CaSA NaRA
Not a member yet
2090 research outputs found
Sort by
Productivity and Quality of Durum Wheat (Triticum Durum Desf.) at Increasing Rates Of Nitrogen Fertilization Under Long-Term Accumulation Of Nutrients In Pelic Vertisols
Get PDFIn a stationary fertilizing field trial, initiated in 1966 at the Institute of Feld Crops – Chirpan, Bulgaria, the influence of different rates of a nitrogen fertilizer on the productivity and quality of durum wheat (Triticum durum Desf.) have been investigated. As a result of long-term mineral fertilization data for grain yield have been reported. The physical grain properties and some technological qualities have been determined. In the first year of the study grain yield was generally lower compared to 2015, which was better provided with precipitation. The reaction of durum wheat to the increased rates of the nitrogen fertilizer however is different during the two years. Differences in qualitative traits both depending on weather conditions and on changes in the level of nitrogen fertilization have been recorded
Prinos i komponente prinosa zrna ozimog dvoredog ječma gajenog na kiselom zemljištu
Get PDFA field trial was set up to analyse the effect of mineral fertilisation and liming on grain yield and yield components of barley on an acidic soil. Research was conducted over a period of two years at the experimental field of the Secondary School of Agriculture, Kraljevo. The trial involved three cultivars of two-row winter barley and four fertilisation treatments (no fertilisation, different ratios of N:P:K, with or without liming). Mineral fertilisation and liming led to a significant increase in the number of grains per spike and grain weight per spike, thereby resulting in significantly higher grain yields under fertilised treatments. Grain yield increased more significantly by liming than by increased rates of P, which was likely due to greater availability of macro- and micronutrients at increased soil pH. If economically worthwhile, liming should be used in barley production on very acidic soils to increase pH above suboptimal levels (pH 5.0). This would facilitate and enhance the realisation of grain yield potential in barley.Poljski ogled postavljen je sa ciljem da se analizira uticaj mineralnih đubriva i kalcizacije na prinos i komponente prinosa zrna ječma na kiselom zemljištu. Istraživanja su obavljena u dvogodišnjem periodu na oglednom polju Srednje poljoprivredne škole u Kraljevu. Za ogled su odabrane tri sorte ozimog dvoredog ječma i četiri varijante đubrenja (bez đubrenja, različiti odnosi N:P:K, sa ili bez kalcizacije). Primena mineralnih đubriva i kalcizacija uticali su na značajno povećanje broja i mase zrna po klasu, tako da je i prinos zrna svih sorti bio značajno veći na đubrenim varijantama. Na povećanje prinosa zrna ječma u većoj meri je uticala primena kalcizacije zemljišta u odnosu na povećane količine P, što se može povezati sa većom dostupnošću xmakro i mikroelemenata pri povećanju pH vrednosti zemljišta. Ukoliko je ekonomski prihvatljiva kalcizaciju bi trebalo primenjivati u gajenju ječma na jako kiselim zemljištima kako bi se pH vrednost povećala iznad nivoa suboptimalne (pH 5,0). Na taj način bi se u većoj meri realizovao njegov potencijal za prinos zrna
Otpornost sušenih plodova šljive, kajsije i višnje na infestaciju Plodia interpunctella (Lepidoptera: Pyralidae)
Get PDFThe aim of this study was to assess the degree of resistance of dried plums, apricots and cherries to infestation caused by Indian meal moth (Plodia interpunctella), the major pest of dried fruits in the world. Based on the results of Index of susceptibility for insect development and the Susceptibility rating, we found that all three tested dried fruits were resistant to infestation by P. interpunctella, while dried plums were the least resistant. The most resistant were dried apricots, on which no P. interpunctella individual reached the pupal stage.Cilj ovog rada je da proceni otpornost sušenih plodova šljive, kajsije i višnje na infestaciju Plodia interpunctella, ekonomski najznačajnijom štetočinom sušenog voća u svetu. Izračunavanjem indeksa za ocenu pogodnosti supstrata za razviće insekta i stepena otpornosti hraniva na infestaciju utvrđivan je nivo otpornosti korišćenih plodova. Zaključeno je da su sve tri vrste sušenog voća otporne na infestaciju P. interpunctella, ali je sušena šljiva najmanje otporna. Najotpornije su sušene kajsije, na kojima nijedna jedinka P. interpunctella nije dostigla stadijum lutke
Influence of Some Stimulators on the Grain Yield and Grain Quality of Two Durum Wheat Cultivars
Get PDFThe research was conducted during 2010 - 2012 on pellic vertisol soil type. Factor A – cultivars, include 2 Bulgarian durum wheat cultivars: Deyana and Zvezdica (Triticum durum var. valenciae). Factor B – stimulators, include 9 variants: untreated check and 5 growth stimulators – H-40 in doses of 300 and 500 ml ha-1, XH-100 in doses of 1 and 1.2 l ha-1, TH-140 in doses of 2.5 and 2.8 l ha-1, X-80 in dose of 800 ml ha-1 and T – 100 in dose of 2.5 l ha-1. All stimulators were treated during the tillering stage of durum wheat.
It was found that the highest grain yield at durum wheat cultivars Deyana and Zvezdica is obtained by influence of growth stimulators XH-100 and TH-140. Increase the dose of stimulator H-40 depresses durum wheat. The lowest yields are obtained by use of stimulators X-80 and T-100 at the both durum wheat cultivars. The grain yield increase by investigated stimulators is due to the increase in the grain number per spike and the grain weight spike in main tiller and second tiller. The 1000 grain weight, test weight, virteousness, protein quantity, wet and dry gluten quantities are increased by influence of the investigated growth regulators. Physical and biochemical properties oh the grain are the highest by treatment with stimulators ХН-100 and ТН-140. The use of these two plant growth regulators is suggested as an element of the technology for growing of durum wheat
Optimizacija ekstrakcije makroelemenata iz matičnjaka metodom odzivne površine
Get PDFThe effects of liquid-solid ratio (15-30 ml g-1, solvent volume per g of dry material), temperature (40-100oC) and time extraction (20-80 min) such as their interaction on extractability of macroelements of lemon balm were studied. The optimal conditions for the macroelements extraction were determined by response surface methodology. The 23 design showed that polynomial regression models were in good agreement with the experimental results with the linear correlation coefficients of 0.9997, 0.9992, 0.9985 and 0.9989 for K, Ca, Mg and P, respectively.Proučavani su efekati solvomodula (15-30 ml g-1, zapremina rastvarača po g suvog materijala), temperature (40-100oC) i vremena ekstrakcije (20-80 min) kao i njihovih interakcija na ekstrakciju makroelemenata iz matičnjaka. Optimalni uslovi za ekstrakciju makroelemenata određeni su metodom odzivne površine. Trofaktorijalni dizajn na dva nivoa (23) pokazao je dobro slaganje polinomnog regresionog modela sa eksperimentalnim rezultatima, pri čemu su linerni korelacioni koeficijenti iznosili 0,9997, 0,9992, 0,9985 i 0,9989 za K, Ca, Mg i P, respektivno
Mikrobiološki i fizičko-hemijski parametri kao pokazatelji ekološkog statusa i kvaliteta površinske vode Lađevačke reke
Get PDFAssessing the quality and ecological status of water Lađevačka River was carried out on the basis of microbiological and physico-chemical parameters. Analyzed samples was collected in April and June 2016. Microbiological and physical-chemical water analysis was conducted according to generally accepted methods, according to Regulations. During such a short period of time there has been a deterioration in the microbiological and physicochemical parameters of the water quality of the river, which is the river of class III with moderate ecological status in the river crossed IV class with poor ecological status.Procena kvaliteta i ekološkog statusa vode Lađevačke reke vršena je na osnovu mikrobioloških i fizičko-hemijskih parametara analiziranih uzoraka, prikupljenih u aprilu i junu 2016. godine. Mikrobiološka i fizičko-hemijska analiza vode vršena je prema opšteprihvaćenim metodama, koje su date pravilnicima. Tokom ovako kratkog vremenskog perioda došlo je do pogoršanja mikrobioloških i fizičkohemijskih parametara kvaliteta vode ove reke koja je od reke III klase sa umerenim ekološkim statusom prešla u reku IV klase sa slabim ekološkim statusom
Accumulation and Use of Nitrogen in Durum Wheat Cultivar Predel as Influence by Fertilization
Get PDFA field study was conducted during 2012-2014 to assess the effect of nitrogen fertilization on the N concentration and uptake of durum wheat cultivar Predel. N in rates 0; 80; 120 and 160 kg ha-1 was applied. The results showed that N fertilization increased grain yield with 33.7-60.9 %. The average total dry biomass in maturity was 9.7 t ha-1. At N160P80 the dry biomass was 12.44 t ha-1. The N concentration increased with went up of N rates. At the three rates the N concentration of grain increased with 8; 27 and 45 % to the unfertilized. NP fertilization improved the N concentration. N uptake with grain was in range 52.7 - 116.8 kg ha-1, and upake with straw - 22 to 59 kg ha-1
Socio-ekonomska održivost balera za baliranje slame pirinča: studija slučaja
No full textThe present study was conducted in south western district Mansa of Punjab during the year 2014-15. The main objective of the study was to study the socio-economic viability of the paddy straw baler technology. Farmers’ opinion regarding baler technology was studied using interview schedules and economics was studied from case study of successful entrepreneur practicing baler technology for income generation. It was found that farmers were ready to adopt this technology due their concerns regarding removal of loose straw to prepare field for sowing of next season crop and their sensitivity towards environmental pollution from open field burning. The economic analysis revealed that total fixed cost for baler technology is Rs. 15.04 lac and total variable cost was Rs.4.17 lac. Total straw collection during 45 days period was 973 tons. The benefit cost ratio of this technology was 1.77 which indicated its economic viability.Predstavljena studija je provedena u jugozapadnoj oblasti Mansa u Punjabu tokom 2014-15 godine. Glavni cilj studije bilo je proučavanje socioekonomske održivosti tehnologije baliranja slame pirinča. Istraživana su mišljenja farmera o tehnologiji baliranja kroz upitnike, a ekonomičnost je ocenjivana iz studije slučaja uspešnog preduzimača koji uslužno primenjuje tehnologiju baliranja. Zaključeno je da su farmeri bili spremni da primene ovu tehnologiju umesto uklanjanja slame u rasutom stanju radi pripreme parcela za setvu sledećeg sezonskog useva i spaljivanja slame na parceli. Ekonomska analiza je otkrila da su ukupni fiksni troškovi baliranja Rs. 15.04 lac i ukupni varijabilni troškovi Rs.4.17 lac. Ukupna količina pokupljene slame tokom 45 dana iznosila je 973 tone. Analiza odnosa troškova ove tehnologije pokazala je vrednost 1.77 što pokazuje ekonomsku održivost
Upoznavanje sa različitim postupcima remedijacije zemljišta
Get PDFOsnovni cilj kursa je edukacija nastavnika u oblasti primene različitih metoda remedijacije. Kurs će obuhvatiti pregled osnovnih metoda za remedijaciju sedimenta sa fokusom na imobilizaciju teških metala u sedimentu, naročito primenom različitih vrsta liganada u cilju forimiranja kompleksnih jedinjenja
Upotreba tretirane otpadne vode iz prehrambene industrije u proizvodnji paradajza kroz automatizovano navodnjavanje
No full textThe Water is the necessary source for all forms of life. The existing trial was accompanied in Jain Irrigation System Ltd. Jalgaon (India), to check the feasibility of treated waste water from food processing industry in agriculture. The experiment was laid out in split plot design for tomato crop (Lycopersican esculentum) with two treatments viz., treated fruit waste water (M1), treated and bore well fresh water (M2). Two emitter were selected viz., Model B2.0 (Non pressure compensating – S2) and Model C2.0 (Pressure compensating and compensating non leakage – S1). The different observations on each treatment were taken such as uniformity coefficient, plant height, yield, protein content and lycopene, fiber, carbohydrates content. The results showed that the highest uniformity coefficient (97.9 %) M1 (01 DAS), plant height (69.82 cm) M1, yield (35.42 t•ha-1), protein (0.92 %) M1 and lycopen (4.28%) M2. In conclusion, treated fruit waste water can be used as an unconventional source of irrigation after fresh water source, as it has positive effect on crop growth, yield and quality parameters, also less maintenance while operating automated drip system as compared with treated fruit waste water.Voda je neophodna za sve forme života. Ovo istraživanje je izvedno radi provere održivosti primene tretirane otpadne vode iz prehrambene industrije u poljoprivredi. Ogled je postavljen na parcelama paradajza (Lycopersican esculentum) sa dva tretmana, tretirana otpadna voda od voća (M1) i sveža voda iz bušenog bunara (M2). Dva modela su izabrana, Model B2.0 (Bez kompenzacije pritiska – S2) i Model C2.0 (Pritisak kompenzacije – S1). Ispitivani su koeficijent ujednačenosti, visina biljaka, prinos, sadržaj proteina, likopena, vlakana i ugljenih hidrata. Rezultati su pokazali da je najviši koeficijent ujednačenosti (97.9 %) M1 (01 DAS), visina biljaka (69.82 cm) M1, prinos (35.42 t•ha-1), protein (0.92 %) M1 i likopen (4.28%) M2. Zaključeno je da tretirana otpadna voda može biti upotrebljena kao izvor za navodnjavanje posle sveže vode