http://103.7.193.12:8080/xmlui/handle/123456789/106 2026-06-09T23:50:51Z 2026-06-09T23:50:51Z HAQUE, MD. ZIAUL http://103.7.193.12:8080/xmlui/handle/123456789/2144 2026-05-14T06:30:40Z 2019-05-01T00:00:00Z

PHYSIOLOGICAL ATTRIBUTES AND YIELD OF WHEAT AS INFLUENCED BY IRRIGATION AND NITROGEN FERTILIZER APPLICATION HAQUE, MD. ZIAUL The experiment was conducted at the research farm and laboratory of Crop Physiology and Ecology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh in 2014 - 2015 and 2015 - 2016 to study the morpho-physiological parameters, phenological stages, water relations, chlorophyll content, proline accumulation, nitrogen uptake, protein content, N use efficiency, yield and yield contributing characters of wheat. Benefit-cost ratio was calculated for cultivation of two varieties. Four levels of irrigations (i) I0- Rain-fed condition (control) (ii) I1- One irrigation (30 mm) (iii) I2- Two irrigations (30+30 =60 mm) and (iv) I3- Three irrigations (30+30+30 =90 mm) and four split application of nitrogen were (i) N0- control (no nitrogen) (ii) N1- total nitrogen at basal dose (iii) N2- one third of the N fertilizer was applied at basal dose, one third of the N fertilizer was applied at crown root initiation stage and the rest was applied at maximum tillering stage and (iv) N3- one fourth of the N fertilizer was applied at basal dose, one fourth of the N fertilizer was applied at crown root initiation stage, one forth was applied at maximum tillering stage and the rest was applied at heading stage. Two wheat varieties, namely, BARI Gom 24 and BARI Gom 26 were tested for the above mentioned parameters. The experiment was laid out in a split-split plot design with 3 replications. Irrigation and nitrogen treatments had significant effects on all above mentioned parameters in both the years. The plants grown in three irrigations (I3) condition needed the highest days for attaining their different phenological stages. Three irrigations exhibited the highest crop growth, morpho-physiological traits, water consumption, chlorophyll content, yield contributing characters, nitrogen uptake, grain and straw yield of wheat. With some exceptions, varieties had no significant effects on all the above mentioned parameters in this study. Among the nitrogen treatments, the highest crop growth, morpho-physiological traits, yield contributing characters, nitrogen uptake, protein content, N use efficiency, grain and straw yield were recorded in three split (N2) applications of nitrogen in both the years. Simple correlation coefficients between the yield contributing characters and grain yield for different irrigation and nitrogen treatments indicated that grain yield was positively correlated with yield components. In case of benefit-cost ratio, the highest benefit-cost ratio was found from BARI Gom 24 with three irrigations and three split applications of nitrogen. Wheat production with three irrigations gave the highest crop growth, morpho-physiological traits, water consumption, yield contributing characters, nitrogen uptake, grain and straw yield which were statistically similar with two irrigations. For the efficient use of nitrogen for wheat cultivation N fertilizer should be applied as three splits such as at basal, at CRI and during maximum tillering stages. PHYSIOLOGICAL ATTRIBUTES AND YIELD OF WHEAT AS INFLUENCED BY IRRIGATION AND NITROGEN FERTILIZER APPLICATION; A Dissertation By MD. ZIAUL HAQUE, Student No. 1405208; DOCTOR OF PHILOSOPHY IN CROP PHYSIOLOGY AND ECOLOGY, DEPARTMENT OF CROP PHYSIOLOGY AND ECOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY DINAJPUR- 5200, BANGLADESH; May 2019.

2019-05-01T00:00:00Z Akhter, Mst. Masuma http://103.7.193.12:8080/xmlui/handle/123456789/2141 2026-05-12T07:26:15Z 2019-02-01T00:00:00Z

EVALUATION OF WHEAT GENOTYPES FOR SUSTAINING YIELD UNDER WATER DEFICIT CONDITION Akhter, Mst. Masuma Drought is a worldwide problem, constraining wheat production seriously and recent global climate change has made this situation more staid. Selection of drought tolerant wheat genotypes as well as to development of proper crop management techniques is useful tools to enhance the drought tolerance. Regarding these issues, four experiments were conducted during 2014 to 2017 at Hajee Mohammad Danesh Science and Technology University and Bangladesh Wheat and Maize Research Institute (BWMRI), Dinajpur. Effect of PEG 6000 induced water stress (0, -2, -4 bars) on the germination and seedling growth of 30 wheat genotypes was evaluated in petri-dishes on September 2014. Wheat genotypes (BARI Gom 25, E 38, BAW 1118, E 18, Shatabdi, BAW 1138, E 34, E30, BAW 1135 and E 3) showing less affected speed of germination (rate of germination (%), co-efficient of germination and germination vigour index) and seedling growth (length and dry weights of shoot and root) along with higher STI (Stress tolerant index) based on seedling dry weight were considered as comparatively water deficit stress tolerant genotypes. The wheat genotypes (BAW 1151, E 42, BAW 1170, E 29, BAW 1161, E 2, BAW 1157, E 23, BAW 1130 and BARI Gom 26) showed reverse value of the aforesaid traits due to severe stress designating comparatively water deficit stress susceptible genotypes. To screen out more authentically based on yield traits and yield, all genotypes were grown in the field in 2014-15 under three water regimes viz. well watered (three irrigations), one irrigation and no irrigation condition. In no irrigated plots, wheat genotypes- BARI Gom 25, E 18, E 38, BAW 1118, BAW 1170, E 24, E 28, E 3, BAW 1171 and E 34 showed higher relative yield attributes and yield indicating tolerant, while BARI Gom 26, BAW 1130, BAW 1140, BARI Gom 27, BAW 1143, BARI Gom 28, BAW 1138, BAW 1157, E 23 and Sourav showed lower relative value signifying susceptible genotypes. Considering experiments I and II, four water deficit stress tolerant (BARI Gom 25, E 18, E 38 and BAW 1118) and two susceptible genotypes (BARI Gom 26 and BAW 1130) were evaluated physiologically in the third experiment. In view of chlorophyll content, SPAD value, water status (Relative water content, water retention capacity), canopy temperature depression, cell membrane stability (CMS), production of osmolytes (proline and soluble sugar), yield traits and yield, the genotype E 38 showed the highest stress tolerance and the genotype BAW 1130 showed the lowest stress tolerance. To ameliorate the adverse effect of drought stress, these two genotypes (E 38 and BAW 1130) were evaluated with five potassium fertilizer treatments in combination with water regimes during 2016-17. Additional soil and foliar application of potassium enhanced water stress tolerance in relation to LAI, LDW, TDW, water relation, nutrients (N, P, K) uptake, yield traits and yiled. However, considering the results of seed germination, seedling growth, physiology, yield traits and yield, the E 38 can be declared as a drought tolerant genotype, and addition of 75 kg K ha-1 may advised to apply for cultivation of wheat under rainfed condition in the drought prone area of Bangladesh. EVALUATION OF WHEAT GENOTYPES FOR SUSTAINING YIELD UNDER WATER DEFICIT CONDITION; A Dissertation By Mst. Masuma Akhter, Student No. 1405164; DOCTOR OF PHILOSOPHY IN CROP PHYSIOLOGY AND ECOLOGY, DEPARTMENT OF CROP PHYSIOLOGY AND ECOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY DINAJPUR, BANGLADESH; FEBRUARY 2019.

2019-02-01T00:00:00Z RAHMAN, MD. TAUFIQUR http://103.7.193.12:8080/xmlui/handle/123456789/1917 2025-10-29T09:26:00Z 2023-12-01T00:00:00Z

EFFECT OF SUPPLEMENTAL IRRIGATION AND MANURING ON PERFORMANCE OF BRRI dhan103 UNDER TERMINAL DROUGHT CONDITION IN AMAN SEASON RAHMAN, MD. TAUFIQUR An experiment was conducted at Crop Physiology and Ecology Research Field, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during August to November 2023 to find out the effect of supplemental irrigation and manuring on performance of BRRI dhan103 under terminal drought condition in Aman season. Rice variety BRRI dhan103 was used as planting material, The experiment was laid out in randomized complete block design with seven treatments and three replications. The treatments were, T1: Rainfed (control), T2: One supplemental irrigation at 80 DAT, T3: Two supplemental irrigation at 70 DAT and 80 DAT, T4: Additional 5 t ha-1 poultry compost, T5: Additional 10 t ha-1 poultry compost, T6: Additional 2.5 t ha-1 biochar and T7: Additional 5 t ha-1 biochar. The total number of plots was 21 and the size of unit plot was 2 m × 2 m. The performances of Aman rice in relation to plant height (cm), tillers hill-1, leaves hill-1, SPAD values, shoot and root dry weight as well as yield and yield contributing parameters such as panicles hill-1, filled grains panicle-1, grain weight panicle-1, thousand grain yield (g) and grain yield hill-1 were measured. All the growth parameters such as plant height, tillers hill-1, leaves hill-1, leaf SPAD value at 50 70 and 90 days after transplanting were enhanced significantly due to supplemental irrigation and manuring treatments. Yield attributes (panicles hill-1, filled grains panicle-1, thousand grain weight and grain yield hill-1 as well as grain yield m-2 of BRRI dhan103 was increased due to different supplemental irrigation and manuring treatments compared to rainfed control. The increment in grain yield m-2 was 7.27% in one supplemental irrigation, 18.41% in two supplemental irrigations, 27.04% in additional application of 10 t ha-1poultry compost, 15% in additional application of 5 t ha-1 poultry compost, 25.91% in additional application of 5 t ha-1 biochar and 11.81% in additional application of 2.5 t ha-1 biochar. The results of the present investigation indicated that growth, yield attributes and yield of BRRI dhan103 was affected due to terminal drought stage in Aman season. Two supplemental irrigations could effectively alleviate the adverse effect of terminal drought stage and additional application of poultry compost both at the rate of 5 and 10 t ha-1 and additional application of biochar at the rate of 5 t ha-1 was found effective for alleviating the adverse effect of terminal drought stage in T. Aman. EFFECT OF SUPPLEMENTAL IRRIGATION AND MANURING ON PERFORMANCE OF BRRI dhan103 UNDER TERMINAL DROUGHT CONDITION IN AMAN SEASON; A Thesis By MD. TAUFIQUR RAHMAN, Student No. 1601142, MASTER OF SCIENCE IN CROP PHYSIOLOGY AND ECOLOGY, DEPARTMENT OF CROP PHYSIOLOGY AND ECOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY DINAJPUR-5200, BANGLADESH DECEMBER 2023

2023-12-01T00:00:00Z ISLAM, MD. SOHIDUL http://103.7.193.12:8080/xmlui/handle/123456789/1870 2022-05-18T07:37:37Z 2012-03-01T00:00:00Z

Nutrio-physiological studies on saline and alkaline toxicities and tolerance in Foxtail millet (Sefaria italica L.) and Proso millet (Panicum miliaceum L.) ISLAM, MD. SOHIDUL Nutrio-physiological studies on saline and alkaline toxicities and tolerance in Foxtail millet (Sefaria italica L.) and Proso millet (Panicum miliaceum L.) MD. SOHIDUL ISLAM DEPARTMENT OF ENVIRONMENTAL DYNAMICS AND MANAGEMENT GRADUATE SCHOOL OF BIOSPHERE SCIENCE HIROSHIMA UNIVERSITY MARCH 2012

2012-03-01T00:00:00Z