scholarly journals Effects of Nitrogen Application on the Growth and Yield of Quinoa under Saline Conditions in Northern Vietnam

2021 ◽  
Vol 4 (1) ◽  
pp. 903-911
Author(s):  
Dinh Thai Hoang ◽  
Dang Thi Phuong Anh ◽  
Luu Hue Nhan ◽  
Nguyen Viet Long

This study aimed to determine the optimum nitrogen application rate for quinoa in saline soils. Two experiments were conducted: (i) the first experiment was under artificial saline conditions with the two factors of saline regime (stressed and non-stressed) and nitrogen application level (0, 30, 60, 90 and 150 kg N ha-1) in net-houses located in Gia Lam, Hanoi; and (ii) the second experiment was under natural field saline conditions with the two factors of quinoa cultivar (Atlas and Moradas) and nitrogen application level (0, 30, 60, 90, and 150 kg N ha-1) in the coastal areas of Hai Hau, Nam Dinh province. Data were collected for growth duration, insect and disease infestations during the growth period, and various growth parameters and yield components at harvest. The results showed that saline stress reduced the growth and yield parameters, but did not affect the quinoa growth duration of the investigated quinoa cultivars. In both experiments, the growth parameters and yield components increased according to the increase of the nitrogen application rates from 0 to 90 kg N ha-1, then decreased when the nitrogen rates were higher. The results suggested that 90 kg N ha-1 was the optimum nitrogen application dose for quinoa growth and development under saline soil conditions.

Author(s):  
Mahugnon Socrate Agonvinon ◽  
Alladassi Felix Kouelo ◽  
Tobi Moriaque Akplo ◽  
Julien Avakoudjo ◽  
Pascal Houngnandan ◽  
...  

Aims: Crop production is exposed to climate change phenomenon resulting in change in rainfall amount and long drought spells. Good conservation practices are important in yield improvement. This study aims to assess the effect of tillage and vegetative mulch on maize growth rate, yield and harvest index in ferralitic soil of southern Benin. Study Design: The complete randomized block design (CRBD) with 4 repetitions was implemented. Place and Duration of Study: The experimental site is located at Allada, in southern Benin, and conducted between May 2017 and July 2017. Methodology: During this study, two factors were tested (Tillage and mulch) and 6 treatments have been obtained of combination of two factors level (No-tillage, tillage and 0%, 50%, 75% mulch). The growth parameters, yield parameters and harvest index were determined. Results: The results indicated that tillage and mulching significantly influenced the growth rate, leaf surface and leaf number of maize plants. Tillage increased to 54% the grain yield compared to no tillage whereas 50% and 75% mulch promoted the highest grain yield. Considering the combination of tillage and mulching, LM50 (Tillage + 50% mulch) and LM75 (Tillage + 75% mulch) treatments resulted in about 85% increase of grain yield compared to direct seeding without mulch. Conclusion: These results reflect the importance of soil cover in improving of maize productivity.


2020 ◽  
Vol 57 (4) ◽  
pp. 302-309
Author(s):  
Sukanta Pal ◽  
Megha Sana ◽  
Hirak Banerjee ◽  
Lhingneikim Lhungdim

Effect of nitrogen and bio-fertilizer on growth and productivity of hybrid rice (cv. PHB 71) was assessed during dry seasons of 2017 and 2018 at Research Farm of BCKV under new alluvial zone of West Bengal. The experiment was laid out in factorial randomized block design with 12 treatment combinations having 4 levels of N and 3 types of bio-fertilizer replicated thrice. Application at 180 kg N/ha produced tallest plants at 90 DAT with maximum LAI (60 DAT), DMA (90 DAT), tillers/hill (90 DAT) and CGR (30-60 & 60-90 DAT). The same N rate resulted in highest panicles/m2, panicle length, panicle weight, filled grains/panicle and 1000-grain weight. A decrease in N dose from 180 to 150 kg/ha caused reduction in all those yield components; however, the variation was non-significant except for number of panicles/m2. Maximum grain yield, straw yield and harvest index was also achieved with 180 kg N/ha accounting 120.1, 34.9 and 32.8% more than the values obtained with zero-N; however, it was statistically at par with the yields and HI obtained with 150 kg N/ha. The Azospirillum application increased all the growth parameters, yield components and yield of hybrid rice over other tested bio-fertilizers (Azospirillum > PSB > K mobilizer), accounting 5.9 and 8.8% more than the yields obtained with PSB and K mobilizer. The interaction of N and bio-fertilizer exerted significant effect on growth attributes but failed to record any significant variations in yield components and yield of hybrid rice. The maximum economic benefit was achieved with combined application of 180 kg N/ha and Azospirillum.


2020 ◽  
Vol 30 (1) ◽  
pp. 65
Author(s):  
Wiwin Setiawati ◽  
Ahsol Hasyim ◽  
Bagus Kukuh Udiarto ◽  
Abdi Hudayya

<p>Penggunaan pupuk hayati dan unsur hara makro sekunder seperti magnesium (Mg) dan hara mikro boron (B) diketahui dapat meningkatkan pertumbuhan, kualitas hasil tanaman, meningkatkan unsur hara dalam tanah serta mampu meningkatkan ketahanan tanaman terhadap serangan hama dan penyakit. Selain itu penggunaan pupuk tersebut dapat mengurangi kebutuhan terhadap pupuk kimia sintetis. Tujuan penelitian adalah mengetahui pengaruh aplikasi Mg, B, dan kombinasinya dengan pupuk hayati terhadap pertumbuhan dan hasil panen serta penekanan serangan hama dan penyakit. Penelitian dilakukan di Kebun Percobaan Balai Penelitian Tanaman Sayuran, Lembang, Jawa Barat (1.250 m dpl.) dari bulan Juni 2018 sampai bulan Februari 2019. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok terdiri atas delapan perlakuan dan empat ulangan. Perlakuan yang diuji adalah aplikasi Mg, B, dan kombinasi dengan pupuk hayati serta teknologi konvensional sebagai pembanding. Pengamatan dilakukan terhadap pertumbuhan tanaman (tinggi tanaman dan luas kanopi), komponen hasil dan hasil serta serangan hama dan penyakit penting yang menyerang tanaman cabai. Hasil penelitian menunjukkan bahwa kombinasi Mg, B, dan pupuk hayati yang diaplikasikan sebanyak dua kali pada umur 30 HST dan 45 HST mampu meningkatkan produktivitas cabai sebesar 21,68 ton/ha atau meningkat sebesar 54,53% dibandingkan dengan kontrol. Peningkatan produktivitas cabai terjadi karena adanya perbaikan dalam komponen hasil seperti jumlah bunga, jumlah buah, panjang, dan bobot buah serta adanya penekanan terhadap serangan hama dan penyakit seperti trips, antraknosa, lalat buah, dan penggerek buah sebesar 18,10% sampai 23,93%.</p><p><strong>Keywords</strong></p><p><em>Capsicum annuum</em>; Unsur hara makro; Pupuk hayati; Produktivitas; Organisme pengganggu tumbuhan</p><p><strong>Abstract</strong></p><p>The use of biofertilizer and macro and micro nutrients enhanced the growth and development, yield quality of vegetable crops as well as nutrient status of soil to a greater extent and to increased on pests and diseases resistance. Organic sources of nutrients including biofertilizers also economize the use of chemical fertilizers. The objectives of this study were to determine the best combination of Mg, B, and biofertilizer that increase the growth and yield of chili pepper and the impact to pest and diseases on chili pepper. The field experiment was conducted at the experimental field of the Indonesian Vegetable Research Institute, Lembang, West Java from June 2018 to February 2019. The experiment was arranged in a Randomized Block Design with eight treatments and four replicated. The treatments were Mg, B, and their combinations with biofertilizer compared to the conventional technologies as a control. The observations were carried out on the growth parameters (plant height and leaf canopy), yield components, pest and diseases of chili pepper. The results showed that the combinations of Mg, B, and biofertilizer increased the yield of chili up to 21.68 ton/ha or positive interaction beside beneficial agent with Mg, B, and biofertilizer package on 54.53%. Increased productivity of chili occurs because of improvements in yield components such as the number of flowers, number of fruits, fruit length and fruit weight and reduction of pest and disease attacks such as thrips, anthracnose, fruit flies and, fruit borers by 18.10% to 23.93%.</p>


1967 ◽  
Vol 68 (3) ◽  
pp. 317-324 ◽  
Author(s):  
E. J. M. Kirby

1. Cereal plant density affects yield and growth parameters of fundamental importance. An experiment is described in which growth and development, and yield and yield components of barley grown over a wide range of density were examined.2. Four varieties of barley—Proctor, Plumage-Archer, Domen, and Moore—were grown at densities approximately equivalent to 35, 70, 140 and 280 lb/acre. Density was found not to affect seedling establishment or plant survival, but there was a variety effect on seedling establishment.3. Varietal differences were seen in maximum tiller number, and the percentage of tillers surviving to form ears. These differences were most marked between the six-row variety and two-row varieties. The effect of increasing density was to increase the maximum tiller number, but this was followed by different rates of tiller death until early June, after which there was no further compensation for tiller number. Ear emergence and ear number were affected both by variety and density.


Author(s):  
Rakesh Kumar ◽  
Deepak Kumar Rathore ◽  
Magan Singh ◽  
Parveen Kumar ◽  
Anil Khippal

An experiment consisting of four phosphorus levels (0, 40, 60 and 80 kg/ha P2O5) and five zinc levels (0, 10, 20, 30 and 40 kg/ha ZnSO4) was laid out in randomized block design in factorial mode to find out the effect on yield and quality of fodder cowpea [Vigna Unguiculata (L.)Walp.]. Growth parameters viz. plant height, number of leaves, number of branches, leaf length, leaf width and leaf stem ratio were improved with the application of 60 kg/ha P2O5 and 20 kg/ha ZnSO4. Application of 60 kg/ha phosphorus recorded 27.64 t/ha yield, which was 7.50 and 55.6 % higher than 40 kg/ha and no phosphorus application, respectively. Application of zinc in the form of ZnSO4 @ 20 kg/ha increased significantly the green fodder yield (25.89 t/ha). Interaction effect of phosphorus and zinc application was found significant with respect to green fodder, dry matter yield and nutrient uptake. Yield, phosphorus and zinc uptake in cowpea fodder were showing declining trend at combination of application rate more than 60 kg/ha P2O5 and 20 kg/ha ZnSO4.


2018 ◽  
Vol 20 (1) ◽  
pp. 7
Author(s):  
Herjuna Praba Wisesa ◽  
Dwi Harjoko ◽  
Ahmad Yunus

Rice is the main product in Indonesia in the context of the supply of rice as a national food. Efforts to increase rice production are faced with various constraints such as fertilization ineffective and under-utilization of hybrid varieties by farmers. This study aims to determine the effect of differences in nutrient application through the leaves on the growth and yield of china’s hybrid rice. The method used is strip plots design. The design consists of two factors, namely the variety and diversity of nutrient factors. There are five varieties of rice that are used with 3 treatments a difference nutrient which is water, micro nutrient, complete nutrient. The results obtained indicate that the applications of micro-complete nutrient through the leaves have outcomes on the growth parameters that affect on plant height and the parameters of production that is the total number of grains per hill, weight of grain content per hill and percentage of grain content. Then, hybrid rice which has the highest potential yield after applying nutrient based on the amount of grain per clump is Hybrid I and Hybrid III.


OENO One ◽  
2003 ◽  
Vol 37 (1) ◽  
pp. 39
Author(s):  
Eric Duchêne ◽  
Nathalie Jaegli ◽  
R. Salber ◽  
Jean-Pierre Gaudillère

<p style="text-align: justify;">Two levels of leaf/area ratio were created for two varieties of grapevine (<em>Vitis vinifera</em> L.) in a glasshouse. Carbohydrate and free amino acids concentrations in the pruning wood were significantly reduced when the leaf/fruit ratio was low. In the following season, growth parameters were affected as well as yield components such as the number of shoots per plant, the number of inflorescences per shoot, the number of flowers per inflorescence and the number of berries per cluster. Fruit set was however not altered. Weight of grapes at fruit set was reduced by 68% for Gewurztraminer and by 46 % for Pinot noir.</p>


Author(s):  
Jauhari Syamsiah ◽  
Rahayu Rahayu ◽  
Wily Binafsihi

<span>Successful management of saline water could have significant potential for agricultural development in many areas, particularly in freshwater-scarce regions. To date, the effect of salinity on shallot (<em>Allium Cepa</em> L.) yield and growth parameters has not been studied in detail specifically for local varieties cultivated in Inceptisols. Therefore, the present study was designed to evaluate the effects of different levels of irrigation-water salinity (0, 1, 2, and 3 dS</span><span>m</span><sup><span lang="IN">-1</span></sup><span>) on soil chemical properties, the growth, and yield of local shallot varieties. The experiment was conducted in pots using a randomized plot design with two factors and three replications. The results showed that increases in salinity level affected increases soil pH, exchangeable Na percentages</span><span lang="IN">,</span><span> and plant height growth. Nevertheless, bulb number and weight, soil exchangeable Ca and Mg, soil organic carbon, and sodium adsorption ratio (SAR) was not significantly affected. The findings of the present study suggest that the local varieties—<em>Brebes</em> and <em>Purbalingga</em>—with irrigated salinity levels up to 3 dS</span><span>m</span><sup><span lang="IN">-1</span></sup><span>can be tolerated for shallot cultivation in Inceptisols.</span>


2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Alhassan Bawa

Background and Objective. Maize is one of the oldest cultivated crops. It is the third most important cereal after wheat and rice globally. Compared to all other cereals, maize has the highest average yield per unit area. The objective of the research was to evaluate maize varietal response to different nitrogen fertilizer rates. Materials and Methods. The treatment consisted of two factors, namely six varieties of maize and four levels of nitrogen application rates. These were arranged in 6 × 4 factorial combinations and laid out using randomized complete block design (RCBD) with three replications. The data collected were subjected to combined analysis for variation in factorial experiments in RCBD using Genstat statistical package edition 18. The means were separated using Duncan’s multiple range test at a 5% probability level. Results. The study revealed that varieties, such as IWD-C3-SYN-F2 and OBATAMPA, produced the highest grain yield and growth parameters (agronomic traits) relative to other varieties. The maximum grain yield and biomass production also occurred at the nitrogen application rates of 90 and 120 kg N/ha. Conclusion. Varieties, such as IWD-C3-SYN-F2 and OBATAMPA, and N rate of 90 kg N/ha are, therefore, recommended to be used for maize production by the resource-poor farmers in the Guinea Savanna Agro-Ecology of Ghana.


2017 ◽  
Vol 28 (3) ◽  
pp. 174-183
Author(s):  
NAMY Ali ◽  
MAR Sarkar ◽  
SK Sarkar ◽  
SK Paul

A field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to examine the influence of number seedlings hill-1, rate and time of nitrogen application on the growth parameters of late transplant Aman rice (cv. BR23). The study, laid out in a RCBD with three replications, was comprised of three levels of number of seedlings hill-1 viz. 2, 4 and 6 seedlings hill-1, three nitrogen rates viz. 0, 60 and 120 kg N ha-1 and three levels of time of nitrogen application viz. nitrogen application in two equal splits at 15 DAT and early tillering stage (ET); nitrogen application in three equal splits at 15 DAT, ET and panicle initiation stages (PI); and nitrogen application in four equal splits at 15 DAT, ET, PI and flowering stages (F). The highest plant height (101.04 cm) was found at 80 DAT from 6 seedlings hill-1. 120 kg N ha-1 nitrogen application produced the tallest (104.08 cm) plant and nitrogen application in two equal splits at 15 DAT and ET gave the highest plant height (99.44 cm) at 80 DAT. The maximum number of tillers hill-1 (19.45) at 60 DAT and the highest leaf area index (3.08) at 40 DAT were found in the interaction effect among 6 seedlings hill-1, 120 kg N ha-1 and three times of nitrogen application at 15 DAT, early tillering and panicle initiation stages. The highest shoot dry matter hill-1 (28 g) was obtained as the interaction effect among  6 seedlings hill-1, 120 kg N ha-1 and nitrogen application in four equal splits at 15 DAT, early tillering, panicle initiation and flowering stages. The grain yield, although statistically non-significant, was numerically highest in seedlings hill-1, 120 kg N ha-1 and nitrogen application in three equal splits at 15 DAT, early tillering and panicle initiation stages. Therefore, transplanting with 6 seedlings hill-1 and application of 120 kg N ha-1 in 3-4 equal splits could be a better management practice for ensuring proper growth of the late transplant Aman rice.Progressive Agriculture 28 (3): 174-183, 2017


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