scholarly journals Effect of Potassium on Potato Tuber Production in Acid Soils of Malepatan, Pokhara

1970 ◽  
Vol 7 ◽  
pp. 42-48 ◽  
Author(s):  
BH Adhikari ◽  
KB Karki
Keyword(s):  
Potato Tuber ◽  
Foliar Application ◽  
Acid Soil ◽  
Block Design ◽  
Acid Soils ◽  
Soil Condition ◽  
Soil Potassium ◽  
Research Journal ◽  
Tuber Production ◽  
Pokhara Valley

Soils of Pokhara valley, especially Malepatan, are fine textured silt loam, extremely acidic innature (3.7-4.0 pH) and are medium in soil potassium content. On-station experiments wereconducted to assess the response of potassium (K2O) and its application methods on potato tuberyield in an extremely acid soil condition. Six potassium levels (0, 50, 75, 100 kg ha-1 as basalapplication, 50 kg basal plus 50 kg top dressed, and 50 kg basal plus 50 kg foliar application)were tested in the experiment for three consecutive years (2000, 2001 and 2002). A randomizedcomplete block design (RCBD) with 3 replications was employed. Variety used was MS 42.Nitrogen (N), phosphorus (P2O5) and compost were applied as basal dose in each plots at the rateof 100 kg, 50 kg and 20 t ha-1, respectively. Three years mean result on the plant growthcharacters revealed that tallest plant height was recorded (33.22 cm) when 50 kg ha-1 potassiumwas applied basally and 50 kg ha-1 top-dressed. The trend was quite similar in tillers production(6.96 branches plant-1) and biomass production (168.66 g plant-1). Maximum of 473.33-g plant-1of tubers was produced when 100 kg of potassium was applied basal single dose. Highest tuberyield of 24.75 t ha-1 of tuber were produced when 50 kg potassium was applied basally and 50kg top- dressed, a total of 100 kg ha-1. Highly significant response of potassium levels on tuberproduction was observed in all the years. The results of this investigation suggested thatapplication of potassium (K2O) at the rate of 50 kg ha-1 basal and 50 kg ha-1 top-dressed in 45days could increase potato tuber yield satisfactorily in extremely acid soil condition.Key words: Basal application; potassium levels; Solanum tuberosum; tuber production; topdressingDOI: 10.3126/narj.v7i0.1867Nepal Agriculture Research Journal Vol.7 2006 pp.42-48

scholarly journals Lime and foliar application of molybdenum affects nodulation, nutrient uptake and pod production in soybean grown in acid soils

2019 ◽  
Vol 13 (1) ◽  
pp. 57-65
Author(s):  
J. A. Adjetey
Keyword(s):  
Nutrient Uptake ◽  
Foliar Application ◽  
Growth Parameters ◽  
Block Design ◽  
Acid Soils ◽  
Nutrient Content ◽  
Ammonium Molybdate ◽  
Nodule Formation ◽  
Exchangeable Acidity ◽  
The University

Soil acidity is commonly ameliorated with lime while little attention is given to the application of molybdenum which is deficient in acid soils. Molybdenum is an important component of the nitrogenase enzyme essential for the symbiotic nitrogen fixing bacteria.  An experiment was conducted in a controlled environment at the University of KwaZulu-Natal to evaluate the effect of lime and molybdenum on nodulation, growth and shoot nutrient content of soybean. The experiment was a randomised complete block design with three rates of lime applied at 0, 2650 and 4280 kg ha-1 and molybdenum as ammonium molybdate at 0 and 0.5 g L-1. Lime significantly (p<0.01) increased the uptake of Ca and P but decreased that of Mn. Also, increasing lime levels positively influenced most of the important plant growth parameters measured in the study. Molybdenum application significantly increased nodule formation but did not influence the concentration and uptake of the nutrients measured. Lime application also improved soil Ca and Mg but reduced Mn and exchangeable acidity levels at the end of the study.  The treatment combination of lime at 4280 kg ha-1 and ammonium molybdate at 0.5 g L-1 gave the best result in nearly all parameters tested and it can hence be concluded that this combination improves both the nutrient uptake and nodulation of soybean grown in soil with very high acid saturation.

scholarly journals Acid soil tolerance of 28 soybean varieties in hydroponics and soil-based evaluation

2021 ◽  
Vol 911 (1) ◽  
pp. 012001
Author(s):  
Winda Puspitasari ◽  
Taufiq Bachtiar ◽  
Nur Robifahmi ◽  
Anisiyah ◽  
Muhammad Iqbal
Keyword(s):  
Plant Growth ◽  
Acid Soil ◽  
Block Design ◽  
Genetic Material ◽  
Acid Soils ◽  
Dry Weight ◽  
Plant Response ◽  
Breeding Program ◽  
Soil Conditions ◽  
Growth Evaluation

Abstract Utilization of marginal soil plays important role in improving soybean production in Indonesia. Soybean breeding program targeting high yielding varieties and tolerant to acid soils is estimated to be more cost-effective and environmentally friendly approach in improving plant productivity on acid soil. The aim of this research was to study plant response under acid soil stress and to identify tolerant and sensitive genotype which might be useful for further breeding program. The experiment was conducted using 28 soybean varieties as genetic material. The experiment was carried out in two parts, including seedling evaluation in hydroponics and plant growth evaluation in polybag using acid soil. The first experiment was arranged in factorial randomized block design, consisting of genotype, pH, and AlCl3 treatment as the factors with 5 replications. The second experiment was conducted using randomized complete block design with 5 replications to identify the plant growth in different genotype and acid soil conditions. The results showed that the low pH and high Al inhibits seedlings root growth of soybean genotypes. The estimation of STI from root and shoot dry weight suggests Detam 1 as the most tolerant genotype followed by other varieties with lower level of tolerance. Plant response was different each genotype to both seedling evaluation in hydroponics and plant growth evaluation using acid soil.

scholarly journals Effects of nano and ionized silicon on physiological and biochemical characteristics of potato (Solanum tuberosum L.)

2021 ◽  
Author(s):  
Bijan Saadatian ◽  
Mohamad Kafi ◽  
Mohamad Banayan aval ◽  
Hossein Hammami
Keyword(s):  
Culture System ◽  
Foliar Application ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Radical Scavenging ◽  
Potato Seed ◽  
Soilless Culture ◽  
Water Control ◽  
Positive Effects ◽  
Tuber Production

Abstract The role of protecting and structure stabilizing effects of silicon (Si) has been demonstrated on different plant species. Still it has not been used in potato seed production under a soilless culture system. Furthermore, particle size is very important in particle adhesion and interactions with biological reactions. Therefore, the use of nano-Si particles may be more efficient than ionized -Si. For this purpose, a greenhouse experiment under a soilless culture system was performed as a randomized complete block design (RCBD) arranged in a factorial with three replications. In this study, Si concentration (distilled water (Control), 0.8, 1.6, 2.4, and 3.2 mmol Si L− 1) and Si type at two levels (nano and ionized Si-based in sodium silicate) were tested. The results revealed that foliar application of Si significantly improved the net photosynthesis rate, water use efficiency, mesophyll conductance, Chl a, Chl b, carotenoids, Chl a/b ratio, DPPH radical scavenging, total phenol, mean weight mini-tuber, and yield, whereas transpiration rate in Si-treated plants decreased. Moreover, the greatest positive influence of Si was observed at 3.2 mmol L− 1. The effect of Nano-Si was greater than ionized-Si at all Si concentrations. The results revealed that improved biochemical and photosynthetic characteristics of potato plantlet under Nano-Si treatments compared to ionized-Si treatments. However, these relations were not significant under ionized treatment. This study indicated that the application of Si (nano and ionized) for potato growing and mini-tuber production has positive effects. Generally, under soilless culture system, Nano-Si have higher efficiency than ionized-Si in mini-tuber production.

Effect of Urea and Nano-Nitrogen Fertigation and Foliar Application of Nano-Boron and Molybdenum on some Growth and Yield Parameters of Potato

2020 ◽  
Vol 10 (1) ◽  
pp. 253-263
Author(s):  
Hayyawi W.A. Al-juthery ◽  
Estabraq Hilal Obaid Al-Maamouri
Keyword(s):  
Foliar Application ◽  
Growth Traits ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Growth And Yield ◽  
Control Treatment ◽  
Acid Yield ◽  
Biological Yield ◽  
Starch Yield ◽  
Private Farm

Investigating the effect of urea and nano-nitrogen fertigation and foliar application of nano B and Mo on growth and yield of potato Solanum tuberosum L. [Rivera-A]. The study was conducted in a private farm located in the Al-Taleah area - Babylon governorate. The experiment consisted of (12) treatments consisting of separated fertigation of nano nitrogen (25% N) and urea (46% N), single treatments of leaf spraying of nano Mo (5%), Nano B (9%), nano-binary combinations (Mo+B) and (U+ Nano Mo), (U+Nano B), Nano (N+Mo), Nano (N+B), and tricombination treatments of (U+Mo+B), Nano (N+Mo+B) additional to the control treatment. Randomize Complete Block Design (RCBD) and one way simple experiment with three replicates. Fertilizers were applied at levels of 40 liters h-1 of Nano-N fertilizer (25% N) and 300 kg h-1 urea fertilizer (46% N). They were sprayed early in the morning after (40) days after planting four times. Two weeks is the period between an application and another according to the recommendation of (1) kg  h-1 nano-fertilizer of (B) and (500) g h-1 of  Mo. Fertilizers were injected and sprayed at (10, 20, 30 and 40)% of the total amount of the fertilizer were applied as the first, second, third and fourth applications, respectively. Some growth traits were tested including the chlorophyll content in the leaves, the total dry vegetative yild, the soft tubers yield, and the biological yield, proteins and ascorbic acid yield compared to the control (spray water only). The results of the Duncan test showed a significant increase in most of the studied traits of nano-tricombination (N+Mo+B) in the fresh tubers yield,  dry vegetative yield  , the biological yield, starch yield ,the total protein and ascorbic yield (37.53, 1.799, 8.138,4.152 , 481.3and 653.8 meg ha-1) respectively .compare to control (21.58 , 0.890, 4.463  ,2.323 , 366.1 and 215.5 meg ha-1) respectively.

AN ASSESSMENT OF THE SOIL ACIDITY PROBLEM IN ALBERTA AND NORTHEASTERN BRITISH COLUMBIA

1977 ◽  
Vol 57 (2) ◽  
pp. 157-164 ◽  
Author(s):  
D. C. PENNEY ◽  
M. NYBORG ◽  
P. B. HOYT ◽  
W. A. RICE ◽  
B. SIEMENS ◽  
...  
Keyword(s):  
British Columbia ◽  
Soil Ph ◽  
Soil Acidity ◽  
Field Experiments ◽  
Trifolium Pratense ◽  
Acid Soil ◽  
Acid Soils ◽  
Red Clover ◽  
Hordeum Vulgare L ◽  
Crop Species

The amount of cultivated acid soil in Alberta and northeastern British Columbia was estimated from pH values of farm samples analyzed by the Alberta Soil Testing Laboratory, and the effect of soil acidity on crops was assessed from field experiments on 28 typical acid soils. The field experiments consisted of two cultivars of barley (Hordeum vulgare L.) and one cultivar each of rapeseed (Brassica campestris L.), red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) grown with and without lime for 2 yr. There are about 30,000 ha of soils with a pH of 5.0 or less where soil acidity seriously restricts yields of all four crop species. There are approximately 300,000 ha with a soil pH of 5.1–5.5 where liming will on the average increase yields of alfalfa by 100%, yields of barley by 10–15%, and yields of rapeseed and red clover by 5–10%. There are a further 1,600,000 ha where soil pH ranges from 5.6 to 6.0 and liming will increase yields of alfalfa by approximately 50% and yields of barley, rapeseed and red clover by at least 4–5%.

scholarly journals Coapplication of Chicken Litter Biochar and Urea Only to Improve Nutrients Use Efficiency and Yield ofOryza sativaL. Cultivation on a Tropical Acid Soil

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Ali Maru ◽  
Osumanu Ahmed Haruna ◽  
Walter Charles Primus
Keyword(s):  
Acid Soil ◽  
Nutrient Use Efficiency ◽  
Chemical Properties ◽  
Acid Soils ◽  
Field Trials ◽  
Soil Chemical Properties ◽  
Nutrient Use ◽  
Chicken Litter ◽  
Rice Yields ◽  
Use Efficiency

The excessive use of nitrogen (N) fertilizers in sustaining high rice yields due to N dynamics in tropical acid soils not only is economically unsustainable but also causes environmental pollution. The objective of this study was to coapply biochar and urea to improve soil chemical properties and productivity of rice. Biochar (5 t ha−1) and different rates of urea (100%, 75%, 50%, 25%, and 0% of recommended N application) were evaluated in both pot and field trials. Selected soil chemical properties, rice plants growth variables, nutrient use efficiency, and yield were determined using standard procedures. Coapplication of biochar with 100% and 75% urea recommendation rates significantly increased nutrients availability (especially P and K) and their use efficiency in both pot and field trials. These treatments also significantly increased rice growth variables and grain yield. Coapplication of biochar and urea application at 75% of the recommended rate can be used to improve soil chemical properties and productivity and reduce urea use by 25%.

scholarly journals Biochemical activity and bioassay on maize seedling of selected indigenous phosphate-solubilizing bacteria isolated from the acid soil ecosystem

2020 ◽  
Vol 5 (1) ◽  
pp. 300-304
Author(s):  
Betty Natalie Fitriatin ◽  
Dita Fauziah ◽  
Fabira Nur Fitriani ◽  
Dewi Nurma Ningtyas ◽  
Pujawati Suryatmana ◽  
...  
Keyword(s):  
Acid Soil ◽  
Block Design ◽  
Maize Seedling ◽  
P Availability ◽  
Phosphate Solubilizing Bacteria ◽  
Soil Ecosystem ◽  
Maize Productivity ◽  
Randomized Block Design ◽  
Phosphate Solubilizing ◽  
Microbial Fertilizers

AbstractPhosphorus availability is the major constraint for plant growth in the acid soil ecosystem, due to high fixation by Al and Fe. Microbial fertilizers such as phosphate-solubilizing bacteria (PSB) can increase P availability in soils for root uptake. The objective of the research was to verify the ability of four isolates of PSB isolated from acid soil to solubilize unavailable inorganic phosphate, produce phosphatase, malic acid and indole acetic acid (IAA), as well as increase plant height of maize seedling. The bioassay by growing maize seedling in liquid nutrients has been performed to study the response of seedling to PSB inoculation. The experimental design of bioassay was a randomized block design with five replications. The results showed that the isolates RR 1 and SPR 4 had a relatively high solubilizing index. Moreover, all the PSB isolates had the ability to produce phosphatase and IAA and dissolve P. The performance of PSB-inoculated seedling was better visually and the root length was increased by 66.7–74.5% compared to the control. This result concludes that the species of four isolates needs to be identified by a biomolecular method and formulated as biofertilizers for increasing the maize productivity in the acid soil ecosystem.

Effect of foliar application of iron and zinc on performance of transplanted rice in middle Gangetic plains of Bihar

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
MOHAMMAD\ HASHIM ◽  
◽  
V K SINGH ◽  
K K SINGH ◽  
SHIVA DHAR ◽  
...  
Keyword(s):  
Agricultural Research ◽  
Foliar Application ◽  
Block Design ◽  
Indian Agricultural Research Institute ◽  
Ferrous Sulphate ◽  
Growth Yield ◽  
Growth Stages ◽  
Higher Plant ◽  
Gangetic Plains ◽  
Iron And Zinc

A field experiment was conducted during kharif season of 2015 and 2016 at research farmof the ICAR- Indian Agricultural Research Institute Regional Station Pusa, Samastipur, Biharto determine the foliar feeding of micronutrients (iron and zinc at different growth stages)on growth, yield and economics of rice in middle Gangetic plains of Bihar. The experimentwas laid out in randomized block design consisting of 9 treatments with 3 replications. Thetreatments consist of 0.5% spray of Zinc Sulphate and 1% spray of Ferrous Sulphate at fourdifferent growth stages i.e. 40, 50, 60 and 70 days aĞer transplanting (DAT) and one con-trol. The results shown significant increasing trends of growth, yield aĴributes and yield ofrice with four sprays of 1.0% solution of FeSO4at 40, 50, 60 and 70 days and three sprays ofZnSO4at 50, 60 and 70 days recorded significantly higher plant height, effective tillers/m2,panicle length, grains/panicle, 1,000-grain weight, biological yield, grain yield and straw yieldat maturity. These treatments also gave significantly higher net returns and benefit: cost ratioover the control.

Preferential nitrate immobilization in alkaline soils

Soil Research ◽  
1992 ◽  
Vol 30 (5) ◽  
pp. 737 ◽  
Author(s):  
IJ Rochester ◽  
GA Constable ◽  
DA Macleod
Keyword(s):  
Acid Soil ◽  
Nitrification Inhibitor ◽  
Biological Significance ◽  
Nitrate Assimilation ◽  
Acid Soils ◽  
Ammonium Assimilation ◽  
Potassium Nitrate ◽  
Alkaline Soil ◽  
Alkaline Soils ◽  
Nitrate Immobilization

The literature pertaining to N immobilization indicates that ammonium is immobilized in preference to nitrate. Our previous research in an alkaline clay soil has indicated substantial immobilization of nitrate. To verify the preference for immobilization of nitrate or ammonium by the microbial biomass in this and other soil types, the immobilization of ammonium and nitrate from applications of ammonium sulfate and potassium nitrate following the addition of cotton crop stubble was monitored in six soils. The preference for ammonium or nitrate immobilization was highly correlated with each soil's pH, C/N ratio and its nitrification capacity. Nitrate was immobilized in preference to ammonium in neutral and alkaline soils; ammonium was preferentially immobilized in acid soils. No assimilation of nitrate (or nitrification) occurred in the most acid soil. Similarly, little assimilation of ammonium occurred in the most alkaline soil. Two physiological pathways, the nitrate assimilation pathway and the ammonium assimilation pathway, appear to operate concurrently; the dominance of one pathway over the other is indicated by soil pH. The addition of a nitrification inhibitor to an alkaline soil enhanced the immobilization of ammonium. Recovery of 15N confirmed that N was not denitrified, but was biologically immobilized. The immobilization of 1 5 ~ and the apparent immobilization of N were similar in magnitude. The identification of preferential nitrate immobilization has profound biological significance for the cycling of N in alkaline soils.

scholarly journals Effect of potassium and zinc on growth, yield and economics of sweet potato (Ipomoea batatas L.) cv. CO-34

2017 ◽  
Vol 9 (1) ◽  
pp. 291-297
Author(s):  
Pravin Singh ◽  
Kavita Aravindakshan ◽  
I. B. Maurya ◽  
Jitendra Singh ◽  
Bhim Singh ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Tuber Yield ◽  
Foliar Application ◽  
Block Design ◽  
Maximum Yield ◽  
Growth Yield ◽  
Cost Ratio ◽  
Average Weight ◽  
Four Levels

A field experiment was conducted to study the effect of different levels of potassium and zinc on growth, yield and economics of sweet potato. The experiment was laid out on clay and loam soil by adopting randomized block design with factorial technique (FRBD). The sixteen treatments consisted of combination of four levels of po-tassium (0, 80, 100 and 120 kg/ha through muriate of potash and four levels of foliar zinc (control i.e. water spray, 10, 20 and 30ppm) through zinc sulphate. The individual application of potassium 120 kg K2O/ha significantly in-creased the number of tubers per plant (4.60), average weight of tuber (275.31 g), length of tuber (16.77 cm), diam-eter of tuber (5.69 cm), tuber yield per plot (9.71 kg), tuber yield per hectare (49.04 t) respectively as compared to control. With the foliar application of zinc (30 ppm) significant increase in number of tubers per plant (4.18), average weight of tuber (234.73 g), length of tuber (18.12 cm), diameter of tuber (5.16 cm), tuber yield per plot (8.33 kg) and tuber yield per hectare (42.05 t) was recordedas compared to control. The treatment combination (120 kg K2O+30ppm Zn) recorded the maximum yield parameters i.e. chlorophyll content (37.00 mg/100 g), average weight of tuber (302.17 g), length of tuber (19.82 cm), diameter of tuber (5.97 cm), maximum tuber yield per plot (11.02 kg), tuber yield per hectare (55.67 t) and benefit-cost ratio (B: C ratio) of 4.22:1.While, the treatment (120 kg K2O+30ppm Zn) had the maximum number of tuber (4.86), minimum number of tuber was recorded in control. From the experi-ment, it appeared that application of potassium and zinc can be used to improve yield and higher net monetary re-turns of sweet potato.

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