Highest Number Of Tillers Research Articles

Effect of Row Orientation on Productivity Of Sugarcane With Potato as Intercrop

An experiment was carried out at the Regional Sugarcrop Research Station (RSRS) farm, Thakurgaon under the agro-ecological zone of Old Himalayan Piedmont Plain (AEZ-1) of Bangladesh, during 2016-2017 to 2017-2018 cropping seasons to evaluate the impact of row orientation on the productivity of sugarcane with potato as intercrop. Under the study eight treatments viz T1: Single row cane (SRC) only in north-south direction, T2: SRC + potato in North-South direction, T3: SRC only in east-west direction, T4: SRC + potato in east-west direction,T5: Paired row cane (PRC) only in North-South direction, T6: PRC + potato in north-south direction, T7: PRC only in east-west direction and T8: PRC + potato in east-west direction were tested following Randomized Complete Block Design with three replications Significant differences were found among the observed parameters except germination (%) of setts, number of internodes per stalk and unit stalk weight of sugarcane. The highest number of tiller and millable cane population, cane yield and brix reading were achieved from the treatment SRC + potato in the North-South direction. The highest intercrop yield, equivalent cane yield of intercrop, total adjusted yield and gross return were obtained from the treatment PRC + potato in north-south direction, but the highest net return and benefit cost ratio were obtained from the treatment SRC + potato in the North-South direction. Having the highest cane yield, net return and benefit cost ratio with less variable cost, sugarcane planting in a single row system with potato as intercrop in a North-South row direction could be considered the best package practice for successful sugarcane farming. Bangladesh Agron. J. 2024, 26(2): 7-15

Efficacy of nitrogen and Azolla spp. on growth and yield of black rice (Oryza sativa L.)

An experimental field study was carried out in the Kharif season of 2023 at the Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (U.P.). The experimental replications were conducted using a Randomized Block Design, with three levels of Nitrogen (0, 60, 90kg N/ha) and Azolla spp. (2, 4, 6t/ha), and one Control (NPK 120:60:60 kg/ha). In all, there were a total of ten treatments, each reproduced three times. The tested field had sandy loam soil texture with a neutral soil pH of 7.6, low organic carbon content of 0.372%, nitrogen content of 278.4 kg/ha, phosphorous content of 29.5 kg/ha, and potassium level of 217.3 kg/ha. The experimental results showed that treatment T₉ obtained significantly higher plant height (107.77 cm), dry weight (66.05 g), crop growth rate (57.27 g/m2/day), relative growth rate (0.0279 g/g/day), highest number of tillers per hill (22.07), panicles per m2 (282), test weight (15.23 g), grain yield (3.67 t/ha), stover yield (6.7 t/ha), and harvest index (35.74%). Transplanted Black Rice of variety BPT-2841 exhibited significantly greater maximum gross return (1,80,551.40 INR/ha), net return (1,05,496.30 INR/ha), and B:C ratio (1.41) in treatment T9. The investigation concludes that Nitrogen, being easily transportable in soil and plants, is a constituent of amino acids, nucleic acids, chlorophyll, enzymes, and hormones. These factors are essential in plant physiology and are associated with increased tillering, biomass production, protein synthesis, grain filling, yield, and quality. The availability, absorption, and utilization of nitrogen have a significant impact on these processes. Therefore, in the present experiment, the nitrogen requirements are met by applying 90kg of nitrogen through urea combined with 6t/ha of Azolla spp. This approach revealed superior performance in terms of both crop yield and economic returns .

Growth and Yield of Celery (Apium Graveolens L.) in Organic Cultivation on Alluvial Soil

Celery (Apium graveolens L.) is a horticultural crop that is consumable and offers numerous health benefits. The purpose of this study was to ascertain how celery growth and yield cultivated on alluvial soil were affected by the interaction between liquid organic NPK fertilizer and chicken manure. The study utilized a field experiment that was designed completely randomized comprising two factors. The first factor was the dosage of chicken manure with three levels: C1: 50 g/pot, C2: 100 g/pot, and C3: 150 g/pot. The second factor was liquid organic NPK fertilizer with three levels: L1: 1%, L2: 2%, and L3: 3%. All treatment combinations were performed in triplicates. The results indicated that the interaction between chicken manure and liquid organic NPK fertilizer significantly affected the number of tillers and dry weight of celery yield. Chicken manure as a single factor significantly influenced the number of stems and tillers. Liquid organic NPK fertilizer as a single factor significantly influenced the number of tillers, fresh weight, dry weight, and plant height. The combination of chicken manure and liquid organic NPK fertilizer (C1L3) produced the highest number of stems per clump (79.44 stems) and the highest number of tillers per clump (9.78 tillers). The combination of C2L3 yielded the highest fresh weight (184 g) and dry weight (17.33 g). Keywords: Alluvial soil, Celery, Chicken manure, Liquid organic NPK fertilizer

Enhancing rice yields through foliar application of essential micronutrients: A study on zinc, copper, and boron nutrition in context of Nepal

Quantitative data on the effects of essential micronutrients—boron, zinc, and copper—on rice (Oryza sativa L.) are limited, which hampers optimized crop management strategies. This study aimed to enhance rice yields through the foliar application of these micronutrients. Conducted in 2022 at Gokuleshwor Agriculture and Animal Science College using a randomized complete block design with three replications, the research tested different combinations of these elements on the local rice variety Kaljade. The treatments included: T1 (control), T2 (zinc), T3 (copper), T4 (boron), T5 (Zn + Cu + B), T6 (Zn + Cu), and T7 (Zn + B), with doses of 5 kg/ha for zinc and 2 kg/ha each for boron and copper. The results demonstrated significant effects of the micronutrient treatments on all parameters studied. Notably, the combination of zinc, copper, and boron (Zn + Cu + B) led to the most favorable outcomes. This treatment resulted in the shortest maturity duration (116.3 days after transplanting), the highest number of tillers (22.5), and the tallest plant height (107.7 cm). Additionally, Zn + Cu + B produced the greatest leaf area index (0.0724), the highest number of grains per panicle (22.6), and the heaviest thousand-grain weight (21.83 g). Furthermore, Zn + Cu + B achieved the highest biological yield (12.35 t/ha) and grain yield (5.9 t/ha), markedly higher than the control treatment (4.12 t/ha). These findings highlight the significant role of zinc, copper, and boron in rice cultivation. The study underscores the potential of foliar application techniques to optimize micronutrient availability, thereby enhancing rice yields. For future agricultural practices in the study area, focusing on zinc, copper, and boron nutrition is crucial to further augment crop productivity and ensure food security.

Productivity of elephant grass pakchong (Pennisetum purpureum cv Pakchong) and elephant grass taiwan (Pennisetum purpureum cv Taiwan) cultivated based on different stem cutting sizes

Abstract In Indonesia, elephant grass seeds used by farmers are in the form of cuttings or vegetative material. Currently, there is no standard for the cuttings used to produce high-productivity elephant grass. Therefore, research was conducted to determine the optimal size of cuttings for achieving good elephant grass productivity. The study was conducted in the field station area of Rancamaya, Bogor. A factorial group randomized design with 5 replications was employed for the research. The first factor was the type of elephant grass, consisting of 1) Pakchong and 2) Taiwan, while the second factor was the size of the cuttings, consisting of 1) 5 cm long cuttings, one node, 2) 10 cm long cuttings, one node, 3) 15 cm long cuttings, one node, and 4) control (two nodes as per usual farmer practice). The research results indicated that there was an interaction between the type of elephant grass and the size of cuttings for leaf length, fresh and dry leaf weight, dry stem weight, and total dry weight. The 5 cm cuttings of Pakchong had the highest fresh and dry leaf weights (P<0.05). The highest dry stem and total weight were obtained with the control size cuttings of Pakchong. The number of tillers was influenced by the size of cuttings, with the control size cuttings having the highest number of tillers, although not significantly different from the number of tillers for the 5 cm and 15 cm cuttings. The highest total fresh weight was obtained with the 5 cm cuttings and Pakchong. This study indicates that 5 cm cuttings can be used as cutting material to produce Pakchong and Taiwan with optimal forage production. Further research is needed to assess the forage quality.

Growth Evaluation of Selfcrossed Progenies BC1F2 Experiencing Submerged and Non-submerged at BC1F1 and its Parents

A non-tidal swamp is an option to increase the rice harvested land and production, however, its utilization still depends on the natural condition so the plants are vulnerable to submergence and drought stress. Developing dual-tolerant varieties is the right choice for developing rice cultivation in non-tidal swamps. Inpara 8 has the SUB1 gene which is tolerant to submergence stress and Inpago 5 is tolerant to drought stress. The study aimed to evaluate the growth of BC1F2 from Inpara 8 and Inpago 5 that experienced submerged stress and its parents (Inpago 5 and Inpara 8). The research was carried out at the greenhouse of Agriculture Faculty, Sriwijaya University on July 2021 – January 2022. Inpago 5 has the highest average plant height ( 145.81 cm ), the highest number of tillers (4.73), the most productive tillers (3.87), and the highest total grain in the clump (720.87 grains), the weight of the clump grain (15.86 g) and the lowest percent of empty grain (33.47 %). The donor parent Inpara 8 had the highest average total grain per panicle (192.08), and the highest dry weight (20.69 g). BC1F2 Submerged had the highest average 1000 grain weight (25.26 g) and the fastest harvest age (114.50 DAP). The BC1F2 selfcross progeny which had experienced submergence stress and was not in the BC1F1 phase had almost the same characteristics as its two parents as indicated by the results of the observed parameters which generally did not show any significant differences.

Effect of Different Levels of Nitrogen on Growth, Yield and Productivity of Wheat (Triticum estivum L.) Cv. Koshan-02

The field experiment was conducted to study the effect of different levels (0, 50, 70, 90 & 110 kg N ha-1) of Nitrogen (N) on growth, yield and yield related parameters of wheat (cv. Koshan-02) in Kabul agro-climate condition at the Agricultural Research Farm of Kabul University, during spring 2020-21. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications, each replication consisted of five treatments. Total treatments were (15). The size of each plot was (2mx3m=6m2). The result of our study revealed that the plots treated with highest level (110 kg N ha-1) of N fertilizers produced the highest plant height (85.97cm). maximum number of grains spike-1 (35.74), the highest dry matter (3.937t ha-1), The highest number of tillers m-2 (152.76 m-2), 1000-grain weight (48.94g), grain yield (2891.1kg/ha) large spike length (10.52), number of grains spikelet-1 (2.98), Spikelet number spike-1 (11.54), followed by T4, T3 and T2. It was concluded that all treatments have ranked regarding their efficient effects as ((T5 (110 kg N ha-1> T4 (90 kg N ha-1> T3 (70 kg N ha-1> T2 (50 kg N ha_1> TControl) for all growth, yield and yield helping attributes such as plant height, number of grains spike-1, dry matter (kg ha-1), number of tillers plant-1, 1000-grain weight(g), grain yield (kg ha-1), spike length (cm), number of grains spikelet-1, number of spikelet spike-1, spike number m-2 and number of leaves plant_1. So, for obtaining aimed and desirable yield the application of (110 kg N ha-1) is recommended under research area conditions (Agro-Climatic Condition).

Performance and community acceptance of paddy management with balanced input cultivation technology in Kebonagung Village Madiun East Java Indonesia

By integrating balanced rice growing technology components, getting rice organoleptic tests from the rice produced, and learning about the community acceptability of the applied technology components, this study seeks to ascertain the growth response and NSV production of specific and site-specific rice. The study was carried out in rice paddies. five different types of technology bundles in a randomized group trial design. Each treatment unit and replication in the five iterations of the experiment used 0.3 ha. Acceptance in the community using a survey approach with fifty participants. The results indicated that the Inpari 42 and Inpari 45 seedlings developed the tallest plants between 77 and 81 days after planting. Inpari 32 had the most tillers, which was the same as Inpari 42 and Pamelen. Pamelen yielded the most productive tillers and the least amount of non-productive tillers. The largest plant height was measured 98–102 days following the Inpari 42 seedlings, while the highest number of tillers were found in Pamelen, Inpari 32, and Inpari 42. Inpari 42 has the widest flag leaf area. The most abundant grain component produced by Inpari 42 is the number of grains per panicle and the full grain per panicle. The highest production is produced by Inpari 32. The panelists' favored rice varieties were Inpari 32, Inpari 42, and Inpari 45 based on the rice's organoleptic test results (color, aroma, taste, and texture). Inpari 32, Inpari 45, and Inpari Nutrizinc rice had greater brightness. Inpari 45 is yellowish, and Pamelen is quite red. Pamelen and Inpari Nutrizinc are the same. The high adoption rate of 8766 % and the rapid diffusion of applied technology to nearby villages and other regions indicate that the community has a very positive attitude toward technology.

Modelling and optimization of urea super granule (USG) placement depth in paddy cultivation under check basin irrigation using HYDRUS-2D model

Urea, a nitrogenous fertilizer which plays an important role in enhancing yield, but has a drawback of low nitrogen use efficiency (NUE). Use of urea super granule (USG) and coated urea have advantages over prilled urea in terms of higher NUE and eventually improved yield. Depth of placement (DOP) of USG plays a major role in achieving higher NUE and yield. However, appropriate depth of placement needs detailed knowledge about water and nitrogen (N) movements to provide maximum nutrient to plants. Therefore, an experiment was conducted in the paddy field using USG coated with three different types of coating (USG with nano bentonite and neem oil (T1), USG with heated nano bentonite and neem oil (T2) and USG with sulfer and acacia gum solution (T3)) and placed at the centre of four hills of paddy as basal dose at ICAR-IARI, New Delhi. Spatial and temporal data of soil moisture and Nwere collected for the initial 32 days in paddy field after crops establishment. The HYDRUS-2D model was calibrated and validated using the observed data. Calibrated model was used for simulation of N movement in different soil types and for different depths of USG placement. Results revealed that permissible soil like sandy loam, the optimum DOP irrespective of coating was 5 cm. For sandy clay loam soil, optimum depth of placement was found to be 10 cm, 6 cm and 10 cm for T1, T2 and T3 type of coatings. Similarly, for clay loam soil, depth of USG placement for T1, T2 and T3 type coating was found to be 8 cm, 10 cm and 8 cm, respectively. Using the optimum DOP in sandy clay loam soil, results showed that both i.e., DOP and coating type has significant effect on number of tillers m−2 and yield (t ha−1). In 2020 and 2021, the highest number of tillers per square meter at 30 days after transplanting (DAT) was observed in the T3 treatment at DOP of 10 cm, with counts of 453.66 and 454.88, respectively. Following closely were T2 at DOP of 10 cm (447.33 and 119.55) and T1 at DOP of 6 cm (443.44 and 444.77). Similarly, the best yield in 2020 and 2021 were observed from T3 treatment at DOP of 10 cm (5.41 t/ha and 5.44 t/ha), followed by T2 at DOP of 10 cm (5.33 t/ha and 5.42 t/ha), and T1 at DOP of 6 cm (5.29 t/ha and 5.31 t/ha). This study may assist the farmers, researchers, manufacturers and policy makers to make selection of the optimum depth of placement for higher NUE and yield in different soil types.

Performance of Convergent Breeding Wheat (Triticum aestivum L.) Lines in the Lowlands

The development of tropical wheat in Indonesia is currently confined to the availability of wheat’s optimal environments in the highlands. Wheat competes with major highland crops, such as vegetables, which also have high economic values. Despite this, the demand for wheat in Indonesia remains high, whether in the form of wheat flour, wheat meal, or oats. Wheat breeders are actively working to create various crossbreeds so that wheat can adapt and perform effectively in lowland areas. The convergent breeding method is one of the strategies employed to produce genotypes with superior performance. Convergent breeding enhances genetic diversity by incorporating superior traits from all parent plants. The breeding results expedite the emergence of genetic combinations between selected parents. This method involves combining several parent varieties with various traits, with the hope that their offspring will inherit all the characteristics of the crossed parents. Our study with wheat convergent breeding has reached the F6 generation, and in this current study we evaluated the performance of each observed trait in different environments, with the goal of determining the levels of homogeneity and homozygosity. The study utilized a randomized complete block design with three replications, and the crops were planted in various locations. The planting locations selected were those that are >1000 m above sea level (asl), and at a lowland of ± 250 m asl. Wheat performance based on stomatal characteristics showed a reduction in the lowland, which indicates a response to climatic conditions in a particular environment. The higher the environmental temperatures, the smaller the stomatal size, which reduces plant water loss. Noteworthy findings include the tallest plant in CBF-6. CAMN23(265), the highest number of tillers in CBF-6. CAMN233 and CBF-6.CAMN8(4), the largest flag leaf area in CBF-7.CAMN60, and the highest 100-seed weight, as well as overall yield in CBF-7.CAMN119. An analysis of the lowland sensitivity index identified ten moderate genotypes that could potentially adapt well and achieve optimal yields.

Effect of salinity stress on morphological characters of Bajra napier hybrid grass [Pennisetum glaucum (L.) R. Br.]x [Pennisetum purpureum (K.) Schm] varieties

Salinity is a significant constraint in expressing thecrop’s full potential. Bajra Napier Hybrid grass is a highyielding,good-quality fodder grass with palatability grown across different climatic zones of India. A field experiment wasconducted at the Indian Grassland and Fodder Research Institute, Dharwad, during 2020-21 to evaluate the effect of salinitystress tolerance in seven established BN Hybrid genotypes,viz.,DHN 6, DHN 15, COBN 5, CO 6, BNH 10, IGFRI 7andPHULE YASHWANT at 0 and 12 ECe. The morphological characters like plant height, the number of tillers, the numberof green leaves per tiller, regeneration index, and total fresh weight were recorded in these seven genotypes under salinityand control conditions. The maximum height was observed in Phule Yashwant, whereas the minimum height was recordedin genotype DHN 6. BNH 10 recorded the highest regeneration index. The highest total fresh biomass was recorded in thePhule Yashwant genotype, irrespective of salinity levels. This study revealedthat Phule Yashwant displayed the highestfresh biomass among all the genotypes, and the biomass of BNH 10 was on par.Whereas CO 6 and DHN 6 were the poorperformers. Higher tiller number, regeneration index, and low leaf-to-stem ratio were the strategies adopted by the tolerantvarieties under higher salt levels.

Genetic Diversity Studies in Durum Wheat (Triticum durum L.) Accessions

Genetic diversity among durum wheat tetraploid species has a premium to understand the diversity within the genotypes. This study’s major objective was to learn more about the diversity and relationships between various durum genotypes. The experiment was design randomized complete block design with three replications. In this study, a total of eight durum advance lines, namely DW-1, DW-2, DW-3, DW-4, DW-5, DW-6, DW-7, and DW-8, were included with one Durum check wheat Miki3 and spring wheat Khirman to investigate the interrelationship and genetic diversity of quantitative traits and they ‘reaming these traits. For nearly all of the features, the analysis of variance revealed considerable variations among the durum advance lines, as evidenced by the significant mean squares at a probability level of P≤0.01. The mean performance results indicated variations in genotype performance DW8 exhibited maximum days to heading, tallest plant height (cm), and shortest peduncle length was measured in durum wheat. DW6 attained shorter plant height was recorded as compared to both check varieties. A notable variation was detected among the genotypes concerning the trait "number of tillers per m2". The genotype with the highest number of tillers appeared to be spring wheat and the minimum number of tillers was recorded in DW4, respectively. Significantly maximum number of spikelet’s, per spike-1,biological yield plant-1 and protein content % were observed in DW3, amount of grains spike-1 were significant in DW6, main spike yield per plant (g) was recorded in DW3. Whereas minimum grains spike-1and minimum spike yield was observed in DW9, respectively. Grain yield plot-1 (2.3333 kg) was observed significantly higher in DW6 and minimum Grain yield plot-1 (1.6667 kg) in DW10 was observed. Regards correlation, Grain yield plant-1 revealed there was a positive and significant correlation with respect to the trait "days to75% headline, days to 75% maturity, grains Spike-1, main spike yield-1 and 1000-Grain Weight (g) (r=0.500**, r=0.679**, r=0.316*, r=0.316*, r=0.533** and r=0.308*). Using UPGMA, two members of cluster 1 and cluster 2 were found to have closer relationship with different durum genotypes. However, miki 3 had closer relation with DW-8. The largest positive PCA loadings were observed in grains yield plant-1 and 1000 grains weight for the second, third, fourth and fifth PCA group. Hence, DW-8 was nearer relation with miki3, and DW-3, DW-10 and DW-6 considered the best genotypes according to performance.

Effect of different planting methods on growth and yield of paddy variety Bg 360

Rice is the staple food in Sri Lanka. Bg 360 is currently considered the best improved paddy variety cultivated by farmers in Mannar. In the Mannar district, farmers practice different planting methods, and the number of effective tillers obtained varies, which causes yield variation and different production costs in paddy cultivation. To identify the best-suited planting method for the rice variety Bg 360, an experiment was carried out in a randomized complete block design with three replications by adopting five different methods of planting as treatments, namely broadcasting (T1), drum row seeding (T2), SRI method of planting (T3), manual transplanting (T4), and machine transplanting (T5). The parameters such as plant height, leaf area index, tillers, number of grains, panicle numbers and yield per plot were measured. Data were analyzed in the SAS 9.4 version, and mean separation was performed in DMRT to identify the best treatment. The experiment results showed that the planting methods significantly affect the plant height, effective tillers and grain yield. A high number of effective tillers (between 6 – 20 per plant) and yield (number of grains per panicle, 1000 grain weight and number of panicles per plant) were observed in the SRI method, and low value was received from the broadcasting method. The planting methods also significantly affected the time of crop maturity (by two weeks). Direct-seeded rice matured early (110 days), while transplanting took 120 days. Further, transplanted rice, especially in the SRI method, showed low seed requirement, low weeds, pest disease and incidence and low cost of production. Farmers generally do not adopt the SRI method for cultivation because of high time consumption and labour requirements. Based on the study, it can be concluded that transplanted rice, especially the SRI method, is more beneficial than other planting methods to cultivate the Bg 360 paddy variety.

Growth and response of several shallot varieties to its important diseases in Lembang highlands

Disease attacks on shallots (Allium cepa L. var. aggregatum) are one of the main constraints on increasing shallot production. Important diseases that often appear in shallots are purple blotch disease (Alternaria porri), leaf blight (Stemphylium vesicarium), and downy mildew (Peronospora destructor). The diversity of existing varieties is wealth as a substitution for seed sources. The aim of this study was to determine the growth and disease resistance of several shallot varieties grown in Lembang highlands. The research was conducted at the Margahayu Experiment Field of the Indonesian Vegetable Research Institute Lembang, from March to July 2021. The Randomized Block Design (RBD) was used in this study with a treatment consisting of 11 varieties of shallots (Violetta 1 Agrihorti, Violetta 2 Agrihorti, Violetta 3 Agrihorti, Ambassador 1 Agrihorti, Ambassador 2 Agrihorti, Ambassador 3 Agrihorti, Ambassador 4 Agrihorti, Maja Cipanas, Pancasona, Kramat 1, and Sembrani), with 3 replications. The results showed that the growth performance varied between varieties. The Violetta 3 Agrihorti was the highest for plant height, the highest number of tillers was in the Pancasona, and the highest number of leaves was in the Ambassador 3 Agrihorti. Among the eleven shallot varieties tested at high altitudes, none were resistant to the diseases of Alternaria porri, Stemphylium vesicarium, and Peronospora destructor, except for the Pancasona variety which was classified as tolerant (resistance category included in the susceptible category, but has high yield). Meanwhile, for disease resistance, the Violetta 1 Agrihorti is relatively resistant to purple blotch disease, leaf blight, and downy mildew.

Evaluation of the Productive Traits of Genotypes of Barley (Hordeum vulgare L.) by the Effect of Seeding Rate

A field experiment was carried out in the Tikrit Research Department - Agricultural Research Department - Ministry of Agriculture in the season 2021-2022 in order to know the effect of four seed rates (100, 120, 140 and 160 kg h-1) with fifteen genotypes of barley (Ibaa99, Alhadar, Alkheer, Alwarkaa, Buraq, Amal, Shuaa, Rehan, Samir, Arevate, Acsad 1811, Acsad 1816, Acsad 1818, Acsad 1827, Acsad 1840). The experiment was applied according to the randomized complete block design (RCBD) with a split plot system, as the (S) occupied the main plots and the (G) occupied the secondary plots, with three replications,. The results showed that the seed rate (120 kg h-1) differed significantly from the other seed rates, thus achieving the best averages for the number of seeds of spike-1, weight of 1000 grains, grain yield, harvest index, and grain protein content, and achieved the seed rate 100 kg h-1 in giving the lowest lodging. The performance of the genotypes was significant, The cultivar Arevate also gave the highest average plant height, No. of tillers m-2, No. of spikes m-2, biological yield, The genotype Acsad 1840 gave the lowest index of lodging and the highest grain yield. The interaction between (G*S) achieved significant differences, It gave the seed rate 100 kg h-1 with the Acsad 1840 less lodging and with the Acsad 1816 had the highest number of tillers m-2 and with the Acsad 1811 the highest weight of 1000 seeds, The seed rate 120 kg h-1 with Alwarkaa cultivar achieved the highest number of grains in the spike, and with the combination Acsad 1816 the highest yield of grains, and with the genotype Acsad 1811 the highest percentage of protein in the seeds.

Evaluation of Bio Dynamic Compost and Bio Dynamic Compost Wash on Growth and Yield of Rice

The present investigation, was conducted in the Kharif of 2021–2022 at the Student's Instructional Farm at the A.N.D. University of Agriculture & Technology, Kumarganj, Ayodhya (U.P.). The experiment was laid out in Randomized Block Design, replicated thrice, having 8 treatments i.e. T1 (Absolute Control), T2 (Bio dynamic compost 1q/ha + 50 % RDF), T3 (Bio dynamic compost 2 q/ha + 50 % RDF), T4 (T2 + Root dipping with Bio dynamic compost wash 10 ml/ lit of water), T5 (T3 + Root dipping with Bio dynamic wash 10 ml/lit of water), T6 (T2 + foliar application of Bio dynamic compost wash of 10 ml/10 lit of water), T7 (T3 +foliar application of Bio dynamic compost wash of 10 ml/ lit of water), T8 (100 % RDF. Result revealed that the highest growth attributes viz., Plant height (cm), maximum dry matter accumulation, highest number of tiller (m-2), Panicle length (cm), number of grain per panicle and test weight (gm), maximum grain yield (q ha-1), highest straw yield, maximum biological yield (q ha-1) and maximum harvest index (q ha-1) was recorded significantly over rest of the treatments in T7 (T3 +foliar application of Bio dynamic compost wash of 10 ml/ lit of water) while it recorded lowest in in T1 (absolute control) during the investigation.

Physiological and Agronomic Characteristics of Alternative Black Barley Genotypes (Hordeum vulgare var. nigricans and H. v. var. rimpaui) under Different Hydrothermal Conditions of the Growing Seasons

Black-seeded barley can be a valuable raw material for functional food. However, its restoration to cropping should be preceded by the identification of the characteristics determining productivity. The field study was conducted to identify specific parameters of the black-seeded barley genotypes (Hordeum vulgare var. nigricans and H. v. var. rimpaui) and compare them with common barley (H. vulgare) under the different hydrothermal conditions of the two growing seasons of 2021 and 2022. Our research has shown that each genotype has a set of specific characteristics that best describe it at a given developmental stage. H. v. rimpaui was well characterized by chlorophyll fluorescence parameters such as FV/FM, FV/F0, and PIABS at the seedling stage and H. v. nigricans by FV/FM and FV/F0 at the flag leaf stage. Moreover, H. v. var. rimpaui was distinguished by a high biomass of shoot (726 g m−2) and straw yield (5.04 t ha−1) but H. v. var. nigricans by a high number of sterile generative tillers (103 m−2 in the dry year 2022). Further research should focus on the response of black-seeded barley genotypes to abiotic stresses, while in agronomic practice, efforts should be made to increase the number of grains per ear and 1000-grain weight.

Blast Disease Behavior in Some Boro Rice Varieties of Bangladesh and Development of Induced Resistance System Against Blast Disease through Selected Novel Chemicals

Chronologically two experiments have been conducted during the period from October 2018 to May 2019 and July 2019 to June 2020 at Sher-e-Bangla Agricultural University, Bangladesh for the identification of one of the best rice varieties and chemicals against blast disease. In a field experiment, eight boro rice varieties were evaluated (five inbreed varieties, two high-yielding varieties, and one wild variety) to observe varietal performances against blast disease. A pot experiment was also performed to study the resistance behavior of the tested varieties in an in-vitro condition by applying silica powder, K2SiO3, salicylic acid, cattle urine (both normal and pregnant cows), and PPN. Field study revealed that the wild variety was highly resistant (incidence and severity 0%) whereas BRRI dhan58 was susceptible (incidence 21.48% and severity 60.48%). Wild variety was also characterized by the highest tiller number (20.73), panicle length (24.90 cm), fresh grain weight (62.30 g), and dry grain weight (51.70 g). The highest number of panicles was recorded in BRRI dhan28 (18.40) which was statistically like the wild variety (17.50). Though wild variety performed best in another parameter it gave the lowest amount of yield (4.77 kg/plot). In morphological studies of pathogen, pyriform-shaped conidia were found in a sympodial fashion on conidiophores whose size varied from 22.13 to 28.47 μm × 9.13 to 11.72 μm (average 25.30×10.43 μm). The second experiment revealed that all selected novel chemicals showed some extent of resistance but the cattle urine, PPN, and K2SiO3 showed a promising effect. Koch’s postulate test for the experiment confirmed the causal organism of blast disease is Magnaporthe oryzaein artificially inoculated plants.

Acidity and nutrient management practices for enhancing soil nutrient availability, nutrient uptake and grain yield of rice in Vaikom kari soils in Kuttanad, Kerala

A field investigation was conducted during August to December 2015 and 2016 in farmers` fields in Thalayazham panchayat in Kottayam district. The experiment was laid out in randomized block design having 16 treatments in three replications with rice (Oryza sativa L.) var. Uma. The treatments were dolomite, lime + MgSO4 or RHA (rice husk ash) + MgSO4 along with 100% package of practice (POP) alone or with 100% POP + foliar spray of 13-0-45 N-P-K (KNO3) (1%) or borax (0.5%) or 13-0-45 + borax at PI (panicle initiation) stage. Lime + MgSO4 + 75% POP + 13-0-45 + borax as well as lime without MgSO4 + 100% POP combined with 13-0-45 or borax or both were also included as treatments. Higher grain yield of 5.42 and 5.57 t ha-1 during 2015 and 2016 respectively were produced by dolomite + POP + 13-0-45 followed by dolomite + POP + 13-0-45 + borax and lime + POP + MgSO4 + 13-0-45. The treatments involving dolomite and lime with or without MgSO4 produced taller plants, higher tiller number m-2 and higher Leaf Area Index during both the years. Dolomite + POP + 13-0-45 produced the highest number of panicles m-2. Higher test weight and lower percentage of unfilled grains were observed with dolomite + POP + 13-0-45 and dolomite + POP + 13-0-45 + borax. Lime and dolomite treatments were more effective in reducing soil acidity and improving dehydrogenase activity and nutrient availability in the soil than RHA treatments during both the years. However, the effect of liming materials applied as basal and at 30 DAS diminishes after the crop and this necessitates application of liming materials in every crop season. Availability of soil N improved by treatments involving lime + POP without MgSO4 at PI and harvest stages. The treatments involving dolomite + POP and lime + POP with or without MgSO4 recorded higher available P during PI stage. In general, higher status of available K was registered by the treatments involving dolomite or lime application and lower K status registered by the treatment with 75% POP fertilizer. All treatments involving lime or dolomite registered higher soil available Ca and those involving dolomite or lime + MgSO4 showed higher availability of Mg in the soil. The treatments involving dolomite registered lower status of soil available Fe and higher status of available B. Higher status of available Zn was registered by the treatments involving dolomite or lime + MgSO4. Soil pH was significantly and positively correlated with available P, Ca and Mg and significantly and negatively correlated with available Fe in the soil. In general, higher uptake of macronutrients was observed with dolomite or lime + MgSO4 treatments along with 100% POP during both the years. Foliar spray of 13-0-45 recorded higher N and K uptake. Significant and positive correlation of grain yield with uptake of macro nutrients was also observed.

Response of Yield and Agronomic Output of Bangabandhu dhan100 under Varying Sowing Window in Cold Prone Rangpur Region

Background: Selection of a suitable planting time is one of the key factors for obtaining a desirable rice grain yield. This study focuses on the effect of planting date on the key agronomic traits and provides useful information on optimal planting window to maximize grain yield of Bangabandhu dhan100 in the cold-prone Rangpur region, Bangladesh. Methods: The study was conducted at the Rangpur regional station farm of the Bangladesh Rice Research Institute from October 2021 to June 2022. The selected cultivar was seeded on eight different dates at a 15-day interval, starting on October 16. Time series data on agronomic parameters including seedling biomass, leaf number of seedlings and tiller number per plant were collected at a 15-day interval. Result: A good relationship was found between accumulated GDD (growing degree days) and the associated leaf number per plant and the highest leaf number was observed with early seeding. Similarly, seedling biomass yield depended on accumulated GDD and it was found to be higher at early seeding than late seeding. The tillering pattern of Bangabandhu dhan100 was influenced by planting dates and reached its peak at 60 days after planting for all seeding dates. The highest tiller number (368/plants) was found when the cultivar was seeded on December 1. Total biomass showed an increasing trend after planting and reached its maximum of 13.9 t/ha with December 1 seeding. Planting time significantly influenced the grain yields and the highest yields were observed during seeding between 1 and 16 December; yields gradually decreased with the advancement of seeding dates. This finding provided a good idea for the selection of an optimal planting time for Bangabandhu dhan100 to maximize grain in the Rangpur region, Bangladesh.