bags. T1, T2, T3, T4, T5, T6 and T7 offered 86.85 , 81.40, 91.36, 84.34, 86.77, 84.70 and 83.69% grain protection respectively as against 87.54% infestation in the control experiment during 4 months of storage. The germination ability of seeds was not affected by any treatment.
  Md. A. Alim , M. M. Alam , S. Khandker , S. A. Ahmed , Ahsanul Haque and Nargis Akhter
  An investigation was undertaken to evaluate the impact of different crop residues on late jute seed yield and organic matter content of soil. The plant height, number of branch/plant, number of pod/plant, number of seeds/pod and seed yield/plant were significantly increased with different crop residues. The performance in seed yield were dry jute leaves (89.30%) > lentil straw (87.77%) wheat straw (43.28%) > compost (35.35%) > rice straw (32.740%) > saw-dust (16.91%) over the control. The resources increased the soil organic matter content in soil by 24.59, 22.92, 26.22, 19.67, 29.51 and 30.33% respectively over the control indicating the enrichment of soil health. In correlation studies it was observed that the jute seed yield parameters, the seed yield was highly correlated with plant height, number of branches/plant and number of pods/plant.
  Shamsuddin Ahmad , Ahsanul Haque , A.K.M. Faruquzzaman , M. Hussain and M.A. Hossain
  Out of eight kenaf (Hibiscus cannabinus L.) cultivars assessed under field conditions against spiral borer (Agrilus acutus Thumb.), two were rated resistant, one was moderately resistant, three were moderately susceptible and two were susceptible. Among the hybrids progenies one was rated resistant, two were moderately resistant, one was moderately susceptible, two were susceptible and one was highly susceptible. Among resistant cultivars and hybrids, differences in mean gall length were insignificant, however, in percent infestation and mean percent damage (APD), the differences were significant.
  Md. A. Alim , M. M. Alam , Ahsanul Haque , Nargis Akter , Zebun Naher and A. S. M. Iqbal Hossain
  An experiment was conducted to investigate the influence of fresh jute leaves as a source of plant nutrients on late jute seed production. Fresh jute leaves were collected just after harvest of jute crop and was incorporated to the soil at the rate of 0, 1, 2, 3, 4, 5 and 10 percent along with a recommended dose of chemical fertilizer (Urea-TSP-MP-Gypsum-Zincsulphate - Borax at the rate of 200-100-40-100-22-10 kg ha‾1 respectively). With the increasing rate of fresh jute leaves pH of the soil successively decreased from 6.47 to 6.31 and organic matter content of the soil increased from 2.45 to 48.36 % and nutrient contents in soil was also increased and of N, P, K and S were increased upto 47.36,53.00, 62.50 and 55.55 percent respectively. A highly significant increase in number of branch, number of pod and seed yield was obtained with 4,5 and 10 percent of fresh jute leaves and a spectacular increase was also found with 1,2 and 3 percent of fresh jute leaves. The seed yield was significantly correlated with number of branches, number of seeds and number of pods per plant.
  M. Monjurul Alam , A.K.M. Maqsudul Alam , S. Khandker , M.N. Gani , S.A. Ahmed and Ahsanul Haque
  Responsiveness of the variety Falgooni Tossa i.e. O-9897 (Chorcorus olitorius L.) in late jute seed production to Nitrogen (N), Phosphorus (P) and Potassium (K) was assessed in different Agro-Ecological Zones (AEZ) with increasing dose of N, P and K fertilizers. A highly significant effect was observed for plant height, number of branches/plant, number of pods/plant, pod length, number of seeds/pod, 1000 seeds weight and seed yield with the application of increasing doses of N fertilizer. There was no significant effect of increasing doses of P fertilizer on plant height, number of branches/plant, pod length and number of seeds/pod but a significant effect found for number of pods/plant, 1000 seeds weight and seed yield. No effect towards seed yield and yield contributing characters was observed with increasing doses of K fertilizer. Significantly high seed yields were found with the application of 100-20-20, 75-40-20 and 100-20-20 kg N-P-K/ha at Rangpur (AEZ No. 3b), Manikganj (AEZ No. 8d) and Kishorganj (AEZ No. 8b) respectively.
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