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    Biochar in conjunction with reduced doses of mineral fertilizers increased yield attributes and yield of rice (cv. BRRI dhan29)
    (Pakistan Journal of Botany, 2024-08-30) Md. Rayhanul Hoque; S.M Rahman; S.A. Ruba; J. Ferdous; Kamrunahar K.V.; Md. Rafiqul Islam; Zeki Erden; Muhammad Aamir Iqbal; Walid Soufan; Samer Abo Dawaba; Mohammad Sohidul Islam
    Recently, biochar (BC) applied in optimized quantities has emerged as an effective organic amendment for improving the physico-chemical features of the soil along with boosting the yield attributes of cereals. In the research field of Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur a field experiment was directed to assess the impact of BC implication united with reduced doses of recommended chemical fertilizers (RDF including N, P, K and S) on the growth and yield of rice (cv. BRRI dhan29). It was comprised of five treatments viz. T1= Recommended doses of RDF, T2 = BC 10 t ha-1, T3 = BC 10 t ha-1 + half RDF, T4= Biochar 7.5 t ha-1 + half RDF and T5 = BC 5 t ha-1 + half RDF. The experimental design was the regular arrangement of Randomized Complete Block Design (RCBD) along with four replications. The T1 treatment recorded the maximum plant height (103.00 cm) and the number of tillers hill-1 (26.10) which remained statistically identical to T3. Likewise, T3 out performed rest of regimes by recording the highest values of panicle length (24.89 cm), grains number panicle-1 (195.40), filled grains number panicles-1 (191.10), and 1000-grain weight (25.53 g). Moreover, the same treatment recorded for grain yield (7.82 tha-1) and straw yield (8.76 t ha-1) which was statistically at par to T1 (7.46 and 8.72 t ha-1, respectively). Furthermore, T3 also remained superior as for as biological yield (16.58 t ha-1) of rice was concerned. The outcomes of this trial reveal that BC (10 t ha-1) application have potential to reduce CF dose up to 50% for improving the yield attributes and grain output of rice. (cv. BRRI dhan29).
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    Citric Acid Alleviated Salt Stress by Modulating Photosynthetic Pigments, Plant Water Status, Yield and Nutritional Quality of Black gram [Vigna mungo (L.) Hepper]
    (Agricultural Research Communication Center, 2024-08-09) Md. Aktaru Hossain; Mst. Smrity Khatun; Mottaleb Hosen; Zakariya Ibne Sayed; Md. Rafiqul Islam; Md. Kaium Chowdhury; Muhammad Aamir Iqbal; Ibrahim Al-Ashkar; Zeki Erden; Cagdas Can Toprak; Ayman El Sabagh; Mohammad Sohidul Islam
    Background: Salt stress (SS) has seriously threatened the productivity of pulses including black gram in modern input-intensive farming systems which necessitates finding biologically viable, pro-farmer and environmentally friendly SS ameliorating strategies. Methods: An experiment was conducted to assess three levels of both SS (0, 50 and 100 mM NaCl) and citric acid (CA, 0, 50 and 100 mu M) applied as a foliar spray to ameliorate the deleterious effects of SS on black gram (cv. BARI Mash-3). The response variables included plant growth traits like plant height (PH), leaf number (BLPP) and root dry weight (RDW) along with chlorophyll contents (chl a, chl b and tchl), plant water status (relative water content RWC and water retention capacity WRC), grain yield (GY), stover yield (SY), biological yield (BY)) and harvest index (HI) along with nitrogen (N) and protein (P) content of black gram. Result: The results revealed that CA (100 mu M) remained unmatched by increasing PH (76.25%), NLPP (37.52%), RDW (83.67%), Chl a (17.80%), Chl b (11.59%), tChl (15.51%), RWC (9.81%) and WRC (26.64%) under highest level of induced SS. The same treatment also surpassed the rest of the doses in terms of grains number per pod (23.89%), 100 grains weight (59.74%), GY (82.86%), SY (59.66%), BY (64.94%) and HI. Moreover, CA accumulated N and P content (29.9%) in the grain under SS conditions. These results indicated that application CA alleviated the adverse effects of SS by triggering the growth, yield and nutritional quality which might be developed as a potent strategy to cope with the declining productivity of black gram in saline environment.