Asian Journal of Soil Science and Plant Nutrition
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Evaluation of Bitter Gourd Genotypes for Pest and Diseases Incidence Under Natural Condition
No full textBitter goourd or bitter melon botanically Momordica charantia L. is susceptible to many pest and diseases are now days challenge in its cultivation. So in the present study elucidate the incidence of pest (Fruit fly) and disease (mildews) of bitter gourd. The experiment was conducted under northern dry zone of Karnataka. Fifty six bitter gourd genotypes was under study but none of them shows resistance but the severity various with genotypes. Genotypes exhibit powdery mildew incidence from moderately susceptible (20.89%) to highly susceptible (66.67%) and downy mildew. Genotype ABG-DG-T-1 showed lower infestation for fruit fly (12.90%) and downy mildew (32.00%) among all the genotypes under study
Genetic Variability Studies in Yellow Seeded Linseed
No full textThe experimental materials consisted of 40 yellow seeded genotypes of linseed taken from “AICRP on linseed, Department of Genetics and Plant Breeding, IGKV, Raipur”, Chhattisgarh, India along with one check variety Surabhi. Seed yield is an important trait and the cumulative result of a number of component traits controlled by polygenes and influenced greatly by the environmental factors. Hence, yield alone would not be effective for selection of superior genotypes. In order to make the selection effective one has to give emphasis on the yield attributing traits. According to analysis of variance, “significant differences exist for all the parameters investigated from yellow seeded linseed genotypes.” It demonstrates that the yellow seeded genotypes of linseed have sufficient variability in seed yield and contributing characteristics. 1000 Seed weight (7.7g) and seed yield (15g) were the highest in the YLS-31 and YLS-23 genotypes, respectively. The highest GCV was found in number of secondary branches per plant (39.5%) followed by seed yield (32.1%), harvest index (21.6%), and number of primary branches per plant (24.3%). The highest PCV was found in the number of primary branches per plant (47%). Number of secondary branches per plant (43.2%), 1000 seed weight (37.9%), number of capsules per plant (33.9%) and harvest index (22.8%) were the next most important factor
Maximizing Mustard Crop Yield: Unveiling the Impact of Organic and Inorganic Fertilizers on Brassica juncea L. var. M-27
No full textA field experiment was carried out during the rabi season 2021- 2022 at Himalayan University, Itanagar, Arunchal Pradesh to assess the effect of organic and inorganic fertilizers on the yield of Mustard var.M-27. Yield attributing characters like fresh weight of silique, dry weight, number of silique per plot, length of silique per plant, and seed yield of mustard were found maximum in the application of vermicompost (T2 ) with a dose of 100% vermicompost. From the results of the present study, it can be concluded that the application of vermicompost could be the best source of mustard as compared to other sources for enhancing the yield of mustard
Effect of Nitrogen Management Strategies on Yield, Quality and Nitrogen Uptake by Wheat (Triticum aestivum L.)
No full textThere is little knowledge among farmers on the rate of nitrogen-fertilizer application. Therefore, there is a need to determine optimal rate of nitrogen-fertilizer application on growth and yield of wheat. Accordingly, an field experiment was conducted during the winter (Rabi) season at Crop Research Centre the Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, to study the impact of different nitrogen level and splitting modules on quality, yield and nitrogen uptake by wheat (Triticum aestivum L.) crop. The main object of investigation was to find out the optimum dose and splitting of nitrogen for wheat in irrigated system under integrated nitrogen management approach. The experiment consisting of four nitrogen levels viz. control i.e. 0 kg N ha-1 , 90 kg N ha-1, i.e 120 kg N ha-1 and 150 kg N ha-1 as main plots and four splitting modules M1- 50% N as basal through VC, + 25% at CRI + 25% booting stage through urea, M2-50 % N as basal through FYM + 25% at tillering + 25% at booting stage through urea, M3 -50% N as basal through VC+FYM (1:1), + 25% at tillering + 20% at booting stage and 5 % N as foliar spray at pre flowering stage through urea, M4 -50% N as basal through VC+FYM (1:1), rest based on SPAD reading through urea as sub-plots. The experimental results revealed that the plot which fertilized with 150 kg N ha-1 gave higher yield-attributing characters and yield (grain, straw and biological yield). The application of 150 kg N ha-1 resulted in 0.44, 15.25 and 80.8 per cent during 2016-17 and 0.41, 13.05 and 79.2 per cent during 2017-18 produced the higher grain yield over 120, 90 and 0 kg N ha-1. The content and uptake of nitrogen by grain, straw and total uptake as well as protein content and protein yield were obtained with 150 Kg N ha-1 but differences between 120 and 150 kg N ha-1 were non-significant, during both the year 2016-17 and 2017-18. Among different splitting modules M3 resulted significantly higher entire yield attributes, yield (grain and straw yield), nitrogen content and uptake by grain, straw and total uptake as well as content and yield of protein. The M3 module produced higher grain yield by 7.9, 14.7 and 24.8 per cent during 2016-17 and 8.1, 14.89 and 25.2 per cent during 2017-18 over M4, M1 and M2 splitting modules, respectively
Assessment of Genetic Variability and Character Associations in Sunflower (Helianthus annuus L.) Yield Related Traits
No full textAims: To investigate yield and yield related characteristics for variability and association studies in fifty-two powdery mildew differentials of sunflower.
Study Design: Augmented block design.
Place and Duration of Study: Main agricultural Research station, University of Agricultural Science, Raichur, Karnataka between November 2022 and February 2023.
Methodology: Study included 52 powdery mildew differentials of sunflower studied factors such as genetic variability, heritability, and genetic advance in characters such as head diameter, seed filling percent, test weight, number of seeds per head, volume weight, oil content and seed yield. Correlation and path analysis was also done.
Results: Findings revealed significant differences among the traits, especially in seed yield per plant, head diameter, seed filling percent, test weight, and number of seeds per head which conclude that there is variability present in the studied character and there is scope for crop improvement. Correlation coefficients showed positive connections between seed yield per plant and traits like head diameter, test weight, seed filling percentage, and number of seeds per head. However, volume weight had a negative correlation. Path coefficient analysis helped us understand the direct and indirect impacts of these traits on seed yield per plant. Head diameter, seed filling percentage, test weight, and number of seeds per head had positive direct effects on seed yield per plant. In contrast, volume weight had a negative direct effect.
Conclusion: The study contributes to the understanding of the genetic architecture of sunflower traits related to yield and provides a foundation for developing targeted breeding strategies. These insights can guide sunflower breeding programs in selecting traits for improved yield
Optimization of Urea Super Granule Boost up for the Efficiency of N and Improved the Potato Quality, Growth and Yield
No full textPotato is the third most important food crop after wheat and rice in Bangladesh. To determine the suitable nitrogen source by observing the growth performance with a view to increasing the yield of potato, a research work was carried out at the Research Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from November 2018 to March, 2019. The experiment consisted of eight treatments. The experiment was laid out with Randomized Complete Block Design with three replications. Experimental results showed that nitrogen sources had significant effect on plant height, number of effective stem hill-1, wt. of tuber (g hill-1), yield of tubers (kg plot-1), yield of tubers (t ha-1), tuber fleshy dry matter content, specific gravity, grading of tubers (% by number). Potato production increased significantly due to the application of Urea Super Granule (USG). The highest production was observed in T3 treatment. The application of T3 treatment showed the highest wt. of tuber hill-1 (57.53g hill-1), highest tuber yield (25.77 kg plot-1), highest tuber yield (29.45 t ha-1) than any other sources of nitrogen treatments. The mean apparent recovery of Nitrogen by tested variety BARI Alu 7 (Diamant) was obtained with the application of USG in other treatment (except control) but the nitrogen use efficiency was highest in T3 treatment. Findings revealed that application of USG showed the superiority over other sources of nitrogen to produce highest tuber yield of potato and for all cases lowest results were found in T1 treatment receiving no fertilizer (control)
Studying the Efficacy of Some Organic Compounds as a Source of Potassium Fertilization and their Effect on the Wheat-Peanut Crop System in Sandy Soil
No full textTo encourage sustainable agriculture and increase net revenue for the agricultural community, the use of expensive chemical fertilizers should be reduced and replaced with locally produced organic byproducts. For this reason, a field experiment was conducted on sand soil at Ismailia Agric. Res. Station in Ismailia Governorate, Egypt, to evaluate the impact of various organic K rates 0, 50%, 75%, and 100% from the recommended plant dose) and three different K organic sources i.e., seaweed (SWE), yeast sludge (YS), and filter mud cake (FMC), in two successive seasons of wheat (Triticum sativac. v. Giza 168) as a winter crop and peanut (Arachis hypogaeac. v. Giza 6) as a summer crop season; to study how responsive they are to different potassium rates and sources applied to crop productivity. After both crops were harvested, the chemical features of the soil were also assessed. The current findings state that the use of varied organic K rates and sources boosted the yield components of wheat and peanut crops, as well as the nutritional total content in straw, grains, or seed of both wheat and peanut, as compared to the control treatment. Furthermore, the application of all treatments improved pH, EC, OM, and cation exchangeable capacity (CEC); the availability of P, K, and soluble K followed a similar pattern after the wheat-peanut crop was harvested. Furthermore, the highest increases resulted from 75% of the recommended K dose, and the best organic sources of K were YS and SWE for wheat and peanut, respectively. In conclusion, the use of tested organic potassium sources is a good alternative to mineral potassium fertilizers, is economical, which is reflected in crop yield, and is environmentally friendly
Genetic Variability Analysis for Yield and Its Attributing Traits in Rice (Oryza Sativa L.) under Phosphorus-sufficient and Deficient Field Conditions
No full textAim: The present study aims to identify phosphorus deficiency tolerant rice genotypes under both phosphorus-sufficient and deficient conditions.
Materials and Methods: Two kinds of fields (high and low phosphorus content) were selected based on their soil phosphorus availability. Hundred diverse rice germplasm was collected and planted in an augmented design along with four local checks namely, Swarna sub-1, MTU 1153, MTU 7029 and Uttar Sona. The data was recorded for 14 traits and subjected to different types of variability analysis.
Place and Season of Study: The experiment took place at instructional Farm of Uttar Banga Krishi Vishwavidyalaya, Cooch Behar, West Bengal, India during the Kharif season of 2021.
Results: The variability analysis revealed that phosphorus uptake showed a high genotypic coefficient of variation (GCV) under phosphorus-deficient condition and high phenotypic coefficient of variation (PCV) under both conditions. Grain yield showed high GCV and PCV under both the phosphorus conditions. Heritability was moderate whereas high Genetic advance as percentage of mean was observed under both the conditions for both phosphorus uptake and grain yield. Strong positive correlations were observed between days to flowering and various yield-related traits under both the conditions. Positive correlation was observed between phosphorus uptake and grain yield under phosphorus-sufficient condition, but a weaker correlation under phosphorus-deficient condition
Application and Management of Nitrogenous Fertilizer in Rice Field: A Review
No full textRice (Oryza sativa L.) is one of the most significant cereal in the world. Globally, the top rice producing country is China, while India is the world’s second largest producer and the largest exporter of rice in the world. It covers one-third of the total cultivated area in India as it is one of the major staple food crops. The application of nitrogenous fertilizer in crop production system is an important aspect of modern crop management practices and one of the determining factors to increase crop yield and thereby keeping pace with the expanding human population. Rice production can be increased by the application of nitrogenous fertilizer whether organic or inorganic at an appropriate time and place. The fertilizer should be applied in multiple split doses depending on the soil’s nutritional status, crop demand and the sources of nutrients. However, most of the nitrogenous fertilizer applied to rice fields is not taken up by rice plants but instead lost to the environment as ammonia, nitrate and nitrous oxide. The ‘reactive N’ also known as fixed N has a negative impact on human health as well as causes serious environmental problems. Surface runoff, denitrification, ammonium volatilization and leaching should all be managed in order to reduce the nitrogen loss from rice fields. Sustainable and environmentally friendly fertilizer management techniques raise the crop yields and enhance the sustainable soil fertility status. So it is necessary to implement management practices in order to reduce nitrogen losses and increase the nitrogen use efficiency (NUE) in rice production
Effect of Foliar Nutrition on Growth and Yield of Pigeonpea [Cajanus cajan. (L.) Mill sp.]
No full textPigeonpea is most important rainfed pulse crop of Karnataka. Yield of pigeonpea is fluctuating due to variation in climate causing flower drop and poor pod set. The field experiment was conducted to study growth and yield of pigeonpea as influenced by foliar nutrition. The experiment consisted of foliar application of two types of nutrients (19:19:19 and Pulse magic), two growth promoters (NAA, and N - Triacontanol) and their combinations at flowering and pod formation stages. The growth and yield attributes varied significantly and RDF + foliar application of 1% pulse magic at flowering and pod formation stage recorded significantly higher plant height (144.6 cm), number of branches (16.8 plant‑1), leaf area (3218 cm2 plant-1), total dry matter accumulation (135.5 g plant-1), absolute growth rate (0.812 g plant-1 day-1,), crop growth rate (5.19 g m-2 day-1) and relative growth rate (0.01 g g-1 day-1) as compared to control (122.2 cm, 12.9, 2421 cm2 plant-1, 89.4 g plant-1, 0.633 g plant-1 day-1, 4.24 g m-2 day-1 and 0.007 g g-1 day-1, respectively) at harvest. Higher seed yield (1590 kg ha-1), stalk yield (4308 kg ha-1) and harvest index (0.26) recorded with the application of RDF + foliar application of 1% pulse magic at flowering and pod formation stage and lower seed yield, stalk yield and harvest index (1104 kg ha-1, 3416 kg ha-1 and 0.23, respectively) was recorded with control treatment