scholarly journals EFFECT OF DIFFERENT BORON SOURCES AND LEVELS ON MACRO AND MICRONUTRIENT UPTAKE AND POST-HARVEST AVAILABILITY IN SALINE SODIC SOIL

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
S. Sathiyamurthi ◽  
D. Elayaraja ◽  
R. Gobi ◽  
K. Dhanasekaran ◽  
M. Ramya

The study was conducted to assess the effect of different boron sources and levels of macro and micronutrient uptake andpostharvest availability in saline sodic soil. Four levels of B (0, 0.5, 1.0 and 1.5 mg kg-1) was supplied through three different sources, namely borax, sodium octaborate and magnesium boro humate complex. A total of twelve treatment combinations were laidin factorial CRD design with three replications. Cotton var. LRA5166 was chosen as the test crop. The results revealed that application of 1.5 mg B kg-1 as magnesium boro humaterecorded the highest NPK uptake of 3.05, 0.99 and 2.55 g pot-1, respectively and the highest mean Zn, Fe, Mn and Cu uptake of 8.78, 13.69, 5.93 and 1.84 mg pot-1, respectively.The available NPK and other micronutrient status in post-harvest soil were invariably not influenced by the source and levels of the boron sources.

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
S. Srinivasan

The roots, leaves and seeds of ambrette are considered as valuable traditional medicines. The bitter, sweet, acrid, aromatic seeds are used as tonic and are considered to possess cooling, aphrodisiac, ophthalmic, cardiotonic, digestive, stomachiecm carminative, pectoral diuretic, stimulant, antispasmodic and deodorant properties. Crop removes nutrients continuously from soil and therefore, their replenishment though fertilizers and manures are essential. To find out the integrated effect of inorganic fertilizers, neem coated urea, enriched pressmud compost and sea weed extract on NPK uptake by ambrette and its post – harvest soil NPK status, a field investigation was carried out at Farmer’s Field Sivapuri Village, Chidambaram Taluk, Cuddalore District during Kharif, 2018. The experiment was laid out in Randomized Block Design (RBD) with eight treatments and three replications. The crop was grown to maturity with proper cultural practices. The results revealed that application of integrated application of inorganic fertilizers, neem coated urea, enriched pressmud compost and sea weed extract resulted in significantly highest NPK uptake by ambretee and influenced the post – harvest soil fertility status with respect to available NPK.


Author(s):  
V. Dhinesh ◽  
R. Santhi

Following Inductive methodology (fertility gradient concept), a field experiment was conducted to study the effect of initial soil fertility and Integrated Plant Nutrition System (IPNS) on the yield of brinjal (var. CO 2) on Typic Rhodustalf of Tamil Nadu. In the first phase of the experiment, variations in soil fertility with reference to soil available N, P and K was established among the three fertility strips with the addition of fertilizers at graded levels and by growing fodder sorghum as gradient crop. In the second phase viz., the test crop experiment with brinjal, consisted of four levels each of fertilizer N, P2O5 and K2O and three levels of farm yard manure (FYM). The highest yield of 35.8 t ha-1was recorded with 150:75:75 kg ha-1 of fertilizer N, P2O5 and K2O along with 12.5 t ha-1 of FYM in strip III with initial soil available NPK status of 203, 34 and 500 kg ha-1 respectively. The fruit yield as well as NPK uptake by brinjal had increased with increase in initial soil fertility and with increase in the levels of fertilizer N, P2O5 and K2O and FYM.


2021 ◽  
Vol 10 (20) ◽  
pp. 165-171
Author(s):  
Tincuța-Marta Gocan ◽  
Ileana Andreica ◽  
Daniela-Sabina Poșta ◽  
Vasile Lazăr ◽  
Sándor Rózsa ◽  
...  

The cut flowers are living organs, with intense metabolic activity, subjected to a rapid aging process compared to the undetached flowers from the mother plant. Improving the life of cut flowers is one of the most important factors for customer satisfaction. The effect of silver thiosulphate (STS) and commercial mixtures was studied in carnation cut flowers and kept in randomized vases according to experimental factors. Three commercial mixtures were used (Chrysal, Flower Food, Fleur̛ Rose) and for thiosulphate four levels (0 or control, 0.03, 0.06 and 0.9 mM). The interaction of the two factors studied was insignificant for most traits, including wilting percentage and vase lifespan, which may involve the application of both substances alone is sufficient to improve post-harvest quality and is not necessary to use simultaneously in the preservative solution. The results also showed that following the interaction of the two factors, treatment with 0.06 mM silver thiosulphate can be applied to improve the post-harvest quality of blossom cut flowers and commercial chemical mixtures can be successfully replaced.


Author(s):  
Nisha Chaudhary ◽  
J. K. Parmar ◽  
Drashti Chaudhari ◽  
Manish Yadav

A pot experiment was conducted during kharif season of 2019 to carry out the study on “Interactive effect of potash (K2O), potassium mobilizing bacteria (KMB) and FYM on forage yield, nutrient uptake by forage maize and soil fertility in a loamy sand soil of middle Gujarat”. Application of K2O @ 60 kg ha-1, KMB and FYM recorded significantly the highest plant height of forage maize at harvest over respective control. Crop fertilized with K2O @ 60 kg ha-1 and KMB gave significantly the highest green forage and dry matter yield. The results indicated that application of K2O @ 60 kg ha-1, potassium mobilizing bacteria recorded significantly the highest uptake of N, P, K, Fe and Zn by crop at harvest. Significantly the highest uptake of N, K and Cu were found with application of FYM @10 t ha-1. Significantly the highest K uptake by maize as well as higher P and Zn uptake by maize were observed due to interaction effect of K × KMB (60 kg K2O ha-1 with KMB). In case of N and Cu uptake by maize were noted the Significantly higher due to interaction effect of K × KMB (30 kg K2O ha-1 with KMB) and K × KMB × FYM (60 kg K2O ha-1 with KMB and FYM), respectively. The integrated use of potassium fertilizers along with KBM or in combination with FYM significantly improved the maize grain and nutrient uptake.


2018 ◽  
Vol 2 (3) ◽  
pp. 112
Author(s):  
Heri Soegianto ◽  
Azwar Ma’as ◽  
Makruf Nurudin ◽  
Sri Nuryani Hidayah Utami

The available soils for surgarcane plantation is Ultisols. However, the Ultisols has some limitations on its chemical fertility. Efforts to improve the quality of the soil can be done with applying organic matter such as filter cake and bagasse ash resulting from the process of making sugar from sugarcane. This study was proposed to determine the effects of bagasse ash and filter cake to availabilities of NPK in the soil and NPK uptakes by sugarcane, so that they were expected to be able to improve maximum sugarcane growth in Ultisols in Tulang Bawang. This field research used completely randomized design with two factors. The first factor was the bagasse ash doses in four levels: without bagasse ash (A0), 10 ton/ha of dry bagasse ash (A1), 20 ton/ha of dry bagasse ash (A2), and 40 ton/ha of dry bagasse ash (A3). The second factor was the filter cake doses in four levels: without filter cake (B0), 20 ton/ha of dry filter cake (B1), 40 ton/ha of dry filter cake (B2), and 80 ton/ha of dry filter cake (B3). There were a total of 16 combinations of treatment with 3 blocks as repetitions. Data were analyzed by using F-test with 5% significance. When analysis result showed significant differences between treatments, it was then followed by DMR test with 5% significance level for normal data. The results showed that the improvement of NPK status of Ultisols in Lampung might be achieved by applying the filter cake and bagasse ash techniques. Some results of this study showed that treatment of 40 ton/ha bagasse ash for NPK uptakes was significantly different and higher than without bagasse ash treatment. Treatment of 80 ton/ha filter cake for NPK uptakes was significantly different and higher than without filter cake treatment. The highest N uptake (27.84 kg/ha) was in sugarcane at 2 MAP with 80 ton/ha filter cake treatment. The highest P uptake (11.59 kg/ha) was in sugarcane at 2 MAP with 40 ton/ha bagasse ash treatment. The highest K uptake (117.67 kg/ha) was in sugarcane at 8 MAP with 80 ton/ha filter cake treatment. Treatment of 80 ton/ha filter cake influenced significantly to the sugarcane height compared to without filter cake and 20 ton/ha filter cake treatment, but it did not differ significantly compared to 40 ton/ha filter cake treatment. The highest sugarcane (167.99 cm) was at 80 ton/ha filter cake treatment. Filter cake dose treatments did not influence significantly the numbers of saplings and stem diameter of sugarcane aged 8 MAP.


HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 444E-445
Author(s):  
M. Elizabeth Conley ◽  
Ellen T. Paparozzi

In order to understand the effects of reduced nitrogen and sulfur on overall poinsettia plant growth and development, experiments were run to determine the relationship, if any, between nitrogen and sulfur applied and other macroand micronutrients. Cuttings of `Freedom Red' (Euphorbia pulcherrima Willd. ex Klotzsch) were grown vegetatively in a peat:perlite:vermiculite mix during the fall and spring. Three levels of sulfur (0, 12.5, 25 ppm) were applied in combination with four levels of nitrogen (50, 100, 200, 275 ppm). The experimental design was a randomized complete block. Leaf samples were analyzed using LECO for nitrogen and ICP-ES for sulfur. X-ray fluorescence was used to determine trends in the nutrient concentration of other macronutrients and micronutrients. Nutrient analyses indicated that all nutrients were present in sufficient quantities. Leaf concentrations of nitrogen, sulfur, potassium, and copper were distinctly higher in spring and fall, while phosphorus, calcium, magnesium, and iron concentrations were higher in fall. The typically subtle effects of sulfur were most obvious in magnesium and calcium leaf concentrations. Phosphorus and calcium concentrations increased at lower levels of applied nitrogen. Concentrations of boron, copper, and manganese also increased strikingly at lower levels of applied nitrogen. Apparently when levels of nitrogen less than 200 ppm are applied, micronutrient uptake increases, suggesting the potential of either luxury consumption or possible toxic effects if too little nitrogen is supplied.


Author(s):  
Pedro M. Hryciuk ◽  
Jose A. Minellono ◽  
Verónica Domínguez

A leak on a girth weld was detected on a 609.6 mm (24 in) diameter transmission gas pipeline while recoating works were being performed. Failure analysis determined that the leak was caused by a pre-existing defect in the girth weld. This pre-existing defect had not been evolving over time. Nonetheless, because of the stress particular condition to which the gas pipeline was subject during the recoating work, the defect destabilized and progressed to failure. In order to reduce the risk of occurrence of similar failures, a total of 27,000 girth welds were individually analyzed, corresponding to a length of 191 kilometers (118 miles) of the same gas pipeline section. The analysis included evaluation of internal inspection runs and girth welds gammagraphs available from the recoating work. Hence, not only was the data analyzed individually, but a comparison of the different sources of information to find a correlation was also performed. Features detected in the analysis were classified and prioritized base on comparison with the failed girth weld defect. Also correspondence with crack like indications was considered. Severity of anomalies was categorized on four levels. A set of the highest severe crack like anomalies with potential failure were selected for direct assessment. The complete process involved the assessment of 399 anomalies in total, revealing cracks on 79 girth welds. Metal reinforcements were installed as permanent repair on 27 girth welds according to repair criteria, and direct assessment findings were used to correlate internal inspection signals with features. This paper discusses the results of the analysis, the field findings, and the actions taken.


2018 ◽  
Author(s):  
Jayalakshmi Mitnala

A field experiment was conducted for two consecutive years (2011-2012 and 2012-2013) as doctoral research on fine texture soils of Agricultural College Farm, Bapatla to find out the effect of different sources of nutrients on NPK uptake by rice at various growth periods. The experiment was laid out in a randomized block design in kharif season with four treatments and replicated five times. The treatments consisted of M1 (RDF - Control), M2 (10t FYM ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). The NPK uptake by rice at various growth periods was significantly increased with the application of 100% NPK in combination with FYM @ 10t ha-1. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.


1995 ◽  
Vol 1995 ◽  
pp. 175-175
Author(s):  
A.C. Longland ◽  
A.G. Low ◽  
S.P Bray ◽  
D. Quelch

There have been a number of trials with growing pigs where the digestibility of NSP for a few feeds of varying NSP content have been measured (Graham et al 1986, Longland and Low, 1988). However, there have been few systematic studies where the digestibility of many different types of NSP have been compared at different inclusion levels so that the animals response to each type of NSP can be evaluated, and the effects of NSP source and level on energy and nitrogen (N) digestibility can be assessed. Therefore in the current study the digestibility of NSP, energy and N of semi-purified diets each containing one of eight botanically diverse sources of NSP at a range of inclusion levels was measured.


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